test(box): cover inbound/outbound attachment helpers; fix ruff format

- ruff format localagent.py (CI ruff format --check was failing)
- add unit tests for ResponseWrapper outbound-attachment helpers (wrapper.py 78%->98%)
- add unit tests for LocalAgentRunner._inject_inbound_attachments
- add unit tests for WebSocketAdapter._process_image_components (0%->covered)

Lifts PR patch coverage from 68.97% to ~88% (>75% target).

.github/workflows/frontend-tests.yml

@@ -0,0 +1,46 @@
+name: Frontend Tests
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened, ready_for_review]
+    paths:
+      - 'web/**'
+      - '.github/workflows/frontend-tests.yml'
+  push:
+    branches:
+      - master
+      - develop
+    paths:
+      - 'web/**'
+      - '.github/workflows/frontend-tests.yml'
+
+jobs:
+  playwright-smoke:
+    name: Playwright Smoke
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '25'
+
+      - name: Install pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 8.9.2
+
+      - name: Install dependencies
+        working-directory: web
+        run: pnpm install --frozen-lockfile
+
+      - name: Install Playwright browsers
+        working-directory: web
+        run: pnpm exec playwright install --with-deps chromium
+
+      - name: Run Playwright smoke tests
+        working-directory: web
+        run: pnpm test:e2e

.github/workflows/lint.yml

@@ -29,7 +29,7 @@ jobs:
         run: uv sync --dev
 
       - name: Run ruff check
-        run: uv run ruff check src
+        run: uv run ruff check src/langbot/ tests/ --output-format=concise
 
       - name: Run ruff format
         run: uv run ruff format src --check

.github/workflows/run-tests.yml

@@ -84,6 +84,67 @@ jobs:
           echo "" >> $GITHUB_STEP_SUMMARY
           echo "Test Status: ${{ job.status }}" >> $GITHUB_STEP_SUMMARY
 
+  e2e:
+    name: E2E Startup Tests
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.12'
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v4
+
+      - name: Install dependencies
+        run: uv sync --dev
+
+      - name: Run E2E startup tests
+        run: uv run pytest tests/e2e -q --tb=short
+
+      - name: E2E Test Summary
+        if: always()
+        run: |
+          echo "## E2E Startup Test Results" >> $GITHUB_STEP_SUMMARY
+          echo "" >> $GITHUB_STEP_SUMMARY
+          echo "Test Status: ${{ job.status }}" >> $GITHUB_STEP_SUMMARY
+
+  box-integration:
+    name: Box Integration Tests
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.12'
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v4
+
+      - name: Install dependencies
+        run: uv sync --dev
+
+      - name: Check Docker runtime
+        run: docker info
+
+      - name: Run Box integration tests
+        run: uv run pytest tests/integration_tests -q --tb=short
+
+      - name: Box Integration Test Summary
+        if: always()
+        run: |
+          echo "## Box Integration Test Results" >> $GITHUB_STEP_SUMMARY
+          echo "" >> $GITHUB_STEP_SUMMARY
+          echo "Test Status: ${{ job.status }}" >> $GITHUB_STEP_SUMMARY
+
   coverage:
     name: Coverage Gate
     runs-on: ubuntu-latest
@@ -129,4 +190,4 @@ jobs:
           echo "## Coverage Results" >> $GITHUB_STEP_SUMMARY
           echo "" >> $GITHUB_STEP_SUMMARY
           echo "Threshold: 18%" >> $GITHUB_STEP_SUMMARY
-          echo "Status: ${{ job.status }}" >> $GITHUB_STEP_SUMMARY
+          echo "Status: ${{ job.status }}" >> $GITHUB_STEP_SUMMARY

src/langbot/pkg/box/service.py

@@ -335,6 +335,428 @@ class BoxService:
 
         return await self.execute_spec_payload(spec_payload, query)
 
+    # ── Attachment passthrough (inbound / outbound) ──────────────────
+    #
+    # IM/webchat attachments (images, voices, files) reach the LLM as
+    # multimodal content, but historically never landed on the sandbox
+    # filesystem, so the agent's exec/read/write tools could not operate on
+    # them. Conversely, files the agent produced inside the sandbox were
+    # never surfaced back to the user. These two helpers close both gaps:
+    #
+    #   inbound  : message_chain attachments -> /workspace/inbox/<query_id>/
+    #   outbound : /workspace/outbox/<query_id>/ -> reply MessageChain
+    #
+    # Transfer prefers DIRECT HOST FILESYSTEM access to the bind-mounted
+    # workspace (default_workspace on the host maps to /workspace inside the
+    # container), which has no size limit. This covers the local docker /
+    # nsjail / stdio backends. For backends where the workspace is NOT visible
+    # on the LangBot host (E2B, an external remote runtime.endpoint), it falls
+    # back to a base64-through-exec round-trip. The exec channel can only move
+    # small files reliably — the docker backend passes the command as a single
+    # argv (ARG_MAX) and exec stdout is truncated by output_limit_chars — so
+    # the host path is strongly preferred and used whenever available.
+
+    INBOX_MOUNT_DIR = '/workspace/inbox'
+    OUTBOX_MOUNT_DIR = '/workspace/outbox'
+    INBOX_SUBDIR = 'inbox'
+    OUTBOX_SUBDIR = 'outbox'
+    # Hard cap on a single attachment. The HTTP upload endpoints already cap
+    # uploads at 10MiB; keep parity.
+    _ATTACHMENT_MAX_BYTES = 10 * _MIB
+    # Conservative cap for the exec FALLBACK path only (ARG_MAX / stdout
+    # truncation). The host-filesystem path has no such limit.
+    _EXEC_FALLBACK_MAX_BYTES = 256 * 1024
+
+    def _host_query_dir(self, subdir: str, query_id) -> str | None:
+        """Host path for ``/workspace/<subdir>/<query_id>`` when LangBot can
+        access the bind-mounted workspace directly, else ``None``.
+
+        ``default_workspace`` is the host directory bind-mounted to
+        ``/workspace`` for the local docker/nsjail backends and shared
+        outright in stdio mode, so a file written there by LangBot is visible
+        to the sandbox (and vice-versa). It is ``None`` / not a local dir for
+        E2B and remote runtimes, where we must fall back to the exec channel.
+        """
+        root = self.default_workspace
+        if not root or not os.path.isdir(root):
+            return None
+        return os.path.join(root, subdir, str(query_id))
+
+    @staticmethod
+    def _sanitize_attachment_name(name: str, fallback: str) -> str:
+        """Reduce an arbitrary attachment name to a safe basename.
+
+        Strips directory separators and parent refs so a crafted file name
+        can never escape the inbox/outbox directory.
+        """
+        base = os.path.basename(str(name or '').replace('\\', '/').strip())
+        base = base.lstrip('.') or ''
+        # Drop anything that is not a conservative filename charset.
+        cleaned = ''.join(c for c in base if c.isalnum() or c in ('.', '_', '-', ' ')).strip()
+        cleaned = cleaned.replace(' ', '_')
+        return cleaned or fallback
+
+    @staticmethod
+    async def _component_to_bytes(component) -> tuple[bytes, str] | None:
+        """Best-effort extraction of (bytes, mime) from a platform component.
+
+        Handles base64, http(s) url and local path sources. Returns None when
+        no payload can be resolved.
+        """
+        import base64 as _b64
+
+        b64 = getattr(component, 'base64', None)
+        if b64:
+            data = b64
+            mime = 'application/octet-stream'
+            if isinstance(data, str) and data.startswith('data:'):
+                split_index = data.find(';base64,')
+                if split_index != -1:
+                    mime = data[5:split_index]
+                    data = data[split_index + 8 :]
+            try:
+                return _b64.b64decode(data), mime
+            except Exception:
+                return None
+
+        url = getattr(component, 'url', None)
+        if url:
+            try:
+                import httpx
+
+                async with httpx.AsyncClient(timeout=30) as client:
+                    resp = await client.get(url)
+                    resp.raise_for_status()
+                    return resp.content, resp.headers.get('Content-Type', 'application/octet-stream')
+            except Exception:
+                return None
+
+        path = getattr(component, 'path', None)
+        if path:
+            try:
+                import aiofiles
+
+                async with aiofiles.open(path, 'rb') as f:
+                    return await f.read(), 'application/octet-stream'
+            except Exception:
+                return None
+
+        return None
+
+    async def _write_files_into_sandbox(
+        self,
+        query: pipeline_query.Query,
+        subdir: str,
+        target_mount_dir: str,
+        files: list[tuple[str, bytes]],
+    ) -> list[str]:
+        """Write *files* (name, bytes) into the per-query directory.
+
+        Prefers a direct host-filesystem write to the bind-mounted workspace
+        (no size limit). Falls back to a base64-through-exec round-trip only
+        when the workspace is not visible on the LangBot host (E2B / remote).
+        Returns the list of in-sandbox paths actually written.
+        """
+        if not files:
+            return []
+
+        host_dir = self._host_query_dir(subdir, query.query_id)
+        if host_dir is not None:
+            return await asyncio.to_thread(self._write_files_host, host_dir, target_mount_dir, files)
+
+        return await self._write_files_via_exec(query, target_mount_dir, files)
+
+    def _write_files_host(
+        self,
+        host_dir: str,
+        target_mount_dir: str,
+        files: list[tuple[str, bytes]],
+    ) -> list[str]:
+        """Write attachments straight onto the bind-mounted host directory.
+
+        Recreates the per-query directory from scratch so a reused query_id
+        (the webchat session uses small sequential ids) never inherits stale
+        files from an earlier turn.
+        """
+        import shutil
+
+        shutil.rmtree(host_dir, ignore_errors=True)
+        os.makedirs(host_dir, exist_ok=True)
+        written: list[str] = []
+        for name, data in files:
+            with open(os.path.join(host_dir, name), 'wb') as fh:
+                fh.write(data)
+            written.append(f'{target_mount_dir}/{name}')
+        return written
+
+    async def _write_files_via_exec(
+        self,
+        query: pipeline_query.Query,
+        target_dir: str,
+        files: list[tuple[str, bytes]],
+    ) -> list[str]:
+        """Fallback: ship files into the sandbox over the exec channel.
+
+        Only used for backends without host-filesystem access (E2B / remote).
+        Each file is base64-decoded inside the sandbox. Files larger than the
+        conservative exec cap are skipped (ARG_MAX / stdout limits).
+        """
+        import base64 as _b64
+        import json as _json
+
+        manifest = []
+        for name, data in files:
+            if len(data) > self._EXEC_FALLBACK_MAX_BYTES:
+                self.ap.logger.warning(
+                    f'Attachment "{name}" ({len(data)} bytes) exceeds the exec-channel '
+                    f'fallback limit ({self._EXEC_FALLBACK_MAX_BYTES} bytes); skipping. '
+                    f'Configure a host-shared workspace to transfer large files.'
+                )
+                continue
+            manifest.append({'name': name, 'b64': _b64.b64encode(data).decode('ascii')})
+        if not manifest:
+            return []
+
+        manifest_b64 = _b64.b64encode(_json.dumps(manifest).encode('utf-8')).decode('ascii')
+        script = (
+            'import base64, json, os, shutil\n'
+            f'target = {target_dir!r}\n'
+            'shutil.rmtree(target, ignore_errors=True)\n'
+            'os.makedirs(target, exist_ok=True)\n'
+            f'manifest = json.loads(base64.b64decode({manifest_b64!r}))\n'
+            'written = []\n'
+            'for item in manifest:\n'
+            "    p = os.path.join(target, item['name'])\n"
+            "    with open(p, 'wb') as f:\n"
+            "        f.write(base64.b64decode(item['b64']))\n"
+            '    written.append(p)\n'
+            'print(json.dumps(written))\n'
+        )
+        result = await self.execute_tool(
+            {'command': f"python3 - <<'LBPY'\n{script}\nLBPY", 'timeout_sec': 120},
+            query,
+        )
+        if not result.get('ok'):
+            self.ap.logger.warning(
+                f'Failed to write inbound attachments into sandbox via exec: '
+                f'query_id={query.query_id} stderr={result.get("stderr", "")[:200]}'
+            )
+            return []
+        try:
+            return _json.loads(str(result.get('stdout') or '').strip().splitlines()[-1])
+        except Exception:
+            return []
+
+    async def materialize_inbound_attachments(self, query: pipeline_query.Query) -> list[dict]:
+        """Persist message-chain attachments into the sandbox inbox.
+
+        Returns a list of ``{path, name, type, size}`` describing what was
+        written, so the runner can tell the LLM the exact in-sandbox paths.
+        Returns ``[]`` when sandbox is unavailable or there are no attachments.
+        """
+        if not self._available:
+            return []
+
+        import langbot_plugin.api.entities.builtin.platform.message as platform_message
+
+        message_chain = getattr(query, 'message_chain', None)
+        if not message_chain:
+            return []
+
+        type_map = [
+            (platform_message.Image, 'Image', 'image', 'png'),
+            (platform_message.Voice, 'Voice', 'voice', 'wav'),
+            (platform_message.File, 'File', 'file', 'bin'),
+        ]
+
+        pending: list[tuple[str, bytes]] = []
+        descriptors: list[dict] = []
+        index = 0
+        for component in message_chain:
+            matched = None
+            for cls, kind, prefix, default_ext in type_map:
+                if isinstance(component, cls):
+                    matched = (kind, prefix, default_ext)
+                    break
+            if matched is None:
+                continue
+            kind, prefix, default_ext = matched
+
+            payload = await self._component_to_bytes(component)
+            if payload is None:
+                continue
+            data, _mime = payload
+            if not data or len(data) > self._ATTACHMENT_MAX_BYTES:
+                continue
+
+            index += 1
+            raw_name = getattr(component, 'name', None) or f'{prefix}_{index}.{default_ext}'
+            safe_name = self._sanitize_attachment_name(raw_name, f'{prefix}_{index}.{default_ext}')
+            pending.append((safe_name, data))
+            descriptors.append(
+                {
+                    'name': safe_name,
+                    'type': kind,
+                    'size': len(data),
+                }
+            )
+
+        if not pending:
+            return []
+
+        target_dir = f'{self.INBOX_MOUNT_DIR}/{query.query_id}'
+        written = await self._write_files_into_sandbox(query, self.INBOX_SUBDIR, target_dir, pending)
+        written_basenames = {os.path.basename(p) for p in written}
+
+        result: list[dict] = []
+        for desc in descriptors:
+            if desc['name'] in written_basenames:
+                desc['path'] = f'{target_dir}/{desc["name"]}'
+                result.append(desc)
+        if result:
+            self.ap.logger.info(
+                f'Materialized {len(result)} inbound attachment(s) into sandbox: '
+                f'query_id={query.query_id} dir={target_dir}'
+            )
+        return result
+
+    async def collect_outbound_attachments(self, query: pipeline_query.Query) -> list[dict]:
+        """Collect files the agent produced in the sandbox outbox.
+
+        Reads ``/workspace/outbox/<query_id>/`` (recursively) — directly from
+        the bind-mounted host directory when available (no size limit), else
+        via the exec channel — returns a list of ``{type, name, base64}``
+        ready to become platform message components, then clears the outbox so
+        a later turn in the same session does not re-send stale files. Returns
+        ``[]`` when nothing was produced.
+        """
+        if not self._available:
+            return []
+
+        host_dir = self._host_query_dir(self.OUTBOX_SUBDIR, query.query_id)
+        if host_dir is not None:
+            entries = await asyncio.to_thread(self._read_outbox_host, host_dir)
+        else:
+            entries = await self._read_outbox_via_exec(query)
+
+        attachments = self._classify_outbound_entries(entries)
+
+        if attachments:
+            await self._clear_outbox(query, host_dir)
+            self.ap.logger.info(
+                f'Collected {len(attachments)} outbound attachment(s) from sandbox: query_id={query.query_id}'
+            )
+        return attachments
+
+    def _read_outbox_host(self, host_dir: str) -> list[dict]:
+        """Read outbox files straight off the bind-mounted host directory."""
+        import base64 as _b64
+
+        entries: list[dict] = []
+        if not os.path.isdir(host_dir):
+            return entries
+        for root, _dirs, names in os.walk(host_dir):
+            for name in sorted(names):
+                path = os.path.join(root, name)
+                try:
+                    if os.path.getsize(path) > self._ATTACHMENT_MAX_BYTES:
+                        continue
+                    with open(path, 'rb') as fh:
+                        data = fh.read()
+                except OSError:
+                    continue
+                rel = os.path.relpath(path, host_dir)
+                entries.append({'name': rel, 'b64': _b64.b64encode(data).decode('ascii')})
+        return entries
+
+    async def _read_outbox_via_exec(self, query: pipeline_query.Query) -> list[dict]:
+        """Fallback: read the outbox over the exec channel (E2B / remote).
+
+        Note: exec stdout is truncated by ``output_limit_chars``, so this path
+        only reliably transfers small files. The host path is preferred.
+        """
+        import json as _json
+
+        target_dir = f'{self.OUTBOX_MOUNT_DIR}/{query.query_id}'
+        max_bytes = self._EXEC_FALLBACK_MAX_BYTES
+        script = (
+            'import base64, json, os\n'
+            f'target = {target_dir!r}\n'
+            f'max_bytes = {max_bytes}\n'
+            'out = []\n'
+            'if os.path.isdir(target):\n'
+            '    for root, _dirs, names in os.walk(target):\n'
+            '        for n in sorted(names):\n'
+            '            p = os.path.join(root, n)\n'
+            '            try:\n'
+            '                if os.path.getsize(p) > max_bytes:\n'
+            '                    continue\n'
+            "                with open(p, 'rb') as f:\n"
+            '                    data = f.read()\n'
+            '            except OSError:\n'
+            '                continue\n'
+            '            rel = os.path.relpath(p, target)\n'
+            "            out.append({'name': rel, 'b64': base64.b64encode(data).decode('ascii')})\n"
+            'print(json.dumps(out))\n'
+        )
+        result = await self.execute_tool(
+            {'command': f"python3 - <<'LBPY'\n{script}\nLBPY", 'timeout_sec': 120},
+            query,
+        )
+        if not result.get('ok'):
+            return []
+        try:
+            return _json.loads(str(result.get('stdout') or '').strip().splitlines()[-1])
+        except Exception:
+            return []
+
+    async def _clear_outbox(self, query: pipeline_query.Query, host_dir: str | None) -> None:
+        """Empty the per-query outbox after collection (host or exec)."""
+        if host_dir is not None:
+            import shutil
+
+            def _clear():
+                shutil.rmtree(host_dir, ignore_errors=True)
+                os.makedirs(host_dir, exist_ok=True)
+
+            await asyncio.to_thread(_clear)
+            return
+        target_dir = f'{self.OUTBOX_MOUNT_DIR}/{query.query_id}'
+        await self.execute_tool(
+            {'command': f'rm -rf {target_dir} && mkdir -p {target_dir}', 'timeout_sec': 30},
+            query,
+        )
+
+    @staticmethod
+    def _classify_outbound_entries(entries: list[dict]) -> list[dict]:
+        """Classify outbox files into Image/Voice/File component descriptors."""
+        image_exts = {'png', 'jpg', 'jpeg', 'gif', 'webp', 'bmp'}
+        voice_exts = {'wav', 'mp3', 'silk', 'amr', 'ogg', 'm4a', 'aac'}
+        mime_by_ext = {
+            'png': 'image/png',
+            'jpg': 'image/jpeg',
+            'jpeg': 'image/jpeg',
+            'gif': 'image/gif',
+            'webp': 'image/webp',
+            'bmp': 'image/bmp',
+        }
+        attachments: list[dict] = []
+        for entry in entries or []:
+            name = str(entry.get('name', '') or '')
+            b64 = entry.get('b64')
+            if not name or not b64:
+                continue
+            ext = name.rsplit('.', 1)[-1].lower() if '.' in name else ''
+            base_name = os.path.basename(name)
+            if ext in image_exts:
+                mime = mime_by_ext.get(ext, 'image/png')
+                attachments.append({'type': 'Image', 'name': base_name, 'base64': f'data:{mime};base64,{b64}'})
+            elif ext in voice_exts:
+                attachments.append({'type': 'Voice', 'name': base_name, 'base64': f'data:audio/{ext};base64,{b64}'})
+            else:
+                attachments.append({'type': 'File', 'name': base_name, 'base64': b64})
+        return attachments
+
     async def shutdown(self):
         await self.client.shutdown()
 

src/langbot/pkg/pipeline/wrapper/wrapper.py

@@ -7,6 +7,7 @@ from .. import stage
 
 import langbot_plugin.api.entities.builtin.platform.message as platform_message
 import langbot_plugin.api.entities.builtin.pipeline.query as pipeline_query
+import langbot_plugin.api.entities.builtin.provider.message as provider_message
 import langbot_plugin.api.entities.events as events
 
 
@@ -23,6 +24,50 @@ class ResponseWrapper(stage.PipelineStage):
     async def initialize(self, pipeline_config: dict):
         pass
 
+    def _is_final_assistant_message(self, result) -> bool:
+        """Whether *result* is the agent's final, tool-call-free answer.
+
+        Intermediate streaming chunks and tool-call rounds must NOT trigger
+        outbound attachment collection — only the terminal assistant message.
+        """
+        if getattr(result, 'role', None) != 'assistant':
+            return False
+        if result.tool_calls:
+            return False
+        if isinstance(result, provider_message.MessageChunk):
+            return bool(result.is_final)
+        return True
+
+    async def _append_outbound_attachments(
+        self,
+        query: pipeline_query.Query,
+        message_chain: platform_message.MessageChain,
+    ) -> None:
+        """Collect sandbox outbox files and append them to *message_chain*.
+
+        Runs at most once per query (guarded by a query variable) and never
+        raises into the pipeline — attachment delivery is best-effort.
+        """
+        if query.variables.get('_sandbox_outbound_collected'):
+            return
+        box_service = getattr(self.ap, 'box_service', None)
+        if box_service is None or not getattr(box_service, 'available', False):
+            return
+        query.variables['_sandbox_outbound_collected'] = True
+        try:
+            attachments = await box_service.collect_outbound_attachments(query)
+        except Exception as e:
+            self.ap.logger.warning(f'Outbound attachment collection failed: {e}')
+            return
+        for att in attachments:
+            att_type = att.get('type')
+            if att_type == 'Image':
+                message_chain.append(platform_message.Image(base64=att['base64']))
+            elif att_type == 'Voice':
+                message_chain.append(platform_message.Voice(base64=att['base64']))
+            else:
+                message_chain.append(platform_message.File(name=att.get('name', 'file'), base64=att['base64']))
+
     async def process(
         self,
         query: pipeline_query.Query,
@@ -83,10 +128,16 @@ class ResponseWrapper(stage.PipelineStage):
                             )
                         else:
                             if event_ctx.event.reply_message_chain is not None:
-                                query.resp_message_chain.append(event_ctx.event.reply_message_chain)
-
+                                reply_chain = event_ctx.event.reply_message_chain
                             else:
-                                query.resp_message_chain.append(result.get_content_platform_message_chain())
+                                reply_chain = result.get_content_platform_message_chain()
+
+                            # Attach files the agent produced in the sandbox
+                            # outbox, but only on the terminal assistant message.
+                            if self._is_final_assistant_message(result):
+                                await self._append_outbound_attachments(query, reply_chain)
+
+                            query.resp_message_chain.append(reply_chain)
 
                             yield entities.StageProcessResult(
                                 result_type=entities.ResultType.CONTINUE,

src/langbot/pkg/platform/sources/websocket_adapter.py

@@ -312,12 +312,18 @@ class WebSocketAdapter(abstract_platform_adapter.AbstractMessagePlatformAdapter)
 
     async def _process_image_components(self, message_chain_obj: list):
         """
-        处理消息链中的图片和文件组件，将path转换为base64
+        处理消息链中的图片、语音和文件组件，将 path 转换为 base64
+
+        Image / Voice / File components uploaded from the web client carry a
+        storage key in ``path``. Resolve it to a base64 data URI so downstream
+        stages (multimodal LLM input and the Box sandbox inbox) have a usable
+        payload, then drop the now-consumed storage object.
 
         Args:
             message_chain_obj: 消息链对象列表
         """
         import base64
+        import mimetypes
 
         storage_mgr = self.ap.storage_mgr
 
@@ -325,31 +331,33 @@ class WebSocketAdapter(abstract_platform_adapter.AbstractMessagePlatformAdapter)
             comp_type = component.get('type', '')
             comp_path = component.get('path', '')
 
-            if not comp_path:
+            if not comp_path or comp_type not in ('Image', 'Voice', 'File'):
                 continue
 
-            if comp_type == 'Image':
-                try:
-                    file_content = await storage_mgr.storage_provider.load(comp_path)
-                    base64_str = base64.b64encode(file_content).decode('utf-8')
+            try:
+                file_content = await storage_mgr.storage_provider.load(comp_path)
+                base64_str = base64.b64encode(file_content).decode('utf-8')
 
-                    file_key = comp_path
-                    if file_key.lower().endswith(('.jpg', '.jpeg')):
+                lowered = comp_path.lower()
+                if comp_type == 'Image':
+                    if lowered.endswith(('.jpg', '.jpeg')):
                         mime_type = 'image/jpeg'
-                    elif file_key.lower().endswith('.png'):
-                        mime_type = 'image/png'
-                    elif file_key.lower().endswith('.gif'):
+                    elif lowered.endswith('.gif'):
                         mime_type = 'image/gif'
-                    elif file_key.lower().endswith('.webp'):
+                    elif lowered.endswith('.webp'):
                         mime_type = 'image/webp'
                     else:
                         mime_type = 'image/png'
+                elif comp_type == 'Voice':
+                    mime_type = mimetypes.guess_type(comp_path)[0] or 'audio/wav'
+                else:  # File
+                    mime_type = mimetypes.guess_type(comp_path)[0] or 'application/octet-stream'
 
-                    component['base64'] = f'data:{mime_type};base64,{base64_str}'
-                    await storage_mgr.storage_provider.delete(comp_path)
-                    component['path'] = ''
-                except Exception as e:
-                    await self.logger.error(f'Failed to load image file {comp_path}: {e}')
+                component['base64'] = f'data:{mime_type};base64,{base64_str}'
+                await storage_mgr.storage_provider.delete(comp_path)
+                component['path'] = ''
+            except Exception as e:
+                await self.logger.error(f'Failed to load {comp_type} file {comp_path}: {e}')
 
     async def handle_websocket_message(
         self,

src/langbot/pkg/provider/modelmgr/requesters/litellmchat.py

@@ -216,11 +216,22 @@ class LiteLLMRequester(requester.ProviderAPIRequester):
             content = msg_dict.get('content')
 
             if isinstance(content, list):
+                converted_parts = []
                 for part in content:
                     if isinstance(part, dict) and part.get('type') == 'image_base64':
                         part['image_url'] = {'url': part['image_base64']}
                         part['type'] = 'image_url'
                         del part['image_base64']
+                    # OpenAI-compatible chat models reject non-image file parts
+                    # (audio/document base64 or url). These originate from Voice /
+                    # File attachments — including ones replayed from conversation
+                    # history — and the agent already accesses their bytes via the
+                    # sandbox. Drop them from the model payload to avoid
+                    # "Invalid user message ... invalid content type=file_base64".
+                    if isinstance(part, dict) and part.get('type') in ('file_base64', 'file_url'):
+                        continue
+                    converted_parts.append(part)
+                msg_dict['content'] = converted_parts
 
             req_messages.append(msg_dict)
 

src/langbot/pkg/provider/runners/localagent.py

@@ -104,6 +104,68 @@ class _StreamAccumulator:
 class LocalAgentRunner(runner.RequestRunner):
     """Local agent request runner"""
 
+    async def _inject_inbound_attachments(
+        self,
+        query: pipeline_query.Query,
+        user_message: provider_message.Message,
+    ) -> None:
+        """Persist inbound attachments into the sandbox and tell the model.
+
+        No-op when the box service is unavailable or there are no attachments.
+        On success, appends an extra text ContentElement to the user message
+        listing the in-sandbox paths and the outbox convention, and stashes the
+        descriptors in ``query.variables['_sandbox_inbound_attachments']``.
+        """
+        box_service = getattr(self.ap, 'box_service', None)
+        if box_service is None or not getattr(box_service, 'available', False):
+            return
+        try:
+            attachments = await box_service.materialize_inbound_attachments(query)
+        except Exception as e:  # never break the chat turn over attachment IO
+            self.ap.logger.warning(f'Inbound attachment materialization failed: {e}')
+            return
+        if not attachments:
+            return
+
+        query.variables['_sandbox_inbound_attachments'] = attachments
+
+        lines = [
+            'The user sent attachments. They have been saved into the sandbox and are '
+            'available to the exec/read/write tools at these paths:'
+        ]
+        for att in attachments:
+            lines.append(f'- {att["type"]}: {att["path"]} ({att["size"]} bytes)')
+        outbox_dir = f'{box_service.OUTBOX_MOUNT_DIR}/{query.query_id}'
+        lines.append(
+            'If you produce any file (image, audio, document, etc.) that should be sent '
+            f'back to the user, write it into {outbox_dir}/ (create the directory if '
+            'needed). Every file placed there will be delivered to the user automatically.'
+        )
+        note = '\n'.join(lines)
+
+        # Voice/File attachments are now available to the agent via the sandbox
+        # (exec/read/write tools). Their raw bytes must NOT be forwarded to the
+        # chat model as multimodal content: providers reject non-image file
+        # parts ("Invalid user message ... ensure all user messages are valid
+        # OpenAI chat completion messages"). Strip those content elements and
+        # rely on the sandbox-path note instead. Images are kept so vision
+        # models can still see them.
+        _model_unsafe_types = {'file_base64', 'file_url'}
+        if isinstance(user_message.content, list):
+            user_message.content = [
+                ce for ce in user_message.content if getattr(ce, 'type', None) not in _model_unsafe_types
+            ]
+
+        if isinstance(user_message.content, str):
+            user_message.content = [
+                provider_message.ContentElement.from_text(user_message.content),
+                provider_message.ContentElement.from_text(note),
+            ]
+        elif isinstance(user_message.content, list):
+            user_message.content.append(provider_message.ContentElement.from_text(note))
+        else:
+            user_message.content = [provider_message.ContentElement.from_text(note)]
+
     def _build_request_messages(
         self,
         query: pipeline_query.Query,
@@ -232,6 +294,12 @@ class LocalAgentRunner(runner.RequestRunner):
 
         user_message = copy.deepcopy(query.user_message)
 
+        # Materialize inbound attachments (images / voices / files) into the
+        # sandbox so the agent's exec/read/write tools can operate on the real
+        # bytes — not just the multimodal copy the model sees. The exact
+        # in-sandbox paths are announced to the model as a system note.
+        await self._inject_inbound_attachments(query, user_message)
+
         user_message_text = ''
 
         if isinstance(user_message.content, str):

tests/README.md

@@ -1,6 +1,7 @@
 # LangBot Test Suite
 
-This directory contains the test suite for LangBot, with a focus on comprehensive unit testing of pipeline stages.
+This directory contains the LangBot backend test suite, including unit tests,
+integration tests, startup E2E tests, and container-backed Box runtime tests.
 
 ## Quality Gate Layers
 
@@ -10,10 +11,15 @@ LangBot uses a layered quality gate system for developers and CI:
 |-------|---------|--------------|-------------|
 | **Quick** | `make test-quick` or `bash scripts/test-quick.sh` | Ruff lint + Unit tests + Smoke tests | Before every commit |
 | **Fast Integration** | `make test-integration-fast` or `bash scripts/test-integration-fast.sh` | SQLite/API/Pipeline integration (no external services) | Before PR, weekly |
+| **Backend E2E** | `uv run --python 3.12 pytest tests/e2e -q --tb=short` | Starts a real LangBot process with minimal config | Before release, CI |
+| **Box Integration** | `uv run --python 3.12 pytest tests/integration_tests -q --tb=short` | Real Box sandbox/runtime integration | Before Box/runtime changes, CI |
+| **Frontend E2E** | `cd web && pnpm test:e2e` | Playwright smoke tests with mocked backend and Space APIs | Before web changes, CI |
 | **Coverage Gate** | `make test-coverage` or `bash scripts/test-coverage.sh` | All tests with coverage, threshold: 18% | Before merge, CI |
 | **Full Local** | `make test-all-local` | Quick + Integration + Coverage | Before major changes |
 
-**Note**: PostgreSQL migration tests and slow tests are NOT in local default gates. They run in separate CI workflows.
+**Note**: PostgreSQL migration tests and slow tests are NOT in local default
+gates. They run in separate CI workflows. Frontend Playwright tests live under
+`web/tests/e2e` and are documented in `web/README.md`.
 
 ### Developer Workflow
 
@@ -28,6 +34,9 @@ make test-all-local
 bash scripts/test-quick.sh           # ~2 min
 bash scripts/test-integration-fast.sh # ~3 min
 bash scripts/test-coverage.sh         # ~8 min
+uv run --python 3.12 pytest tests/e2e -q --tb=short
+uv run --python 3.12 pytest tests/integration_tests -q --tb=short
+cd web && pnpm test:e2e
 ```
 
 ### Coverage Baseline
@@ -70,6 +79,12 @@ tests/
 │   └── persistence/             # Database/persistence tests
 │       ├── __init__.py
 │       └── test_migrations.py   # Alembic migration tests
+├── e2e/                          # Real LangBot startup E2E tests
+│   ├── conftest.py
+│   ├── test_startup.py
+│   └── utils/
+├── integration_tests/            # Container-backed integration tests
+│   └── box/                      # Box runtime and MCP process tests
 ├── smoke/                        # Smoke tests (quick validation)
 │   └── test_fake_message_flow.py
 ├── unit_tests/                   # Unit tests
@@ -303,6 +318,44 @@ These tests:
 - Test prevent_default, exception handling, and full message flow
 - Do not require real LLM provider keys
 
+### Running backend E2E startup tests
+
+Backend E2E tests start a real LangBot process with a generated minimal
+`data/config.yaml`, SQLite database, local storage, and embedded Chroma path.
+They do not require provider keys or external services.
+
+```bash
+uv run --python 3.12 pytest tests/e2e -q --tb=short
+```
+
+These tests verify startup orchestration, migrations, API route registration,
+and the minimal no-LLM startup path. The E2E process manager disables ambient
+proxy variables for subprocess startup and uses direct localhost HTTP clients,
+so local proxy settings should not affect the health checks.
+
+### Running Box integration tests
+
+Box integration tests exercise the real sandbox runtime path, including command
+execution, session persistence, managed process WebSocket attachment, and
+cleanup behavior.
+
+```bash
+uv run --python 3.12 pytest tests/integration_tests -q --tb=short
+```
+
+These tests require a working Docker or Podman runtime. In CI, the dedicated
+Box integration job checks Docker availability before running the tests.
+
+### Running frontend E2E tests
+
+Frontend E2E tests live in `web/tests/e2e` and use Playwright. They start Vite
+and mock the LangBot backend and Space APIs, so no backend process is required.
+
+```bash
+cd web
+pnpm test:e2e
+```
+
 ### Known Issues
 
 Some tests may encounter circular import errors. This is a known issue with the current module structure. The test infrastructure is designed to work around this using lazy imports, but if you encounter issues:
@@ -320,6 +373,9 @@ Tests are automatically run on:
 - Push to master/develop branches
 
 The workflow runs tests on Python 3.11, 3.12, and 3.13 to ensure compatibility.
+Startup E2E and Box integration tests run as separate Python 3.12 jobs because
+they exercise process/container behavior instead of pure Python compatibility.
+Frontend Playwright smoke tests run in `.github/workflows/frontend-tests.yml`.
 
 ## Adding New Tests
 
@@ -406,4 +462,4 @@ Check that you're mocking at the right level and using `AsyncMock` for async fun
 - [ ] Add E2E tests
 - [ ] Add performance benchmarks
 - [ ] Add mutation testing for better coverage quality
-- [ ] Add property-based testing with Hypothesis
+- [ ] Add property-based testing with Hypothesis

tests/e2e/conftest.py

@@ -92,11 +92,11 @@ def e2e_client(e2e_port, langbot_process):
 
     base_url = f'http://127.0.0.1:{e2e_port}'
 
-    with httpx.Client(base_url=base_url, timeout=10.0) as client:
+    with httpx.Client(base_url=base_url, timeout=10.0, trust_env=False) as client:
         yield client
 
 
 @pytest.fixture(scope='session')
 def e2e_db_path(e2e_tmpdir):
     """Path to SQLite database file."""
-    return e2e_tmpdir / 'data' / 'langbot.db'
+    return e2e_tmpdir / 'data' / 'langbot.db'

tests/e2e/test_startup.py

@@ -38,12 +38,13 @@ class TestStartupFlow:
         # System info should contain version info
         assert 'version' in data['data'] or 'edition' in data['data']
 
-    def test_database_initialized(self, e2e_db_path):
+    def test_database_initialized(self, langbot_process, e2e_db_path):
         """Verify SQLite database was created and initialized."""
         assert e2e_db_path.exists()
 
         # Database should have some tables after migration
         import sqlite3
+
         conn = sqlite3.connect(str(e2e_db_path))
         cursor = conn.cursor()
 
@@ -74,10 +75,13 @@ class TestStartupFlow:
     def test_auth_endpoint(self, e2e_client, e2e_tmpdir):
         """Test auth endpoint."""
         # First startup may allow initial setup
-        response = e2e_client.post('/api/v1/user/auth', json={
-            'username': 'admin',
-            'password': 'admin',
-        })
+        response = e2e_client.post(
+            '/api/v1/user/auth',
+            json={
+                'user': 'admin',
+                'password': 'admin',
+            },
+        )
 
         # Response could be:
         # - 200 if auth succeeds
@@ -94,9 +98,10 @@ class TestStartupStages:
         # If API responds on e2e_port, config was loaded
         assert e2e_client.get('/api/v1/system/info').status_code == 200
 
-    def test_migrations_applied(self, e2e_db_path):
+    def test_migrations_applied(self, langbot_process, e2e_db_path):
         """Verify database migrations were applied."""
         import sqlite3
+
         conn = sqlite3.connect(str(e2e_db_path))
         cursor = conn.cursor()
 

tests/e2e/utils/config_factory.py

@@ -176,4 +176,4 @@ def create_test_directories(tmpdir: Path) -> dict[str, Path]:
     for path in directories.values():
         path.mkdir(parents=True, exist_ok=True)
 
-    return directories
+    return directories

tests/e2e/utils/process_manager.py

@@ -44,6 +44,17 @@ class LangBotProcess:
         # Prepare environment
         env = os.environ.copy()
         env['PYTHONPATH'] = str(self.project_root / 'src')
+        for proxy_key in (
+            'HTTP_PROXY',
+            'HTTPS_PROXY',
+            'ALL_PROXY',
+            'http_proxy',
+            'https_proxy',
+            'all_proxy',
+        ):
+            env.pop(proxy_key, None)
+        env['NO_PROXY'] = '127.0.0.1,localhost'
+        env['no_proxy'] = '127.0.0.1,localhost'
 
         # Set API port via environment variable
         env['API__PORT'] = str(self.port)
@@ -79,9 +90,11 @@ precision = 2
                 f.write(coveragerc_content)
 
             cmd = [
-                'coverage', 'run',
+                'coverage',
+                'run',
                 '--rcfile=' + str(coveragerc_path),
-                '-m', 'langbot',
+                '-m',
+                'langbot',
             ]
         else:
             cmd = ['uv', 'run', 'python', '-m', 'langbot']
@@ -113,6 +126,8 @@ precision = 2
                 r = httpx.get(
                     f'http://127.0.0.1:{self.port}/api/v1/system/info',
                     timeout=2.0,
+                    follow_redirects=False,
+                    trust_env=False,
                 )
                 if r.status_code == 200:
                     logger.info(f'LangBot started successfully on port {self.port}')
@@ -185,6 +200,8 @@ precision = 2
             r = httpx.get(
                 f'http://127.0.0.1:{self.port}/api/v1/system/info',
                 timeout=5.0,
+                follow_redirects=False,
+                trust_env=False,
             )
             return r.status_code == 200
         except Exception:
@@ -201,4 +218,4 @@ def find_project_root() -> Path:
             return parent
 
     # Fallback to LangBot-test-build directory
-    return Path('/home/glwuy/langbot-app/LangBot-test-build')
+    return Path('/home/glwuy/langbot-app/LangBot-test-build')

tests/factories/__init__.py

@@ -58,45 +58,45 @@ from tests.factories.platform import (
 
 __all__ = [
     # App
-    "FakeApp",
-    "fake_app",
+    'FakeApp',
+    'fake_app',
     # Message chains
-    "text_chain",
-    "group_text_chain",
-    "mention_chain",
-    "image_chain",
+    'text_chain',
+    'group_text_chain',
+    'mention_chain',
+    'image_chain',
     # Message events
-    "friend_message_event",
-    "group_message_event",
+    'friend_message_event',
+    'group_message_event',
     # Mock adapters
-    "mock_adapter",
+    'mock_adapter',
     # Queries
-    "text_query",
-    "group_text_query",
-    "private_text_query",
-    "command_query",
-    "mention_query",
-    "empty_query",
-    "image_query",
-    "file_query",
-    "unsupported_query",
-    "voice_query",
-    "at_all_query",
-    "query_with_session",
-    "query_with_config",
+    'text_query',
+    'group_text_query',
+    'private_text_query',
+    'command_query',
+    'mention_query',
+    'empty_query',
+    'image_query',
+    'file_query',
+    'unsupported_query',
+    'voice_query',
+    'at_all_query',
+    'query_with_session',
+    'query_with_config',
     # Provider
-    "FakeProvider",
-    "fake_provider",
-    "fake_provider_pong",
-    "fake_provider_timeout",
-    "fake_provider_auth_error",
-    "fake_provider_rate_limit",
-    "fake_provider_malformed",
-    "fake_model",
+    'FakeProvider',
+    'fake_provider',
+    'fake_provider_pong',
+    'fake_provider_timeout',
+    'fake_provider_auth_error',
+    'fake_provider_rate_limit',
+    'fake_provider_malformed',
+    'fake_model',
     # Platform
-    "FakePlatform",
-    "fake_platform",
-    "fake_platform_with_streaming",
-    "fake_platform_with_failure",
-    "mock_platform_adapter",
-]
+    'FakePlatform',
+    'fake_platform',
+    'fake_platform_with_streaming',
+    'fake_platform_with_failure',
+    'mock_platform_adapter',
+]

tests/factories/message.py

@@ -30,32 +30,36 @@ def _next_query_id() -> int:
 # ============== Message Chain Factories ==============
 
 
-def text_chain(text: str = "hello") -> platform_message.MessageChain:
+def text_chain(text: str = 'hello') -> platform_message.MessageChain:
     """Create a simple text message chain."""
-    return platform_message.MessageChain([
-        platform_message.Plain(text=text),
-    ])
+    return platform_message.MessageChain(
+        [
+            platform_message.Plain(text=text),
+        ]
+    )
 
 
-def group_text_chain(text: str = "hello") -> platform_message.MessageChain:
+def group_text_chain(text: str = 'hello') -> platform_message.MessageChain:
     """Create a group text message chain (same as text_chain, context provided by event)."""
     return text_chain(text)
 
 
 def mention_chain(
-    text: str = "hello",
+    text: str = 'hello',
     target: typing.Union[int, str] = 12345,
 ) -> platform_message.MessageChain:
     """Create a message chain with @mention."""
-    return platform_message.MessageChain([
-        platform_message.At(target=target),
-        platform_message.Plain(text=f" {text}"),
-    ])
+    return platform_message.MessageChain(
+        [
+            platform_message.At(target=target),
+            platform_message.Plain(text=f' {text}'),
+        ]
+    )
 
 
 def image_chain(
-    text: str = "",
-    url: str = "https://example.com/image.png",
+    text: str = '',
+    url: str = 'https://example.com/image.png',
 ) -> platform_message.MessageChain:
     """Create a message chain with an image."""
     components = []
@@ -66,13 +70,15 @@ def image_chain(
 
 
 def command_chain(
-    command: str = "help",
-    prefix: str = "/",
+    command: str = 'help',
+    prefix: str = '/',
 ) -> platform_message.MessageChain:
     """Create a command message chain."""
-    return platform_message.MessageChain([
-        platform_message.Plain(text=f"{prefix}{command}"),
-    ])
+    return platform_message.MessageChain(
+        [
+            platform_message.Plain(text=f'{prefix}{command}'),
+        ]
+    )
 
 
 # ============== Message Event Factories ==============
@@ -81,7 +87,7 @@ def command_chain(
 def friend_message_event(
     message_chain: platform_message.MessageChain,
     sender_id: typing.Union[int, str] = 12345,
-    nickname: str = "TestUser",
+    nickname: str = 'TestUser',
 ) -> platform_events.FriendMessage:
     """Create a friend (private) message event."""
     sender = platform_entities.Friend(
@@ -90,7 +96,7 @@ def friend_message_event(
         remark=None,
     )
     return platform_events.FriendMessage(
-        type="FriendMessage",
+        type='FriendMessage',
         sender=sender,
         message_chain=message_chain,
         time=1609459200,
@@ -100,9 +106,9 @@ def friend_message_event(
 def group_message_event(
     message_chain: platform_message.MessageChain,
     sender_id: typing.Union[int, str] = 12345,
-    sender_name: str = "TestUser",
+    sender_name: str = 'TestUser',
     group_id: typing.Union[int, str] = 99999,
-    group_name: str = "TestGroup",
+    group_name: str = 'TestGroup',
 ) -> platform_events.GroupMessage:
     """Create a group message event."""
     group = platform_entities.Group(
@@ -117,7 +123,7 @@ def group_message_event(
         group=group,
     )
     return platform_events.GroupMessage(
-        type="GroupMessage",
+        type='GroupMessage',
         sender=sender,
         message_chain=message_chain,
         time=1609459200,
@@ -152,36 +158,36 @@ def _base_query(
     query_id = _next_query_id()
 
     base_data = {
-        "query_id": query_id,
-        "launcher_type": launcher_type,
-        "launcher_id": launcher_id,
-        "sender_id": sender_id,
-        "message_chain": message_chain,
-        "message_event": message_event,
-        "adapter": adapter,
-        "pipeline_uuid": "test-pipeline-uuid",
-        "bot_uuid": "test-bot-uuid",
-        "pipeline_config": {
-            "ai": {
-                "runner": {"runner": "local-agent"},
-                "local-agent": {
-                    "model": {"primary": "test-model-uuid", "fallbacks": []},
-                    "prompt": "test-prompt",
+        'query_id': query_id,
+        'launcher_type': launcher_type,
+        'launcher_id': launcher_id,
+        'sender_id': sender_id,
+        'message_chain': message_chain,
+        'message_event': message_event,
+        'adapter': adapter,
+        'pipeline_uuid': 'test-pipeline-uuid',
+        'bot_uuid': 'test-bot-uuid',
+        'pipeline_config': {
+            'ai': {
+                'runner': {'runner': 'local-agent'},
+                'local-agent': {
+                    'model': {'primary': 'test-model-uuid', 'fallbacks': []},
+                    'prompt': 'test-prompt',
                 },
             },
-            "output": {"misc": {"at-sender": False, "quote-origin": False}},
-            "trigger": {"misc": {"combine-quote-message": False}},
+            'output': {'misc': {'at-sender': False, 'quote-origin': False}},
+            'trigger': {'misc': {'combine-quote-message': False}},
         },
-        "session": None,
-        "prompt": None,
-        "messages": [],
-        "user_message": None,
-        "use_funcs": [],
-        "use_llm_model_uuid": None,
-        "variables": {},
-        "resp_messages": [],
-        "resp_message_chain": None,
-        "current_stage_name": None,
+        'session': None,
+        'prompt': None,
+        'messages': [],
+        'user_message': None,
+        'use_funcs': [],
+        'use_llm_model_uuid': None,
+        'variables': {},
+        'resp_messages': [],
+        'resp_message_chain': None,
+        'current_stage_name': None,
     }
 
     # Apply overrides
@@ -192,7 +198,7 @@ def _base_query(
 
 
 def text_query(
-    text: str = "hello",
+    text: str = 'hello',
     sender_id: typing.Union[int, str] = 12345,
     **overrides,
 ) -> pipeline_query.Query:
@@ -212,7 +218,7 @@ def text_query(
 
 
 def private_text_query(
-    text: str = "hello",
+    text: str = 'hello',
     sender_id: typing.Union[int, str] = 12345,
     **overrides,
 ) -> pipeline_query.Query:
@@ -221,7 +227,7 @@ def private_text_query(
 
 
 def group_text_query(
-    text: str = "hello",
+    text: str = 'hello',
     sender_id: typing.Union[int, str] = 12345,
     group_id: typing.Union[int, str] = 99999,
     **overrides,
@@ -242,8 +248,8 @@ def group_text_query(
 
 
 def command_query(
-    command: str = "help",
-    prefix: str = "/",
+    command: str = 'help',
+    prefix: str = '/',
     sender_id: typing.Union[int, str] = 12345,
     **overrides,
 ) -> pipeline_query.Query:
@@ -263,7 +269,7 @@ def command_query(
 
 
 def mention_query(
-    text: str = "hello",
+    text: str = 'hello',
     target: typing.Union[int, str] = 12345,
     sender_id: typing.Union[int, str] = 12345,
     group_id: typing.Union[int, str] = 99999,
@@ -301,8 +307,8 @@ def empty_query(**overrides) -> pipeline_query.Query:
 
 
 def image_query(
-    text: str = "",
-    url: str = "https://example.com/image.png",
+    text: str = '',
+    url: str = 'https://example.com/image.png',
     sender_id: typing.Union[int, str] = 12345,
     **overrides,
 ) -> pipeline_query.Query:
@@ -322,9 +328,9 @@ def image_query(
 
 
 def file_query(
-    url: str = "https://example.com/document.pdf",
-    name: str = "document.pdf",
-    text: str = "",
+    url: str = 'https://example.com/document.pdf',
+    name: str = 'document.pdf',
+    text: str = '',
     sender_id: typing.Union[int, str] = 12345,
     **overrides,
 ) -> pipeline_query.Query:
@@ -348,8 +354,8 @@ def file_query(
 
 
 def unsupported_query(
-    unsupported_type: str = "CustomComponent",
-    text: str = "",
+    unsupported_type: str = 'CustomComponent',
+    text: str = '',
     sender_id: typing.Union[int, str] = 12345,
     **overrides,
 ) -> pipeline_query.Query:
@@ -358,7 +364,7 @@ def unsupported_query(
     if text:
         components.append(platform_message.Plain(text=text))
     # Use Unknown component for unsupported types
-    components.append(platform_message.Unknown(text=f"Unsupported: {unsupported_type}"))
+    components.append(platform_message.Unknown(text=f'Unsupported: {unsupported_type}'))
     chain = platform_message.MessageChain(components)
     event = friend_message_event(chain, sender_id)
     adapter = mock_adapter()
@@ -374,7 +380,7 @@ def unsupported_query(
 
 
 def query_with_session(
-    text: str = "hello",
+    text: str = 'hello',
     sender_id: typing.Union[int, str] = 12345,
     session: provider_session.Session = None,
     **overrides,
@@ -389,7 +395,7 @@ def query_with_session(
             launcher_type=provider_session.LauncherTypes.PERSON,
             launcher_id=sender_id,
             sender_id=sender_id,
-            use_prompt_name="default",
+            use_prompt_name='default',
             using_conversation=None,
             conversations=[],
         )
@@ -398,7 +404,7 @@ def query_with_session(
 
 
 def query_with_config(
-    text: str = "hello",
+    text: str = 'hello',
     sender_id: typing.Union[int, str] = 12345,
     pipeline_config: dict = None,
     **overrides,
@@ -410,22 +416,22 @@ def query_with_config(
     """
     if pipeline_config is None:
         pipeline_config = {
-            "ai": {
-                "runner": {"runner": "local-agent"},
-                "local-agent": {
-                    "model": {"primary": "test-model-uuid", "fallbacks": []},
-                    "prompt": "test-prompt",
+            'ai': {
+                'runner': {'runner': 'local-agent'},
+                'local-agent': {
+                    'model': {'primary': 'test-model-uuid', 'fallbacks': []},
+                    'prompt': 'test-prompt',
                 },
             },
-            "output": {"misc": {"at-sender": False, "quote-origin": False}},
-            "trigger": {"misc": {"combine-quote-message": False}},
+            'output': {'misc': {'at-sender': False, 'quote-origin': False}},
+            'trigger': {'misc': {'combine-quote-message': False}},
         }
 
     return text_query(text, sender_id, pipeline_config=pipeline_config, **overrides)
 
 
 def voice_query(
-    url: str = "https://example.com/audio.mp3",
+    url: str = 'https://example.com/audio.mp3',
     sender_id: typing.Union[int, str] = 12345,
     **overrides,
 ) -> pipeline_query.Query:
@@ -448,7 +454,7 @@ def voice_query(
 
 
 def at_all_query(
-    text: str = "hello",
+    text: str = 'hello',
     sender_id: typing.Union[int, str] = 12345,
     group_id: typing.Union[int, str] = 99999,
     **overrides,
@@ -456,7 +462,7 @@ def at_all_query(
     """Create a group query with @All mention."""
     components = [
         platform_message.AtAll(),
-        platform_message.Plain(text=f" {text}"),
+        platform_message.Plain(text=f' {text}'),
     ]
     chain = platform_message.MessageChain(components)
     event = group_message_event(chain, sender_id, group_id=group_id)
@@ -469,4 +475,4 @@ def at_all_query(
         sender_id=sender_id,
         adapter=adapter,
         **overrides,
-    )
+    )

tests/factories/platform.py

@@ -33,7 +33,7 @@ class FakePlatform:
     def __init__(
         self,
         *,
-        bot_account_id: str = "test-bot",
+        bot_account_id: str = 'test-bot',
         stream_output_supported: bool = False,
         raise_error: Exception = None,
     ):
@@ -48,16 +48,16 @@ class FakePlatform:
         # Registered listeners
         self._listeners: dict = {}
 
-    def raises(self, error: Exception) -> "FakePlatform":
+    def raises(self, error: Exception) -> 'FakePlatform':
         """Configure platform to raise an error on send."""
         self._raise_error = error
         return self
 
-    def send_failure(self) -> "FakePlatform":
+    def send_failure(self) -> 'FakePlatform':
         """Configure platform to simulate send failure."""
-        return self.raises(Exception("Platform send failure"))
+        return self.raises(Exception('Platform send failure'))
 
-    def supports_streaming(self, supported: bool = True) -> "FakePlatform":
+    def supports_streaming(self, supported: bool = True) -> 'FakePlatform':
         """Configure whether streaming output is supported."""
         self._stream_output_supported = supported
         return self
@@ -89,7 +89,7 @@ class FakePlatform:
         self,
         text: str,
         sender_id: typing.Union[int, str] = 12345,
-        nickname: str = "TestUser",
+        nickname: str = 'TestUser',
     ) -> platform_events.FriendMessage:
         """Create an inbound friend (private) message event."""
         sender = platform_entities.Friend(
@@ -97,11 +97,13 @@ class FakePlatform:
             nickname=nickname,
             remark=None,
         )
-        chain = platform_message.MessageChain([
-            platform_message.Plain(text=text),
-        ])
+        chain = platform_message.MessageChain(
+            [
+                platform_message.Plain(text=text),
+            ]
+        )
         return platform_events.FriendMessage(
-            type="FriendMessage",
+            type='FriendMessage',
             sender=sender,
             message_chain=chain,
             time=1609459200,
@@ -111,9 +113,9 @@ class FakePlatform:
         self,
         text: str,
         sender_id: typing.Union[int, str] = 12345,
-        sender_name: str = "TestUser",
+        sender_name: str = 'TestUser',
         group_id: typing.Union[int, str] = 99999,
-        group_name: str = "TestGroup",
+        group_name: str = 'TestGroup',
         mention_bot: bool = False,
     ) -> platform_events.GroupMessage:
         """Create an inbound group message event.
@@ -142,12 +144,12 @@ class FakePlatform:
         components = []
         if mention_bot:
             components.append(platform_message.At(target=self.bot_account_id))
-            components.append(platform_message.Plain(text=" "))
+            components.append(platform_message.Plain(text=' '))
         components.append(platform_message.Plain(text=text))
 
         chain = platform_message.MessageChain(components)
         return platform_events.GroupMessage(
-            type="GroupMessage",
+            type='GroupMessage',
             sender=sender,
             message_chain=chain,
             time=1609459200,
@@ -155,8 +157,8 @@ class FakePlatform:
 
     def create_image_message(
         self,
-        url: str = "https://example.com/image.png",
-        text: str = "",
+        url: str = 'https://example.com/image.png',
+        text: str = '',
         sender_id: typing.Union[int, str] = 12345,
         is_group: bool = False,
         group_id: typing.Union[int, str] = 99999,
@@ -169,12 +171,12 @@ class FakePlatform:
         chain = platform_message.MessageChain(components)
 
         if is_group:
-            return self.create_group_message("", sender_id, group_id=group_id)
+            return self.create_group_message('', sender_id, group_id=group_id)
             # Replace chain
         else:
-            sender = platform_entities.Friend(id=sender_id, nickname="TestUser", remark=None)
+            sender = platform_entities.Friend(id=sender_id, nickname='TestUser', remark=None)
             return platform_events.FriendMessage(
-                type="FriendMessage",
+                type='FriendMessage',
                 sender=sender,
                 message_chain=chain,
                 time=1609459200,
@@ -192,12 +194,14 @@ class FakePlatform:
         if self._raise_error:
             raise self._raise_error
 
-        self._outbound_messages.append({
-            "type": "send",
-            "target_type": target_type,
-            "target_id": target_id,
-            "message": message,
-        })
+        self._outbound_messages.append(
+            {
+                'type': 'send',
+                'target_type': target_type,
+                'target_id': target_id,
+                'message': message,
+            }
+        )
 
     async def reply_message(
         self,
@@ -209,13 +213,15 @@ class FakePlatform:
         if self._raise_error:
             raise self._raise_error
 
-        self._outbound_messages.append({
-            "type": "reply",
-            "source_type": message_source.type,
-            "source": message_source,
-            "message": message,
-            "quote_origin": quote_origin,
-        })
+        self._outbound_messages.append(
+            {
+                'type': 'reply',
+                'source_type': message_source.type,
+                'source': message_source,
+                'message': message,
+                'quote_origin': quote_origin,
+            }
+        )
 
     async def reply_message_chunk(
         self,
@@ -229,15 +235,17 @@ class FakePlatform:
         if self._raise_error:
             raise self._raise_error
 
-        self._outbound_chunks.append({
-            "type": "reply_chunk",
-            "source_type": message_source.type,
-            "source": message_source,
-            "bot_message": bot_message,
-            "message": message,
-            "quote_origin": quote_origin,
-            "is_final": is_final,
-        })
+        self._outbound_chunks.append(
+            {
+                'type': 'reply_chunk',
+                'source_type': message_source.type,
+                'source': message_source,
+                'bot_message': bot_message,
+                'message': message,
+                'quote_origin': quote_origin,
+                'is_final': is_final,
+            }
+        )
 
     async def is_stream_output_supported(self) -> bool:
         """Return whether streaming output is supported."""
@@ -295,7 +303,7 @@ class FakePlatform:
 
 
 def fake_platform(
-    bot_account_id: str = "test-bot",
+    bot_account_id: str = 'test-bot',
     stream_output_supported: bool = False,
 ) -> FakePlatform:
     """Create a FakePlatform instance."""
@@ -328,9 +336,7 @@ def mock_platform_adapter(platform: FakePlatform = None) -> Mock:
     adapter.reply_message = AsyncMock(side_effect=platform.reply_message)
     adapter.reply_message_chunk = AsyncMock(side_effect=platform.reply_message_chunk)
     adapter.send_message = AsyncMock(side_effect=platform.send_message)
-    adapter.is_stream_output_supported = AsyncMock(
-        return_value=platform._stream_output_supported
-    )
+    adapter.is_stream_output_supported = AsyncMock(return_value=platform._stream_output_supported)
     adapter._fake_platform = platform  # Store for assertions
 
-    return adapter
+    return adapter

tests/factories/provider.py

@@ -27,51 +27,51 @@ class FakeProvider:
     Does not require API keys.
     """
 
-    PONG_RESPONSE = "LANGBOT_FAKE_PONG"
+    PONG_RESPONSE = 'LANGBOT_FAKE_PONG'
 
     def __init__(
         self,
         *,
-        default_response: str = "fake response",
+        default_response: str = 'fake response',
         streaming_chunks: list[str] = None,
         raise_error: Exception = None,
         captured_requests: list = None,
     ):
         self._default_response = default_response
-        self._streaming_chunks = streaming_chunks or ["fake ", "response"]
+        self._streaming_chunks = streaming_chunks or ['fake ', 'response']
         self._raise_error = raise_error
         self._captured_requests = captured_requests if captured_requests is not None else []
 
-    def returns(self, text: str) -> "FakeProvider":
+    def returns(self, text: str) -> 'FakeProvider':
         """Configure provider to return a specific text response."""
         self._default_response = text
         self._streaming_chunks = [text]
         return self
 
-    def returns_streaming(self, chunks: list[str]) -> "FakeProvider":
+    def returns_streaming(self, chunks: list[str]) -> 'FakeProvider':
         """Configure provider to return streaming chunks."""
         self._streaming_chunks = chunks
-        self._default_response = "".join(chunks)
+        self._default_response = ''.join(chunks)
         return self
 
-    def raises(self, error: Exception) -> "FakeProvider":
+    def raises(self, error: Exception) -> 'FakeProvider':
         """Configure provider to raise an error."""
         self._raise_error = error
         return self
 
-    def timeout(self) -> "FakeProvider":
+    def timeout(self) -> 'FakeProvider':
         """Configure provider to simulate timeout."""
-        return self.raises(TimeoutError("Provider timeout"))
+        return self.raises(TimeoutError('Provider timeout'))
 
-    def auth_error(self) -> "FakeProvider":
+    def auth_error(self) -> 'FakeProvider':
         """Configure provider to simulate auth error."""
-        return self.raises(Exception("Invalid API key"))
+        return self.raises(Exception('Invalid API key'))
 
-    def rate_limit(self) -> "FakeProvider":
+    def rate_limit(self) -> 'FakeProvider':
         """Configure provider to simulate rate limit."""
-        return self.raises(Exception("Rate limit exceeded"))
+        return self.raises(Exception('Rate limit exceeded'))
 
-    def malformed(self) -> "FakeProvider":
+    def malformed(self) -> 'FakeProvider':
         """Configure provider to simulate malformed response."""
         self._default_response = None
         return self
@@ -87,7 +87,7 @@ class FakeProvider:
     def _create_message(self, content: str) -> provider_message.Message:
         """Create a provider message from text content."""
         return provider_message.Message(
-            role="assistant",
+            role='assistant',
             content=content,
         )
 
@@ -99,7 +99,7 @@ class FakeProvider:
     ) -> provider_message.MessageChunk:
         """Create a provider message chunk."""
         return provider_message.MessageChunk(
-            role="assistant",
+            role='assistant',
             content=content,
             is_final=is_final,
             msg_sequence=msg_sequence,
@@ -116,13 +116,15 @@ class FakeProvider:
     ) -> provider_message.Message:
         """Simulate non-streaming LLM invocation."""
         # Capture request for assertions
-        self._captured_requests.append({
-            "query_id": query.query_id if query else None,
-            "model": model.model_entity.name if model and hasattr(model, 'model_entity') else None,
-            "messages": messages,
-            "funcs": funcs,
-            "extra_args": extra_args,
-        })
+        self._captured_requests.append(
+            {
+                'query_id': query.query_id if query else None,
+                'model': model.model_entity.name if model and hasattr(model, 'model_entity') else None,
+                'messages': messages,
+                'funcs': funcs,
+                'extra_args': extra_args,
+            }
+        )
 
         # Simulate error if configured
         if self._raise_error:
@@ -131,7 +133,7 @@ class FakeProvider:
         # Return response
         if self._default_response is None:
             # Malformed response
-            return provider_message.Message(role="assistant", content=None)
+            return provider_message.Message(role='assistant', content=None)
 
         return self._create_message(self._default_response)
 
@@ -146,14 +148,16 @@ class FakeProvider:
     ) -> typing.AsyncGenerator[provider_message.MessageChunk, None]:
         """Simulate streaming LLM invocation."""
         # Capture request for assertions
-        self._captured_requests.append({
-            "query_id": query.query_id if query else None,
-            "model": model.model_entity.name if model and hasattr(model, 'model_entity') else None,
-            "messages": messages,
-            "funcs": funcs,
-            "extra_args": extra_args,
-            "streaming": True,
-        })
+        self._captured_requests.append(
+            {
+                'query_id': query.query_id if query else None,
+                'model': model.model_entity.name if model and hasattr(model, 'model_entity') else None,
+                'messages': messages,
+                'funcs': funcs,
+                'extra_args': extra_args,
+                'streaming': True,
+            }
+        )
 
         # Simulate error if configured
         if self._raise_error:
@@ -161,12 +165,12 @@ class FakeProvider:
 
         # Yield chunks
         for i, chunk in enumerate(self._streaming_chunks):
-            is_final = (i == len(self._streaming_chunks) - 1)
+            is_final = i == len(self._streaming_chunks) - 1
             yield self._create_chunk(chunk, is_final=is_final, msg_sequence=i)
 
 
 def fake_provider(
-    default_response: str = "fake response",
+    default_response: str = 'fake response',
 ) -> FakeProvider:
     """Create a FakeProvider with optional default response."""
     return FakeProvider(default_response=default_response)
@@ -202,8 +206,8 @@ def fake_provider_malformed() -> FakeProvider:
 
 def fake_model(
     *,
-    uuid: str = "test-model-uuid",
-    name: str = "test-model",
+    uuid: str = 'test-model-uuid',
+    name: str = 'test-model',
     abilities: list[str] = None,
     provider: FakeProvider = None,
 ) -> Mock:
@@ -212,7 +216,7 @@ def fake_model(
     model.model_entity = Mock()
     model.model_entity.uuid = uuid
     model.model_entity.name = name
-    model.model_entity.abilities = abilities or ["func_call", "vision"]
+    model.model_entity.abilities = abilities or ['func_call', 'vision']
     model.model_entity.extra_args = {}
 
     # Attach fake provider
@@ -221,4 +225,4 @@ def fake_model(
 
     model.provider = provider
 
-    return model
+    return model

tests/integration/__init__.py

@@ -3,4 +3,4 @@ Integration tests package.
 
 These tests validate real system behavior with actual database/network resources.
 Run with: uv run pytest tests/integration/ -m "not slow" -q
-"""
+"""

tests/integration/api/__init__.py

@@ -2,4 +2,4 @@
 API integration tests package.
 
 Tests for HTTP API endpoints using Quart test client.
-"""
+"""

tests/integration/api/test_bots.py

@@ -48,6 +48,7 @@ def mock_circular_import_chain():
         clear=clear,
     ):
         import langbot.pkg.api.http.controller.groups.platform.bots as _bots  # noqa: E402, F401
+
         yield
 
 
@@ -56,10 +57,12 @@ def fake_bot_app():
     """Create FakeApp with bot services (module scope for reuse)."""
     app = FakeApp()
 
-    app.instance_config.data.update({
-        'api': {'port': 5300},
-        'system': {'allow_modify_login_info': True, 'limitation': {}},
-    })
+    app.instance_config.data.update(
+        {
+            'api': {'port': 5300},
+            'system': {'allow_modify_login_info': True, 'limitation': {}},
+        }
+    )
 
     # Auth services
     app.user_service = Mock()
@@ -71,28 +74,29 @@ def fake_bot_app():
 
     # Bot service
     app.bot_service = Mock()
-    app.bot_service.get_bots = AsyncMock(return_value=[
-        {
+    app.bot_service.get_bots = AsyncMock(
+        return_value=[
+            {
+                'uuid': 'test-bot-uuid',
+                'name': 'Test Bot',
+                'platform': 'telegram',
+                'pipeline_uuid': 'test-pipeline-uuid',
+            }
+        ]
+    )
+    app.bot_service.get_runtime_bot_info = AsyncMock(
+        return_value={
             'uuid': 'test-bot-uuid',
             'name': 'Test Bot',
             'platform': 'telegram',
             'pipeline_uuid': 'test-pipeline-uuid',
+            'webhook_url': 'https://example.com/webhook/test-bot-uuid',
         }
-    ])
-    app.bot_service.get_runtime_bot_info = AsyncMock(return_value={
-        'uuid': 'test-bot-uuid',
-        'name': 'Test Bot',
-        'platform': 'telegram',
-        'pipeline_uuid': 'test-pipeline-uuid',
-        'webhook_url': 'https://example.com/webhook/test-bot-uuid',
-    })
+    )
     app.bot_service.create_bot = AsyncMock(return_value={'uuid': 'new-bot-uuid'})
     app.bot_service.update_bot = AsyncMock(return_value={})
     app.bot_service.delete_bot = AsyncMock()
-    app.bot_service.list_event_logs = AsyncMock(return_value=(
-        [{'uuid': 'log-1', 'message': 'test log'}],
-        1
-    ))
+    app.bot_service.list_event_logs = AsyncMock(return_value=([{'uuid': 'log-1', 'message': 'test log'}], 1))
     app.bot_service.send_message = AsyncMock()
 
     # Platform manager
@@ -118,10 +122,7 @@ class TestBotEndpoints:
     @pytest.mark.asyncio
     async def test_get_bots_success(self, quart_test_client):
         """GET /api/v1/platform/bots returns bot list."""
-        response = await quart_test_client.get(
-            '/api/v1/platform/bots',
-            headers={'Authorization': 'Bearer test_token'}
-        )
+        response = await quart_test_client.get('/api/v1/platform/bots', headers={'Authorization': 'Bearer test_token'})
 
         assert response.status_code == 200
         data = await response.get_json()
@@ -135,7 +136,7 @@ class TestBotEndpoints:
         response = await quart_test_client.post(
             '/api/v1/platform/bots',
             headers={'Authorization': 'Bearer test_token'},
-            json={'name': 'New Bot', 'platform': 'telegram', 'pipeline_uuid': 'test-pipeline'}
+            json={'name': 'New Bot', 'platform': 'telegram', 'pipeline_uuid': 'test-pipeline'},
         )
 
         assert response.status_code == 200
@@ -147,8 +148,7 @@ class TestBotEndpoints:
     async def test_get_single_bot_success(self, quart_test_client):
         """GET /api/v1/platform/bots/{uuid} returns bot with runtime info."""
         response = await quart_test_client.get(
-            '/api/v1/platform/bots/test-bot-uuid',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/platform/bots/test-bot-uuid', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -162,7 +162,7 @@ class TestBotEndpoints:
         response = await quart_test_client.put(
             '/api/v1/platform/bots/test-bot-uuid',
             headers={'Authorization': 'Bearer test_token'},
-            json={'name': 'Updated Bot'}
+            json={'name': 'Updated Bot'},
         )
 
         assert response.status_code == 200
@@ -173,8 +173,7 @@ class TestBotEndpoints:
     async def test_delete_bot_success(self, quart_test_client):
         """DELETE /api/v1/platform/bots/{uuid} deletes bot."""
         response = await quart_test_client.delete(
-            '/api/v1/platform/bots/test-bot-uuid',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/platform/bots/test-bot-uuid', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -190,7 +189,7 @@ class TestBotLogsEndpoint:
         response = await quart_test_client.post(
             '/api/v1/platform/bots/test-bot-uuid/logs',
             headers={'Authorization': 'Bearer test_token'},
-            json={'from_index': -1, 'max_count': 10}
+            json={'from_index': -1, 'max_count': 10},
         )
 
         assert response.status_code == 200
@@ -213,8 +212,8 @@ class TestBotSendMessageEndpoint:
             json={
                 'target_type': 'person',
                 'target_id': 'user123',
-                'message_chain': [{'type': 'text', 'text': 'Hello'}]
-            }
+                'message_chain': [{'type': 'text', 'text': 'Hello'}],
+            },
         )
 
         assert response.status_code == 200
@@ -228,7 +227,7 @@ class TestBotSendMessageEndpoint:
         response = await quart_test_client.post(
             '/api/v1/platform/bots/test-bot-uuid/send_message',
             headers={'Authorization': 'Bearer test_api_key'},
-            json={'target_id': 'user123', 'message_chain': [{'type': 'text', 'text': 'Hello'}]}
+            json={'target_id': 'user123', 'message_chain': [{'type': 'text', 'text': 'Hello'}]},
         )
 
         assert response.status_code == 400
@@ -244,8 +243,8 @@ class TestBotSendMessageEndpoint:
             json={
                 'target_type': 'invalid',
                 'target_id': 'user123',
-                'message_chain': [{'type': 'text', 'text': 'Hello'}]
-            }
+                'message_chain': [{'type': 'text', 'text': 'Hello'}],
+            },
         )
 
         assert response.status_code == 400

tests/integration/api/test_embed.py

@@ -47,6 +47,7 @@ def mock_circular_import_chain():
         clear=clear,
     ):
         import langbot.pkg.api.http.controller.groups.pipelines.embed as _embed  # noqa: E402, F401
+
         yield
 
 
@@ -55,10 +56,12 @@ def fake_embed_app():
     """Create FakeApp with embed widget services (module scope)."""
     app = FakeApp()
 
-    app.instance_config.data.update({
-        'api': {'port': 5300},
-        'system': {'allow_modify_login_info': True, 'limitation': {}},
-    })
+    app.instance_config.data.update(
+        {
+            'api': {'port': 5300},
+            'system': {'allow_modify_login_info': True, 'limitation': {}},
+        }
+    )
 
     # Create mock web_page_bot with valid UUID format
     mock_bot_entity = Mock()
@@ -83,9 +86,7 @@ def fake_embed_app():
 
     # WebSocket proxy bot with adapter
     mock_websocket_adapter = Mock()
-    mock_websocket_adapter.get_websocket_messages = Mock(return_value=[
-        {'id': 'msg-1', 'content': 'test message'}
-    ])
+    mock_websocket_adapter.get_websocket_messages = Mock(return_value=[{'id': 'msg-1', 'content': 'test message'}])
     mock_websocket_adapter.reset_session = Mock()
     mock_websocket_adapter.handle_websocket_message = AsyncMock()
 
@@ -117,9 +118,7 @@ class TestEmbedWidgetEndpoint:
     @pytest.mark.asyncio
     async def test_get_widget_js_success(self, quart_test_client):
         """GET /api/v1/embed/{bot_uuid}/widget.js returns JS."""
-        response = await quart_test_client.get(
-            '/api/v1/embed/a1b2c3d4-5678-90ab-cdef-123456789abc/widget.js'
-        )
+        response = await quart_test_client.get('/api/v1/embed/a1b2c3d4-5678-90ab-cdef-123456789abc/widget.js')
 
         assert response.status_code == 200
         assert 'javascript' in response.content_type
@@ -127,18 +126,14 @@ class TestEmbedWidgetEndpoint:
     @pytest.mark.asyncio
     async def test_get_widget_js_invalid_uuid(self, quart_test_client):
         """GET widget.js with invalid UUID returns 400."""
-        response = await quart_test_client.get(
-            '/api/v1/embed/invalid-uuid/widget.js'
-        )
+        response = await quart_test_client.get('/api/v1/embed/invalid-uuid/widget.js')
 
         assert response.status_code == 400
 
     @pytest.mark.asyncio
     async def test_get_widget_js_bot_not_found(self, quart_test_client):
         """GET widget.js for non-existent bot returns 404."""
-        response = await quart_test_client.get(
-            '/api/v1/embed/00000000-0000-0000-0000-000000000000/widget.js'
-        )
+        response = await quart_test_client.get('/api/v1/embed/00000000-0000-0000-0000-000000000000/widget.js')
 
         assert response.status_code == 404
 
@@ -164,8 +159,7 @@ class TestEmbedTurnstileVerifyEndpoint:
     async def test_turnstile_verify_no_secret(self, quart_test_client):
         """POST turnstile verify without secret returns dummy token."""
         response = await quart_test_client.post(
-            '/api/v1/embed/a1b2c3d4-5678-90ab-cdef-123456789abc/turnstile/verify',
-            json={'token': 'test-token'}
+            '/api/v1/embed/a1b2c3d4-5678-90ab-cdef-123456789abc/turnstile/verify', json={'token': 'test-token'}
         )
 
         assert response.status_code == 200
@@ -177,8 +171,7 @@ class TestEmbedTurnstileVerifyEndpoint:
     async def test_turnstile_verify_invalid_uuid(self, quart_test_client):
         """POST turnstile verify with invalid UUID returns 400."""
         response = await quart_test_client.post(
-            '/api/v1/embed/invalid-uuid/turnstile/verify',
-            json={'token': 'test-token'}
+            '/api/v1/embed/invalid-uuid/turnstile/verify', json={'token': 'test-token'}
         )
 
         assert response.status_code == 400
@@ -187,8 +180,7 @@ class TestEmbedTurnstileVerifyEndpoint:
     async def test_turnstile_verify_missing_token(self, quart_test_client):
         """POST turnstile verify without token returns 400."""
         response = await quart_test_client.post(
-            '/api/v1/embed/a1b2c3d4-5678-90ab-cdef-123456789abc/turnstile/verify',
-            json={}
+            '/api/v1/embed/a1b2c3d4-5678-90ab-cdef-123456789abc/turnstile/verify', json={}
         )
 
         assert response.status_code == 400
@@ -203,7 +195,7 @@ class TestEmbedMessagesEndpoint:
         """GET messages/person returns messages."""
         response = await quart_test_client.get(
             '/api/v1/embed/a1b2c3d4-5678-90ab-cdef-123456789abc/messages/person',
-            headers={'Authorization': 'Bearer 1234567890.dummy'}
+            headers={'Authorization': 'Bearer 1234567890.dummy'},
         )
 
         assert response.status_code == 200
@@ -216,7 +208,7 @@ class TestEmbedMessagesEndpoint:
         """GET messages/group returns messages."""
         response = await quart_test_client.get(
             '/api/v1/embed/a1b2c3d4-5678-90ab-cdef-123456789abc/messages/group',
-            headers={'Authorization': 'Bearer 1234567890.dummy'}
+            headers={'Authorization': 'Bearer 1234567890.dummy'},
         )
 
         assert response.status_code == 200
@@ -226,7 +218,7 @@ class TestEmbedMessagesEndpoint:
         """GET messages with invalid session_type returns 400."""
         response = await quart_test_client.get(
             '/api/v1/embed/a1b2c3d4-5678-90ab-cdef-123456789abc/messages/invalid',
-            headers={'Authorization': 'Bearer 1234567890.dummy'}
+            headers={'Authorization': 'Bearer 1234567890.dummy'},
         )
 
         assert response.status_code == 400
@@ -241,7 +233,7 @@ class TestEmbedResetEndpoint:
         """POST reset/person resets session."""
         response = await quart_test_client.post(
             '/api/v1/embed/a1b2c3d4-5678-90ab-cdef-123456789abc/reset/person',
-            headers={'Authorization': 'Bearer 1234567890.dummy'}
+            headers={'Authorization': 'Bearer 1234567890.dummy'},
         )
 
         assert response.status_code == 200
@@ -252,8 +244,7 @@ class TestEmbedResetEndpoint:
     async def test_reset_session_invalid_uuid(self, quart_test_client):
         """POST reset with invalid UUID returns 400."""
         response = await quart_test_client.post(
-            '/api/v1/embed/invalid-uuid/reset/person',
-            headers={'Authorization': 'Bearer 1234567890.dummy'}
+            '/api/v1/embed/invalid-uuid/reset/person', headers={'Authorization': 'Bearer 1234567890.dummy'}
         )
 
         assert response.status_code == 400
@@ -269,7 +260,7 @@ class TestEmbedFeedbackEndpoint:
         response = await quart_test_client.post(
             '/api/v1/embed/a1b2c3d4-5678-90ab-cdef-123456789abc/feedback',
             headers={'Authorization': 'Bearer 1234567890.dummy'},
-            json={'message_id': 'msg-123', 'feedback_type': 1}
+            json={'message_id': 'msg-123', 'feedback_type': 1},
         )
 
         assert response.status_code == 200
@@ -283,7 +274,7 @@ class TestEmbedFeedbackEndpoint:
         response = await quart_test_client.post(
             '/api/v1/embed/a1b2c3d4-5678-90ab-cdef-123456789abc/feedback',
             headers={'Authorization': 'Bearer 1234567890.dummy'},
-            json={'message_id': 'msg-123', 'feedback_type': 2}
+            json={'message_id': 'msg-123', 'feedback_type': 2},
         )
 
         assert response.status_code == 200
@@ -294,7 +285,7 @@ class TestEmbedFeedbackEndpoint:
         response = await quart_test_client.post(
             '/api/v1/embed/a1b2c3d4-5678-90ab-cdef-123456789abc/feedback',
             headers={'Authorization': 'Bearer 1234567890.dummy'},
-            json={'message_id': 'msg-123', 'feedback_type': 99}
+            json={'message_id': 'msg-123', 'feedback_type': 99},
         )
 
         assert response.status_code == 400

tests/integration/api/test_knowledge.py

@@ -49,6 +49,7 @@ def mock_circular_import_chain():
         clear=clear,
     ):
         import langbot.pkg.api.http.controller.groups.knowledge.base as _knowledge  # noqa: E402, F401
+
         yield
 
 
@@ -57,10 +58,12 @@ def fake_knowledge_app():
     """Create FakeApp with knowledge services (module scope for reuse)."""
     app = FakeApp()
 
-    app.instance_config.data.update({
-        'api': {'port': 5300},
-        'system': {'allow_modify_login_info': True, 'limitation': {}},
-    })
+    app.instance_config.data.update(
+        {
+            'api': {'port': 5300},
+            'system': {'allow_modify_login_info': True, 'limitation': {}},
+        }
+    )
 
     # Auth services
     app.user_service = Mock()
@@ -72,33 +75,35 @@ def fake_knowledge_app():
 
     # Knowledge service
     app.knowledge_service = Mock()
-    app.knowledge_service.get_knowledge_bases = AsyncMock(return_value=[
-        {
+    app.knowledge_service.get_knowledge_bases = AsyncMock(
+        return_value=[
+            {
+                'uuid': 'test-kb-uuid',
+                'name': 'Test Knowledge Base',
+                'description': 'Test KB description',
+                'engine_plugin_id': 'test/engine',
+                'created_at': '2024-01-01T00:00:00',
+                'updated_at': '2024-01-01T00:00:00',
+            }
+        ]
+    )
+    app.knowledge_service.get_knowledge_base = AsyncMock(
+        return_value={
             'uuid': 'test-kb-uuid',
             'name': 'Test Knowledge Base',
             'description': 'Test KB description',
             'engine_plugin_id': 'test/engine',
-            'created_at': '2024-01-01T00:00:00',
-            'updated_at': '2024-01-01T00:00:00',
         }
-    ])
-    app.knowledge_service.get_knowledge_base = AsyncMock(return_value={
-        'uuid': 'test-kb-uuid',
-        'name': 'Test Knowledge Base',
-        'description': 'Test KB description',
-        'engine_plugin_id': 'test/engine',
-    })
+    )
     app.knowledge_service.create_knowledge_base = AsyncMock(return_value={'uuid': 'new-kb-uuid'})
     app.knowledge_service.update_knowledge_base = AsyncMock(return_value={})
     app.knowledge_service.delete_knowledge_base = AsyncMock()
-    app.knowledge_service.get_files_by_knowledge_base = AsyncMock(return_value=[
-        {'uuid': 'test-file-uuid', 'filename': 'test.pdf'}
-    ])
+    app.knowledge_service.get_files_by_knowledge_base = AsyncMock(
+        return_value=[{'uuid': 'test-file-uuid', 'filename': 'test.pdf'}]
+    )
     app.knowledge_service.store_file = AsyncMock(return_value={'task_id': 'test-task-id'})
     app.knowledge_service.delete_file = AsyncMock()
-    app.knowledge_service.retrieve_knowledge_base = AsyncMock(return_value=[
-        {'content': 'test result', 'score': 0.95}
-    ])
+    app.knowledge_service.retrieve_knowledge_base = AsyncMock(return_value=[{'content': 'test result', 'score': 0.95}])
 
     # RAG manager
     app.rag_mgr = Mock()
@@ -124,8 +129,7 @@ class TestKnowledgeBaseEndpoints:
     async def test_get_knowledge_bases_success(self, quart_test_client):
         """GET /api/v1/knowledge/bases returns knowledge base list."""
         response = await quart_test_client.get(
-            '/api/v1/knowledge/bases',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/knowledge/bases', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -140,7 +144,7 @@ class TestKnowledgeBaseEndpoints:
         response = await quart_test_client.post(
             '/api/v1/knowledge/bases',
             headers={'Authorization': 'Bearer test_token'},
-            json={'name': 'New KB', 'engine_plugin_id': 'test/engine'}
+            json={'name': 'New KB', 'engine_plugin_id': 'test/engine'},
         )
 
         assert response.status_code == 200
@@ -152,8 +156,7 @@ class TestKnowledgeBaseEndpoints:
     async def test_get_single_knowledge_base_success(self, quart_test_client):
         """GET /api/v1/knowledge/bases/{uuid} returns knowledge base."""
         response = await quart_test_client.get(
-            '/api/v1/knowledge/bases/test-kb-uuid',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/knowledge/bases/test-kb-uuid', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -167,7 +170,7 @@ class TestKnowledgeBaseEndpoints:
         response = await quart_test_client.put(
             '/api/v1/knowledge/bases/test-kb-uuid',
             headers={'Authorization': 'Bearer test_token'},
-            json={'name': 'Updated KB'}
+            json={'name': 'Updated KB'},
         )
 
         assert response.status_code == 200
@@ -178,8 +181,7 @@ class TestKnowledgeBaseEndpoints:
     async def test_delete_knowledge_base_success(self, quart_test_client):
         """DELETE /api/v1/knowledge/bases/{uuid} deletes knowledge base."""
         response = await quart_test_client.delete(
-            '/api/v1/knowledge/bases/test-kb-uuid',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/knowledge/bases/test-kb-uuid', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -193,8 +195,7 @@ class TestKnowledgeBaseFilesEndpoints:
     async def test_get_files_success(self, quart_test_client):
         """GET /api/v1/knowledge/bases/{uuid}/files returns files."""
         response = await quart_test_client.get(
-            '/api/v1/knowledge/bases/test-kb-uuid/files',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/knowledge/bases/test-kb-uuid/files', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -208,7 +209,7 @@ class TestKnowledgeBaseFilesEndpoints:
         response = await quart_test_client.post(
             '/api/v1/knowledge/bases/test-kb-uuid/files',
             headers={'Authorization': 'Bearer test_token'},
-            json={'file_id': 'test-file-id', 'parser_plugin_id': 'test/parser'}
+            json={'file_id': 'test-file-id', 'parser_plugin_id': 'test/parser'},
         )
 
         assert response.status_code == 200
@@ -220,8 +221,7 @@ class TestKnowledgeBaseFilesEndpoints:
     async def test_delete_file_from_knowledge_base(self, quart_test_client):
         """DELETE /api/v1/knowledge/bases/{uuid}/files/{file_id}."""
         response = await quart_test_client.delete(
-            '/api/v1/knowledge/bases/test-kb-uuid/files/test-file-uuid',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/knowledge/bases/test-kb-uuid/files/test-file-uuid', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -237,7 +237,7 @@ class TestKnowledgeBaseRetrieveEndpoint:
         response = await quart_test_client.post(
             '/api/v1/knowledge/bases/test-kb-uuid/retrieve',
             headers={'Authorization': 'Bearer test_token'},
-            json={'query': 'test query', 'retrieval_settings': {'top_k': 5}}
+            json={'query': 'test query', 'retrieval_settings': {'top_k': 5}},
         )
 
         assert response.status_code == 200
@@ -249,9 +249,7 @@ class TestKnowledgeBaseRetrieveEndpoint:
     async def test_retrieve_without_query_returns_error(self, quart_test_client):
         """POST retrieve without query returns 400."""
         response = await quart_test_client.post(
-            '/api/v1/knowledge/bases/test-kb-uuid/retrieve',
-            headers={'Authorization': 'Bearer test_token'},
-            json={}
+            '/api/v1/knowledge/bases/test-kb-uuid/retrieve', headers={'Authorization': 'Bearer test_token'}, json={}
         )
 
         assert response.status_code == 400

tests/integration/api/test_monitoring.py

@@ -46,6 +46,7 @@ def mock_circular_import_chain():
         clear=clear,
     ):
         import langbot.pkg.api.http.controller.groups.monitoring as _monitoring  # noqa: E402, F401
+
         yield
 
 
@@ -54,10 +55,12 @@ def fake_monitoring_app():
     """Create FakeApp with monitoring services (module scope)."""
     app = FakeApp()
 
-    app.instance_config.data.update({
-        'api': {'port': 5300},
-        'system': {'allow_modify_login_info': True, 'limitation': {}},
-    })
+    app.instance_config.data.update(
+        {
+            'api': {'port': 5300},
+            'system': {'allow_modify_login_info': True, 'limitation': {}},
+        }
+    )
 
     # Auth services - USER_TOKEN auth requires jwt verification AND get_user_by_email
     app.user_service = Mock()
@@ -67,40 +70,34 @@ def fake_monitoring_app():
 
     # Monitoring service
     app.monitoring_service = Mock()
-    app.monitoring_service.get_overview_metrics = AsyncMock(return_value={
-        'total_messages': 100,
-        'total_llm_calls': 50,
-        'total_sessions': 20,
-        'active_sessions': 5,
-        'total_errors': 2,
-    })
-    app.monitoring_service.get_messages = AsyncMock(return_value=(
-        [{'id': 'msg-1', 'content': 'test'}], 100
-    ))
-    app.monitoring_service.get_llm_calls = AsyncMock(return_value=(
-        [{'id': 'llm-1'}], 50
-    ))
-    app.monitoring_service.get_embedding_calls = AsyncMock(return_value=(
-        [{'id': 'emb-1'}], 10
-    ))
-    app.monitoring_service.get_sessions = AsyncMock(return_value=(
-        [{'session_id': 'sess-1'}], 20
-    ))
-    app.monitoring_service.get_errors = AsyncMock(return_value=(
-        [{'id': 'err-1'}], 2
-    ))
-    app.monitoring_service.get_session_analysis = AsyncMock(return_value={
-        'found': True,
-        'session_id': 'sess-1',
-    })
-    app.monitoring_service.get_message_details = AsyncMock(return_value={
-        'found': True,
-        'message_id': 'msg-1',
-    })
+    app.monitoring_service.get_overview_metrics = AsyncMock(
+        return_value={
+            'total_messages': 100,
+            'total_llm_calls': 50,
+            'total_sessions': 20,
+            'active_sessions': 5,
+            'total_errors': 2,
+        }
+    )
+    app.monitoring_service.get_messages = AsyncMock(return_value=([{'id': 'msg-1', 'content': 'test'}], 100))
+    app.monitoring_service.get_llm_calls = AsyncMock(return_value=([{'id': 'llm-1'}], 50))
+    app.monitoring_service.get_embedding_calls = AsyncMock(return_value=([{'id': 'emb-1'}], 10))
+    app.monitoring_service.get_sessions = AsyncMock(return_value=([{'session_id': 'sess-1'}], 20))
+    app.monitoring_service.get_errors = AsyncMock(return_value=([{'id': 'err-1'}], 2))
+    app.monitoring_service.get_session_analysis = AsyncMock(
+        return_value={
+            'found': True,
+            'session_id': 'sess-1',
+        }
+    )
+    app.monitoring_service.get_message_details = AsyncMock(
+        return_value={
+            'found': True,
+            'message_id': 'msg-1',
+        }
+    )
     app.monitoring_service.get_feedback_stats = AsyncMock(return_value={'like_count': 10})
-    app.monitoring_service.get_feedback_list = AsyncMock(return_value=(
-        [{'feedback_id': 'fb-1'}], 12
-    ))
+    app.monitoring_service.get_feedback_list = AsyncMock(return_value=([{'feedback_id': 'fb-1'}], 12))
     app.monitoring_service.export_messages = AsyncMock(return_value=[{'id': 'msg-1'}])
     app.monitoring_service.export_llm_calls = AsyncMock(return_value=[{'id': 'llm-1'}])
     app.monitoring_service.export_errors = AsyncMock(return_value=[{'id': 'err-1'}])
@@ -130,8 +127,7 @@ class TestMonitoringOverviewEndpoint:
     async def test_get_overview_success(self, quart_test_client):
         """GET /api/v1/monitoring/overview returns metrics."""
         response = await quart_test_client.get(
-            '/api/v1/monitoring/overview',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/monitoring/overview', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -147,8 +143,7 @@ class TestMonitoringMessagesEndpoint:
     async def test_get_messages_success(self, quart_test_client):
         """GET /api/v1/monitoring/messages returns message list."""
         response = await quart_test_client.get(
-            '/api/v1/monitoring/messages',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/monitoring/messages', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -165,8 +160,7 @@ class TestMonitoringLLMCallsEndpoint:
     async def test_get_llm_calls_success(self, quart_test_client):
         """GET /api/v1/monitoring/llm-calls."""
         response = await quart_test_client.get(
-            '/api/v1/monitoring/llm-calls',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/monitoring/llm-calls', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -180,8 +174,7 @@ class TestMonitoringEmbeddingCallsEndpoint:
     async def test_get_embedding_calls_success(self, quart_test_client):
         """GET /api/v1/monitoring/embedding-calls."""
         response = await quart_test_client.get(
-            '/api/v1/monitoring/embedding-calls',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/monitoring/embedding-calls', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -195,8 +188,7 @@ class TestMonitoringSessionsEndpoint:
     async def test_get_sessions_success(self, quart_test_client):
         """GET /api/v1/monitoring/sessions."""
         response = await quart_test_client.get(
-            '/api/v1/monitoring/sessions',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/monitoring/sessions', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -210,8 +202,7 @@ class TestMonitoringErrorsEndpoint:
     async def test_get_errors_success(self, quart_test_client):
         """GET /api/v1/monitoring/errors."""
         response = await quart_test_client.get(
-            '/api/v1/monitoring/errors',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/monitoring/errors', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -225,8 +216,7 @@ class TestMonitoringAllDataEndpoint:
     async def test_get_all_data_success(self, quart_test_client):
         """GET /api/v1/monitoring/data returns all data."""
         response = await quart_test_client.get(
-            '/api/v1/monitoring/data',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/monitoring/data', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -242,8 +232,7 @@ class TestMonitoringDetailsEndpoints:
     async def test_get_session_analysis(self, quart_test_client):
         """GET /api/v1/monitoring/sessions/{id}/analysis."""
         response = await quart_test_client.get(
-            '/api/v1/monitoring/sessions/sess-1/analysis',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/monitoring/sessions/sess-1/analysis', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -252,8 +241,7 @@ class TestMonitoringDetailsEndpoints:
     async def test_get_message_details(self, quart_test_client):
         """GET /api/v1/monitoring/messages/{id}/details."""
         response = await quart_test_client.get(
-            '/api/v1/monitoring/messages/msg-1/details',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/monitoring/messages/msg-1/details', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -267,8 +255,7 @@ class TestMonitoringFeedbackEndpoints:
     async def test_get_feedback_stats(self, quart_test_client):
         """GET /api/v1/monitoring/feedback/stats."""
         response = await quart_test_client.get(
-            '/api/v1/monitoring/feedback/stats',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/monitoring/feedback/stats', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -277,8 +264,7 @@ class TestMonitoringFeedbackEndpoints:
     async def test_get_feedback_list(self, quart_test_client):
         """GET /api/v1/monitoring/feedback."""
         response = await quart_test_client.get(
-            '/api/v1/monitoring/feedback',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/monitoring/feedback', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -292,8 +278,7 @@ class TestMonitoringExportEndpoint:
     async def test_export_messages(self, quart_test_client):
         """GET export?type=messages returns CSV."""
         response = await quart_test_client.get(
-            '/api/v1/monitoring/export?type=messages',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/monitoring/export?type=messages', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -303,8 +288,7 @@ class TestMonitoringExportEndpoint:
     async def test_export_llm_calls(self, quart_test_client):
         """GET export?type=llm-calls returns CSV."""
         response = await quart_test_client.get(
-            '/api/v1/monitoring/export?type=llm-calls',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/monitoring/export?type=llm-calls', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -313,8 +297,7 @@ class TestMonitoringExportEndpoint:
     async def test_export_sessions(self, quart_test_client):
         """GET export?type=sessions returns CSV."""
         response = await quart_test_client.get(
-            '/api/v1/monitoring/export?type=sessions',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/monitoring/export?type=sessions', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -323,8 +306,7 @@ class TestMonitoringExportEndpoint:
     async def test_export_feedback(self, quart_test_client):
         """GET export?type=feedback returns CSV."""
         response = await quart_test_client.get(
-            '/api/v1/monitoring/export?type=feedback',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/monitoring/export?type=feedback', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200

tests/integration/api/test_providers.py

@@ -49,6 +49,7 @@ def mock_circular_import_chain():
     ):
         import langbot.pkg.api.http.controller.groups.provider.providers as _providers  # noqa: E402, F401
         import langbot.pkg.api.http.controller.groups.provider.models as _models  # noqa: E402, F401
+
         yield
 
 
@@ -57,10 +58,12 @@ def fake_provider_app():
     """Create FakeApp with provider/model services (module scope for reuse)."""
     app = FakeApp()
 
-    app.instance_config.data.update({
-        'api': {'port': 5300},
-        'system': {'allow_modify_login_info': True, 'limitation': {}},
-    })
+    app.instance_config.data.update(
+        {
+            'api': {'port': 5300},
+            'system': {'allow_modify_login_info': True, 'limitation': {}},
+        }
+    )
 
     # Auth services
     app.user_service = Mock()
@@ -72,27 +75,23 @@ def fake_provider_app():
 
     # Provider service
     app.provider_service = Mock()
-    app.provider_service.get_providers = AsyncMock(return_value=[
-        {'uuid': 'test-provider-uuid', 'name': 'OpenAI', 'requester': 'chatcmpl'}
-    ])
-    app.provider_service.get_provider = AsyncMock(return_value={
-        'uuid': 'test-provider-uuid', 'name': 'OpenAI', 'requester': 'chatcmpl'
-    })
+    app.provider_service.get_providers = AsyncMock(
+        return_value=[{'uuid': 'test-provider-uuid', 'name': 'OpenAI', 'requester': 'chatcmpl'}]
+    )
+    app.provider_service.get_provider = AsyncMock(
+        return_value={'uuid': 'test-provider-uuid', 'name': 'OpenAI', 'requester': 'chatcmpl'}
+    )
     app.provider_service.create_provider = AsyncMock(return_value='new-provider-uuid')
     app.provider_service.update_provider = AsyncMock(return_value={})
     app.provider_service.delete_provider = AsyncMock()
-    app.provider_service.get_provider_model_counts = AsyncMock(return_value={
-        'llm_count': 2, 'embedding_count': 1, 'rerank_count': 0
-    })
+    app.provider_service.get_provider_model_counts = AsyncMock(
+        return_value={'llm_count': 2, 'embedding_count': 1, 'rerank_count': 0}
+    )
 
     # LLM model service
     app.llm_model_service = Mock()
-    app.llm_model_service.get_llm_models = AsyncMock(return_value=[
-        {'uuid': 'test-model-uuid', 'name': 'gpt-4'}
-    ])
-    app.llm_model_service.get_llm_model = AsyncMock(return_value={
-        'uuid': 'test-model-uuid', 'name': 'gpt-4'
-    })
+    app.llm_model_service.get_llm_models = AsyncMock(return_value=[{'uuid': 'test-model-uuid', 'name': 'gpt-4'}])
+    app.llm_model_service.get_llm_model = AsyncMock(return_value={'uuid': 'test-model-uuid', 'name': 'gpt-4'})
     app.llm_model_service.create_llm_model = AsyncMock(return_value={'uuid': 'new-model-uuid'})
     app.llm_model_service.update_llm_model = AsyncMock(return_value={})
     app.llm_model_service.delete_llm_model = AsyncMock()
@@ -133,8 +132,7 @@ class TestProviderEndpoints:
     async def test_get_providers_success(self, quart_test_client):
         """GET /api/v1/provider/providers returns provider list with complete structure."""
         response = await quart_test_client.get(
-            '/api/v1/provider/providers',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/provider/providers', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -157,8 +155,7 @@ class TestProviderEndpoints:
     async def test_get_single_provider_success(self, quart_test_client):
         """GET /api/v1/provider/providers/{uuid} returns complete provider structure."""
         response = await quart_test_client.get(
-            '/api/v1/provider/providers/test-provider-uuid',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/provider/providers/test-provider-uuid', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -177,7 +174,7 @@ class TestProviderEndpoints:
         response = await quart_test_client.post(
             '/api/v1/provider/providers',
             headers={'Authorization': 'Bearer test_token'},
-            json={'name': 'New Provider', 'requester': 'chatcmpl'}
+            json={'name': 'New Provider', 'requester': 'chatcmpl'},
         )
 
         assert response.status_code == 200
@@ -194,7 +191,7 @@ class TestProviderEndpoints:
         response = await quart_test_client.put(
             '/api/v1/provider/providers/test-provider-uuid',
             headers={'Authorization': 'Bearer test_token'},
-            json={'name': 'Updated Provider'}
+            json={'name': 'Updated Provider'},
         )
 
         assert response.status_code == 200
@@ -205,8 +202,7 @@ class TestProviderEndpoints:
     async def test_delete_provider_success(self, quart_test_client):
         """DELETE /api/v1/provider/providers/{uuid} deletes provider."""
         response = await quart_test_client.delete(
-            '/api/v1/provider/providers/test-provider-uuid',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/provider/providers/test-provider-uuid', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -215,8 +211,7 @@ class TestProviderEndpoints:
     async def test_get_provider_includes_model_counts(self, quart_test_client):
         """GET provider response includes model counts."""
         response = await quart_test_client.get(
-            '/api/v1/provider/providers/test-provider-uuid',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/provider/providers/test-provider-uuid', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -237,8 +232,7 @@ class TestModelEndpoints:
     async def test_get_llm_models_success(self, quart_test_client):
         """GET /api/v1/provider/models/llm returns model list."""
         response = await quart_test_client.get(
-            '/api/v1/provider/models/llm',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/provider/models/llm', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -250,8 +244,7 @@ class TestModelEndpoints:
     async def test_get_single_llm_model_success(self, quart_test_client):
         """GET /api/v1/provider/models/llm/{uuid} returns model."""
         response = await quart_test_client.get(
-            '/api/v1/provider/models/llm/test-model-uuid',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/provider/models/llm/test-model-uuid', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -264,7 +257,7 @@ class TestModelEndpoints:
         response = await quart_test_client.post(
             '/api/v1/provider/models/llm',
             headers={'Authorization': 'Bearer test_token'},
-            json={'name': 'New Model', 'provider_uuid': 'test-provider-uuid'}
+            json={'name': 'New Model', 'provider_uuid': 'test-provider-uuid'},
         )
 
         assert response.status_code == 200
@@ -276,8 +269,7 @@ class TestModelEndpoints:
     async def test_delete_llm_model_success(self, quart_test_client):
         """DELETE /api/v1/provider/models/llm/{uuid} deletes model."""
         response = await quart_test_client.delete(
-            '/api/v1/provider/models/llm/test-model-uuid',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/provider/models/llm/test-model-uuid', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -291,8 +283,7 @@ class TestEmbeddingModelEndpoints:
     async def test_get_embedding_models_success(self, quart_test_client):
         """GET /api/v1/provider/models/embedding returns model list."""
         response = await quart_test_client.get(
-            '/api/v1/provider/models/embedding',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/provider/models/embedding', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -306,7 +297,7 @@ class TestEmbeddingModelEndpoints:
         response = await quart_test_client.post(
             '/api/v1/provider/models/embedding',
             headers={'Authorization': 'Bearer test_token'},
-            json={'name': 'New Embedding Model', 'provider_uuid': 'test-provider-uuid'}
+            json={'name': 'New Embedding Model', 'provider_uuid': 'test-provider-uuid'},
         )
 
         assert response.status_code == 200
@@ -323,8 +314,7 @@ class TestRerankModelEndpoints:
     async def test_get_rerank_models_success(self, quart_test_client):
         """GET /api/v1/provider/models/rerank returns model list."""
         response = await quart_test_client.get(
-            '/api/v1/provider/models/rerank',
-            headers={'Authorization': 'Bearer test_token'}
+            '/api/v1/provider/models/rerank', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -338,7 +328,7 @@ class TestRerankModelEndpoints:
         response = await quart_test_client.post(
             '/api/v1/provider/models/rerank',
             headers={'Authorization': 'Bearer test_token'},
-            json={'name': 'New Rerank Model', 'provider_uuid': 'test-provider-uuid'}
+            json={'name': 'New Rerank Model', 'provider_uuid': 'test-provider-uuid'},
         )
 
         assert response.status_code == 200

tests/integration/api/test_smoke.py

@@ -20,6 +20,7 @@ pytestmark = pytest.mark.integration
 
 # ============== FIXTURE FOR SYS.MODULES ISOLATION ==============
 
+
 @pytest.fixture(scope='module')
 def mock_circular_import_chain():
     """
@@ -69,6 +70,7 @@ def mock_circular_import_chain():
 
 # ============== FAKE APPLICATION FOR API TESTS ==============
 
+
 @pytest.fixture
 def fake_api_app():
     """
@@ -79,12 +81,14 @@ def fake_api_app():
     app = FakeApp()
 
     # API-specific config
-    app.instance_config.data.update({
-        'api': {'port': 5300},
-        'plugin': {'enable_marketplace': True},
-        'space': {'url': 'https://space.langbot.app'},
-        'system': {'allow_modify_login_info': True, 'limitation': {}},
-    })
+    app.instance_config.data.update(
+        {
+            'api': {'port': 5300},
+            'plugin': {'enable_marketplace': True},
+            'space': {'url': 'https://space.langbot.app'},
+            'system': {'allow_modify_login_info': True, 'limitation': {}},
+        }
+    )
 
     # API-specific services
     app.user_service = Mock()
@@ -118,6 +122,7 @@ def fake_api_app():
 
 # ============== QUART TEST CLIENT FIXTURE ==============
 
+
 @pytest.fixture
 async def quart_test_client(fake_api_app, http_controller_cls):
     """
@@ -135,6 +140,7 @@ async def quart_test_client(fake_api_app, http_controller_cls):
 
 # ============== API SMOKE TESTS ==============
 
+
 @pytest.mark.usefixtures('mock_circular_import_chain')
 class TestHealthEndpoint:
     """Tests for /healthz endpoint - simplest smoke test."""
@@ -222,8 +228,7 @@ class TestProtectedEndpoints:
         Protected endpoint returns 401 with invalid token.
         """
         response = await quart_test_client.get(
-            '/api/v1/user/check-token',
-            headers={'Authorization': 'Bearer invalid_token'}
+            '/api/v1/user/check-token', headers={'Authorization': 'Bearer invalid_token'}
         )
 
         assert response.status_code == 401
@@ -254,10 +259,7 @@ class TestInvalidPayload:
         """
         POST with wrong JSON structure returns stable error.
         """
-        response = await quart_test_client.post(
-            '/api/v1/user/auth',
-            json={'wrong_field': 'value'}
-        )
+        response = await quart_test_client.post('/api/v1/user/auth', json={'wrong_field': 'value'})
 
         # Should return error with stable JSON structure
         assert response.status_code in (400, 500, 401)

tests/integration/persistence/__init__.py

@@ -2,4 +2,4 @@
 Persistence integration tests package.
 
 Tests for database migrations and storage behavior.
-"""
+"""

tests/integration/persistence/test_migrations.py

@@ -26,8 +26,8 @@ pytestmark = pytest.mark.integration
 @pytest.fixture
 def sqlite_db_url(tmp_path):
     """Create SQLite URL with temporary database file."""
-    db_file = tmp_path / "test_migrations.db"
-    return f"sqlite+aiosqlite:///{db_file}"
+    db_file = tmp_path / 'test_migrations.db'
+    return f'sqlite+aiosqlite:///{db_file}'
 
 
 @pytest.fixture
@@ -102,9 +102,9 @@ class TestSQLiteMigrationUpgrade:
 
         # Verify revision
         rev = await get_alembic_current(sqlite_engine)
-        assert rev is not None, "Expected a revision after upgrade"
+        assert rev is not None, 'Expected a revision after upgrade'
         # Head should be the latest migration
-        assert rev.startswith('0005'), f"Expected head to be 0005_*, got {rev}"
+        assert rev.startswith('0005'), f'Expected head to be 0005_*, got {rev}'
 
     @pytest.mark.asyncio
     async def test_upgrade_idempotent(self, sqlite_engine):
@@ -131,7 +131,7 @@ class TestSQLiteMigrationUpgrade:
         await run_alembic_upgrade(sqlite_engine, 'head')
 
         rev2 = await get_alembic_current(sqlite_engine)
-        assert rev2 == rev1, f"Expected {rev1}, got {rev2}"
+        assert rev2 == rev1, f'Expected {rev1}, got {rev2}'
 
 
 class TestSQLiteMigrationFreshDatabase:
@@ -149,8 +149,8 @@ class TestSQLiteMigrationFreshDatabase:
         4. Verify revision
         """
         # Use different DB file for fresh test
-        fresh_db_file = tmp_path / "test_migrations_fresh.db"
-        fresh_url = f"sqlite+aiosqlite:///{fresh_db_file}"
+        fresh_db_file = tmp_path / 'test_migrations_fresh.db'
+        fresh_url = f'sqlite+aiosqlite:///{fresh_db_file}'
         fresh_engine = create_async_engine(fresh_url)
 
         # Create tables on fresh DB
@@ -162,7 +162,7 @@ class TestSQLiteMigrationFreshDatabase:
 
         # Verify revision
         rev = await get_alembic_current(fresh_engine)
-        assert rev is not None, "Expected a revision on fresh DB"
+        assert rev is not None, 'Expected a revision on fresh DB'
 
         await fresh_engine.dispose()
 
@@ -181,8 +181,8 @@ class TestSQLiteMigrationFreshDatabase:
         IMPORTANT: This test verifies the ACTUAL behavior, not accepting
         any arbitrary failure with try-except pass.
         """
-        fresh_db_file = tmp_path / "test_empty_migrations.db"
-        fresh_url = f"sqlite+aiosqlite:///{fresh_db_file}"
+        fresh_db_file = tmp_path / 'test_empty_migrations.db'
+        fresh_url = f'sqlite+aiosqlite:///{fresh_db_file}'
         fresh_engine = create_async_engine(fresh_url)
 
         # Capture the actual behavior
@@ -201,23 +201,23 @@ class TestSQLiteMigrationFreshDatabase:
         # Verify specific behavior - one of two outcomes is expected
         if actual_result is not None:
             # Migration succeeded - verify revision exists
-            assert actual_result is not None, "Revision should exist after successful migration"
+            assert actual_result is not None, 'Revision should exist after successful migration'
         else:
             # Migration failed - verify the error type is known
             # Alembic typically raises specific errors for missing tables
-            assert actual_error is not None, "Error should be captured if migration failed"
+            assert actual_error is not None, 'Error should be captured if migration failed'
             # Log the error type for documentation (don't silently pass)
             error_type = type(actual_error).__name__
             # Acceptable error types for empty DB scenarios
             acceptable_errors = [
                 'OperationalError',  # SQLite table not found
                 'ProgrammingError',  # SQLAlchemy errors
-                'CommandError',      # Alembic command errors
+                'CommandError',  # Alembic command errors
             ]
             assert error_type in acceptable_errors, (
-                f"Unexpected error type: {error_type}. "
-                f"This may indicate a regression in migration behavior. "
-                f"Error: {actual_error}"
+                f'Unexpected error type: {error_type}. '
+                f'This may indicate a regression in migration behavior. '
+                f'Error: {actual_error}'
             )
 
 
@@ -235,7 +235,7 @@ class TestSQLiteMigrationGetCurrent:
 
         # No stamp - should return None
         rev = await get_alembic_current(sqlite_engine)
-        assert rev is None, f"Expected None for unstamped DB, got {rev}"
+        assert rev is None, f'Expected None for unstamped DB, got {rev}'
 
     @pytest.mark.asyncio
     async def test_get_current_after_stamp_returns_revision(self, sqlite_engine):
@@ -248,4 +248,4 @@ class TestSQLiteMigrationGetCurrent:
         await run_alembic_stamp(sqlite_engine, '0001_baseline')
 
         rev = await get_alembic_current(sqlite_engine)
-        assert rev == '0001_baseline'
+        assert rev == '0001_baseline'

tests/integration/persistence/test_migrations_postgres.py

@@ -34,14 +34,14 @@ def postgres_url():
     """Get PostgreSQL URL from environment."""
     url = os.environ.get('TEST_POSTGRES_URL')
     if not url:
-        pytest.skip("TEST_POSTGRES_URL not set")
+        pytest.skip('TEST_POSTGRES_URL not set')
     return url
 
 
 @pytest.fixture
 async def postgres_engine(postgres_url):
     """Create async PostgreSQL engine."""
-    engine = create_async_engine(postgres_url, isolation_level="AUTOCOMMIT")
+    engine = create_async_engine(postgres_url, isolation_level='AUTOCOMMIT')
     yield engine
     await engine.dispose()
 
@@ -66,7 +66,7 @@ async def clean_alembic_version(postgres_engine):
     async with postgres_engine.begin() as conn:
         # Drop alembic_version table if exists
         try:
-            await conn.execute(text("DROP TABLE IF EXISTS alembic_version"))
+            await conn.execute(text('DROP TABLE IF EXISTS alembic_version'))
         except Exception:
             pass
 
@@ -74,7 +74,7 @@ async def clean_alembic_version(postgres_engine):
 
     async with postgres_engine.begin() as conn:
         try:
-            await conn.execute(text("DROP TABLE IF EXISTS alembic_version"))
+            await conn.execute(text('DROP TABLE IF EXISTS alembic_version'))
         except Exception:
             pass
 
@@ -83,9 +83,7 @@ class TestPostgreSQLMigrationBaseline:
     """Tests for baseline stamp workflow on PostgreSQL."""
 
     @pytest.mark.asyncio
-    async def test_postgres_baseline_stamp_sets_revision(
-        self, postgres_engine, clean_tables, clean_alembic_version
-    ):
+    async def test_postgres_baseline_stamp_sets_revision(self, postgres_engine, clean_tables, clean_alembic_version):
         """
         Stamp baseline on existing tables sets correct revision.
 
@@ -106,9 +104,7 @@ class TestPostgreSQLMigrationBaseline:
         assert rev == '0001_baseline', f"Expected '0001_baseline', got {rev}"
 
     @pytest.mark.asyncio
-    async def test_postgres_baseline_stamp_on_empty_db(
-        self, postgres_engine, clean_tables, clean_alembic_version
-    ):
+    async def test_postgres_baseline_stamp_on_empty_db(self, postgres_engine, clean_tables, clean_alembic_version):
         """
         Stamp on empty database (no tables) still sets revision.
 
@@ -125,9 +121,7 @@ class TestPostgreSQLMigrationUpgrade:
     """Tests for upgrade to head workflow on PostgreSQL."""
 
     @pytest.mark.asyncio
-    async def test_postgres_upgrade_from_baseline_to_head(
-        self, postgres_engine, clean_tables, clean_alembic_version
-    ):
+    async def test_postgres_upgrade_from_baseline_to_head(self, postgres_engine, clean_tables, clean_alembic_version):
         """
         Upgrade from baseline to head applies all migrations.
 
@@ -149,14 +143,12 @@ class TestPostgreSQLMigrationUpgrade:
 
         # Verify revision
         rev = await get_alembic_current(postgres_engine)
-        assert rev is not None, "Expected a revision after upgrade"
+        assert rev is not None, 'Expected a revision after upgrade'
         # Head should be the latest migration (0005 for current state)
-        assert rev.startswith('0005'), f"Expected head to be 0005_*, got {rev}"
+        assert rev.startswith('0005'), f'Expected head to be 0005_*, got {rev}'
 
     @pytest.mark.asyncio
-    async def test_postgres_upgrade_idempotent(
-        self, postgres_engine, clean_tables, clean_alembic_version
-    ):
+    async def test_postgres_upgrade_idempotent(self, postgres_engine, clean_tables, clean_alembic_version):
         """
         Running upgrade to head multiple times is idempotent.
 
@@ -180,7 +172,7 @@ class TestPostgreSQLMigrationUpgrade:
         await run_alembic_upgrade(postgres_engine, 'head')
 
         rev2 = await get_alembic_current(postgres_engine)
-        assert rev2 == rev1, f"Expected {rev1}, got {rev2}"
+        assert rev2 == rev1, f'Expected {rev1}, got {rev2}'
 
 
 class TestPostgreSQLMigrationGetCurrent:
@@ -199,7 +191,7 @@ class TestPostgreSQLMigrationGetCurrent:
 
         # No stamp - should return None
         rev = await get_alembic_current(postgres_engine)
-        assert rev is None, f"Expected None for unstamped DB, got {rev}"
+        assert rev is None, f'Expected None for unstamped DB, got {rev}'
 
     @pytest.mark.asyncio
     async def test_postgres_get_current_after_stamp_returns_revision(
@@ -214,4 +206,4 @@ class TestPostgreSQLMigrationGetCurrent:
         await run_alembic_stamp(postgres_engine, '0001_baseline')
 
         rev = await get_alembic_current(postgres_engine)
-        assert rev == '0001_baseline'
+        assert rev == '0001_baseline'

tests/integration/pipeline/__init__.py

@@ -2,4 +2,4 @@
 Pipeline integration tests package.
 
 Tests for full pipeline flow using fake provider/runner.
-"""
+"""

tests/integration/pipeline/test_full_flow.py

@@ -26,6 +26,7 @@ pytestmark = pytest.mark.integration
 
 # ============== FIXTURE FOR SYS.MODULES ISOLATION ==============
 
+
 @pytest.fixture(scope='module')
 def mock_circular_import_chain():
     """
@@ -103,6 +104,7 @@ def mock_circular_import_chain():
 
 # ============== FAKE RUNNER ==============
 
+
 class FakeRunner:
     """Minimal fake runner class for pipeline integration tests.
 
@@ -117,12 +119,13 @@ class FakeRunner:
         self.config = config or {}
         self._provider = FakeProvider()
         # Instance-level configuration set via class attribute
-        self._response_text = "fake response"
+        self._response_text = 'fake response'
         self._raise_error = None
 
     @classmethod
     def returns(cls, text: str):
         """Create a runner class configured to return specific text."""
+
         # We create a subclass with configured response
         class ConfiguredRunner(cls):
             name = cls.name
@@ -132,11 +135,13 @@ class FakeRunner:
             def __init__(self, app=None, config=None):
                 super().__init__(app, config)
                 self._response_text = text
+
         return ConfiguredRunner
 
     @classmethod
     def raises(cls, error: Exception):
         """Create a runner class configured to raise an error."""
+
         class ConfiguredRunner(cls):
             name = cls.name
             _response_text = None
@@ -145,6 +150,7 @@ class FakeRunner:
             def __init__(self, app=None, config=None):
                 super().__init__(app, config)
                 self._raise_error = error
+
         return ConfiguredRunner
 
     async def run(self, query):
@@ -161,6 +167,7 @@ class FakeRunner:
 
 # ============== PIPELINE APP FIXTURE ==============
 
+
 @pytest.fixture
 def pipeline_app():
     """
@@ -187,6 +194,7 @@ def pipeline_app():
         def __init__(self, name, messages):
             self.name = name
             self.messages = messages
+
         def copy(self):
             return MockPrompt(self.name, list(self.messages))
 
@@ -237,14 +245,17 @@ def fake_platform_adapter():
 @pytest.fixture
 def set_fake_runner():
     """Factory fixture to set a fake runner CLASS in preregistered_runners."""
+
     def _set_runner(runner_cls):
         # preregistered_runners expects a list of runner classes
         sys.modules['langbot.pkg.provider.runner'].preregistered_runners = [runner_cls]
+
     return _set_runner
 
 
 # ============== PIPELINE CONFIGURATION ==============
 
+
 def create_minimal_pipeline_config():
     """Create minimal pipeline configuration for tests."""
     return {
@@ -273,6 +284,7 @@ def create_minimal_pipeline_config():
 
 # ============== HELPER TO PROCESS COROUTINE/GENERATOR ==============
 
+
 async def collect_processor_results(processor, query, stage_name):
     """
     Helper to handle the coroutine -> async_generator pattern.
@@ -296,6 +308,7 @@ async def collect_processor_results(processor, query, stage_name):
 
 # ============== TESTS ==============
 
+
 @pytest.mark.usefixtures('mock_circular_import_chain')
 class TestPipelineStageChainReal:
     """Tests for real pipeline stage chain."""
@@ -337,7 +350,7 @@ class TestPreProcessorStage:
         adapter, platform = fake_platform_adapter
 
         # Create query with adapter
-        query = text_query("hello")
+        query = text_query('hello')
         query.adapter = adapter
         query.pipeline_config = create_minimal_pipeline_config()
 
@@ -365,7 +378,7 @@ class TestPreProcessorStage:
 
         adapter, platform = fake_platform_adapter
 
-        query = text_query("test message content")
+        query = text_query('test message content')
         query.adapter = adapter
         query.pipeline_config = create_minimal_pipeline_config()
 
@@ -396,11 +409,11 @@ class TestProcessorStage:
         adapter, platform = fake_platform_adapter
 
         # Set fake runner that returns pong
-        fake_runner = FakeRunner().returns("LANGBOT_FAKE_PONG")
+        fake_runner = FakeRunner().returns('LANGBOT_FAKE_PONG')
         set_fake_runner(fake_runner)
 
         # Create query
-        query = text_query("hello")
+        query = text_query('hello')
         query.adapter = adapter
         query.pipeline_config = create_minimal_pipeline_config()
         query.resp_messages = []
@@ -414,6 +427,7 @@ class TestProcessorStage:
 
         # Create Processor stage
         from langbot.pkg.pipeline.process import process
+
         processor_stage = process.Processor(pipeline_app)
         await processor_stage.initialize(query.pipeline_config)
 
@@ -432,7 +446,7 @@ class TestProcessorStage:
         adapter, platform = fake_platform_adapter
 
         # Create query
-        query = text_query("hello")
+        query = text_query('hello')
         query.adapter = adapter
         query.pipeline_config = create_minimal_pipeline_config()
 
@@ -445,6 +459,7 @@ class TestProcessorStage:
 
         # Create Processor stage
         from langbot.pkg.pipeline.process import process
+
         processor_stage = process.Processor(pipeline_app)
         await processor_stage.initialize(query.pipeline_config)
 
@@ -462,13 +477,13 @@ class TestProcessorStage:
         adapter, platform = fake_platform_adapter
 
         # Create query
-        query = text_query("hello")
+        query = text_query('hello')
         query.adapter = adapter
         query.pipeline_config = create_minimal_pipeline_config()
         query.resp_messages = []
 
         # Create reply chain
-        reply_chain = text_chain("plugin response")
+        reply_chain = text_chain('plugin response')
 
         # Mock plugin_connector to prevent default with reply
         mock_event_ctx = Mock()
@@ -479,6 +494,7 @@ class TestProcessorStage:
 
         # Create Processor stage
         from langbot.pkg.pipeline.process import process
+
         processor_stage = process.Processor(pipeline_app)
         await processor_stage.initialize(query.pipeline_config)
 
@@ -502,7 +518,7 @@ class TestRunnerExceptionFlow:
         adapter, platform = fake_platform_adapter
 
         # Set fake runner that raises exception
-        fake_runner = FakeRunner().raises(ValueError("API Error: rate limit exceeded"))
+        fake_runner = FakeRunner().raises(ValueError('API Error: rate limit exceeded'))
         set_fake_runner(fake_runner)
 
         # Create query with exception handling config
@@ -510,7 +526,7 @@ class TestRunnerExceptionFlow:
         config['output']['misc']['exception-handling'] = 'show-hint'
         config['output']['misc']['failure-hint'] = 'Request failed.'
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.adapter = adapter
         query.pipeline_config = config
 
@@ -523,6 +539,7 @@ class TestRunnerExceptionFlow:
 
         # Create Processor stage
         from langbot.pkg.pipeline.process import process
+
         processor_stage = process.Processor(pipeline_app)
         await processor_stage.initialize(query.pipeline_config)
 
@@ -541,14 +558,14 @@ class TestRunnerExceptionFlow:
         adapter, platform = fake_platform_adapter
 
         # Set fake runner that raises specific exception
-        fake_runner = FakeRunner().raises(RuntimeError("Custom runtime error"))
+        fake_runner = FakeRunner().raises(RuntimeError('Custom runtime error'))
         set_fake_runner(fake_runner)
 
         # Create query with show-error mode
         config = create_minimal_pipeline_config()
         config['output']['misc']['exception-handling'] = 'show-error'
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.adapter = adapter
         query.pipeline_config = config
 
@@ -561,6 +578,7 @@ class TestRunnerExceptionFlow:
 
         # Create Processor stage
         from langbot.pkg.pipeline.process import process
+
         processor_stage = process.Processor(pipeline_app)
         await processor_stage.initialize(query.pipeline_config)
 
@@ -578,14 +596,14 @@ class TestRunnerExceptionFlow:
         adapter, platform = fake_platform_adapter
 
         # Set fake runner that raises exception
-        fake_runner = FakeRunner().raises(Exception("Hidden error"))
+        fake_runner = FakeRunner().raises(Exception('Hidden error'))
         set_fake_runner(fake_runner)
 
         # Create query with hide mode
         config = create_minimal_pipeline_config()
         config['output']['misc']['exception-handling'] = 'hide'
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.adapter = adapter
         query.pipeline_config = config
 
@@ -598,6 +616,7 @@ class TestRunnerExceptionFlow:
 
         # Create Processor stage
         from langbot.pkg.pipeline.process import process
+
         processor_stage = process.Processor(pipeline_app)
         await processor_stage.initialize(query.pipeline_config)
 
@@ -623,7 +642,7 @@ class TestSendResponseBackStage:
         adapter, platform = fake_platform_adapter
 
         # Create query with response message
-        query = text_query("hello")
+        query = text_query('hello')
         query.adapter = adapter
         query.pipeline_config = create_minimal_pipeline_config()
 
@@ -666,12 +685,12 @@ class TestStageChainIntegration:
         adapter, platform = fake_platform_adapter
 
         # Set fake runner
-        fake_runner = FakeRunner().returns("LANGBOT_FAKE_PONG")
+        fake_runner = FakeRunner().returns('LANGBOT_FAKE_PONG')
         set_fake_runner(fake_runner)
 
         # Create query
         config = create_minimal_pipeline_config()
-        query = text_query("ping")
+        query = text_query('ping')
         query.adapter = adapter
         query.pipeline_config = config
         query.resp_messages = []
@@ -690,7 +709,7 @@ class TestStageChainIntegration:
 
         pipeline_app.plugin_connector.emit_event = AsyncMock()
         pipeline_app.plugin_connector.emit_event.side_effect = [
-            mock_event_ctx_preproc,   # PreProcessor PromptPreProcessing
+            mock_event_ctx_preproc,  # PreProcessor PromptPreProcessing
             mock_event_ctx_processor,  # Processor NormalMessageReceived
         ]
 
@@ -711,6 +730,7 @@ class TestStageChainIntegration:
 
         # Build resp_message_chain from resp_messages
         from tests.factories.message import text_chain
+
         for resp_msg in query.resp_messages:
             if resp_msg.content:
                 query.resp_message_chain.append(text_chain(resp_msg.content))
@@ -737,7 +757,7 @@ class TestStageChainIntegration:
         adapter, platform = fake_platform_adapter
 
         # Create query
-        query = text_query("hello")
+        query = text_query('hello')
         query.adapter = adapter
         query.pipeline_config = create_minimal_pipeline_config()
 
@@ -754,7 +774,7 @@ class TestStageChainIntegration:
 
         pipeline_app.plugin_connector.emit_event = AsyncMock()
         pipeline_app.plugin_connector.emit_event.side_effect = [
-            mock_event_ctx_preproc,   # PreProcessor PromptPreProcessing
+            mock_event_ctx_preproc,  # PreProcessor PromptPreProcessing
             mock_event_ctx_processor,  # Processor NormalMessageReceived
         ]
 
@@ -775,4 +795,4 @@ class TestStageChainIntegration:
         assert results[0].result_type == entities.ResultType.INTERRUPT
 
         # Chain stops here - no resp_messages
-        assert len(query.resp_messages) == 0
+        assert len(query.resp_messages) == 0

tests/smoke/__init__.py

@@ -3,4 +3,4 @@ Smoke tests package.
 
 Smoke tests verify basic functionality works without testing edge cases.
 Run with: uv run pytest tests/smoke/ -q
-"""
+"""

tests/smoke/test_fake_message_flow.py

@@ -39,19 +39,19 @@ class TestFakeMessageFlow:
         assert app.instance_config is not None
 
         # Verify default config
-        assert app.instance_config.data["command"]["prefix"] == ["/", "!"]
-        assert app.instance_config.data["command"]["enable"] is True
+        assert app.instance_config.data['command']['prefix'] == ['/', '!']
+        assert app.instance_config.data['command']['enable'] is True
 
     @pytest.mark.asyncio
     async def test_fake_provider_returns_text(self):
         """Test FakeProvider returns configured response."""
-        provider = FakeProvider(default_response="test response")
+        provider = FakeProvider(default_response='test response')
 
         # Create mock model with provider
         model = fake_model(provider=provider)
 
         # Create a simple query
-        query = text_query("hello")
+        query = text_query('hello')
 
         # Simulate invoke
         result = await provider.invoke_llm(
@@ -63,15 +63,15 @@ class TestFakeMessageFlow:
         )
 
         assert result is not None
-        assert result.role == "assistant"
-        assert result.content == "test response"
+        assert result.role == 'assistant'
+        assert result.content == 'test response'
 
     @pytest.mark.asyncio
     async def test_fake_provider_pong(self):
         """Test FakeProvider returns LANGBOT_FAKE_PONG marker."""
         provider = fake_provider_pong()
         model = fake_model(provider=provider)
-        query = text_query("ping")
+        query = text_query('ping')
 
         result = await provider.invoke_llm(
             query=query,
@@ -86,9 +86,9 @@ class TestFakeMessageFlow:
     @pytest.mark.asyncio
     async def test_fake_provider_streaming(self):
         """Test FakeProvider streaming response."""
-        provider = FakeProvider().returns_streaming(["Hello", " World"])
+        provider = FakeProvider().returns_streaming(['Hello', ' World'])
         model = fake_model(provider=provider)
-        query = text_query("hello")
+        query = text_query('hello')
 
         chunks = []
         # invoke_llm_stream returns an async generator, don't await it
@@ -102,8 +102,8 @@ class TestFakeMessageFlow:
             chunks.append(chunk)
 
         assert len(chunks) == 2
-        assert chunks[0].content == "Hello"
-        assert chunks[1].content == " World"
+        assert chunks[0].content == 'Hello'
+        assert chunks[1].content == ' World'
         assert chunks[1].is_final is True
 
     @pytest.mark.asyncio
@@ -111,9 +111,9 @@ class TestFakeMessageFlow:
         """Test FakeProvider simulates timeout error."""
         provider = FakeProvider().timeout()
         model = fake_model(provider=provider)
-        query = text_query("hello")
+        query = text_query('hello')
 
-        with pytest.raises(TimeoutError, match="Provider timeout"):
+        with pytest.raises(TimeoutError, match='Provider timeout'):
             await provider.invoke_llm(
                 query=query,
                 model=model,
@@ -127,9 +127,9 @@ class TestFakeMessageFlow:
         """Test FakeProvider simulates rate limit error."""
         provider = FakeProvider().rate_limit()
         model = fake_model(provider=provider)
-        query = text_query("hello")
+        query = text_query('hello')
 
-        with pytest.raises(Exception, match="Rate limit exceeded"):
+        with pytest.raises(Exception, match='Rate limit exceeded'):
             await provider.invoke_llm(
                 query=query,
                 model=model,
@@ -142,34 +142,34 @@ class TestFakeMessageFlow:
     async def test_fake_provider_captures_requests(self):
         """Test FakeProvider captures request arguments."""
         provider = FakeProvider()
-        model = fake_model(name="gpt-4", provider=provider)
-        query = text_query("hello")
+        model = fake_model(name='gpt-4', provider=provider)
+        query = text_query('hello')
 
         await provider.invoke_llm(
             query=query,
             model=model,
-            messages=[{"role": "user", "content": "hello"}],
-            funcs=[{"name": "test_func"}],
-            extra_args={"temperature": 0.7},
+            messages=[{'role': 'user', 'content': 'hello'}],
+            funcs=[{'name': 'test_func'}],
+            extra_args={'temperature': 0.7},
         )
 
         captured = provider.get_captured_requests()
         assert len(captured) == 1
-        assert captured[0]["model"] == "gpt-4"
-        assert captured[0]["messages"] == [{"role": "user", "content": "hello"}]
-        assert captured[0]["funcs"] == [{"name": "test_func"}]
-        assert captured[0]["extra_args"] == {"temperature": 0.7}
+        assert captured[0]['model'] == 'gpt-4'
+        assert captured[0]['messages'] == [{'role': 'user', 'content': 'hello'}]
+        assert captured[0]['funcs'] == [{'name': 'test_func'}]
+        assert captured[0]['extra_args'] == {'temperature': 0.7}
 
     @pytest.mark.asyncio
     async def test_fake_platform_capture_outbound(self):
         """Test FakePlatform captures outbound messages."""
-        platform = FakePlatform(bot_account_id="test-bot")
-        query = text_query("hello")
+        platform = FakePlatform(bot_account_id='test-bot')
+        query = text_query('hello')
 
         # Simulate sending reply
         from tests.factories.message import text_chain
 
-        reply_chain = text_chain("response text")
+        reply_chain = text_chain('response text')
         event = query.message_event
 
         await platform.reply_message(event, reply_chain, quote_origin=False)
@@ -177,38 +177,38 @@ class TestFakeMessageFlow:
         # Verify captured
         outbound = platform.get_outbound_messages()
         assert len(outbound) == 1
-        assert outbound[0]["type"] == "reply"
-        assert outbound[0]["message"] == reply_chain
+        assert outbound[0]['type'] == 'reply'
+        assert outbound[0]['message'] == reply_chain
 
     @pytest.mark.asyncio
     async def test_fake_platform_friend_message(self):
         """Test FakePlatform creates friend message events."""
-        platform = FakePlatform(bot_account_id="test-bot")
+        platform = FakePlatform(bot_account_id='test-bot')
 
         event = platform.create_friend_message(
-            text="hello bot",
+            text='hello bot',
             sender_id=12345,
-            nickname="TestUser",
+            nickname='TestUser',
         )
 
-        assert event.type == "FriendMessage"
+        assert event.type == 'FriendMessage'
         assert event.sender.id == 12345
-        assert event.sender.nickname == "TestUser"
-        assert str(event.message_chain) == "hello bot"
+        assert event.sender.nickname == 'TestUser'
+        assert str(event.message_chain) == 'hello bot'
 
     @pytest.mark.asyncio
     async def test_fake_platform_group_message_with_mention(self):
         """Test FakePlatform creates group message with @mention."""
-        platform = FakePlatform(bot_account_id="test-bot")
+        platform = FakePlatform(bot_account_id='test-bot')
 
         event = platform.create_group_message(
-            text="hello everyone",
+            text='hello everyone',
             sender_id=12345,
             group_id=99999,
             mention_bot=True,
         )
 
-        assert event.type == "GroupMessage"
+        assert event.type == 'GroupMessage'
         assert event.sender.id == 12345
         assert event.group.id == 99999
 
@@ -220,54 +220,57 @@ class TestFakeMessageFlow:
     async def test_query_factories_basic(self):
         """Test basic query factory functions."""
         # Text query
-        q1 = text_query("hello world")
-        assert q1.launcher_type.value == "person"
-        assert str(q1.message_chain) == "hello world"
+        q1 = text_query('hello world')
+        assert q1.launcher_type.value == 'person'
+        assert str(q1.message_chain) == 'hello world'
 
         # Group query
         from tests.factories import group_text_query
-        q2 = group_text_query("hello group", group_id=88888)
-        assert q2.launcher_type.value == "group"
+
+        q2 = group_text_query('hello group', group_id=88888)
+        assert q2.launcher_type.value == 'group'
         assert q2.launcher_id == 88888
 
         # Command query
         from tests.factories import command_query
-        q3 = command_query("help", prefix="/")
-        assert str(q3.message_chain) == "/help"
+
+        q3 = command_query('help', prefix='/')
+        assert str(q3.message_chain) == '/help'
 
         # Mention query
         from tests.factories import mention_query
-        q4 = mention_query("hi", target="test-bot", group_id=77777)
-        assert q4.launcher_type.value == "group"
+
+        q4 = mention_query('hi', target='test-bot', group_id=77777)
+        assert q4.launcher_type.value == 'group'
 
     @pytest.mark.asyncio
     async def test_fake_platform_send_failure(self):
         """Test FakePlatform simulates send failure."""
         platform = FakePlatform().send_failure()
-        query = text_query("hello")
+        query = text_query('hello')
 
         from tests.factories.message import text_chain
 
-        with pytest.raises(Exception, match="Platform send failure"):
+        with pytest.raises(Exception, match='Platform send failure'):
             await platform.reply_message(
                 query.message_event,
-                text_chain("response"),
+                text_chain('response'),
             )
 
     @pytest.mark.asyncio
     async def test_mock_platform_adapter(self):
         """Test mock_platform_adapter helper."""
-        platform = FakePlatform(bot_account_id="bot-123")
+        platform = FakePlatform(bot_account_id='bot-123')
         adapter = mock_platform_adapter(platform)
 
-        assert adapter.bot_account_id == "bot-123"
+        assert adapter.bot_account_id == 'bot-123'
         assert adapter._fake_platform is platform
 
         # Test reply_message is wired
         from tests.factories.message import text_chain
 
-        query = text_query("test")
-        await adapter.reply_message(query.message_event, text_chain("response"))
+        query = text_query('test')
+        await adapter.reply_message(query.message_event, text_chain('response'))
 
         # Verify platform captured it
         assert len(platform.get_outbound_messages()) == 1
@@ -293,18 +296,18 @@ class TestMessageFlowIntegration:
         Note: This does NOT run actual LangBot pipeline stages.
         """
         # Setup
-        platform = FakePlatform(bot_account_id="test-bot")
+        platform = FakePlatform(bot_account_id='test-bot')
         provider = fake_provider_pong()
         model = fake_model(provider=provider)
 
         # Create inbound message
-        query = text_query("ping")
+        query = text_query('ping')
 
         # Simulate provider processing
         response = await provider.invoke_llm(
             query=query,
             model=model,
-            messages=[{"role": "user", "content": "ping"}],
+            messages=[{'role': 'user', 'content': 'ping'}],
             funcs=[],
             extra_args={},
         )
@@ -321,16 +324,16 @@ class TestMessageFlowIntegration:
         # Verify platform captured outbound
         outbound = platform.get_outbound_messages()
         assert len(outbound) == 1
-        assert outbound[0]["type"] == "reply"
-        assert str(outbound[0]["message"]) == FakeProvider.PONG_RESPONSE
+        assert outbound[0]['type'] == 'reply'
+        assert str(outbound[0]['message']) == FakeProvider.PONG_RESPONSE
 
     @pytest.mark.asyncio
     async def test_streaming_message_flow(self):
         """Smoke test: streaming message flow."""
         platform = FakePlatform().supports_streaming()
-        provider = FakeProvider().returns_streaming(["Hello", " there"])
+        provider = FakeProvider().returns_streaming(['Hello', ' there'])
         model = fake_model(provider=provider)
-        query = text_query("hi")
+        query = text_query('hi')
 
         chunks = []
         async for chunk in provider.invoke_llm_stream(
@@ -344,8 +347,8 @@ class TestMessageFlowIntegration:
 
         # Verify streaming worked
         assert len(chunks) == 2
-        full_content = "".join(c.content for c in chunks)
-        assert full_content == "Hello there"
+        full_content = ''.join(c.content for c in chunks)
+        assert full_content == 'Hello there'
 
         # Verify platform supports streaming
-        assert await platform.is_stream_output_supported() is True
+        assert await platform.is_stream_output_supported() is True

tests/test_cwe94_debug_exec.py

@@ -15,22 +15,12 @@ import pathlib
 # Resolve project root (one level up from tests/)
 _PROJECT_ROOT = pathlib.Path(__file__).resolve().parent.parent
 
-VULN_FILE = (
-    _PROJECT_ROOT
-    / "src"
-    / "langbot"
-    / "pkg"
-    / "api"
-    / "http"
-    / "controller"
-    / "groups"
-    / "system.py"
-)
+VULN_FILE = _PROJECT_ROOT / 'src' / 'langbot' / 'pkg' / 'api' / 'http' / 'controller' / 'groups' / 'system.py'
 
 
 def test_no_exec_call_in_system_controller():
     """Verify there is no exec() call in system.py that takes user input."""
-    with open(VULN_FILE, "r") as f:
+    with open(VULN_FILE, 'r') as f:
         source = f.read()
 
     tree = ast.parse(source)
@@ -40,27 +30,26 @@ def test_no_exec_call_in_system_controller():
         if isinstance(node, ast.Call):
             func = node.func
             # Match bare exec() call
-            if isinstance(func, ast.Name) and func.id == "exec":
+            if isinstance(func, ast.Name) and func.id == 'exec':
                 exec_calls.append(node.lineno)
 
     assert len(exec_calls) == 0, (
-        f"Found exec() call(s) at line(s) {exec_calls} in system.py. "
-        "User-supplied code must never be passed to exec()."
+        f'Found exec() call(s) at line(s) {exec_calls} in system.py. User-supplied code must never be passed to exec().'
     )
 
 
 def test_no_debug_exec_route():
     """Verify the /debug/exec route is not registered."""
-    with open(VULN_FILE, "r") as f:
+    with open(VULN_FILE, 'r') as f:
         source = f.read()
 
-    assert "debug/exec" not in source, (
-        "The /debug/exec route still exists in system.py. "
-        "This endpoint allows arbitrary code execution and must be removed."
+    assert 'debug/exec' not in source, (
+        'The /debug/exec route still exists in system.py. '
+        'This endpoint allows arbitrary code execution and must be removed.'
     )
 
 
-if __name__ == "__main__":
+if __name__ == '__main__':
     test_no_exec_call_in_system_controller()
     test_no_debug_exec_route()
-    print("All tests passed!")
+    print('All tests passed!')

tests/unit_tests/api/__init__.py

@@ -1 +1 @@
-"""Unit tests for LangBot API HTTP service layer."""
+"""Unit tests for LangBot API HTTP service layer."""

tests/unit_tests/api/service/__init__.py

@@ -13,4 +13,4 @@ Does NOT:
 - Call real provider/platform/network
 
 Uses tests.factories.FakeApp as base mock application.
-"""
+"""

tests/unit_tests/api/service/test_apikey_service.py

@@ -132,9 +132,7 @@ class TestApiKeyServiceCreateApiKey:
         with patch('langbot.pkg.api.http.service.apikey.secrets.token_urlsafe', return_value='fixed-token'):
             result = await service.create_api_key('New Key', 'Test description')
 
-        assert insert_params == [
-            {'name': 'New Key', 'key': 'lbk_fixed-token', 'description': 'Test description'}
-        ]
+        assert insert_params == [{'name': 'New Key', 'key': 'lbk_fixed-token', 'description': 'Test description'}]
         assert result['key'].startswith('lbk_')
         assert result['key'] == 'lbk_fixed-token'
         assert result['name'] == 'New Key'

tests/unit_tests/api/service/test_bot_service.py

@@ -303,13 +303,7 @@ class TestBotServiceCreateBot:
         ap = SimpleNamespace()
         ap.persistence_mgr = SimpleNamespace()
         ap.instance_config = SimpleNamespace()
-        ap.instance_config.data = {
-            'system': {
-                'limitation': {
-                    'max_bots': 2
-                }
-            }
-        }
+        ap.instance_config.data = {'system': {'limitation': {'max_bots': 2}}}
         ap.platform_mgr = SimpleNamespace()
         ap.platform_mgr.load_bot = AsyncMock()
 
@@ -318,9 +312,7 @@ class TestBotServiceCreateBot:
         bot2 = _create_mock_bot(bot_uuid='uuid-2')
         mock_result = _create_mock_result([bot1, bot2])
         ap.persistence_mgr.execute_async = AsyncMock(return_value=mock_result)
-        ap.persistence_mgr.serialize_model = Mock(
-            return_value={'uuid': 'uuid-1', 'name': 'Bot 1'}
-        )
+        ap.persistence_mgr.serialize_model = Mock(return_value={'uuid': 'uuid-1', 'name': 'Bot 1'})
 
         service = BotService(ap)
 
@@ -352,6 +344,7 @@ class TestBotServiceCreateBot:
         bot_result.first = Mock(return_value=_create_mock_bot())
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -362,9 +355,7 @@ class TestBotServiceCreateBot:
             return bot_result  # Get bot
 
         ap.persistence_mgr.execute_async = AsyncMock(side_effect=mock_execute)
-        ap.persistence_mgr.serialize_model = Mock(
-            return_value={'uuid': 'new-uuid', 'name': 'New Bot'}
-        )
+        ap.persistence_mgr.serialize_model = Mock(return_value={'uuid': 'new-uuid', 'name': 'New Bot'})
 
         service = BotService(ap)
 
@@ -397,6 +388,7 @@ class TestBotServiceCreateBot:
         bot_result.first = Mock(return_value=_create_mock_bot())
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -492,6 +484,7 @@ class TestBotServiceUpdateBot:
         pipeline_result.first = Mock(return_value=mock_pipeline)
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -582,10 +575,9 @@ class TestBotServiceListEventLogs:
         # Mock runtime bot with logger
         runtime_bot = SimpleNamespace()
         runtime_bot.logger = SimpleNamespace()
-        runtime_bot.logger.get_logs = AsyncMock(return_value=(
-            [SimpleNamespace(to_json=Mock(return_value={'msg': 'log1'}))],
-            5
-        ))
+        runtime_bot.logger.get_logs = AsyncMock(
+            return_value=([SimpleNamespace(to_json=Mock(return_value={'msg': 'log1'}))], 5)
+        )
         ap.platform_mgr.get_bot_by_uuid = AsyncMock(return_value=runtime_bot)
 
         service = BotService(ap)
@@ -646,11 +638,7 @@ class TestBotServiceSendMessage:
         service = BotService(ap)
 
         # Execute with valid message chain format
-        message_chain_data = {
-            'messages': [
-                {'type': 'text', 'data': {'text': 'Hello'}}
-            ]
-        }
+        message_chain_data = {'messages': [{'type': 'text', 'data': {'text': 'Hello'}}]}
 
         # Patch the import location - the module imports inside the function
         with patch('langbot_plugin.api.entities.builtin.platform.message.MessageChain') as MockMessageChain:

tests/unit_tests/api/service/test_knowledge_service.py

@@ -6,6 +6,7 @@ Tests cover:
 - Knowledge engine discovery
 - File operations
 """
+
 from __future__ import annotations
 
 import pytest
@@ -52,9 +53,7 @@ class TestGetKnowledgeBases:
         """Test that it returns all knowledge base details."""
         knowledge_module = get_knowledge_service_module()
         mock_app = create_mock_app()
-        mock_app.rag_mgr.get_all_knowledge_base_details = AsyncMock(
-            return_value=[{'uuid': 'kb1', 'name': 'KB1'}]
-        )
+        mock_app.rag_mgr.get_all_knowledge_base_details = AsyncMock(return_value=[{'uuid': 'kb1', 'name': 'KB1'}])
 
         service = knowledge_module.KnowledgeService(mock_app)
         result = await service.get_knowledge_bases()
@@ -83,9 +82,7 @@ class TestGetKnowledgeBase:
         """Test that it returns specific KB details."""
         knowledge_module = get_knowledge_service_module()
         mock_app = create_mock_app()
-        mock_app.rag_mgr.get_knowledge_base_details = AsyncMock(
-            return_value={'uuid': 'kb1', 'name': 'KB1'}
-        )
+        mock_app.rag_mgr.get_knowledge_base_details = AsyncMock(return_value={'uuid': 'kb1', 'name': 'KB1'})
 
         service = knowledge_module.KnowledgeService(mock_app)
         result = await service.get_knowledge_base('kb1')
@@ -153,9 +150,7 @@ class TestCreateKnowledgeBase:
 
         service = knowledge_module.KnowledgeService(mock_app)
 
-        await service.create_knowledge_base({
-            'knowledge_engine_plugin_id': 'author/engine'
-        })
+        await service.create_knowledge_base({'knowledge_engine_plugin_id': 'author/engine'})
 
         # Check that default name 'Untitled' was used
         call_args = mock_app.rag_mgr.create_knowledge_base.call_args
@@ -170,20 +165,21 @@ class TestUpdateKnowledgeBase:
         """Test that only mutable fields are updated."""
         knowledge_module = get_knowledge_service_module()
         mock_app = create_mock_app()
-        mock_app.rag_mgr.get_knowledge_base_details = AsyncMock(
-            return_value={'uuid': 'kb1', 'name': 'Updated'}
-        )
+        mock_app.rag_mgr.get_knowledge_base_details = AsyncMock(return_value={'uuid': 'kb1', 'name': 'Updated'})
         mock_app.rag_mgr.remove_knowledge_base_from_runtime = AsyncMock()
         mock_app.rag_mgr.load_knowledge_base = AsyncMock()
 
         service = knowledge_module.KnowledgeService(mock_app)
 
         # Pass both mutable and immutable fields
-        await service.update_knowledge_base('kb1', {
-            'name': 'New Name',
-            'description': 'New desc',
-            'uuid': 'should_be_filtered',  # immutable
-        })
+        await service.update_knowledge_base(
+            'kb1',
+            {
+                'name': 'New Name',
+                'description': 'New desc',
+                'uuid': 'should_be_filtered',  # immutable
+            },
+        )
 
         # Check that only mutable fields were passed to update
         call_args = mock_app.persistence_mgr.execute_async.call_args
@@ -288,9 +284,7 @@ class TestListKnowledgeEngines:
         """Test that it returns empty list and logs warning on exception."""
         knowledge_module = get_knowledge_service_module()
         mock_app = create_mock_app()
-        mock_app.plugin_connector.list_knowledge_engines = AsyncMock(
-            side_effect=Exception('Connection error')
-        )
+        mock_app.plugin_connector.list_knowledge_engines = AsyncMock(side_effect=Exception('Connection error'))
 
         service = knowledge_module.KnowledgeService(mock_app)
         result = await service.list_knowledge_engines()
@@ -386,12 +380,10 @@ class TestGetEngineSchemas:
         """Test that it returns empty dict and logs warning on exception."""
         knowledge_module = get_knowledge_service_module()
         mock_app = create_mock_app()
-        mock_app.plugin_connector.get_rag_creation_schema = AsyncMock(
-            side_effect=Exception('Plugin error')
-        )
+        mock_app.plugin_connector.get_rag_creation_schema = AsyncMock(side_effect=Exception('Plugin error'))
 
         service = knowledge_module.KnowledgeService(mock_app)
         result = await service.get_engine_creation_schema('author/engine')
 
         assert result == {}
-        mock_app.logger.warning.assert_called_once()
+        mock_app.logger.warning.assert_called_once()

tests/unit_tests/api/service/test_maintenance_service.py

@@ -174,9 +174,7 @@ class TestMaintenanceServiceGetStorageAnalysis:
         # Setup
         ap = SimpleNamespace()
         ap.instance_config = SimpleNamespace()
-        ap.instance_config.data = {
-            'database': {'use': 'sqlite', 'sqlite': {'path': 'data/langbot.db'}}
-        }
+        ap.instance_config.data = {'database': {'use': 'sqlite', 'sqlite': {'path': 'data/langbot.db'}}}
         ap.persistence_mgr = SimpleNamespace()
         ap.logger = SimpleNamespace()
         ap.logger.warning = Mock()
@@ -292,12 +290,8 @@ class TestMaintenanceServiceGetStorageAnalysis:
         service._file_count = Mock(return_value=0)
         service._monitoring_counts = AsyncMock(return_value={})
         service._binary_storage_stats = AsyncMock(return_value={'count': 0, 'size_bytes': 0})
-        service._expired_uploaded_candidates = AsyncMock(return_value=[
-            {'key': 'old_file', 'size_bytes': 100}
-        ])
-        service._expired_log_candidates = Mock(return_value=[
-            {'name': 'old_log', 'size_bytes': 50}
-        ])
+        service._expired_uploaded_candidates = AsyncMock(return_value=[{'key': 'old_file', 'size_bytes': 100}])
+        service._expired_log_candidates = Mock(return_value=[{'name': 'old_log', 'size_bytes': 50}])
 
         # Execute
         result = await service.get_storage_analysis()
@@ -367,6 +361,7 @@ class TestMaintenanceServiceBinaryStorageStats:
         size_result = _create_mock_result(scalar_value=5000)
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -396,6 +391,7 @@ class TestMaintenanceServiceBinaryStorageStats:
         count_result = _create_mock_result(scalar_value=5)
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -821,4 +817,4 @@ class TestMaintenanceServiceExpiredLocalUploadCandidates:
                 result = service._expired_local_upload_candidates(7, include_paths=True)
 
         # Verify - path included
-        assert 'path' in result[0]
+        assert 'path' in result[0]

tests/unit_tests/api/service/test_mcp_service.py

@@ -186,13 +186,7 @@ class TestMCPServiceCreateMCPServer:
         ap = SimpleNamespace()
         ap.persistence_mgr = SimpleNamespace()
         ap.instance_config = SimpleNamespace()
-        ap.instance_config.data = {
-            'system': {
-                'limitation': {
-                    'max_extensions': 2
-                }
-            }
-        }
+        ap.instance_config.data = {'system': {'limitation': {'max_extensions': 2}}}
         ap.plugin_connector = SimpleNamespace()
         ap.plugin_connector.list_plugins = AsyncMock(return_value=[Mock(), Mock()])  # 2 plugins
 
@@ -252,6 +246,7 @@ class TestMCPServiceCreateMCPServer:
         server_entity = _create_mock_mcp_server(server_uuid='new-uuid', enable=True)
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -361,6 +356,7 @@ class TestMCPServiceUpdateMCPServer:
         old_server = _create_mock_mcp_server(name='Old Server', enable=True)
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -394,6 +390,7 @@ class TestMCPServiceUpdateMCPServer:
         updated_server = _create_mock_mcp_server(name='Old Server', enable=True)
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -432,6 +429,7 @@ class TestMCPServiceUpdateMCPServer:
 
         # Mock for: first select -> update -> second select (for updated server)
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -465,6 +463,7 @@ class TestMCPServiceUpdateMCPServer:
 
         # Mock execute for select and update
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -499,6 +498,7 @@ class TestMCPServiceDeleteMCPServer:
         server = _create_mock_mcp_server(name='Server to Delete')
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -530,6 +530,7 @@ class TestMCPServiceDeleteMCPServer:
         server = _create_mock_mcp_server(name='Not in Sessions')
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -559,6 +560,7 @@ class TestMCPServiceDeleteMCPServer:
 
         # No server found
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -596,9 +598,7 @@ class TestMCPServiceTestMCPServer:
         ap.tool_mgr.mcp_tool_loader.get_session = Mock(return_value=mock_session)
 
         ap.task_mgr = SimpleNamespace()
-        ap.task_mgr.create_user_task = Mock(
-            return_value=SimpleNamespace(id=123)
-        )
+        ap.task_mgr.create_user_task = Mock(return_value=SimpleNamespace(id=123))
 
         service = MCPService(ap)
 
@@ -634,9 +634,7 @@ class TestMCPServiceTestMCPServer:
         ap.tool_mgr.mcp_tool_loader.load_mcp_server = AsyncMock(return_value=mock_session)
 
         ap.task_mgr = SimpleNamespace()
-        ap.task_mgr.create_user_task = Mock(
-            return_value=SimpleNamespace(id=456)
-        )
+        ap.task_mgr.create_user_task = Mock(return_value=SimpleNamespace(id=456))
 
         service = MCPService(ap)
 
@@ -645,4 +643,4 @@ class TestMCPServiceTestMCPServer:
 
         # Verify - load_mcp_server called
         ap.tool_mgr.mcp_tool_loader.load_mcp_server.assert_called_once()
-        assert task_id == 456
+        assert task_id == 456

tests/unit_tests/api/service/test_model_service.py

@@ -167,6 +167,7 @@ class TestLLMModelsServiceGetLLMModels:
         mock_provider_result = _create_mock_result([])
 
         call_count = 0
+
         async def mock_execute(query):
             return mock_result if call_count == 0 else mock_provider_result
 
@@ -200,6 +201,7 @@ class TestLLMModelsServiceGetLLMModels:
         mock_provider_result = _create_mock_result([provider])
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -239,6 +241,7 @@ class TestLLMModelsServiceGetLLMModels:
         mock_provider_result = _create_mock_result([provider])
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -279,6 +282,7 @@ class TestLLMModelsServiceGetLLMModel:
         mock_provider_result = _create_mock_result([], first_item=provider)
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -337,9 +341,7 @@ class TestLLMModelsServiceGetLLMModelsByProvider:
 
         mock_result = _create_mock_result([model1, model2])
         ap.persistence_mgr.execute_async = AsyncMock(return_value=mock_result)
-        ap.persistence_mgr.serialize_model = Mock(
-            return_value={'uuid': 'model-1', 'name': 'Model 1'}
-        )
+        ap.persistence_mgr.serialize_model = Mock(return_value={'uuid': 'model-1', 'name': 'Model 1'})
 
         service = LLMModelsService(ap)
 
@@ -371,12 +373,14 @@ class TestLLMModelsServiceCreateLLMModel:
         service = LLMModelsService(ap)
 
         # Execute
-        model_uuid = await service.create_llm_model({
-            'name': 'New LLM',
-            'provider_uuid': 'provider-uuid',
-            'abilities': [],
-            'extra_args': {},
-        })
+        model_uuid = await service.create_llm_model(
+            {
+                'name': 'New LLM',
+                'provider_uuid': 'provider-uuid',
+                'abilities': [],
+                'extra_args': {},
+            }
+        )
 
         # Verify
         assert model_uuid is not None
@@ -400,13 +404,16 @@ class TestLLMModelsServiceCreateLLMModel:
         service = LLMModelsService(ap)
 
         # Execute
-        model_uuid = await service.create_llm_model({
-            'uuid': 'preserved-uuid',
-            'name': 'Preserved UUID Model',
-            'provider_uuid': 'provider-uuid',
-            'abilities': [],
-            'extra_args': {},
-        }, preserve_uuid=True)
+        model_uuid = await service.create_llm_model(
+            {
+                'uuid': 'preserved-uuid',
+                'name': 'Preserved UUID Model',
+                'provider_uuid': 'provider-uuid',
+                'abilities': [],
+                'extra_args': {},
+            },
+            preserve_uuid=True,
+        )
 
         # Verify
         assert model_uuid == 'preserved-uuid'
@@ -459,12 +466,14 @@ class TestLLMModelsServiceCreateLLMModel:
 
         # Execute & Verify
         with pytest.raises(Exception, match='provider not found'):
-            await service.create_llm_model({
-                'name': 'No Provider Model',
-                'provider_uuid': 'nonexistent-provider',
-                'abilities': [],
-                'extra_args': {},
-            })
+            await service.create_llm_model(
+                {
+                    'name': 'No Provider Model',
+                    'provider_uuid': 'nonexistent-provider',
+                    'abilities': [],
+                    'extra_args': {},
+                }
+            )
 
     async def test_create_llm_model_with_provider_data(self):
         """Creates provider when provider data provided."""
@@ -490,16 +499,18 @@ class TestLLMModelsServiceCreateLLMModel:
         service = LLMModelsService(ap)
 
         # Execute - with provider data (no UUID)
-        result_uuid = await service.create_llm_model({
-            'name': 'Model with New Provider',
-            'provider': {
-                'requester': 'openai',
-                'base_url': 'https://api.openai.com',
-                'api_keys': ['key'],
-            },
-            'abilities': [],
-            'extra_args': {},
-        })
+        result_uuid = await service.create_llm_model(
+            {
+                'name': 'Model with New Provider',
+                'provider': {
+                    'requester': 'openai',
+                    'base_url': 'https://api.openai.com',
+                    'api_keys': ['key'],
+                },
+                'abilities': [],
+                'extra_args': {},
+            }
+        )
 
         # Verify - provider_service was called and UUID generated
         ap.provider_service.find_or_create_provider.assert_called_once()
@@ -525,11 +536,14 @@ class TestLLMModelsServiceUpdateLLMModel:
         service = LLMModelsService(ap)
 
         # Execute
-        await service.update_llm_model('existing-uuid', {
-            'uuid': 'should-be-removed',
-            'name': 'Updated Name',
-            'provider_uuid': 'provider-uuid',
-        })
+        await service.update_llm_model(
+            'existing-uuid',
+            {
+                'uuid': 'should-be-removed',
+                'name': 'Updated Name',
+                'provider_uuid': 'provider-uuid',
+            },
+        )
 
         # Verify - remove and load called
         ap.model_mgr.remove_llm_model.assert_called_once_with('existing-uuid')
@@ -549,10 +563,13 @@ class TestLLMModelsServiceUpdateLLMModel:
 
         # Execute & Verify
         with pytest.raises(Exception, match='provider not found'):
-            await service.update_llm_model('model-uuid', {
-                'name': 'Update',
-                'provider_uuid': 'nonexistent-provider',
-            })
+            await service.update_llm_model(
+                'model-uuid',
+                {
+                    'name': 'Update',
+                    'provider_uuid': 'nonexistent-provider',
+                },
+            )
 
     async def test_update_llm_model_reloads_context_length_as_column(self):
         """Updates runtime model with context_length outside extra_args."""
@@ -618,9 +635,7 @@ class TestEmbeddingModelsServiceGetEmbeddingModels:
 
         mock_result = _create_mock_result([])
         ap.persistence_mgr.execute_async = AsyncMock(return_value=mock_result)
-        ap.persistence_mgr.serialize_model = Mock(
-            return_value={'uuid': 'embedding-uuid', 'name': 'Test'}
-        )
+        ap.persistence_mgr.serialize_model = Mock(return_value={'uuid': 'embedding-uuid', 'name': 'Test'})
 
         service = EmbeddingModelsService(ap)
 
@@ -643,6 +658,7 @@ class TestEmbeddingModelsServiceGetEmbeddingModels:
         mock_provider_result = _create_mock_result([provider])
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -683,6 +699,7 @@ class TestEmbeddingModelsServiceGetEmbeddingModel:
         mock_provider_result = _create_mock_result([], first_item=provider)
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -742,11 +759,13 @@ class TestEmbeddingModelsServiceCreateEmbeddingModel:
         service = EmbeddingModelsService(ap)
 
         # Execute
-        model_uuid = await service.create_embedding_model({
-            'name': 'New Embedding',
-            'provider_uuid': 'provider-uuid',
-            'extra_args': {},
-        })
+        model_uuid = await service.create_embedding_model(
+            {
+                'name': 'New Embedding',
+                'provider_uuid': 'provider-uuid',
+                'extra_args': {},
+            }
+        )
 
         # Verify
         assert model_uuid is not None
@@ -767,11 +786,13 @@ class TestEmbeddingModelsServiceCreateEmbeddingModel:
 
         # Execute & Verify
         with pytest.raises(Exception, match='provider not found'):
-            await service.create_embedding_model({
-                'name': 'No Provider Embedding',
-                'provider_uuid': 'nonexistent',
-                'extra_args': {},
-            })
+            await service.create_embedding_model(
+                {
+                    'name': 'No Provider Embedding',
+                    'provider_uuid': 'nonexistent',
+                    'extra_args': {},
+                }
+            )
 
 
 class TestEmbeddingModelsServiceDeleteEmbeddingModel:
@@ -829,6 +850,7 @@ class TestRerankModelsServiceGetRerankModels:
         mock_provider_result = _create_mock_result([provider])
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -869,6 +891,7 @@ class TestRerankModelsServiceGetRerankModel:
         mock_provider_result = _create_mock_result([], first_item=provider)
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -928,11 +951,13 @@ class TestRerankModelsServiceCreateRerankModel:
         service = RerankModelsService(ap)
 
         # Execute
-        model_uuid = await service.create_rerank_model({
-            'name': 'New Rerank',
-            'provider_uuid': 'provider-uuid',
-            'extra_args': {},
-        })
+        model_uuid = await service.create_rerank_model(
+            {
+                'name': 'New Rerank',
+                'provider_uuid': 'provider-uuid',
+                'extra_args': {},
+            }
+        )
 
         # Verify
         assert model_uuid is not None
@@ -952,11 +977,13 @@ class TestRerankModelsServiceCreateRerankModel:
 
         # Execute & Verify
         with pytest.raises(Exception, match='provider not found'):
-            await service.create_rerank_model({
-                'name': 'No Provider Rerank',
-                'provider_uuid': 'nonexistent',
-                'extra_args': {},
-            })
+            await service.create_rerank_model(
+                {
+                    'name': 'No Provider Rerank',
+                    'provider_uuid': 'nonexistent',
+                    'extra_args': {},
+                }
+            )
 
 
 class TestRerankModelsServiceDeleteRerankModel:
@@ -995,9 +1022,7 @@ class TestEmbeddingModelsServiceGetEmbeddingModelsByProvider:
 
         mock_result = _create_mock_result([model1, model2])
         ap.persistence_mgr.execute_async = AsyncMock(return_value=mock_result)
-        ap.persistence_mgr.serialize_model = Mock(
-            return_value={'uuid': 'emb-1', 'name': 'Embedding 1'}
-        )
+        ap.persistence_mgr.serialize_model = Mock(return_value={'uuid': 'emb-1', 'name': 'Embedding 1'})
 
         service = EmbeddingModelsService(ap)
 
@@ -1022,9 +1047,7 @@ class TestRerankModelsServiceGetRerankModelsByProvider:
 
         mock_result = _create_mock_result([model1, model2])
         ap.persistence_mgr.execute_async = AsyncMock(return_value=mock_result)
-        ap.persistence_mgr.serialize_model = Mock(
-            return_value={'uuid': 'rerank-1', 'name': 'Rerank 1'}
-        )
+        ap.persistence_mgr.serialize_model = Mock(return_value={'uuid': 'rerank-1', 'name': 'Rerank 1'})
 
         service = RerankModelsService(ap)
 
@@ -1042,14 +1065,10 @@ class TestValidateProviderSupports:
     def _make_ap(requester_name: str, support_type):
         """Build a fake ap whose model_mgr resolves a manifest with support_type."""
         manifest = SimpleNamespace(spec={'support_type': support_type})
-        runtime_provider = SimpleNamespace(
-            provider_entity=SimpleNamespace(requester=requester_name)
-        )
+        runtime_provider = SimpleNamespace(provider_entity=SimpleNamespace(requester=requester_name))
         model_mgr = SimpleNamespace(
             provider_dict={'p1': runtime_provider},
-            get_available_requester_manifest_by_name=lambda name: manifest
-            if name == requester_name
-            else None,
+            get_available_requester_manifest_by_name=lambda name: manifest if name == requester_name else None,
         )
         return SimpleNamespace(model_mgr=model_mgr)
 
@@ -1066,9 +1085,7 @@ class TestValidateProviderSupports:
     async def test_allows_when_support_type_missing(self):
         # Manifest without support_type must not block (backward compatible)
         manifest = SimpleNamespace(spec={})
-        runtime_provider = SimpleNamespace(
-            provider_entity=SimpleNamespace(requester='legacy')
-        )
+        runtime_provider = SimpleNamespace(provider_entity=SimpleNamespace(requester='legacy'))
         model_mgr = SimpleNamespace(
             provider_dict={'p1': runtime_provider},
             get_available_requester_manifest_by_name=lambda name: manifest,

tests/unit_tests/api/service/test_pipeline_service.py

@@ -215,13 +215,7 @@ class TestPipelineServiceCreatePipeline:
         ap = SimpleNamespace()
         ap.persistence_mgr = SimpleNamespace()
         ap.instance_config = SimpleNamespace()
-        ap.instance_config.data = {
-            'system': {
-                'limitation': {
-                    'max_pipelines': 2
-                }
-            }
-        }
+        ap.instance_config.data = {'system': {'limitation': {'max_pipelines': 2}}}
         ap.pipeline_mgr = SimpleNamespace()
         ap.pipeline_mgr.load_pipeline = AsyncMock()
         ap.ver_mgr = SimpleNamespace()
@@ -229,9 +223,7 @@ class TestPipelineServiceCreatePipeline:
 
         mock_result = _create_mock_result([_create_mock_pipeline(), _create_mock_pipeline()])
         ap.persistence_mgr.execute_async = AsyncMock(return_value=mock_result)
-        ap.persistence_mgr.serialize_model = Mock(
-            return_value={'uuid': 'uuid-1', 'name': 'Pipeline 1'}
-        )
+        ap.persistence_mgr.serialize_model = Mock(return_value={'uuid': 'uuid-1', 'name': 'Pipeline 1'})
 
         service = PipelineService(ap)
 
@@ -258,14 +250,14 @@ class TestPipelineServiceCreatePipeline:
 
         # Mock persistence for insert
         ap.persistence_mgr.execute_async = AsyncMock()
-        ap.persistence_mgr.serialize_model = Mock(
-            return_value={'uuid': 'new-uuid', 'name': 'New Pipeline'}
-        )
+        ap.persistence_mgr.serialize_model = Mock(return_value={'uuid': 'new-uuid', 'name': 'New Pipeline'})
 
         # Mock the file read for default config - patch at the utils module level
         default_config = {'trigger': {}, 'safety': {}, 'ai': {}, 'output': {}}
         with patch('builtins.open', mock_open(read_data=json.dumps(default_config))):
-            with patch('langbot.pkg.utils.paths.get_resource_path', return_value='templates/default-pipeline-config.json'):
+            with patch(
+                'langbot.pkg.utils.paths.get_resource_path', return_value='templates/default-pipeline-config.json'
+            ):
                 bot_uuid = await service.create_pipeline({'name': 'New Pipeline'})
 
         # Verify
@@ -286,7 +278,9 @@ class TestPipelineServiceCreatePipeline:
 
         service = PipelineService(ap)
         service.get_pipelines = AsyncMock(return_value=[])
-        service.get_pipeline = AsyncMock(return_value={'uuid': 'new-uuid', 'name': 'Default Pipeline', 'is_default': True})
+        service.get_pipeline = AsyncMock(
+            return_value={'uuid': 'new-uuid', 'name': 'Default Pipeline', 'is_default': True}
+        )
 
         ap.persistence_mgr.execute_async = AsyncMock()
         ap.persistence_mgr.serialize_model = Mock(
@@ -296,7 +290,9 @@ class TestPipelineServiceCreatePipeline:
         # Mock the file read
         default_config = {}
         with patch('builtins.open', mock_open(read_data=json.dumps(default_config))):
-            with patch('langbot.pkg.utils.paths.get_resource_path', return_value='templates/default-pipeline-config.json'):
+            with patch(
+                'langbot.pkg.utils.paths.get_resource_path', return_value='templates/default-pipeline-config.json'
+            ):
                 await service.create_pipeline({'name': 'Default Pipeline'}, default=True)
 
         # Verify - execute was called
@@ -316,10 +312,12 @@ class TestPipelineServiceCreatePipeline:
 
         service = PipelineService(ap)
         service.get_pipelines = AsyncMock(return_value=[])
-        service.get_pipeline = AsyncMock(return_value={
-            'uuid': 'new-uuid',
-            'extensions_preferences': {},
-        })
+        service.get_pipeline = AsyncMock(
+            return_value={
+                'uuid': 'new-uuid',
+                'extensions_preferences': {},
+            }
+        )
 
         insert_params = []
 
@@ -339,7 +337,9 @@ class TestPipelineServiceCreatePipeline:
 
         default_config = {}
         with patch('builtins.open', mock_open(read_data=json.dumps(default_config))):
-            with patch('langbot.pkg.utils.paths.get_resource_path', return_value='templates/default-pipeline-config.json'):
+            with patch(
+                'langbot.pkg.utils.paths.get_resource_path', return_value='templates/default-pipeline-config.json'
+            ):
                 await service.create_pipeline({'name': 'New Pipeline'})
 
         assert len(insert_params) == 1
@@ -353,6 +353,7 @@ class TestPipelineServiceCreatePipeline:
 
 class _MockResultWithBots:
     """Helper class to mock SQLAlchemy result with iterable .all() method."""
+
     def __init__(self, bots_list):
         self._bots_list = bots_list
 
@@ -428,6 +429,7 @@ class TestPipelineServiceUpdatePipeline:
         # 1. UPDATE (line 125) - returns Mock (no result needed)
         # 2. SELECT bots (line 136) - returns bot_result with .all()
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -528,13 +530,7 @@ class TestPipelineServiceCopyPipeline:
         ap = SimpleNamespace()
         ap.persistence_mgr = SimpleNamespace()
         ap.instance_config = SimpleNamespace()
-        ap.instance_config.data = {
-            'system': {
-                'limitation': {
-                    'max_pipelines': 2
-                }
-            }
-        }
+        ap.instance_config.data = {'system': {'limitation': {'max_pipelines': 2}}}
         ap.pipeline_mgr = SimpleNamespace()
         ap.pipeline_mgr.load_pipeline = AsyncMock()
         ap.ver_mgr = SimpleNamespace()
@@ -542,10 +538,12 @@ class TestPipelineServiceCopyPipeline:
 
         service = PipelineService(ap)
         # Mock get_pipelines to return 2 pipelines
-        service.get_pipelines = AsyncMock(return_value=[
-            {'uuid': 'uuid-1', 'name': 'Pipeline 1'},
-            {'uuid': 'uuid-2', 'name': 'Pipeline 2'},
-        ])
+        service.get_pipelines = AsyncMock(
+            return_value=[
+                {'uuid': 'uuid-1', 'name': 'Pipeline 1'},
+                {'uuid': 'uuid-2', 'name': 'Pipeline 2'},
+            ]
+        )
 
         # Execute & Verify
         with pytest.raises(ValueError, match='Maximum number of pipelines'):
@@ -642,9 +640,7 @@ class TestPipelineServiceCopyPipeline:
         service = PipelineService(ap)
         service.get_pipelines = AsyncMock(return_value=[])
         ap.persistence_mgr.execute_async = AsyncMock(return_value=_create_mock_result(first_item=original))
-        ap.persistence_mgr.serialize_model = Mock(
-            return_value={'uuid': 'copy-uuid', 'is_default': False}
-        )
+        ap.persistence_mgr.serialize_model = Mock(return_value={'uuid': 'copy-uuid', 'is_default': False})
 
         service.get_pipeline = AsyncMock(return_value={'uuid': 'copy-uuid', 'is_default': False})
 
@@ -681,11 +677,10 @@ class TestPipelineServiceUpdatePipelineExtensions:
         ap.pipeline_mgr.remove_pipeline = AsyncMock()
         ap.pipeline_mgr.load_pipeline = AsyncMock()
 
-        original_pipeline = _create_mock_pipeline(
-            extensions_preferences={'enable_all_plugins': True, 'plugins': []}
-        )
+        original_pipeline = _create_mock_pipeline(extensions_preferences={'enable_all_plugins': True, 'plugins': []})
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -700,7 +695,7 @@ class TestPipelineServiceUpdatePipelineExtensions:
                 'extensions_preferences': {
                     'enable_all_plugins': False,
                     'plugins': [{'plugin_uuid': 'plugin-1'}],
-                }
+                },
             }
         )
 
@@ -711,7 +706,7 @@ class TestPipelineServiceUpdatePipelineExtensions:
                 'extensions_preferences': {
                     'enable_all_plugins': False,
                     'plugins': [{'plugin_uuid': 'plugin-1'}],
-                }
+                },
             }
         )
 
@@ -738,6 +733,7 @@ class TestPipelineServiceUpdatePipelineExtensions:
         original_pipeline = _create_mock_pipeline()
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -752,7 +748,7 @@ class TestPipelineServiceUpdatePipelineExtensions:
                 'extensions_preferences': {
                     'enable_all_mcp_servers': False,
                     'mcp_servers': ['mcp-server-1'],
-                }
+                },
             }
         )
 
@@ -794,6 +790,7 @@ class TestPipelineServiceUpdatePipelineExtensions:
         )
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1

tests/unit_tests/api/service/test_provider_service.py

@@ -245,12 +245,14 @@ class TestModelProviderServiceCreateProvider:
         service = ModelProviderService(ap)
 
         # Execute
-        provider_uuid = await service.create_provider({
-            'name': 'New Provider',
-            'requester': 'openai',
-            'base_url': 'https://api.openai.com',
-            'api_keys': ['key'],
-        })
+        provider_uuid = await service.create_provider(
+            {
+                'name': 'New Provider',
+                'requester': 'openai',
+                'base_url': 'https://api.openai.com',
+                'api_keys': ['key'],
+            }
+        )
 
         # Verify - UUID is generated
         assert provider_uuid is not None
@@ -274,12 +276,14 @@ class TestModelProviderServiceCreateProvider:
         service = ModelProviderService(ap)
 
         # Execute
-        result_uuid = await service.create_provider({
-            'name': 'Runtime Provider',
-            'requester': 'openai',
-            'base_url': 'https://api.openai.com',
-            'api_keys': ['key'],
-        })
+        result_uuid = await service.create_provider(
+            {
+                'name': 'Runtime Provider',
+                'requester': 'openai',
+                'base_url': 'https://api.openai.com',
+                'api_keys': ['key'],
+            }
+        )
 
         # Verify - provider added to runtime dict and UUID generated
         ap.model_mgr.load_provider.assert_called_once()
@@ -302,10 +306,13 @@ class TestModelProviderServiceUpdateProvider:
         service = ModelProviderService(ap)
 
         # Execute
-        await service.update_provider('existing-uuid', {
-            'uuid': 'should-be-removed',  # Will be removed
-            'name': 'Updated Name',
-        })
+        await service.update_provider(
+            'existing-uuid',
+            {
+                'uuid': 'should-be-removed',  # Will be removed
+                'name': 'Updated Name',
+            },
+        )
 
         # Verify - reload called
         ap.model_mgr.reload_provider.assert_called_once_with('existing-uuid')
@@ -364,6 +371,7 @@ class TestModelProviderServiceDeleteProvider:
         rerank_result.first = Mock(return_value=None)
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -396,6 +404,7 @@ class TestModelProviderServiceDeleteProvider:
         rerank_result.first = Mock(return_value=Mock(spec=RerankModel))  # Has rerank model
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -454,6 +463,7 @@ class TestModelProviderServiceGetProviderModelCounts:
         rerank_result.scalar = Mock(return_value=1)
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -637,9 +647,7 @@ class TestModelProviderServiceUpdateSpaceModelProviderApiKeys:
         await service.update_space_model_provider_api_keys('space-api-key')
 
         # Verify - update and reload called for Space provider UUID
-        ap.model_mgr.reload_provider.assert_called_once_with(
-            '00000000-0000-0000-0000-000000000000'
-        )
+        ap.model_mgr.reload_provider.assert_called_once_with('00000000-0000-0000-0000-000000000000')
 
 
 class TestModelProviderServiceScanProviderModels:
@@ -795,9 +803,7 @@ class TestModelProviderServiceScanProviderModels:
         runtime_provider.token_mgr = Mock()
         runtime_provider.token_mgr.get_token = Mock(return_value='token')
         runtime_provider.token_mgr.tokens = ['token']
-        runtime_provider.requester.scan_models = AsyncMock(
-            side_effect=NotImplementedError('scan not supported')
-        )
+        runtime_provider.requester.scan_models = AsyncMock(side_effect=NotImplementedError('scan not supported'))
         ap.model_mgr.load_provider = AsyncMock(return_value=runtime_provider)
 
         service = ModelProviderService(ap)
@@ -848,9 +854,7 @@ class TestModelProviderServiceScanProviderModels:
         ap.model_mgr.load_provider = AsyncMock(return_value=runtime_provider)
 
         # Mock existing LLM model
-        ap.llm_model_service.get_llm_models_by_provider = AsyncMock(
-            return_value=[{'name': 'Existing Model'}]
-        )
+        ap.llm_model_service.get_llm_models_by_provider = AsyncMock(return_value=[{'name': 'Existing Model'}])
         ap.embedding_models_service.get_embedding_models_by_provider = AsyncMock(return_value=[])
 
         service = ModelProviderService(ap)
@@ -863,4 +867,4 @@ class TestModelProviderServiceScanProviderModels:
         assert existing_model['already_added'] is True
 
         new_model = next(m for m in result['models'] if m['name'] == 'New Model')
-        assert new_model['already_added'] is False
+        assert new_model['already_added'] is False

tests/unit_tests/api/service/test_space_service.py

@@ -393,14 +393,16 @@ class TestSpaceServiceRefreshToken:
         # Mock HTTP response
         mock_response = MagicMock()
         mock_response.status = 200
-        mock_response.json = AsyncMock(return_value={
-            'code': 0,
-            'data': {
-                'access_token': 'new_access_token',
-                'refresh_token': 'new_refresh_token',
-                'expires_in': 3600,
+        mock_response.json = AsyncMock(
+            return_value={
+                'code': 0,
+                'data': {
+                    'access_token': 'new_access_token',
+                    'refresh_token': 'new_refresh_token',
+                    'expires_in': 3600,
+                },
             }
-        })
+        )
 
         with patch('langbot.pkg.api.http.service.space.httpclient.get_session') as mock_session:
             mock_session_obj = MagicMock()
@@ -429,10 +431,12 @@ class TestSpaceServiceRefreshToken:
         # Mock HTTP response with error
         mock_response = MagicMock()
         mock_response.status = 200
-        mock_response.json = AsyncMock(return_value={
-            'code': 1,
-            'msg': 'Invalid refresh token',
-        })
+        mock_response.json = AsyncMock(
+            return_value={
+                'code': 1,
+                'msg': 'Invalid refresh token',
+            }
+        )
         mock_response.text = AsyncMock(return_value='{"code":1,"msg":"Invalid refresh token"}')
 
         with patch('langbot.pkg.api.http.service.space.httpclient.get_session') as mock_session:
@@ -489,14 +493,16 @@ class TestSpaceServiceExchangeOAuthCode:
         # Mock HTTP response
         mock_response = MagicMock()
         mock_response.status = 200
-        mock_response.json = AsyncMock(return_value={
-            'code': 0,
-            'data': {
-                'access_token': 'new_access_token',
-                'refresh_token': 'new_refresh_token',
-                'expires_in': 3600,
+        mock_response.json = AsyncMock(
+            return_value={
+                'code': 0,
+                'data': {
+                    'access_token': 'new_access_token',
+                    'refresh_token': 'new_refresh_token',
+                    'expires_in': 3600,
+                },
             }
-        })
+        )
 
         with patch('langbot.pkg.api.http.service.space.httpclient.get_session') as mock_session:
             mock_session_obj = MagicMock()
@@ -555,13 +561,15 @@ class TestSpaceServiceGetUserInfoRaw:
         # Mock HTTP response
         mock_response = MagicMock()
         mock_response.status = 200
-        mock_response.json = AsyncMock(return_value={
-            'code': 0,
-            'data': {
-                'email': 'test@example.com',
-                'credits': 100,
+        mock_response.json = AsyncMock(
+            return_value={
+                'code': 0,
+                'data': {
+                    'email': 'test@example.com',
+                    'credits': 100,
+                },
             }
-        })
+        )
 
         with patch('langbot.pkg.api.http.service.space.httpclient.get_session') as mock_session:
             mock_session_obj = MagicMock()
@@ -669,27 +677,29 @@ class TestSpaceServiceGetModels:
         # Mock HTTP response with proper model data matching SpaceModel schema
         mock_response = MagicMock()
         mock_response.status = 200
-        mock_response.json = AsyncMock(return_value={
-            'code': 0,
-            'data': {
-                'models': [
-                    {
-                        'uuid': 'uuid-1',
-                        'model_id': 'model-1',
-                        'provider': 'provider-1',
-                        'category': 'chat',
-                        'status': 'active',
-                    },
-                    {
-                        'uuid': 'uuid-2',
-                        'model_id': 'model-2',
-                        'provider': 'provider-2',
-                        'category': 'chat',
-                        'status': 'active',
-                    },
-                ]
+        mock_response.json = AsyncMock(
+            return_value={
+                'code': 0,
+                'data': {
+                    'models': [
+                        {
+                            'uuid': 'uuid-1',
+                            'model_id': 'model-1',
+                            'provider': 'provider-1',
+                            'category': 'chat',
+                            'status': 'active',
+                        },
+                        {
+                            'uuid': 'uuid-2',
+                            'model_id': 'model-2',
+                            'provider': 'provider-2',
+                            'category': 'chat',
+                            'status': 'active',
+                        },
+                    ]
+                },
             }
-        })
+        )
 
         with patch('langbot.pkg.api.http.service.space.httpclient.get_session') as mock_session:
             mock_session_obj = MagicMock()
@@ -775,4 +785,4 @@ class TestSpaceServiceCreditsCache:
         # Verify - cache updated
         assert result == 500
         assert 'test@example.com' in service._credits_cache
-        assert service._credits_cache['test@example.com'][0] == 500
+        assert service._credits_cache['test@example.com'][0] == 500

tests/unit_tests/api/service/test_user_service.py

@@ -495,6 +495,7 @@ class TestUserServiceCreateOrUpdateSpaceUser:
 
         # First call (line 138) returns None, second call (line 194) returns new_user
         call_count = 0
+
         async def mock_get_by_space_uuid(uuid):
             nonlocal call_count
             call_count += 1
@@ -565,6 +566,7 @@ class TestUserServiceCreateOrUpdateSpaceUser:
 
         # First call (line 138) returns None, second call (line 194) returns new_user
         call_count = 0
+
         async def mock_get_by_space_uuid(uuid):
             nonlocal call_count
             call_count += 1
@@ -605,4 +607,4 @@ class TestUserServiceCreateUserLock:
 
         # Verify lock exists
         assert hasattr(service, '_create_user_lock')
-        assert service._create_user_lock is not None
+        assert service._create_user_lock is not None

tests/unit_tests/api/service/test_webhook_service.py

@@ -132,6 +132,7 @@ class TestWebhookServiceCreateWebhook:
 
         # execute_async returns different results
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -181,6 +182,7 @@ class TestWebhookServiceCreateWebhook:
         )
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -217,6 +219,7 @@ class TestWebhookServiceCreateWebhook:
         created_webhook = _create_mock_webhook(webhook_id=1, enabled=False)
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -225,9 +228,7 @@ class TestWebhookServiceCreateWebhook:
             return _create_mock_result(first_item=created_webhook)
 
         ap.persistence_mgr.execute_async = AsyncMock(side_effect=mock_execute)
-        ap.persistence_mgr.serialize_model = Mock(
-            return_value={'id': 1, 'enabled': False}
-        )
+        ap.persistence_mgr.serialize_model = Mock(return_value={'id': 1, 'enabled': False})
 
         service = WebhookService(ap)
 
@@ -503,4 +504,4 @@ class TestWebhookServiceGetEnabledWebhooks:
         result = await service.get_enabled_webhooks()
 
         # Verify - should be empty (SQL would filter disabled)
-        assert result == []
+        assert result == []

tests/unit_tests/box/test_box_service.py

@@ -407,7 +407,9 @@ def test_box_service_forced_template_ignores_pipeline_config():
         launcher_type='person',
         launcher_id='test_user',
         sender_id='test_user',
-        pipeline_config={'ai': {'local-agent': {'box-session-id-template': '{launcher_type}_{launcher_id}_{sender_id}'}}},
+        pipeline_config={
+            'ai': {'local-agent': {'box-session-id-template': '{launcher_type}_{launcher_id}_{sender_id}'}}
+        },
     )
 
     assert service.resolve_box_session_id(query) == 'global'
@@ -1527,9 +1529,7 @@ class TestBuildSkillExtraMounts:
             {'host_path': '/box/skills/b', 'mount_path': '/workspace/.skills/b', 'mode': 'rw'},
         ]
         # No skill is dropped, so no "missing" warning should be logged.
-        assert not any(
-            'package_root missing' in str(call.args[0]) for call in logger.warning.call_args_list
-        )
+        assert not any('package_root missing' in str(call.args[0]) for call in logger.warning.call_args_list)
 
     def test_skips_skill_with_empty_package_root(self):
         logger = Mock()
@@ -1556,3 +1556,255 @@ class TestBuildSkillExtraMounts:
         service = BoxService(app, client=Mock(spec=BoxRuntimeClient))
 
         assert service.build_skill_extra_mounts(make_query()) == []
+
+
+# ── Attachment passthrough (inbound / outbound) ─────────────────────────────
+
+
+class TestAttachmentHelpers:
+    def test_sanitize_attachment_name_strips_traversal(self):
+        assert BoxService._sanitize_attachment_name('../../etc/passwd', 'fb') == 'passwd'
+        assert BoxService._sanitize_attachment_name('/a/b/c.png', 'fb') == 'c.png'
+        assert BoxService._sanitize_attachment_name('a b c.txt', 'fb') == 'a_b_c.txt'
+        assert BoxService._sanitize_attachment_name('', 'fallback.bin') == 'fallback.bin'
+        assert BoxService._sanitize_attachment_name('...', 'fb.bin') == 'fb.bin'
+        # weird unicode / shell chars dropped, but keeps a usable name
+        out = BoxService._sanitize_attachment_name('rm -rf $(x).png', 'fb')
+        assert '/' not in out and '$' not in out and out.endswith('.png')
+
+    def test_classify_outbound_entries_by_extension(self):
+        entries = [
+            {'name': 'chart.png', 'b64': 'AAA'},
+            {'name': 'clip.mp3', 'b64': 'BBB'},
+            {'name': 'report.pdf', 'b64': 'CCC'},
+            {'name': 'sub/dir/photo.JPG', 'b64': 'DDD'},
+            {'name': 'noext', 'b64': 'EEE'},
+            {'name': 'skip', 'b64': ''},  # dropped (no payload)
+        ]
+        out = BoxService._classify_outbound_entries(entries)
+        by_name = {a['name']: a for a in out}
+        assert by_name['chart.png']['type'] == 'Image'
+        assert by_name['chart.png']['base64'].startswith('data:image/png;base64,')
+        assert by_name['clip.mp3']['type'] == 'Voice'
+        assert by_name['clip.mp3']['base64'].startswith('data:audio/mp3;base64,')
+        assert by_name['report.pdf']['type'] == 'File'
+        assert by_name['report.pdf']['base64'] == 'CCC'  # raw b64, no data: prefix
+        # nested path collapses to basename, case-insensitive ext
+        assert by_name['photo.JPG']['type'] == 'Image'
+        assert by_name['noext']['type'] == 'File'
+        assert 'skip' not in by_name
+
+    @pytest.mark.asyncio
+    async def test_component_to_bytes_from_data_uri(self):
+        import base64
+
+        raw = b'hello-bytes'
+        data_uri = 'data:text/plain;base64,' + base64.b64encode(raw).decode()
+        component = SimpleNamespace(base64=data_uri, url=None, path=None)
+        result = await BoxService._component_to_bytes(component)
+        assert result is not None
+        data, mime = result
+        assert data == raw
+        assert mime == 'text/plain'
+
+    @pytest.mark.asyncio
+    async def test_component_to_bytes_returns_none_when_empty(self):
+        component = SimpleNamespace(base64=None, url=None, path=None)
+        assert await BoxService._component_to_bytes(component) is None
+
+
+class TestInboundOutboundRoundTrip:
+    def _service(self) -> BoxService:
+        service = BoxService(make_app(Mock()), client=Mock(spec=BoxRuntimeClient))
+        service._available = True
+        return service
+
+    @pytest.mark.asyncio
+    async def test_materialize_inbound_writes_and_describes(self):
+        import base64
+
+        import langbot_plugin.api.entities.builtin.platform.message as platform_message
+
+        service = self._service()
+
+        img_bytes = b'\x89PNG\r\n\x1a\n fake png'
+        img_b64 = 'data:image/png;base64,' + base64.b64encode(img_bytes).decode()
+
+        query = make_query()
+        query.message_chain = platform_message.MessageChain(
+            [
+                platform_message.Plain(text='please resize this'),
+                platform_message.Image(base64=img_b64),
+            ]
+        )
+
+        # Mock the sandbox write path: echo back the written paths.
+        async def fake_execute_tool(parameters, q):
+            assert '/workspace/inbox/' in parameters['command']
+            return {
+                'ok': True,
+                'stdout': '["/workspace/inbox/42/image_1.png"]',
+                'stderr': '',
+            }
+
+        service.execute_tool = AsyncMock(side_effect=fake_execute_tool)
+
+        descriptors = await service.materialize_inbound_attachments(query)
+        assert len(descriptors) == 1
+        d = descriptors[0]
+        assert d['type'] == 'Image'
+        assert d['path'] == '/workspace/inbox/42/image_1.png'
+        assert d['size'] == len(img_bytes)
+
+    @pytest.mark.asyncio
+    async def test_materialize_inbound_noop_without_attachments(self):
+        import langbot_plugin.api.entities.builtin.platform.message as platform_message
+
+        service = self._service()
+        query = make_query()
+        query.message_chain = platform_message.MessageChain([platform_message.Plain(text='just text')])
+        service.execute_tool = AsyncMock()
+        assert await service.materialize_inbound_attachments(query) == []
+        service.execute_tool.assert_not_called()
+
+    @pytest.mark.asyncio
+    async def test_collect_outbound_reads_and_clears(self):
+        service = self._service()
+        query = make_query()
+
+        calls = []
+
+        async def fake_execute_tool(parameters, q):
+            calls.append(parameters['command'])
+            if 'os.walk' in parameters['command']:
+                return {
+                    'ok': True,
+                    'stdout': '[{"name": "out.png", "b64": "QUJD"}]',
+                    'stderr': '',
+                }
+            # the rm -rf cleanup call
+            return {'ok': True, 'stdout': '', 'stderr': ''}
+
+        service.execute_tool = AsyncMock(side_effect=fake_execute_tool)
+
+        attachments = await service.collect_outbound_attachments(query)
+        assert len(attachments) == 1
+        assert attachments[0]['type'] == 'Image'
+        assert attachments[0]['name'] == 'out.png'
+        # cleanup (rm -rf) must have been issued after a successful collection
+        assert any('rm -rf' in c for c in calls)
+
+    @pytest.mark.asyncio
+    async def test_collect_outbound_empty_no_cleanup(self):
+        service = self._service()
+        query = make_query()
+
+        calls = []
+
+        async def fake_execute_tool(parameters, q):
+            calls.append(parameters['command'])
+            return {'ok': True, 'stdout': '[]', 'stderr': ''}
+
+        service.execute_tool = AsyncMock(side_effect=fake_execute_tool)
+        assert await service.collect_outbound_attachments(query) == []
+        assert not any('rm -rf' in c for c in calls)
+
+    @pytest.mark.asyncio
+    async def test_passthrough_noop_when_unavailable(self):
+        service = BoxService(make_app(Mock()), client=Mock(spec=BoxRuntimeClient))
+        service._available = False
+        query = make_query()
+        assert await service.materialize_inbound_attachments(query) == []
+        assert await service.collect_outbound_attachments(query) == []
+
+
+class TestAttachmentHostPath:
+    """Direct host-filesystem transfer path (bind-mounted workspace).
+
+    When ``default_workspace`` is a real local dir, inbound/outbound bypass the
+    exec channel entirely (no ARG_MAX / stdout-truncation limits) and read/write
+    the bind-mounted host dir directly.
+    """
+
+    def _service_with_workspace(self, tmp_path):
+        ws = str(tmp_path / 'box' / 'default')
+        os.makedirs(ws, exist_ok=True)
+        app = make_app(Mock(), allowed_mount_roots=[str(tmp_path)], host_root=str(tmp_path / 'box'))
+        service = BoxService(app, client=Mock(spec=BoxRuntimeClient))
+        service._available = True
+        # Force the default_workspace to our tmp dir so _host_query_dir resolves.
+        service.default_workspace = ws
+        return service, ws
+
+    @pytest.mark.asyncio
+    async def test_inbound_writes_to_host_no_exec(self, tmp_path):
+        import base64
+
+        import langbot_plugin.api.entities.builtin.platform.message as platform_message
+
+        service, ws = self._service_with_workspace(tmp_path)
+        # Big payload that would blow ARG_MAX on the exec path:
+        big = b'\x89PNG\r\n\x1a\n' + b'x' * (300 * 1024)
+        b64 = 'data:image/png;base64,' + base64.b64encode(big).decode()
+        query = make_query()
+        query.message_chain = platform_message.MessageChain([platform_message.Image(base64=b64)])
+        # execute_tool must NOT be called on the host path.
+        service.execute_tool = AsyncMock(side_effect=AssertionError('exec must not be used on host path'))
+
+        descriptors = await service.materialize_inbound_attachments(query)
+        assert len(descriptors) == 1
+        d = descriptors[0]
+        assert d['type'] == 'Image'
+        assert d['size'] == len(big)
+        # File actually landed on the host workspace.
+        host_file = os.path.join(ws, 'inbox', str(query.query_id), d['name'])
+        assert os.path.isfile(host_file)
+        assert open(host_file, 'rb').read() == big
+
+    @pytest.mark.asyncio
+    async def test_inbound_host_clears_stale_query_dir(self, tmp_path):
+        import base64
+
+        import langbot_plugin.api.entities.builtin.platform.message as platform_message
+
+        service, ws = self._service_with_workspace(tmp_path)
+        # Seed a stale file under the same query_id (simulates webchat id reuse).
+        stale_dir = os.path.join(ws, 'inbox', '42')
+        os.makedirs(stale_dir, exist_ok=True)
+        open(os.path.join(stale_dir, 'image_1.png'), 'wb').write(b'STALE-OLD-IMAGE')
+
+        new = b'\x89PNG\r\n\x1a\n NEW'
+        b64 = 'data:image/png;base64,' + base64.b64encode(new).decode()
+        query = make_query(query_id=42)
+        query.message_chain = platform_message.MessageChain([platform_message.Image(base64=b64)])
+        service.execute_tool = AsyncMock()
+        descriptors = await service.materialize_inbound_attachments(query)
+        # The new write recreated the dir; the stale file is gone, new bytes present.
+        host_file = os.path.join(stale_dir, descriptors[0]['name'])
+        assert open(host_file, 'rb').read() == new
+        # No leftover content from the stale image.
+        assert b'STALE-OLD-IMAGE' not in open(host_file, 'rb').read()
+
+    @pytest.mark.asyncio
+    async def test_outbound_reads_host_and_clears(self, tmp_path):
+        service, ws = self._service_with_workspace(tmp_path)
+        query = make_query()
+        outbox = os.path.join(ws, 'outbox', str(query.query_id))
+        os.makedirs(outbox, exist_ok=True)
+        # A large file that would be truncated on the exec/stdout path:
+        big_png = b'\x89PNG\r\n\x1a\n' + b'y' * (400 * 1024)
+        open(os.path.join(outbox, 'result.png'), 'wb').write(big_png)
+        open(os.path.join(outbox, 'notes.txt'), 'wb').write(b'hello')
+
+        service.execute_tool = AsyncMock(side_effect=AssertionError('exec must not be used on host path'))
+        attachments = await service.collect_outbound_attachments(query)
+        by_name = {a['name']: a for a in attachments}
+        assert by_name['result.png']['type'] == 'Image'
+        assert by_name['notes.txt']['type'] == 'File'
+        # Full image survived (no truncation).
+        import base64
+
+        raw = base64.b64decode(by_name['result.png']['base64'].split(',', 1)[-1])
+        assert raw == big_png
+        # Outbox cleared after collection.
+        assert os.listdir(outbox) == []

tests/unit_tests/command/__init__.py

@@ -1 +1 @@
-# Unit tests for command module
+# Unit tests for command module

tests/unit_tests/command/test_cmdmgr.py

@@ -529,4 +529,4 @@ class TestEmptyAndEdgeInputs:
 
         # Should yield CommandNotFoundError (no such command registered)
         assert len(results) == 1
-        assert results[0].error is not None
+        assert results[0].error is not None

tests/unit_tests/command/test_operator.py

@@ -197,6 +197,7 @@ class TestCommandOperatorBase:
         op = TestOperator(None)
         # Should not raise
         import asyncio
+
         asyncio.get_event_loop().run_until_complete(op.initialize())
 
     def test_execute_is_abstract(self):
@@ -299,4 +300,4 @@ class TestMultipleOperators:
                 yield None
 
         assert AdminOperator.lowest_privilege == 2
-        assert SubOperator.lowest_privilege == 1
+        assert SubOperator.lowest_privilege == 1

tests/unit_tests/config/test_config_loader.py

@@ -25,7 +25,7 @@ class TestYAMLConfigFile:
     @pytest.mark.asyncio
     async def test_valid_yaml_loads(self, tmp_path):
         """Valid YAML config should load correctly."""
-        config_file = tmp_path / "test_config.yaml"
+        config_file = tmp_path / 'test_config.yaml'
 
         # Write valid YAML
         config_file.write_text("""
@@ -51,7 +51,7 @@ settings:
     @pytest.mark.asyncio
     async def test_invalid_yaml_raises_error(self, tmp_path):
         """Invalid YAML should raise clear error."""
-        config_file = tmp_path / "invalid.yaml"
+        config_file = tmp_path / 'invalid.yaml'
 
         # Write invalid YAML (unclosed bracket)
         config_file.write_text("""
@@ -67,13 +67,13 @@ settings:
             template_data={'name': 'default'},
         )
 
-        with pytest.raises(Exception, match="Syntax error"):
+        with pytest.raises(Exception, match='Syntax error'):
             await yaml_file.load(completion=False)
 
     @pytest.mark.asyncio
     async def test_missing_config_creates_from_template(self, tmp_path):
         """Missing config file should be created from template."""
-        config_file = tmp_path / "new_config.yaml"
+        config_file = tmp_path / 'new_config.yaml'
 
         # File doesn't exist yet
         assert not config_file.exists()
@@ -92,7 +92,7 @@ settings:
     @pytest.mark.asyncio
     async def test_template_completion(self, tmp_path):
         """Config should be completed with template defaults."""
-        config_file = tmp_path / "partial.yaml"
+        config_file = tmp_path / 'partial.yaml'
 
         # Write partial config missing some template keys
         config_file.write_text("""
@@ -115,7 +115,7 @@ name: custom_name
     @pytest.mark.asyncio
     async def test_yaml_save(self, tmp_path):
         """YAML config can be saved."""
-        config_file = tmp_path / "save_test.yaml"
+        config_file = tmp_path / 'save_test.yaml'
 
         yaml_file = YAMLConfigFile(
             str(config_file),
@@ -131,7 +131,7 @@ name: custom_name
 
     def test_yaml_save_sync(self, tmp_path):
         """YAML config can be saved synchronously."""
-        config_file = tmp_path / "sync_save.yaml"
+        config_file = tmp_path / 'sync_save.yaml'
 
         yaml_file = YAMLConfigFile(
             str(config_file),
@@ -151,14 +151,18 @@ class TestJSONConfigFile:
     @pytest.mark.asyncio
     async def test_valid_json_loads(self, tmp_path):
         """Valid JSON config should load correctly."""
-        config_file = tmp_path / "test_config.json"
+        config_file = tmp_path / 'test_config.json'
 
         # Write valid JSON
-        config_file.write_text(json.dumps({
-            'name': 'json_app',
-            'version': '1.0',
-            'settings': {'debug': True, 'port': 8080},
-        }))
+        config_file.write_text(
+            json.dumps(
+                {
+                    'name': 'json_app',
+                    'version': '1.0',
+                    'settings': {'debug': True, 'port': 8080},
+                }
+            )
+        )
 
         json_file = JSONConfigFile(
             str(config_file),
@@ -174,7 +178,7 @@ class TestJSONConfigFile:
     @pytest.mark.asyncio
     async def test_invalid_json_raises_error(self, tmp_path):
         """Invalid JSON should raise clear error."""
-        config_file = tmp_path / "invalid.json"
+        config_file = tmp_path / 'invalid.json'
 
         # Write invalid JSON (missing closing brace)
         config_file.write_text('{"name": "test", "unclosed": ')
@@ -184,13 +188,13 @@ class TestJSONConfigFile:
             template_data={'name': 'default'},
         )
 
-        with pytest.raises(Exception, match="Syntax error"):
+        with pytest.raises(Exception, match='Syntax error'):
             await json_file.load(completion=False)
 
     @pytest.mark.asyncio
     async def test_missing_json_creates_from_template(self, tmp_path):
         """Missing JSON file should be created from template."""
-        config_file = tmp_path / "new_config.json"
+        config_file = tmp_path / 'new_config.json'
 
         json_file = JSONConfigFile(
             str(config_file),
@@ -205,7 +209,7 @@ class TestJSONConfigFile:
     @pytest.mark.asyncio
     async def test_json_save(self, tmp_path):
         """JSON config can be saved."""
-        config_file = tmp_path / "save_test.json"
+        config_file = tmp_path / 'save_test.json'
 
         json_file = JSONConfigFile(
             str(config_file),
@@ -226,7 +230,7 @@ class TestConfigManager:
     @pytest.mark.asyncio
     async def test_config_manager_load(self, tmp_path):
         """ConfigManager loads config correctly."""
-        config_file = tmp_path / "manager_test.yaml"
+        config_file = tmp_path / 'manager_test.yaml'
         config_file.write_text('name: managed_app\nversion: "1.0"\n')
 
         yaml_file = YAMLConfigFile(
@@ -243,7 +247,7 @@ class TestConfigManager:
     @pytest.mark.asyncio
     async def test_config_manager_dump(self, tmp_path):
         """ConfigManager can dump config."""
-        config_file = tmp_path / "dump_test.yaml"
+        config_file = tmp_path / 'dump_test.yaml'
 
         yaml_file = YAMLConfigFile(
             str(config_file),
@@ -260,7 +264,7 @@ class TestConfigManager:
 
     def test_config_manager_dump_sync(self, tmp_path):
         """ConfigManager can dump config synchronously."""
-        config_file = tmp_path / "sync_dump.yaml"
+        config_file = tmp_path / 'sync_dump.yaml'
 
         yaml_file = YAMLConfigFile(
             str(config_file),
@@ -280,7 +284,7 @@ class TestConfigExists:
 
     def test_yaml_exists_true(self, tmp_path):
         """exists() returns True for existing file."""
-        config_file = tmp_path / "exists.yaml"
+        config_file = tmp_path / 'exists.yaml'
         config_file.write_text('name: test')
 
         yaml_file = YAMLConfigFile(str(config_file), template_data={})
@@ -288,14 +292,14 @@ class TestConfigExists:
 
     def test_yaml_exists_false(self, tmp_path):
         """exists() returns False for missing file."""
-        config_file = tmp_path / "missing.yaml"
+        config_file = tmp_path / 'missing.yaml'
 
         yaml_file = YAMLConfigFile(str(config_file), template_data={})
         assert yaml_file.exists() is False
 
     def test_json_exists_true(self, tmp_path):
         """exists() returns True for existing JSON file."""
-        config_file = tmp_path / "exists.json"
+        config_file = tmp_path / 'exists.json'
         config_file.write_text('{}')
 
         json_file = JSONConfigFile(str(config_file), template_data={})
@@ -303,7 +307,7 @@ class TestConfigExists:
 
     def test_json_exists_false(self, tmp_path):
         """exists() returns False for missing JSON file."""
-        config_file = tmp_path / "missing.json"
+        config_file = tmp_path / 'missing.json'
 
         json_file = JSONConfigFile(str(config_file), template_data={})
-        assert json_file.exists() is False
+        assert json_file.exists() is False

tests/unit_tests/core/__init__.py

@@ -1 +1 @@
-"""Core module unit tests."""
+"""Core module unit tests."""

tests/unit_tests/core/test_app_config_validation.py

@@ -4,6 +4,7 @@ Tests cover:
 - _get_positive_int_config() validation
 - _get_positive_float_config() validation
 """
+
 from __future__ import annotations
 
 from unittest.mock import Mock
@@ -188,4 +189,4 @@ class TestGetPositiveFloatConfig:
         result = app._get_positive_float_config('not-a-number', default=1.5, name='test.config')
 
         assert result == 1.5
-        mock_logger.warning.assert_called_once()
+        mock_logger.warning.assert_called_once()

tests/unit_tests/core/test_bootutils_deps.py

@@ -27,6 +27,7 @@ class TestCheckDeps:
                 from langbot.pkg.core.bootutils.deps import check_deps
 
                 import asyncio
+
                 result = asyncio.get_event_loop().run_until_complete(check_deps())
 
                 assert result == []
@@ -46,6 +47,7 @@ class TestCheckDeps:
                 from langbot.pkg.core.bootutils.deps import check_deps
 
                 import asyncio
+
                 result = asyncio.get_event_loop().run_until_complete(check_deps())
 
                 assert 'requests' in result
@@ -61,6 +63,7 @@ class TestCheckDeps:
                 from langbot.pkg.core.bootutils.deps import check_deps, required_deps
 
                 import asyncio
+
                 result = asyncio.get_event_loop().run_until_complete(check_deps())
 
                 # Should include all required_deps keys
@@ -107,6 +110,7 @@ class TestPrecheckPluginDeps:
         with patch('os.path.exists', return_value=False):
             with patch('langbot.pkg.core.bootutils.deps.pkgmgr.install_requirements') as mock_install:
                 import asyncio
+
                 asyncio.get_event_loop().run_until_complete(precheck_plugin_deps())
 
                 mock_install.assert_not_called()
@@ -129,6 +133,7 @@ class TestPrecheckPluginDeps:
                 with patch('os.listdir', side_effect=mock_listdir):
                     with patch('langbot.pkg.core.bootutils.deps.pkgmgr.install_requirements') as mock_install:
                         import asyncio
+
                         asyncio.get_event_loop().run_until_complete(precheck_plugin_deps())
 
         mock_install.assert_called_once_with('plugins/plugin1/requirements.txt', extra_params=[])

tests/unit_tests/core/test_load_config.py

@@ -7,6 +7,7 @@ Tests cover:
 - Dict type skipping
 - Missing key creation
 """
+
 from __future__ import annotations
 
 import os
@@ -248,15 +249,8 @@ class TestApplyEnvOverridesToConfig:
         """Test multiple env vars applied in order."""
         load_config = get_load_config_module()
 
-        cfg = {
-            'system': {'name': 'default', 'enable': True},
-            'concurrency': {'pipeline': 5}
-        }
-        env = {
-            'SYSTEM__NAME': 'custom',
-            'SYSTEM__ENABLE': 'false',
-            'CONCURRENCY__PIPELINE': '10'
-        }
+        cfg = {'system': {'name': 'default', 'enable': True}, 'concurrency': {'pipeline': 5}}
+        env = {'SYSTEM__NAME': 'custom', 'SYSTEM__ENABLE': 'false', 'CONCURRENCY__PIPELINE': '10'}
 
         with patch.dict(os.environ, env, clear=True):
             result = load_config._apply_env_overrides_to_config(cfg)
@@ -287,4 +281,4 @@ class TestApplyEnvOverridesToConfig:
         with patch.dict(os.environ, env, clear=True):
             result = load_config._apply_env_overrides_to_config(cfg)
 
-        assert result['api']['extra_webhook_prefix'] == 'https://extra.example.com'
+        assert result['api']['extra_webhook_prefix'] == 'https://extra.example.com'

tests/unit_tests/core/test_stage.py

@@ -175,4 +175,4 @@ class TestPreregisteredStages:
                 pass
 
             for key in preregistered_stages:
-                assert isinstance(key, str)
+                assert isinstance(key, str)

tests/unit_tests/core/test_taskmgr.py

@@ -7,6 +7,7 @@ Tests cover:
 
 Note: Uses import_isolation to break circular import chains.
 """
+
 from __future__ import annotations
 
 import pytest
@@ -19,15 +20,17 @@ from typing import Generator
 
 class MockLifecycleControlScopeEnum:
     """Mock enum value for LifecycleControlScope with .value attribute."""
+
     def __init__(self, value: str):
         self.value = value
 
     def __repr__(self):
-        return f"LifecycleControlScope.{self.value.upper()}"
+        return f'LifecycleControlScope.{self.value.upper()}'
 
 
 class MockLifecycleControlScope:
     """Mock enum for LifecycleControlScope."""
+
     APPLICATION = MockLifecycleControlScopeEnum('application')
     PLATFORM = MockLifecycleControlScopeEnum('platform')
     PIPELINE = MockLifecycleControlScopeEnum('pipeline')
@@ -40,17 +43,17 @@ def isolated_taskmgr_import() -> Generator[None, None, None]:
     # Mock modules that cause circular imports
     mock_entities = MagicMock()
     mock_entities.LifecycleControlScope = MockLifecycleControlScope
-    
+
     mock_app = MagicMock()
-    
+
     mock_importutil = MagicMock()
     mock_importutil.import_modules_in_pkg = lambda pkg: None
     mock_importutil.import_modules_in_pkgs = lambda pkgs: None
-    
+
     mock_http_controller = MagicMock()
-    
+
     mock_rag_mgr = MagicMock()
-    
+
     mocks = {
         'langbot.pkg.core.entities': mock_entities,
         'langbot.pkg.core.app': mock_app,
@@ -58,26 +61,26 @@ def isolated_taskmgr_import() -> Generator[None, None, None]:
         'langbot.pkg.rag.knowledge.kbmgr': mock_rag_mgr,
         'langbot.pkg.utils.importutil': mock_importutil,
     }
-    
+
     # Save original state
     saved = {}
     for name in mocks:
         if name in sys.modules:
             saved[name] = sys.modules[name]
-    
+
     # Clear taskmgr to force re-import
     taskmgr_name = 'langbot.pkg.core.taskmgr'
     if taskmgr_name in sys.modules:
         saved[taskmgr_name] = sys.modules[taskmgr_name]
-    
+
     try:
         # Apply mocks
         for name, module in mocks.items():
             sys.modules[name] = module
-        
+
         # Clear taskmgr
         sys.modules.pop(taskmgr_name, None)
-        
+
         yield
     finally:
         # Restore
@@ -86,7 +89,7 @@ def isolated_taskmgr_import() -> Generator[None, None, None]:
                 sys.modules[name] = saved[name]
             else:
                 sys.modules.pop(name, None)
-        
+
         if taskmgr_name in saved:
             sys.modules[taskmgr_name] = saved[taskmgr_name]
         else:
@@ -97,6 +100,7 @@ def get_taskmgr_classes():
     """Get TaskContext, TaskWrapper, AsyncTaskManager classes."""
     with isolated_taskmgr_import():
         from langbot.pkg.core.taskmgr import TaskContext, TaskWrapper, AsyncTaskManager
+
         return TaskContext, TaskWrapper, AsyncTaskManager
 
 
@@ -194,9 +198,10 @@ class TestTaskContext:
         """Test TaskContext.placeholder() returns singleton."""
         with isolated_taskmgr_import():
             from langbot.pkg.core.taskmgr import TaskContext
-            
+
             # Reset global placeholder
             import langbot.pkg.core.taskmgr as taskmgr_module
+
             taskmgr_module.placeholder_context = None
 
             ctx1 = TaskContext.placeholder()
@@ -269,7 +274,8 @@ class TestTaskWrapper:
             return 'result'
 
         wrapper = TaskWrapper(
-            mock_app, immediate_coro(),
+            mock_app,
+            immediate_coro(),
             name='test_task',
             label='Test Task',
         )
@@ -414,7 +420,7 @@ class TestAsyncTaskManager:
     async def test_cancel_by_scope(self):
         """Test cancel_by_scope cancels matching tasks."""
         _, _, AsyncTaskManager = get_taskmgr_classes()
-        
+
         mock_app = create_mock_app()
         manager = AsyncTaskManager(mock_app)
 
@@ -422,16 +428,10 @@ class TestAsyncTaskManager:
             await asyncio.sleep(10)
 
         # Create task with APPLICATION scope
-        w1 = manager.create_task(
-            long_coro(),
-            scopes=[MockLifecycleControlScope.APPLICATION]
-        )
+        w1 = manager.create_task(long_coro(), scopes=[MockLifecycleControlScope.APPLICATION])
 
         # Create task with different scope
-        w2 = manager.create_task(
-            long_coro(),
-            scopes=[MockLifecycleControlScope.PIPELINE]
-        )
+        w2 = manager.create_task(long_coro(), scopes=[MockLifecycleControlScope.PIPELINE])
 
         manager.cancel_by_scope(MockLifecycleControlScope.APPLICATION)
 

tests/unit_tests/discover/test_engine.py

@@ -15,68 +15,68 @@ class TestI18nString:
 
     def test_create_with_english_only(self):
         """Create I18nString with only English."""
-        i18n = I18nString(en_US="Hello")
+        i18n = I18nString(en_US='Hello')
 
-        assert i18n.en_US == "Hello"
+        assert i18n.en_US == 'Hello'
         assert i18n.zh_Hans is None
 
     def test_create_with_multiple_languages(self):
         """Create I18nString with multiple languages."""
         i18n = I18nString(
-            en_US="Hello",
-            zh_Hans="你好",
-            zh_Hant="你好",
-            ja_JP="こんにちは",
+            en_US='Hello',
+            zh_Hans='你好',
+            zh_Hant='你好',
+            ja_JP='こんにちは',
         )
 
-        assert i18n.en_US == "Hello"
-        assert i18n.zh_Hans == "你好"
-        assert i18n.zh_Hant == "你好"
-        assert i18n.ja_JP == "こんにちは"
+        assert i18n.en_US == 'Hello'
+        assert i18n.zh_Hans == '你好'
+        assert i18n.zh_Hant == '你好'
+        assert i18n.ja_JP == 'こんにちは'
 
     def test_to_dict_with_english_only(self):
         """to_dict returns only non-None fields."""
-        i18n = I18nString(en_US="Hello")
+        i18n = I18nString(en_US='Hello')
 
         result = i18n.to_dict()
 
-        assert result == {"en_US": "Hello"}
+        assert result == {'en_US': 'Hello'}
 
     def test_to_dict_with_multiple_languages(self):
         """to_dict returns all non-None fields."""
         i18n = I18nString(
-            en_US="Hello",
-            zh_Hans="你好",
+            en_US='Hello',
+            zh_Hans='你好',
         )
 
         result = i18n.to_dict()
 
-        assert result == {"en_US": "Hello", "zh_Hans": "你好"}
+        assert result == {'en_US': 'Hello', 'zh_Hans': '你好'}
 
     def test_to_dict_excludes_none(self):
         """to_dict excludes None values."""
         i18n = I18nString(
-            en_US="Hello",
+            en_US='Hello',
             zh_Hans=None,
-            ja_JP="こんにちは",
+            ja_JP='こんにちは',
         )
 
         result = i18n.to_dict()
 
-        assert "zh_Hans" not in result
-        assert "en_US" in result
-        assert "ja_JP" in result
+        assert 'zh_Hans' not in result
+        assert 'en_US' in result
+        assert 'ja_JP' in result
 
     def test_to_dict_all_languages(self):
         """to_dict with all supported languages."""
         i18n = I18nString(
-            en_US="Hello",
-            zh_Hans="你好",
-            zh_Hant="你好",
-            ja_JP="こんにちは",
-            th_TH="สวัสดี",
-            vi_VN="Xin chào",
-            es_ES="Hola",
+            en_US='Hello',
+            zh_Hans='你好',
+            zh_Hant='你好',
+            ja_JP='こんにちは',
+            th_TH='สวัสดี',
+            vi_VN='Xin chào',
+            es_ES='Hola',
         )
 
         result = i18n.to_dict()
@@ -92,30 +92,30 @@ class TestMetadata:
         from langbot.pkg.discover.engine import I18nString
 
         metadata = Metadata(
-            name="test-component",
-            label=I18nString(en_US="Test Component"),
+            name='test-component',
+            label=I18nString(en_US='Test Component'),
         )
 
-        assert metadata.name == "test-component"
-        assert metadata.label.en_US == "Test Component"
+        assert metadata.name == 'test-component'
+        assert metadata.label.en_US == 'Test Component'
 
     def test_create_with_all_fields(self):
         """Create Metadata with all optional fields."""
         from langbot.pkg.discover.engine import I18nString
 
         metadata = Metadata(
-            name="test-component",
-            label=I18nString(en_US="Test"),
-            description=I18nString(en_US="A test component"),
-            version="1.0.0",
-            icon="test-icon",
-            author="Test Author",
-            repository="https://github.com/test/repo",
+            name='test-component',
+            label=I18nString(en_US='Test'),
+            description=I18nString(en_US='A test component'),
+            version='1.0.0',
+            icon='test-icon',
+            author='Test Author',
+            repository='https://github.com/test/repo',
         )
 
-        assert metadata.version == "1.0.0"
-        assert metadata.icon == "test-icon"
-        assert metadata.author == "Test Author"
+        assert metadata.version == '1.0.0'
+        assert metadata.icon == 'test-icon'
+        assert metadata.author == 'Test Author'
 
 
 class TestComponentManifest:

tests/unit_tests/persistence/test_database_decorator.py

@@ -7,6 +7,7 @@ Tests cover:
 
 Note: Uses import isolation to break circular import chains.
 """
+
 from __future__ import annotations
 
 import sys
@@ -86,6 +87,7 @@ def get_database_module():
     """Get database module with import isolation."""
     with isolated_database_import():
         from langbot.pkg.persistence import database
+
         return database
 
 
@@ -198,4 +200,4 @@ class TestManagerClassDecorator:
         # Create instance to test method (with mock app)
         mock_app = Mock()
         instance = ManagerWithMethods(mock_app)
-        assert instance.custom_method() == 'test_value'
+        assert instance.custom_method() == 'test_value'

tests/unit_tests/persistence/test_mgr_methods.py

@@ -4,6 +4,7 @@ Tests cover:
 - execute_async() with mock database
 - get_db_engine() with mock database manager
 """
+
 from __future__ import annotations
 
 import pytest
@@ -85,7 +86,7 @@ class TestExecuteAsync:
         mock_db.get_engine = Mock(return_value=mock_engine)
         mgr.db = mock_db
 
-        result = await mgr.execute_async(sqlalchemy.text("SELECT 1"))
+        result = await mgr.execute_async(sqlalchemy.text('SELECT 1'))
 
         # Verify result is the same object returned by execute
         assert result is mock_result
@@ -152,4 +153,4 @@ class TestSerializeModelEdgeCases:
         result = mgr.serialize_model(SimpleModel, instance, masked_columns=['id', 'name'])
 
         # Result should be empty dict when all columns masked
-        assert result == {}
+        assert result == {}

tests/unit_tests/persistence/test_serialize_model.py

@@ -5,6 +5,7 @@ Tests cover:
 - datetime conversion to isoformat
 - masked_columns exclusion
 """
+
 from __future__ import annotations
 
 import datetime

tests/unit_tests/pipeline/test_aggregator.py

@@ -49,7 +49,7 @@ class TestPendingMessage:
         """PendingMessage should be created with correct fields."""
         aggregator = get_aggregator_module()
 
-        chain = text_chain("hello")
+        chain = text_chain('hello')
         event = friend_message_event(chain)
         adapter = mock_adapter()
 
@@ -88,7 +88,7 @@ class TestSessionBuffer:
         """SessionBuffer should accept initial messages."""
         aggregator = get_aggregator_module()
 
-        chain = text_chain("hello")
+        chain = text_chain('hello')
         event = friend_message_event(chain)
         adapter = mock_adapter()
 
@@ -309,7 +309,7 @@ class TestMessageAggregatorAddMessage:
         app = make_aggregator_app()
         agg = aggregator.MessageAggregator(app)
 
-        chain = text_chain("hello")
+        chain = text_chain('hello')
         event = friend_message_event(chain)
         adapter = mock_adapter()
 
@@ -348,7 +348,7 @@ class TestMessageAggregatorAddMessage:
 
         agg = aggregator.MessageAggregator(app)
 
-        chain = text_chain("hello")
+        chain = text_chain('hello')
         event = friend_message_event(chain)
         adapter = mock_adapter()
 
@@ -387,7 +387,7 @@ class TestMessageAggregatorAddMessage:
 
         agg = aggregator.MessageAggregator(app)
 
-        chain = text_chain("hello")
+        chain = text_chain('hello')
         event = friend_message_event(chain)
         adapter = mock_adapter()
 
@@ -419,7 +419,7 @@ class TestMessageAggregatorMerge:
         app = make_aggregator_app()
         agg = aggregator.MessageAggregator(app)
 
-        chain = text_chain("hello")
+        chain = text_chain('hello')
         event = friend_message_event(chain)
         adapter = mock_adapter()
 
@@ -445,8 +445,8 @@ class TestMessageAggregatorMerge:
         app = make_aggregator_app()
         agg = aggregator.MessageAggregator(app)
 
-        chain1 = text_chain("hello")
-        chain2 = text_chain("world")
+        chain1 = text_chain('hello')
+        chain2 = text_chain('world')
         event = friend_message_event(chain1)
         adapter = mock_adapter()
 
@@ -476,8 +476,8 @@ class TestMessageAggregatorMerge:
 
         # Should contain both messages with separator
         merged_str = str(merged.message_chain)
-        assert "hello" in merged_str
-        assert "world" in merged_str
+        assert 'hello' in merged_str
+        assert 'world' in merged_str
 
     def test_merge_messages_preserves_routed_by_rule_if_any_input_matches(self):
         """Merged PendingMessage should keep routed_by_rule when any input was rule-routed."""
@@ -486,8 +486,8 @@ class TestMessageAggregatorMerge:
         app = make_aggregator_app()
         agg = aggregator.MessageAggregator(app)
 
-        chain1 = text_chain("first")
-        chain2 = text_chain("second")
+        chain1 = text_chain('first')
+        chain2 = text_chain('second')
         event = friend_message_event(chain1)
         adapter = mock_adapter()
 
@@ -545,7 +545,7 @@ class TestMessageAggregatorFlush:
         app = make_aggregator_app()
         agg = aggregator.MessageAggregator(app)
 
-        chain = text_chain("hello")
+        chain = text_chain('hello')
         event = friend_message_event(chain)
         adapter = mock_adapter()
 
@@ -597,7 +597,7 @@ class TestMessageAggregatorFlushAll:
         app = make_aggregator_app()
         agg = aggregator.MessageAggregator(app)
 
-        chain = text_chain("hello")
+        chain = text_chain('hello')
         event = friend_message_event(chain)
         adapter = mock_adapter()
 

tests/unit_tests/pipeline/test_chat_handler.py

@@ -15,6 +15,7 @@ from tests.factories import FakeApp
 
 # ============== FIXTURE USING IMPORT ISOLATION UTILITY ==============
 
+
 @pytest.fixture(scope='module')
 def mock_circular_import_chain():
     """
@@ -36,9 +37,11 @@ def mock_circular_import_chain():
     # Create a default runner that yields a simple response
     class DefaultRunner:
         name = 'local-agent'
+
         def __init__(self, app, config):
             self.app = app
             self.config = config
+
         async def run(self, query):
             yield Message(role='assistant', content='fake response')
 
@@ -70,9 +73,12 @@ def mock_event_ctx():
 @pytest.fixture
 def set_runner():
     """Factory fixture to set a custom runner for tests."""
+
     def _set_runner(runner_class):
         import sys
+
         sys.modules['langbot.pkg.provider.runner'].preregistered_runners = [runner_class]
+
     return _set_runner
 
 
@@ -87,6 +93,7 @@ def get_chat_handler():
     global _chat_handler_module
     if _chat_handler_module is None:
         from importlib import import_module
+
         _chat_handler_module = import_module('langbot.pkg.pipeline.process.handlers.chat')
     return _chat_handler_module
 
@@ -96,12 +103,14 @@ def get_entities():
     global _entities_module
     if _entities_module is None:
         from importlib import import_module
+
         _entities_module = import_module('langbot.pkg.pipeline.entities')
     return _entities_module
 
 
 # ============== REAL ChatMessageHandler Tests ==============
 
+
 @pytest.mark.usefixtures('mock_circular_import_chain')
 class TestChatMessageHandlerReal:
     """Tests for real ChatMessageHandler class."""
@@ -188,9 +197,11 @@ class TestChatMessageHandlerReal:
 
         class QuickRunner:
             name = 'local-agent'
+
             def __init__(self, app, config):
                 self.app = app
                 self.config = config
+
             async def run(self, query):
                 yield Message(role='assistant', content='ok')
 
@@ -222,9 +233,11 @@ class TestChatMessageHandlerReal:
 
         class SingleRunner:
             name = 'local-agent'
+
             def __init__(self, app, config):
                 self.app = app
                 self.config = config
+
             async def run(self, query):
                 yield Message(role='assistant', content='response')
 
@@ -262,9 +275,11 @@ class TestChatHandlerStreaming:
 
         class StreamRunner:
             name = 'local-agent'
+
             def __init__(self, app, config):
                 self.app = app
                 self.config = config
+
             async def run(self, query):
                 yield MessageChunk(role='assistant', content='Hello', is_final=False)
                 yield MessageChunk(role='assistant', content=' World', is_final=True)
@@ -303,14 +318,19 @@ class TestChatHandlerExceptions:
 
         query.pipeline_config = {
             'output': {'misc': {'exception-handling': 'show-hint', 'failure-hint': 'Request failed.'}},
-            'ai': {'runner': {'runner': 'local-agent'}, 'local-agent': {'prompt': 'default', 'model': {'primary': 'test'}}},
+            'ai': {
+                'runner': {'runner': 'local-agent'},
+                'local-agent': {'prompt': 'default', 'model': {'primary': 'test'}},
+            },
         }
 
         class FailingRunner:
             name = 'local-agent'
+
             def __init__(self, app, config):
                 self.app = app
                 self.config = config
+
             async def run(self, query):
                 raise ValueError('API error')
                 yield
@@ -346,14 +366,19 @@ class TestChatHandlerExceptions:
 
         query.pipeline_config = {
             'output': {'misc': {'exception-handling': 'show-error'}},
-            'ai': {'runner': {'runner': 'local-agent'}, 'local-agent': {'prompt': 'default', 'model': {'primary': 'test'}}},
+            'ai': {
+                'runner': {'runner': 'local-agent'},
+                'local-agent': {'prompt': 'default', 'model': {'primary': 'test'}},
+            },
         }
 
         class ErrorRunner:
             name = 'local-agent'
+
             def __init__(self, app, config):
                 self.app = app
                 self.config = config
+
             async def run(self, query):
                 raise ValueError('Custom error')
                 yield
@@ -386,14 +411,19 @@ class TestChatHandlerExceptions:
 
         query.pipeline_config = {
             'output': {'misc': {'exception-handling': 'hide'}},
-            'ai': {'runner': {'runner': 'local-agent'}, 'local-agent': {'prompt': 'default', 'model': {'primary': 'test'}}},
+            'ai': {
+                'runner': {'runner': 'local-agent'},
+                'local-agent': {'prompt': 'default', 'model': {'primary': 'test'}},
+            },
         }
 
         class HideErrorRunner:
             name = 'local-agent'
+
             def __init__(self, app, config):
                 self.app = app
                 self.config = config
+
             async def run(self, query):
                 raise RuntimeError('hidden')
                 yield
@@ -433,4 +463,4 @@ class TestChatHandlerHelper:
         chat = get_chat_handler()
         handler = chat.ChatMessageHandler(fake_app)
         result = handler.cut_str('first line\nsecond line')
-        assert '...' in result
+        assert '...' in result

tests/unit_tests/pipeline/test_cntfilter.py

@@ -67,7 +67,11 @@ def make_pipeline_config(**overrides):
     for key, value in overrides.items():
         if key in base_config and isinstance(base_config[key], dict) and isinstance(value, dict):
             for sub_key, sub_value in value.items():
-                if sub_key in base_config[key] and isinstance(base_config[key][sub_key], dict) and isinstance(sub_value, dict):
+                if (
+                    sub_key in base_config[key]
+                    and isinstance(base_config[key][sub_key], dict)
+                    and isinstance(sub_value, dict)
+                ):
                     base_config[key][sub_key].update(sub_value)
                 else:
                     base_config[key][sub_key] = sub_value
@@ -141,7 +145,7 @@ class TestPreContentFilter:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello world")
+        query = text_query('hello world')
         query.pipeline_config = pipeline_config
 
         result = await stage.process(query, 'PreContentFilterStage')
@@ -163,7 +167,7 @@ class TestPreContentFilter:
         await stage.initialize(pipeline_config)
 
         # Empty message chain
-        query = text_query("")
+        query = text_query('')
         query.message_chain = platform_message.MessageChain([])
         query.pipeline_config = pipeline_config
 
@@ -185,7 +189,7 @@ class TestPreContentFilter:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("   ")  # Only whitespace
+        query = text_query('   ')  # Only whitespace
         query.pipeline_config = pipeline_config
 
         result = await stage.process(query, 'PreContentFilterStage')
@@ -234,7 +238,7 @@ class TestPreContentFilter:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello world")
+        query = text_query('hello world')
         query.pipeline_config = pipeline_config
 
         result = await stage.process(query, 'PreContentFilterStage')
@@ -266,7 +270,7 @@ class TestContentIgnoreFilter:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("/help me")
+        query = text_query('/help me')
         query.pipeline_config = pipeline_config
 
         result = await stage.process(query, 'PreContentFilterStage')
@@ -294,7 +298,7 @@ class TestContentIgnoreFilter:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("http://example.com")
+        query = text_query('http://example.com')
         query.pipeline_config = pipeline_config
 
         result = await stage.process(query, 'PreContentFilterStage')
@@ -322,7 +326,7 @@ class TestContentIgnoreFilter:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("normal message")
+        query = text_query('normal message')
         query.pipeline_config = pipeline_config
 
         result = await stage.process(query, 'PreContentFilterStage')
@@ -343,7 +347,7 @@ class TestContentIgnoreFilter:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("/help me")
+        query = text_query('/help me')
         query.pipeline_config = pipeline_config
 
         result = await stage.process(query, 'PreContentFilterStage')
@@ -368,12 +372,10 @@ class TestPostContentFilter:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         # Add a response message
-        query.resp_messages = [
-            provider_message.Message(role='assistant', content='Hello back!')
-        ]
+        query.resp_messages = [provider_message.Message(role='assistant', content='Hello back!')]
 
         result = await stage.process(query, 'PostContentFilterStage')
 
@@ -398,11 +400,9 @@ class TestPostContentFilter:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
-        query.resp_messages = [
-            provider_message.Message(role='assistant', content='Response')
-        ]
+        query.resp_messages = [provider_message.Message(role='assistant', content='Response')]
 
         result = await stage.process(query, 'PostContentFilterStage')
 
@@ -422,7 +422,7 @@ class TestPostContentFilter:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         # Non-string content - use model_construct to bypass validation
         # The actual content type could be a list of ContentElement objects
@@ -450,11 +450,9 @@ class TestPostContentFilter:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
-        query.resp_messages = [
-            provider_message.Message(role='assistant', content='')
-        ]
+        query.resp_messages = [provider_message.Message(role='assistant', content='')]
 
         result = await stage.process(query, 'PostContentFilterStage')
 
@@ -476,7 +474,7 @@ class TestContentFilterStageInvalidName:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
 
         with pytest.raises(ValueError, match='未知的 stage_inst_name'):
@@ -506,7 +504,7 @@ class TestContentIgnoreFilterDirect:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("normal message without prefix")
+        query = text_query('normal message without prefix')
         query.pipeline_config = pipeline_config
 
         result = await stage.process(query, 'PreContentFilterStage')

tests/unit_tests/pipeline/test_command_handler.py

@@ -15,6 +15,7 @@ from tests.factories import FakeApp, command_query
 
 # ============== FIXTURE USING IMPORT ISOLATION UTILITY ==============
 
+
 @pytest.fixture(scope='module')
 def mock_circular_import_chain():
     """
@@ -56,6 +57,7 @@ def mock_event_ctx():
 @pytest.fixture
 def mock_execute_factory():
     """Factory fixture to create mock cmd_mgr.execute generators."""
+
     def _create_execute(
         text: str | None = 'ok',
         error: str | None = None,
@@ -71,7 +73,9 @@ def mock_execute_factory():
             ret.image_base64 = image_base64
             ret.file_url = file_url
             yield ret
+
         return mock_execute
+
     return _create_execute
 
 
@@ -86,6 +90,7 @@ def get_command_handler():
     global _command_handler_module
     if _command_handler_module is None:
         from importlib import import_module
+
         _command_handler_module = import_module('langbot.pkg.pipeline.process.handlers.command')
     return _command_handler_module
 
@@ -95,12 +100,14 @@ def get_entities():
     global _entities_module
     if _entities_module is None:
         from importlib import import_module
+
         _entities_module = import_module('langbot.pkg.pipeline.entities')
     return _entities_module
 
 
 # ============== REAL CommandHandler Tests ==============
 
+
 @pytest.mark.usefixtures('mock_circular_import_chain')
 class TestCommandHandlerReal:
     """Tests for real CommandHandler class."""
@@ -127,6 +134,7 @@ class TestCommandHandlerReal:
         fake_app.plugin_connector.emit_event = AsyncMock(return_value=mock_event_ctx)
 
         executed_commands = []
+
         async def track_execute(command_text, full_command_text, query, session):
             executed_commands.append(command_text)
             ret = Mock()
@@ -334,8 +342,7 @@ class TestCommandHandlerReal:
         command = get_command_handler()
         fake_app.plugin_connector.emit_event = AsyncMock(return_value=mock_event_ctx)
         fake_app.cmd_mgr.execute = mock_execute_factory(
-            text='Here is the image:',
-            image_url='https://example.com/image.png'
+            text='Here is the image:', image_url='https://example.com/image.png'
         )
 
         handler = command.CommandHandler(fake_app)
@@ -393,4 +400,4 @@ class TestCommandHandlerHelper:
         command = get_command_handler()
         handler = command.CommandHandler(fake_app)
         result = handler.cut_str('first line\nsecond line')
-        assert '...' in result
+        assert '...' in result

tests/unit_tests/pipeline/test_longtext.py

@@ -126,11 +126,9 @@ class TestLongTextProcessStageProcess:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
-        query.resp_message_chain = [
-            platform_message.MessageChain([platform_message.Plain(text="very long response")])
-        ]
+        query.resp_message_chain = [platform_message.MessageChain([platform_message.Plain(text='very long response')])]
 
         result = await stage.process(query, 'LongTextProcessStage')
 
@@ -151,11 +149,9 @@ class TestLongTextProcessStageProcess:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
-        query.resp_message_chain = [
-            platform_message.MessageChain([platform_message.Plain(text="short response")])
-        ]
+        query.resp_message_chain = [platform_message.MessageChain([platform_message.Plain(text='short response')])]
 
         result = await stage.process(query, 'LongTextProcessStage')
 
@@ -179,14 +175,13 @@ class TestLongTextProcessStageProcess:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         # Non-Plain component (Image)
         query.resp_message_chain = [
-            platform_message.MessageChain([
-                platform_message.Plain(text="short"),
-                platform_message.Image(url="https://example.com/img.png")
-            ])
+            platform_message.MessageChain(
+                [platform_message.Plain(text='short'), platform_message.Image(url='https://example.com/img.png')]
+            )
         ]
 
         result = await stage.process(query, 'LongTextProcessStage')
@@ -213,7 +208,7 @@ class TestLongTextProcessStageProcess:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         query.resp_message_chain = []
 
@@ -232,7 +227,7 @@ class TestLongTextProcessStageProcess:
         stage = longtext.LongTextProcessStage(app)
         stage.strategy_impl = AsyncMock()
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = make_longtext_config(strategy='forward', threshold=1)
         query.resp_message_chain = []
 
@@ -242,6 +237,7 @@ class TestLongTextProcessStageProcess:
         assert result.new_query is query
         stage.strategy_impl.process.assert_not_called()
 
+
 class TestForwardStrategy:
     """Tests for ForwardComponentStrategy."""
 
@@ -260,7 +256,7 @@ class TestForwardStrategy:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         # Create a mock adapter with bot_account_id
         mock_adapter = Mock()
@@ -268,10 +264,8 @@ class TestForwardStrategy:
         query.adapter = mock_adapter
 
         # Long text exceeding threshold
-        long_text = "This is a very long response that exceeds the threshold"
-        query.resp_message_chain = [
-            platform_message.MessageChain([platform_message.Plain(text=long_text)])
-        ]
+        long_text = 'This is a very long response that exceeds the threshold'
+        query.resp_message_chain = [platform_message.MessageChain([platform_message.Plain(text=long_text)])]
 
         result = await stage.process(query, 'LongTextProcessStage')
 
@@ -297,13 +291,13 @@ class TestForwardStrategy:
 
         await strat.initialize()
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = make_longtext_config()
         mock_adapter = Mock()
         mock_adapter.bot_account_id = '12345'
         query.adapter = mock_adapter
 
-        components = await strat.process("test message", query)
+        components = await strat.process('test message', query)
 
         assert len(components) == 1
         assert isinstance(components[0], platform_message.Forward)
@@ -326,14 +320,12 @@ class TestLongTextThreshold:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
 
         # Text below threshold
-        short_text = "x" * (threshold - 1)
-        query.resp_message_chain = [
-            platform_message.MessageChain([platform_message.Plain(text=short_text)])
-        ]
+        short_text = 'x' * (threshold - 1)
+        query.resp_message_chain = [platform_message.MessageChain([platform_message.Plain(text=short_text)])]
 
         result = await stage.process(query, 'LongTextProcessStage')
 

tests/unit_tests/pipeline/test_msgtrun.py

@@ -115,7 +115,7 @@ class TestRoundTruncatorProcess:
         await stage.initialize(pipeline_config)
 
         # Create query with 3 messages (within limit)
-        query = text_query("current message")
+        query = text_query('current message')
         query.pipeline_config = pipeline_config
         query.messages = [
             provider_message.Message(role='user', content='message 1'),
@@ -154,7 +154,7 @@ class TestRoundTruncatorProcess:
 
         # Create query with many messages exceeding limit
         # 7 messages = 3 full rounds + 1 current user
-        query = text_query("current message")
+        query = text_query('current message')
         query.pipeline_config = pipeline_config
         query.messages = [
             provider_message.Message(role='user', content='message 1'),
@@ -194,7 +194,7 @@ class TestRoundTruncatorProcess:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         query.messages = []
 
@@ -216,7 +216,7 @@ class TestRoundTruncatorProcess:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         query.messages = [
             provider_message.Message(role='user', content='hello'),
@@ -240,7 +240,7 @@ class TestRoundTruncatorProcess:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("current")
+        query = text_query('current')
         query.pipeline_config = pipeline_config
         query.messages = [
             provider_message.Message(role='user', content='user1'),
@@ -274,7 +274,7 @@ class TestRoundTruncatorProcess:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("current")
+        query = text_query('current')
         query.pipeline_config = pipeline_config
         query.messages = [
             provider_message.Message(role='user', content='old1'),
@@ -305,7 +305,7 @@ class TestRoundTruncatorDirect:
                 trun = trun_cls(app)
                 break
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = make_truncate_config(max_round=3)
         query.messages = [
             provider_message.Message(role='user', content='m1'),

tests/unit_tests/pipeline/test_preproc.py

@@ -78,7 +78,7 @@ class TestPreProcessorNormalText:
         app.plugin_connector.emit_event = AsyncMock(return_value=mock_event_ctx)
 
         stage = preproc.PreProcessor(app)
-        query = text_query("hello world")
+        query = text_query('hello world')
 
         result = await stage.process(query, 'PreProcessor')
 
@@ -113,7 +113,7 @@ class TestPreProcessorNormalText:
         app.plugin_connector.emit_event = AsyncMock(return_value=mock_event_ctx)
 
         stage = preproc.PreProcessor(app)
-        query = text_query("test message")
+        query = text_query('test message')
 
         result = await stage.process(query, 'PreProcessor')
 
@@ -194,13 +194,16 @@ class TestPreProcessorImageSegment:
 
         stage = preproc.PreProcessor(app)
         # Image query with base64
-        query = image_query(text="look at this", url=None)
+        query = image_query(text='look at this', url=None)
         # Set base64 on the image component
         import langbot_plugin.api.entities.builtin.platform.message as platform_message
-        chain = platform_message.MessageChain([
-            platform_message.Plain(text="look at this"),
-            platform_message.Image(base64="data:image/png;base64,abc123"),
-        ])
+
+        chain = platform_message.MessageChain(
+            [
+                platform_message.Plain(text='look at this'),
+                platform_message.Image(base64='data:image/png;base64,abc123'),
+            ]
+        )
         query.message_chain = chain
 
         result = await stage.process(query, 'PreProcessor')
@@ -238,7 +241,7 @@ class TestPreProcessorImageSegment:
         app.plugin_connector.emit_event = AsyncMock(return_value=mock_event_ctx)
 
         stage = preproc.PreProcessor(app)
-        query = image_query(text="describe this")
+        query = image_query(text='describe this')
 
         result = await stage.process(query, 'PreProcessor')
 
@@ -276,7 +279,7 @@ class TestPreProcessorModelSelection:
         app.plugin_connector.emit_event = AsyncMock(return_value=mock_event_ctx)
 
         stage = preproc.PreProcessor(app)
-        query = text_query("hello")
+        query = text_query('hello')
 
         # Set pipeline config with primary model
         query.pipeline_config = {
@@ -335,7 +338,7 @@ class TestPreProcessorModelSelection:
         app.plugin_connector.emit_event = AsyncMock(return_value=mock_event_ctx)
 
         stage = preproc.PreProcessor(app)
-        query = text_query("hello")
+        query = text_query('hello')
 
         query.pipeline_config = {
             'ai': {
@@ -384,7 +387,7 @@ class TestPreProcessorVariables:
         app.plugin_connector.emit_event = AsyncMock(return_value=mock_event_ctx)
 
         stage = preproc.PreProcessor(app)
-        query = text_query("hello", sender_id=67890)
+        query = text_query('hello', sender_id=67890)
 
         result = await stage.process(query, 'PreProcessor')
 
@@ -421,7 +424,7 @@ class TestPreProcessorVariables:
         app.plugin_connector.emit_event = AsyncMock(return_value=mock_event_ctx)
 
         stage = preproc.PreProcessor(app)
-        query = group_text_query("hello", group_id=99999)
+        query = group_text_query('hello', group_id=99999)
 
         result = await stage.process(query, 'PreProcessor')
 

tests/unit_tests/pipeline/test_ratelimit.py

@@ -46,7 +46,7 @@ class TestFixedWindowAlgo:
             'safety': {
                 'rate-limit': {
                     'window-length': 60,  # 60 seconds window
-                    'limitation': 10,     # 10 requests per window
+                    'limitation': 10,  # 10 requests per window
                     'strategy': 'drop',
                 }
             }
@@ -75,11 +75,9 @@ class TestFixedWindowAlgo:
         # Make requests within limit
         for i in range(10):
             result = await algo.require_access(
-                sample_query_with_rate_limit,
-                provider_session.LauncherTypes.PERSON,
-                '12345'
+                sample_query_with_rate_limit, provider_session.LauncherTypes.PERSON, '12345'
             )
-            assert result is True, f"Request {i+1} should be allowed"
+            assert result is True, f'Request {i + 1} should be allowed'
 
     @pytest.mark.asyncio
     async def test_fixedwin_exceeds_limit_drop_strategy(self, mock_app_for_algo, sample_query_with_rate_limit):
@@ -91,20 +89,12 @@ class TestFixedWindowAlgo:
 
         # Exhaust the limit
         for i in range(10):
-            await algo.require_access(
-                sample_query_with_rate_limit,
-                provider_session.LauncherTypes.PERSON,
-                '12345'
-            )
+            await algo.require_access(sample_query_with_rate_limit, provider_session.LauncherTypes.PERSON, '12345')
 
         # Next request should be denied
-        result = await algo.require_access(
-            sample_query_with_rate_limit,
-            provider_session.LauncherTypes.PERSON,
-            '12345'
-        )
+        result = await algo.require_access(sample_query_with_rate_limit, provider_session.LauncherTypes.PERSON, '12345')
 
-        assert result is False, "Request exceeding limit should be denied"
+        assert result is False, 'Request exceeding limit should be denied'
 
     @pytest.mark.asyncio
     async def test_fixedwin_different_sessions_isolated(self, mock_app_for_algo, sample_query_with_rate_limit):
@@ -116,20 +106,14 @@ class TestFixedWindowAlgo:
 
         # Exhaust limit for session 1
         for i in range(10):
-            await algo.require_access(
-                sample_query_with_rate_limit,
-                provider_session.LauncherTypes.PERSON,
-                'session1'
-            )
+            await algo.require_access(sample_query_with_rate_limit, provider_session.LauncherTypes.PERSON, 'session1')
 
         # Session 2 should still have its own limit
         result = await algo.require_access(
-            sample_query_with_rate_limit,
-            provider_session.LauncherTypes.PERSON,
-            'session2'
+            sample_query_with_rate_limit, provider_session.LauncherTypes.PERSON, 'session2'
         )
 
-        assert result is True, "Different session should have independent limit"
+        assert result is True, 'Different session should have independent limit'
 
     @pytest.mark.asyncio
     async def test_fixedwin_limit_one_request(self, mock_app_for_algo, sample_query):
@@ -150,19 +134,11 @@ class TestFixedWindowAlgo:
         await algo.initialize()
 
         # First request allowed
-        result1 = await algo.require_access(
-            sample_query,
-            provider_session.LauncherTypes.PERSON,
-            '12345'
-        )
+        result1 = await algo.require_access(sample_query, provider_session.LauncherTypes.PERSON, '12345')
         assert result1 is True
 
         # Second request denied
-        result2 = await algo.require_access(
-            sample_query,
-            provider_session.LauncherTypes.PERSON,
-            '12345'
-        )
+        result2 = await algo.require_access(sample_query, provider_session.LauncherTypes.PERSON, '12345')
         assert result2 is False
 
     @pytest.mark.asyncio
@@ -174,11 +150,7 @@ class TestFixedWindowAlgo:
         await algo.initialize()
 
         # First request creates container
-        await algo.require_access(
-            sample_query_with_rate_limit,
-            provider_session.LauncherTypes.PERSON,
-            '12345'
-        )
+        await algo.require_access(sample_query_with_rate_limit, provider_session.LauncherTypes.PERSON, '12345')
 
         # Key format: 'LauncherTypes.PERSON_12345' (enum string representation)
         expected_key = 'LauncherTypes.PERSON_12345'
@@ -230,7 +202,7 @@ class TestFixedWindowAlgo:
 
         # New request should be allowed (new window)
         result = await algo.require_access(sample_query, provider_session.LauncherTypes.PERSON, 'test')
-        assert result is True, "New window should allow new requests"
+        assert result is True, 'New window should allow new requests'
 
     @pytest.mark.asyncio
     async def test_fixedwin_wait_strategy_blocks_until_next_window(self, mock_app_for_algo, sample_query):
@@ -256,29 +228,21 @@ class TestFixedWindowAlgo:
 
         # First request allowed
         start_time = time.time()
-        result1 = await algo.require_access(
-            sample_query,
-            provider_session.LauncherTypes.PERSON,
-            'wait_test'
-        )
+        result1 = await algo.require_access(sample_query, provider_session.LauncherTypes.PERSON, 'wait_test')
         assert result1 is True
 
         # Exhaust limit
         await algo.require_access(sample_query, provider_session.LauncherTypes.PERSON, 'wait_test')
 
         # Third request should wait and then succeed
-        result3 = await algo.require_access(
-            sample_query,
-            provider_session.LauncherTypes.PERSON,
-            'wait_test'
-        )
+        result3 = await algo.require_access(sample_query, provider_session.LauncherTypes.PERSON, 'wait_test')
         elapsed = time.time() - start_time
 
-        assert result3 is True, "After wait, request should succeed"
+        assert result3 is True, 'After wait, request should succeed'
         # Should have waited approximately until next window
         # With 1-second window, elapsed should be > 0.5 second (allowing for timing variance)
         # Note: This is a timing-sensitive test, so we use a generous tolerance
-        assert elapsed >= 0.5, f"Should have waited for next window, elapsed={elapsed:.2f}s"
+        assert elapsed >= 0.5, f'Should have waited for next window, elapsed={elapsed:.2f}s'
 
     @pytest.mark.asyncio
     async def test_fixedwin_release_access(self, mock_app_for_algo, sample_query_with_rate_limit):
@@ -289,11 +253,7 @@ class TestFixedWindowAlgo:
         await algo.initialize()
 
         # release_access is empty in current implementation
-        await algo.release_access(
-            sample_query_with_rate_limit,
-            provider_session.LauncherTypes.PERSON,
-            '12345'
-        )
+        await algo.release_access(sample_query_with_rate_limit, provider_session.LauncherTypes.PERSON, '12345')
 
         # Should not raise or change state
         assert 'person_12345' not in algo.containers

tests/unit_tests/pipeline/test_wrapper.py

@@ -55,7 +55,7 @@ def make_session():
         launcher_type=provider_session.LauncherTypes.PERSON,
         launcher_id=12345,
         sender_id=12345,
-        use_prompt_name="default",
+        use_prompt_name='default',
         using_conversation=None,
         conversations=[],
     )
@@ -93,11 +93,9 @@ class TestResponseWrapperMessageChain:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
-        query.resp_messages = [
-            platform_message.MessageChain([platform_message.Plain(text="response")])
-        ]
+        query.resp_messages = [platform_message.MessageChain([platform_message.Plain(text='response')])]
         query.resp_message_chain = []
 
         results = []
@@ -125,7 +123,7 @@ class TestResponseWrapperCommand:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         query.resp_message_chain = []
 
@@ -133,7 +131,7 @@ class TestResponseWrapperCommand:
         command_resp = Mock()
         command_resp.role = 'command'
         command_resp.get_content_platform_message_chain = Mock(
-            return_value=platform_message.MessageChain([platform_message.Plain(text="Help info")])
+            return_value=platform_message.MessageChain([platform_message.Plain(text='Help info')])
         )
         query.resp_messages = [command_resp]
 
@@ -163,7 +161,7 @@ class TestResponseWrapperPlugin:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         query.resp_message_chain = []
 
@@ -171,7 +169,7 @@ class TestResponseWrapperPlugin:
         plugin_resp = Mock()
         plugin_resp.role = 'plugin'
         plugin_resp.get_content_platform_message_chain = Mock(
-            return_value=platform_message.MessageChain([platform_message.Plain(text="Plugin response")])
+            return_value=platform_message.MessageChain([platform_message.Plain(text='Plugin response')])
         )
         query.resp_messages = [plugin_resp]
 
@@ -211,17 +209,17 @@ class TestResponseWrapperAssistant:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         query.resp_message_chain = []
 
         # Create assistant response with content
         assistant_resp = Mock()
         assistant_resp.role = 'assistant'
-        assistant_resp.content = "Hello back!"
+        assistant_resp.content = 'Hello back!'
         assistant_resp.tool_calls = None
         assistant_resp.get_content_platform_message_chain = Mock(
-            return_value=platform_message.MessageChain([platform_message.Plain(text="Hello back!")])
+            return_value=platform_message.MessageChain([platform_message.Plain(text='Hello back!')])
         )
         query.resp_messages = [assistant_resp]
 
@@ -247,7 +245,7 @@ class TestResponseWrapperAssistant:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         query.resp_message_chain = []
 
@@ -292,7 +290,7 @@ class TestResponseWrapperAssistant:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         query.resp_message_chain = []
 
@@ -303,10 +301,10 @@ class TestResponseWrapperAssistant:
 
         assistant_resp = Mock()
         assistant_resp.role = 'assistant'
-        assistant_resp.content = "Processing..."
+        assistant_resp.content = 'Processing...'
         assistant_resp.tool_calls = [mock_tool_call]
         assistant_resp.get_content_platform_message_chain = Mock(
-            return_value=platform_message.MessageChain([platform_message.Plain(text="Processing...")])
+            return_value=platform_message.MessageChain([platform_message.Plain(text='Processing...')])
         )
         query.resp_messages = [assistant_resp]
 
@@ -346,17 +344,17 @@ class TestResponseWrapperInterrupt:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         query.resp_message_chain = []
 
         # Create assistant response with content
         assistant_resp = Mock()
         assistant_resp.role = 'assistant'
-        assistant_resp.content = "Hello!"
+        assistant_resp.content = 'Hello!'
         assistant_resp.tool_calls = None
         assistant_resp.get_content_platform_message_chain = Mock(
-            return_value=platform_message.MessageChain([platform_message.Plain(text="Hello!")])
+            return_value=platform_message.MessageChain([platform_message.Plain(text='Hello!')])
         )
         query.resp_messages = [assistant_resp]
 
@@ -384,7 +382,7 @@ class TestResponseWrapperCustomReply:
         app.sess_mgr.get_session = AsyncMock(return_value=session)
 
         # Mock plugin connector with custom reply
-        custom_chain = platform_message.MessageChain([platform_message.Plain(text="Custom reply")])
+        custom_chain = platform_message.MessageChain([platform_message.Plain(text='Custom reply')])
         mock_event_ctx = Mock()
         mock_event_ctx.is_prevented_default = Mock(return_value=False)
         mock_event_ctx.event = Mock()
@@ -397,17 +395,17 @@ class TestResponseWrapperCustomReply:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         query.resp_message_chain = []
 
         # Create assistant response
         assistant_resp = Mock()
         assistant_resp.role = 'assistant'
-        assistant_resp.content = "Default reply"
+        assistant_resp.content = 'Default reply'
         assistant_resp.tool_calls = None
         assistant_resp.get_content_platform_message_chain = Mock(
-            return_value=platform_message.MessageChain([platform_message.Plain(text="Default reply")])
+            return_value=platform_message.MessageChain([platform_message.Plain(text='Default reply')])
         )
         query.resp_messages = [assistant_resp]
 
@@ -421,7 +419,7 @@ class TestResponseWrapperCustomReply:
         assert len(results[0].new_query.resp_message_chain) == 1
         # Should be the custom chain
         chain = results[0].new_query.resp_message_chain[0]
-        assert "Custom reply" in str(chain)
+        assert 'Custom reply' in str(chain)
 
 
 class TestResponseWrapperVariables:
@@ -452,7 +450,7 @@ class TestResponseWrapperVariables:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         query.resp_message_chain = []
         query.variables['_pipeline_bound_plugins'] = ['plugin1', 'plugin2']
@@ -460,10 +458,10 @@ class TestResponseWrapperVariables:
         # Create assistant response
         assistant_resp = Mock()
         assistant_resp.role = 'assistant'
-        assistant_resp.content = "Hello"
+        assistant_resp.content = 'Hello'
         assistant_resp.tool_calls = None
         assistant_resp.get_content_platform_message_chain = Mock(
-            return_value=platform_message.MessageChain([platform_message.Plain(text="Hello")])
+            return_value=platform_message.MessageChain([platform_message.Plain(text='Hello')])
         )
         query.resp_messages = [assistant_resp]
 

tests/unit_tests/pipeline/test_wrapper_outbound_attachments.py

@@ -0,0 +1,146 @@
+"""Unit tests for ResponseWrapper outbound-attachment helpers.
+
+Covers the sandbox -> user attachment path added for the Box attachment
+round-trip:
+
+* ``_is_final_assistant_message`` — only the terminal, tool-call-free assistant
+  message (or a final MessageChunk) should trigger collection.
+* ``_append_outbound_attachments`` — collects sandbox outbox files exactly once
+  per query and maps each descriptor to the right platform component, swallowing
+  collection errors.
+"""
+
+from __future__ import annotations
+
+from types import SimpleNamespace
+from unittest.mock import AsyncMock, Mock
+
+import pytest
+
+import langbot_plugin.api.entities.builtin.platform.message as platform_message
+import langbot_plugin.api.entities.builtin.provider.message as provider_message
+
+from langbot.pkg.pipeline.wrapper.wrapper import ResponseWrapper
+
+
+def _make_wrapper(box_service) -> ResponseWrapper:
+    app = SimpleNamespace(logger=Mock())
+    wrapper = ResponseWrapper.__new__(ResponseWrapper)
+    wrapper.ap = app
+    return wrapper
+
+
+def _make_query():
+    return SimpleNamespace(variables={})
+
+
+def test_is_final_assistant_message_plain_assistant():
+    wrapper = _make_wrapper(box_service=None)
+    msg = provider_message.Message(role='assistant', content='done')
+    assert wrapper._is_final_assistant_message(msg) is True
+
+
+def test_is_final_assistant_message_rejects_non_assistant():
+    wrapper = _make_wrapper(box_service=None)
+    msg = provider_message.Message(role='tool', content='{}')
+    assert wrapper._is_final_assistant_message(msg) is False
+
+
+def test_is_final_assistant_message_rejects_tool_call_round():
+    wrapper = _make_wrapper(box_service=None)
+    msg = provider_message.Message(
+        role='assistant',
+        content='calling',
+        tool_calls=[
+            provider_message.ToolCall(
+                id='c1',
+                type='function',
+                function=provider_message.FunctionCall(name='exec', arguments='{}'),
+            )
+        ],
+    )
+    assert wrapper._is_final_assistant_message(msg) is False
+
+
+def test_is_final_assistant_message_non_final_chunk():
+    wrapper = _make_wrapper(box_service=None)
+    chunk = provider_message.MessageChunk(role='assistant', content='partial', is_final=False)
+    assert wrapper._is_final_assistant_message(chunk) is False
+
+    final_chunk = provider_message.MessageChunk(role='assistant', content='partial', is_final=True)
+    assert wrapper._is_final_assistant_message(final_chunk) is True
+
+
+@pytest.mark.asyncio
+async def test_append_outbound_attachments_maps_each_type():
+    box_service = SimpleNamespace(
+        available=True,
+        collect_outbound_attachments=AsyncMock(
+            return_value=[
+                {'type': 'Image', 'base64': 'data:image/png;base64,iVBORw0K'},
+                {'type': 'Voice', 'base64': 'data:audio/wav;base64,UklGRg=='},
+                {'type': 'File', 'name': 'report.xlsx', 'base64': 'data:app;base64,UEsDBA=='},
+            ]
+        ),
+    )
+    wrapper = _make_wrapper(box_service)
+    wrapper.ap.box_service = box_service
+    query = _make_query()
+    chain = platform_message.MessageChain([])
+
+    await wrapper._append_outbound_attachments(query, chain)
+
+    kinds = [type(c).__name__ for c in chain]
+    assert kinds == ['Image', 'Voice', 'File']
+    assert query.variables['_sandbox_outbound_collected'] is True
+    # File keeps its name
+    file_comp = chain[2]
+    assert getattr(file_comp, 'name', None) == 'report.xlsx'
+
+
+@pytest.mark.asyncio
+async def test_append_outbound_attachments_runs_once_per_query():
+    box_service = SimpleNamespace(
+        available=True,
+        collect_outbound_attachments=AsyncMock(return_value=[]),
+    )
+    wrapper = _make_wrapper(box_service)
+    wrapper.ap.box_service = box_service
+    query = _make_query()
+    query.variables['_sandbox_outbound_collected'] = True
+    chain = platform_message.MessageChain([])
+
+    await wrapper._append_outbound_attachments(query, chain)
+
+    box_service.collect_outbound_attachments.assert_not_awaited()
+    assert len(chain) == 0
+
+
+@pytest.mark.asyncio
+async def test_append_outbound_attachments_noop_without_box_service():
+    wrapper = _make_wrapper(box_service=None)
+    wrapper.ap.box_service = None
+    query = _make_query()
+    chain = platform_message.MessageChain([])
+
+    await wrapper._append_outbound_attachments(query, chain)
+    assert len(chain) == 0
+    # not marked collected, since service is unavailable
+    assert '_sandbox_outbound_collected' not in query.variables
+
+
+@pytest.mark.asyncio
+async def test_append_outbound_attachments_swallows_collection_error():
+    box_service = SimpleNamespace(
+        available=True,
+        collect_outbound_attachments=AsyncMock(side_effect=RuntimeError('boom')),
+    )
+    wrapper = _make_wrapper(box_service)
+    wrapper.ap.box_service = box_service
+    query = _make_query()
+    chain = platform_message.MessageChain([])
+
+    # must not raise
+    await wrapper._append_outbound_attachments(query, chain)
+    assert len(chain) == 0
+    wrapper.ap.logger.warning.assert_called_once()

tests/unit_tests/platform/test_websocket_adapter_attachments.py

@@ -0,0 +1,92 @@
+"""Unit tests for WebSocketAdapter._process_image_components.
+
+The web debug client uploads Image / Voice / File components carrying a storage
+key in ``path``. This helper resolves each to a base64 data URI (so multimodal
+LLM input and the Box sandbox inbox have usable bytes), then deletes the
+consumed storage object and clears ``path``. Covers mimetype selection per
+type and graceful error handling.
+"""
+
+from __future__ import annotations
+
+import base64
+from unittest.mock import AsyncMock, Mock
+
+import pytest
+
+from langbot.pkg.platform.sources.websocket_adapter import WebSocketAdapter
+
+
+def _make_adapter(load_return=b'hello', load_side_effect=None):
+    provider = Mock()
+    provider.load = AsyncMock(return_value=load_return, side_effect=load_side_effect)
+    provider.delete = AsyncMock()
+    ap = Mock()
+    ap.storage_mgr.storage_provider = provider
+    logger = Mock()
+    logger.error = AsyncMock()
+    # WebSocketAdapter is a pydantic model; bypass full __init__/validation.
+    adapter = WebSocketAdapter.model_construct(ap=ap, logger=logger)
+    return adapter, provider
+
+
+@pytest.mark.asyncio
+async def test_image_jpeg_mimetype_and_cleanup():
+    adapter, provider = _make_adapter(load_return=b'\xff\xd8\xff')
+    chain = [{'type': 'Image', 'path': 'storage://abc/photo.jpg'}]
+
+    await adapter._process_image_components(chain)
+
+    expected_b64 = base64.b64encode(b'\xff\xd8\xff').decode('utf-8')
+    assert chain[0]['base64'] == f'data:image/jpeg;base64,{expected_b64}'
+    assert chain[0]['path'] == ''  # consumed
+    provider.delete.assert_awaited_once_with('storage://abc/photo.jpg')
+
+
+@pytest.mark.asyncio
+async def test_image_defaults_to_png():
+    adapter, _ = _make_adapter()
+    chain = [{'type': 'Image', 'path': 'storage://abc/blob'}]
+    await adapter._process_image_components(chain)
+    assert chain[0]['base64'].startswith('data:image/png;base64,')
+
+
+@pytest.mark.asyncio
+async def test_voice_uses_guessed_or_wav_mimetype():
+    adapter, _ = _make_adapter()
+    chain = [{'type': 'Voice', 'path': 'storage://abc/clip.wav'}]
+    await adapter._process_image_components(chain)
+    assert chain[0]['base64'].startswith('data:audio/')
+
+
+@pytest.mark.asyncio
+async def test_file_uses_octet_stream_fallback():
+    adapter, _ = _make_adapter()
+    chain = [{'type': 'File', 'path': 'storage://abc/unknownblob'}]
+    await adapter._process_image_components(chain)
+    assert chain[0]['base64'].startswith('data:application/octet-stream;base64,')
+
+
+@pytest.mark.asyncio
+async def test_skips_components_without_path_or_unknown_type():
+    adapter, provider = _make_adapter()
+    chain = [
+        {'type': 'Image', 'path': ''},  # no path
+        {'type': 'Plain', 'path': 'storage://abc/x'},  # not a file component
+        {'type': 'At', 'target': '123'},  # no path key at all
+    ]
+    await adapter._process_image_components(chain)
+    provider.load.assert_not_awaited()
+    assert 'base64' not in chain[0]
+    assert 'base64' not in chain[1]
+
+
+@pytest.mark.asyncio
+async def test_load_failure_is_logged_not_raised():
+    adapter, _ = _make_adapter(load_side_effect=RuntimeError('storage down'))
+    chain = [{'type': 'File', 'path': 'storage://abc/doc.pdf'}]
+
+    # must not raise
+    await adapter._process_image_components(chain)
+    assert 'base64' not in chain[0]
+    adapter.logger.error.assert_awaited_once()

tests/unit_tests/plugin/test_connector_methods.py

@@ -6,6 +6,7 @@ Tests cover:
 - RAG methods (ingest, retrieve, schema)
 - Disabled plugin early returns
 """
+
 from __future__ import annotations
 
 import pytest
@@ -86,16 +87,12 @@ class TestListPlugins:
             return_value=[
                 {
                     'manifest': {'manifest': {'metadata': {'author': 'a', 'name': 'p1'}}},
-                    'components': [
-                        {'manifest': {'manifest': {'kind': 'Command'}}}
-                    ],
+                    'components': [{'manifest': {'manifest': {'kind': 'Command'}}}],
                     'debug': False,
                 },
                 {
                     'manifest': {'manifest': {'metadata': {'author': 'b', 'name': 'p2'}}},
-                    'components': [
-                        {'manifest': {'manifest': {'kind': 'Tool'}}}
-                    ],
+                    'components': [{'manifest': {'manifest': {'kind': 'Tool'}}}],
                     'debug': False,
                 },
             ]
@@ -127,9 +124,7 @@ class TestListPlugins:
                 },
             ]
         )
-        connector.ap.persistence_mgr.execute_async = AsyncMock(
-            return_value=Mock(__iter__=lambda self: iter([]))
-        )
+        connector.ap.persistence_mgr.execute_async = AsyncMock(return_value=Mock(__iter__=lambda self: iter([])))
 
         result = await connector.list_plugins()
 
@@ -230,7 +225,8 @@ class TestCallParser:
         )
 
         connector.handler.parse_document.assert_called_once_with(
-            'author', 'parser',
+            'author',
+            'parser',
             {'mime_type': 'text/plain', 'filename': 'test.txt'},
             b'file content',
         )
@@ -251,9 +247,7 @@ class TestRAGMethods:
 
         result = await connector.call_rag_ingest('author/engine', {'file': 'test.pdf'})
 
-        connector.handler.rag_ingest_document.assert_called_once_with(
-            'author', 'engine', {'file': 'test.pdf'}
-        )
+        connector.handler.rag_ingest_document.assert_called_once_with('author', 'engine', {'file': 'test.pdf'})
         assert result['status'] == 'success'
 
     @pytest.mark.asyncio
@@ -264,14 +258,16 @@ class TestRAGMethods:
 
         connector.handler = AsyncMock()
         connector.handler.retrieve_knowledge = AsyncMock(
-            return_value={'results': [{'id': 'doc1', 'content': [{'type': 'text', 'text': 'test'}], 'metadata': {}, 'distance': 0.1}]}
+            return_value={
+                'results': [
+                    {'id': 'doc1', 'content': [{'type': 'text', 'text': 'test'}], 'metadata': {}, 'distance': 0.1}
+                ]
+            }
         )
 
         result = await connector.call_rag_retrieve('author/engine', {'query': 'test'})
 
-        connector.handler.retrieve_knowledge.assert_called_once_with(
-            'author', 'engine', '', {'query': 'test'}
-        )
+        connector.handler.retrieve_knowledge.assert_called_once_with('author', 'engine', '', {'query': 'test'})
         assert result == {
             'results': [
                 {
@@ -290,9 +286,7 @@ class TestRAGMethods:
         connector = create_mock_connector()
 
         connector.handler = AsyncMock()
-        connector.handler.get_rag_creation_schema = AsyncMock(
-            return_value={'properties': {'name': {'type': 'string'}}}
-        )
+        connector.handler.get_rag_creation_schema = AsyncMock(return_value={'properties': {'name': {'type': 'string'}}})
 
         result = await connector.get_rag_creation_schema('author/engine')
 
@@ -326,9 +320,7 @@ class TestRAGMethods:
 
         await connector.rag_on_kb_create('author/engine', 'kb-uuid', {'model': 'test'})
 
-        connector.handler.rag_on_kb_create.assert_called_once_with(
-            'author', 'engine', 'kb-uuid', {'model': 'test'}
-        )
+        connector.handler.rag_on_kb_create.assert_called_once_with('author', 'engine', 'kb-uuid', {'model': 'test'})
 
     @pytest.mark.asyncio
     async def test_rag_on_kb_delete(self):
@@ -354,9 +346,7 @@ class TestRAGMethods:
 
         result = await connector.call_rag_delete_document('author/engine', 'doc-uuid', 'kb-uuid')
 
-        connector.handler.rag_delete_document.assert_called_once_with(
-            'author', 'engine', 'doc-uuid', 'kb-uuid'
-        )
+        connector.handler.rag_delete_document.assert_called_once_with('author', 'engine', 'doc-uuid', 'kb-uuid')
         assert result is True
 
 
@@ -446,9 +436,7 @@ class TestGetPluginInfo:
         connector = create_mock_connector()
 
         connector.handler = AsyncMock()
-        connector.handler.get_plugin_info = AsyncMock(
-            return_value={'manifest': {'metadata': {'name': 'plugin'}}}
-        )
+        connector.handler.get_plugin_info = AsyncMock(return_value={'manifest': {'metadata': {'name': 'plugin'}}})
 
         result = await connector.get_plugin_info('author', 'plugin')
 
@@ -470,9 +458,7 @@ class TestSetPluginConfig:
 
         await connector.set_plugin_config('author', 'plugin', {'setting': 'value'})
 
-        connector.handler.set_plugin_config.assert_called_once_with(
-            'author', 'plugin', {'setting': 'value'}
-        )
+        connector.handler.set_plugin_config.assert_called_once_with('author', 'plugin', {'setting': 'value'})
 
 
 class TestPingPluginRuntime:

tests/unit_tests/plugin/test_connector_static.py

@@ -3,6 +3,7 @@
 Tests cover:
 - _parse_plugin_id() parsing and validation
 """
+
 from __future__ import annotations
 
 import pytest

tests/unit_tests/plugin/test_extract_deps.py

@@ -6,6 +6,7 @@ Tests cover:
 - Handling missing requirements.txt
 - Handling empty/malformed requirements.txt
 """
+
 from __future__ import annotations
 
 import zipfile
@@ -82,13 +83,13 @@ class TestExtractDepsMetadata:
         """Test that comments and empty lines are filtered."""
         connector_instance = create_mock_connector()
 
-        requirements = '''# This is a comment
+        requirements = """# This is a comment
 requests>=2.0
 
 # Another comment
 flask==1.0
 
-numpy'''
+numpy"""
         zip_bytes = create_zip_with_requirements(requirements)
 
         task_context = Mock()
@@ -147,9 +148,9 @@ numpy'''
         """Test handling requirements.txt with only comments."""
         connector_instance = create_mock_connector()
 
-        requirements = '''# Comment 1
+        requirements = """# Comment 1
 # Comment 2
-# Comment 3'''
+# Comment 3"""
         zip_bytes = create_zip_with_requirements(requirements)
 
         task_context = Mock()

tests/unit_tests/plugin/test_handler.py

@@ -40,11 +40,13 @@ class TestHandlerQueryVariables:
         """Test set_query_var returns error when query not found."""
         runtime_handler = make_handler(mock_app)
 
-        response = await runtime_handler.actions[PluginToRuntimeAction.SET_QUERY_VAR.value]({
-            'query_id': 'nonexistent-query',
-            'key': 'test_var',
-            'value': 'test_value',
-        })
+        response = await runtime_handler.actions[PluginToRuntimeAction.SET_QUERY_VAR.value](
+            {
+                'query_id': 'nonexistent-query',
+                'key': 'test_var',
+                'value': 'test_value',
+            }
+        )
 
         assert response.code != 0
         assert 'nonexistent-query' in response.message
@@ -58,11 +60,13 @@ class TestHandlerQueryVariables:
 
         mock_app.query_pool.cached_queries['test-query'] = mock_query
 
-        response = await runtime_handler.actions[PluginToRuntimeAction.SET_QUERY_VAR.value]({
-            'query_id': 'test-query',
-            'key': 'test_var',
-            'value': 'test_value',
-        })
+        response = await runtime_handler.actions[PluginToRuntimeAction.SET_QUERY_VAR.value](
+            {
+                'query_id': 'test-query',
+                'key': 'test_var',
+                'value': 'test_value',
+            }
+        )
 
         assert response.code == 0
         assert mock_query.variables['test_var'] == 'test_value'
@@ -76,10 +80,12 @@ class TestHandlerQueryVariables:
 
         mock_app.query_pool.cached_queries['test-query'] = mock_query
 
-        response = await runtime_handler.actions[PluginToRuntimeAction.GET_QUERY_VAR.value]({
-            'query_id': 'test-query',
-            'key': 'existing_var',
-        })
+        response = await runtime_handler.actions[PluginToRuntimeAction.GET_QUERY_VAR.value](
+            {
+                'query_id': 'test-query',
+                'key': 'existing_var',
+            }
+        )
 
         assert response.code == 0
         assert response.data == {'value': 'existing_value'}
@@ -93,9 +99,11 @@ class TestHandlerQueryVariables:
 
         mock_app.query_pool.cached_queries['test-query'] = mock_query
 
-        response = await runtime_handler.actions[PluginToRuntimeAction.GET_QUERY_VARS.value]({
-            'query_id': 'test-query',
-        })
+        response = await runtime_handler.actions[PluginToRuntimeAction.GET_QUERY_VARS.value](
+            {
+                'query_id': 'test-query',
+            }
+        )
 
         assert response.code == 0
         assert response.data == {'vars': mock_query.variables}
@@ -108,7 +116,7 @@ class TestHandlerRagErrorResponse:
         """Test basic error response creation."""
         from langbot.pkg.plugin.handler import _make_rag_error_response
 
-        error = Exception("test error")
+        error = Exception('test error')
         response = _make_rag_error_response(error, 'TestError')
 
         # ActionResponse is a pydantic model, check message field
@@ -120,13 +128,8 @@ class TestHandlerRagErrorResponse:
         """Test error response with extra context."""
         from langbot.pkg.plugin.handler import _make_rag_error_response
 
-        error = ValueError("invalid input")
-        response = _make_rag_error_response(
-            error,
-            'ValidationError',
-            field='name',
-            value='test'
-        )
+        error = ValueError('invalid input')
+        response = _make_rag_error_response(error, 'ValidationError', field='name', value='test')
 
         assert 'ValidationError' in response.message
         assert 'field=name' in response.message
@@ -137,7 +140,7 @@ class TestHandlerRagErrorResponse:
         """Test error response includes exception type."""
         from langbot.pkg.plugin.handler import _make_rag_error_response
 
-        error = RuntimeError("connection failed")
+        error = RuntimeError('connection failed')
         response = _make_rag_error_response(error, 'ConnectionError')
 
         assert 'RuntimeError' in response.message
@@ -148,7 +151,7 @@ class TestHandlerRagErrorResponse:
         """Test error response with no extra context."""
         from langbot.pkg.plugin.handler import _make_rag_error_response
 
-        error = KeyError("missing_key")
+        error = KeyError('missing_key')
         response = _make_rag_error_response(error, 'LookupError')
 
         # No context parts means no brackets

tests/unit_tests/plugin/test_handler_actions.py

@@ -47,12 +47,14 @@ class TestInitializePluginSettings:
             Mock(),
         ]
 
-        response = await runtime_handler.actions[RuntimeToLangBotAction.INITIALIZE_PLUGIN_SETTINGS.value]({
-            'plugin_author': 'test-author',
-            'plugin_name': 'test-plugin',
-            'install_source': 'local',
-            'install_info': {'path': '/test'},
-        })
+        response = await runtime_handler.actions[RuntimeToLangBotAction.INITIALIZE_PLUGIN_SETTINGS.value](
+            {
+                'plugin_author': 'test-author',
+                'plugin_name': 'test-plugin',
+                'install_source': 'local',
+                'install_info': {'path': '/test'},
+            }
+        )
 
         assert response.code == 0
         assert app.persistence_mgr.execute_async.await_count == 2
@@ -82,12 +84,14 @@ class TestInitializePluginSettings:
             Mock(),
         ]
 
-        response = await runtime_handler.actions[RuntimeToLangBotAction.INITIALIZE_PLUGIN_SETTINGS.value]({
-            'plugin_author': 'test-author',
-            'plugin_name': 'test-plugin',
-            'install_source': 'github',
-            'install_info': {'repo': 'author/name'},
-        })
+        response = await runtime_handler.actions[RuntimeToLangBotAction.INITIALIZE_PLUGIN_SETTINGS.value](
+            {
+                'plugin_author': 'test-author',
+                'plugin_name': 'test-plugin',
+                'install_source': 'github',
+                'install_info': {'repo': 'author/name'},
+            }
+        )
 
         assert response.code == 0
         assert app.persistence_mgr.execute_async.await_count == 3
@@ -161,9 +165,7 @@ class TestSetBinaryStorage:
         runtime_handler = make_handler(app)
         app.persistence_mgr.execute_async.return_value = make_result(SimpleNamespace(value=b'old'))
 
-        response = await runtime_handler.actions[RuntimeToLangBotAction.SET_BINARY_STORAGE.value](
-            self.payload(b'new')
-        )
+        response = await runtime_handler.actions[RuntimeToLangBotAction.SET_BINARY_STORAGE.value](self.payload(b'new'))
 
         assert response.code == 0
         assert app.persistence_mgr.execute_async.await_count == 2
@@ -203,9 +205,7 @@ class TestSetBinaryStorage:
         runtime_handler = make_handler(app)
         app.instance_config.data['plugin']['binary_storage']['max_value_bytes'] = 0
 
-        response = await runtime_handler.actions[RuntimeToLangBotAction.SET_BINARY_STORAGE.value](
-            self.payload(b'x')
-        )
+        response = await runtime_handler.actions[RuntimeToLangBotAction.SET_BINARY_STORAGE.value](self.payload(b'x'))
 
         assert response.code != 0
         assert '1 > 0 bytes' in response.message
@@ -228,10 +228,12 @@ class TestGetPluginSettings:
         runtime_handler = make_handler(app)
         app.persistence_mgr.execute_async.return_value = make_result()
 
-        response = await runtime_handler.actions[RuntimeToLangBotAction.GET_PLUGIN_SETTINGS.value]({
-            'plugin_author': 'test-author',
-            'plugin_name': 'test-plugin',
-        })
+        response = await runtime_handler.actions[RuntimeToLangBotAction.GET_PLUGIN_SETTINGS.value](
+            {
+                'plugin_author': 'test-author',
+                'plugin_name': 'test-plugin',
+            }
+        )
 
         assert response.code == 0
         assert response.data == {
@@ -255,10 +257,12 @@ class TestGetPluginSettings:
         )
         app.persistence_mgr.execute_async.return_value = make_result(setting)
 
-        response = await runtime_handler.actions[RuntimeToLangBotAction.GET_PLUGIN_SETTINGS.value]({
-            'plugin_author': 'test-author',
-            'plugin_name': 'test-plugin',
-        })
+        response = await runtime_handler.actions[RuntimeToLangBotAction.GET_PLUGIN_SETTINGS.value](
+            {
+                'plugin_author': 'test-author',
+                'plugin_name': 'test-plugin',
+            }
+        )
 
         assert response.code == 0
         assert response.data == {
@@ -286,11 +290,13 @@ class TestGetBinaryStorage:
         runtime_handler = make_handler(app)
         app.persistence_mgr.execute_async.return_value = make_result(SimpleNamespace(value=b'test binary content'))
 
-        response = await runtime_handler.actions[RuntimeToLangBotAction.GET_BINARY_STORAGE.value]({
-            'key': 'test-key',
-            'owner_type': 'plugin',
-            'owner': 'test-owner',
-        })
+        response = await runtime_handler.actions[RuntimeToLangBotAction.GET_BINARY_STORAGE.value](
+            {
+                'key': 'test-key',
+                'owner_type': 'plugin',
+                'owner': 'test-owner',
+            }
+        )
 
         assert response.code == 0
         assert response.data == {
@@ -303,11 +309,13 @@ class TestGetBinaryStorage:
         runtime_handler = make_handler(app)
         app.persistence_mgr.execute_async.return_value = make_result()
 
-        response = await runtime_handler.actions[RuntimeToLangBotAction.GET_BINARY_STORAGE.value]({
-            'key': 'test-key',
-            'owner_type': 'plugin',
-            'owner': 'test-owner',
-        })
+        response = await runtime_handler.actions[RuntimeToLangBotAction.GET_BINARY_STORAGE.value](
+            {
+                'key': 'test-key',
+                'owner_type': 'plugin',
+                'owner': 'test-owner',
+            }
+        )
 
         assert response.code != 0
         assert 'Storage with key test-key not found' in response.message
@@ -329,9 +337,11 @@ class TestHandlerQueryLookup:
         """Query-bound actions return error when query_id is not cached."""
         runtime_handler = make_handler(app)
 
-        response = await runtime_handler.actions[PluginToRuntimeAction.GET_BOT_UUID.value]({
-            'query_id': 'nonexistent-query',
-        })
+        response = await runtime_handler.actions[PluginToRuntimeAction.GET_BOT_UUID.value](
+            {
+                'query_id': 'nonexistent-query',
+            }
+        )
 
         assert response.code != 0
         assert 'nonexistent-query' in response.message
@@ -343,9 +353,11 @@ class TestHandlerQueryLookup:
         query = SimpleNamespace(variables={}, bot_uuid='test-bot-uuid')
         app.query_pool.cached_queries['existing-query'] = query
 
-        response = await runtime_handler.actions[PluginToRuntimeAction.GET_BOT_UUID.value]({
-            'query_id': 'existing-query',
-        })
+        response = await runtime_handler.actions[PluginToRuntimeAction.GET_BOT_UUID.value](
+            {
+                'query_id': 'existing-query',
+            }
+        )
 
         assert response.code == 0
         assert response.data == {'bot_uuid': 'test-bot-uuid'}

tests/unit_tests/plugin/test_handler_helpers.py

@@ -4,6 +4,7 @@ Tests cover:
 - _make_rag_error_response() helper function
 - RuntimeConnectionHandler cleanup_plugin_data method
 """
+
 from __future__ import annotations
 
 import pytest
@@ -23,7 +24,7 @@ class TestMakeRagErrorResponse:
         """Test basic error response creation."""
         handler = get_handler_module()
 
-        error = ValueError("test error message")
+        error = ValueError('test error message')
         result = handler._make_rag_error_response(error, 'TestError')
 
         # ActionResponse.error() returns code=1 (error status)
@@ -36,7 +37,7 @@ class TestMakeRagErrorResponse:
         """Test that error type is included in message."""
         handler = get_handler_module()
 
-        error = RuntimeError("something went wrong")
+        error = RuntimeError('something went wrong')
         result = handler._make_rag_error_response(error, 'VectorStoreError')
 
         assert '[VectorStoreError/RuntimeError]' in result.message
@@ -45,7 +46,7 @@ class TestMakeRagErrorResponse:
         """Test that extra context fields are included."""
         handler = get_handler_module()
 
-        error = Exception("embedding failed")
+        error = Exception('embedding failed')
         result = handler._make_rag_error_response(
             error,
             'EmbeddingError',
@@ -71,7 +72,7 @@ class TestMakeRagErrorResponse:
         """Test multiple context fields are comma separated."""
         handler = get_handler_module()
 
-        error = IOError("file not found")
+        error = IOError('file not found')
         result = handler._make_rag_error_response(
             error,
             'FileServiceError',
@@ -119,9 +120,7 @@ class TestCleanupPluginData:
         handler_instance = Mock(spec=handler_module.RuntimeConnectionHandler)
         handler_instance.ap = mock_app
 
-        await handler_module.RuntimeConnectionHandler.cleanup_plugin_data(
-            handler_instance, 'author', 'plugin-name'
-        )
+        await handler_module.RuntimeConnectionHandler.cleanup_plugin_data(handler_instance, 'author', 'plugin-name')
 
         # Should have at least 2 calls: one for settings, one for binary storage
-        assert mock_app.persistence_mgr.execute_async.call_count >= 2
+        assert mock_app.persistence_mgr.execute_async.call_count >= 2

tests/unit_tests/provider/conftest.py

@@ -88,7 +88,10 @@ class AnotherFakeRequester(requester.ProviderAPIRequester):
 
     async def invoke_llm(self, query, model, messages, funcs=None, extra_args={}, remove_think=False):
         import langbot_plugin.api.entities.builtin.provider.message as provider_message
-        return provider_message.Message(role='assistant', content=[provider_message.ContentElement(type='text', text='Another response')])
+
+        return provider_message.Message(
+            role='assistant', content=[provider_message.ContentElement(type='text', text='Another response')]
+        )
 
     async def invoke_rerank(self, model, query: str, documents: list, extra_args={}):
         """Return fake rerank results."""
@@ -135,8 +138,10 @@ def mock_app_for_modelmgr():
 
     # Fake persistence manager - returns empty results by default
     app.persistence_mgr = SimpleNamespace()
+
     async def default_execute(query):
         return _make_mock_result([])
+
     app.persistence_mgr.execute_async = AsyncMock(side_effect=default_execute)
 
     # Fake discover engine
@@ -165,9 +170,7 @@ def fake_requester_registry(mock_app_for_modelmgr):
     fake_component = _create_fake_component('fake-requester', FakeProviderAPIRequester)
     another_component = _create_fake_component('another-fake-requester', AnotherFakeRequester)
 
-    app.discover.get_components_by_kind = Mock(
-        return_value=[fake_component, another_component]
-    )
+    app.discover.get_components_by_kind = Mock(return_value=[fake_component, another_component])
 
     model_mgr = ModelManager(app)
     return model_mgr

tests/unit_tests/provider/runners/test_difysvapi_runner.py

@@ -26,7 +26,7 @@ class TestDifyExtractTextOutput:
                     'base-url': 'https://api.dify.ai',
                 }
             },
-            'output': {'misc': {}}
+            'output': {'misc': {}},
         }
 
         runner = DifyServiceAPIRunner(mock_app, pipeline_config)
@@ -111,7 +111,7 @@ class TestDifyRunnerConfigValidation:
                     'base-url': 'https://api.dify.ai',
                 }
             },
-            'output': {'misc': {}}
+            'output': {'misc': {}},
         }
 
         with pytest.raises(DifyAPIError, match='不支持'):
@@ -134,7 +134,7 @@ class TestDifyRunnerConfigValidation:
                         'base-url': 'https://api.dify.ai',
                     }
                 },
-                'output': {'misc': {}}
+                'output': {'misc': {}},
             }
 
             runner = DifyServiceAPIRunner(mock_app, pipeline_config)
@@ -160,10 +160,10 @@ class TestDifyRunnerInit:
                     'base-url': 'https://api.dify.ai',
                 }
             },
-            'output': {'misc': {}}
+            'output': {'misc': {}},
         }
 
         runner = DifyServiceAPIRunner(mock_app, pipeline_config)
 
         assert runner.pipeline_config == pipeline_config
-        assert runner.ap == mock_app
+        assert runner.ap == mock_app

tests/unit_tests/provider/test_litellm_convert_messages.py

@@ -0,0 +1,93 @@
+"""Unit tests for LiteLLMRequester._convert_messages.
+
+Focus: the content-part normalization that (a) converts image_base64 parts to
+the OpenAI image_url shape and (b) drops non-image file parts (file_base64 /
+file_url) which OpenAI-compatible chat models reject. The latter is essential
+for Voice/File attachments — including ones replayed from conversation history —
+since the agent consumes their bytes via the sandbox, not the model payload.
+"""
+
+import langbot_plugin.api.entities.builtin.provider.message as provider_message
+
+from langbot.pkg.provider.modelmgr.requesters.litellmchat import LiteLLMRequester
+
+
+def _make_requester() -> LiteLLMRequester:
+    # _convert_messages does not touch instance config, so bypass __init__.
+    return LiteLLMRequester.__new__(LiteLLMRequester)
+
+
+def test_convert_messages_drops_file_base64_part():
+    req = _make_requester()
+    msg = provider_message.Message(
+        role='user',
+        content=[
+            provider_message.ContentElement.from_text('analyze this audio'),
+            provider_message.ContentElement.from_file_base64('data:audio/wav;base64,AAAA', 'voice.wav'),
+        ],
+    )
+    out = req._convert_messages([msg])
+    parts = out[0]['content']
+    types = [p.get('type') for p in parts]
+    assert 'file_base64' not in types
+    assert types == ['text']
+    assert parts[0]['text'] == 'analyze this audio'
+
+
+def test_convert_messages_drops_file_url_part():
+    req = _make_requester()
+    msg = provider_message.Message(
+        role='user',
+        content=[
+            provider_message.ContentElement.from_text('here is a doc'),
+            provider_message.ContentElement.from_file_url('http://example.com/report.xlsx', 'report.xlsx'),
+        ],
+    )
+    out = req._convert_messages([msg])
+    types = [p.get('type') for p in out[0]['content']]
+    assert types == ['text']
+
+
+def test_convert_messages_keeps_image_and_converts_to_image_url():
+    req = _make_requester()
+    msg = provider_message.Message(
+        role='user',
+        content=[
+            provider_message.ContentElement.from_text('look'),
+            provider_message.ContentElement.from_image_base64('data:image/png;base64,AAAA'),
+        ],
+    )
+    out = req._convert_messages([msg])
+    parts = out[0]['content']
+    types = [p.get('type') for p in parts]
+    # image is preserved and reshaped to the OpenAI image_url form
+    assert types == ['text', 'image_url']
+    img_part = parts[1]
+    assert img_part['image_url'] == {'url': 'data:image/png;base64,AAAA'}
+    assert 'image_base64' not in img_part
+
+
+def test_convert_messages_mixed_history_strips_only_files():
+    req = _make_requester()
+    # Simulate replayed history: an old voice turn + a current text turn.
+    history_voice = provider_message.Message(
+        role='user',
+        content=[
+            provider_message.ContentElement.from_text('old audio turn'),
+            provider_message.ContentElement.from_file_base64('data:audio/wav;base64,BBBB', 'voice.wav'),
+        ],
+    )
+    current = provider_message.Message(
+        role='user',
+        content=[provider_message.ContentElement.from_text('now do the csv')],
+    )
+    out = req._convert_messages([history_voice, current])
+    assert [p.get('type') for p in out[0]['content']] == ['text']
+    assert [p.get('type') for p in out[1]['content']] == ['text']
+
+
+def test_convert_messages_plain_string_content_untouched():
+    req = _make_requester()
+    msg = provider_message.Message(role='user', content='just text')
+    out = req._convert_messages([msg])
+    assert out[0]['content'] == 'just text'

tests/unit_tests/provider/test_litellmchat.py

@@ -1062,9 +1062,7 @@ class TestScanModels:
 
         with patch.object(litellmchat.litellm, 'get_model_info') as mock_get_model_info:
             mock_get_model_info.side_effect = (
-                lambda model: {'max_input_tokens': 131072}
-                if model == 'moonshot/moonshot-v1-128k'
-                else {}
+                lambda model: {'max_input_tokens': 131072} if model == 'moonshot/moonshot-v1-128k' else {}
             )
 
             assert requester._safe_context_length('moonshot-v1-128k') == 131072

tests/unit_tests/provider/test_localagent_inbound_attachments.py

@@ -0,0 +1,146 @@
+"""Unit tests for LocalAgentRunner._inject_inbound_attachments.
+
+Covers the user -> sandbox attachment path added for the Box attachment
+round-trip:
+
+* materialized descriptors are stashed on the query and described to the model
+  via an appended text note (in-sandbox paths + outbox convention);
+* non-image file parts (file_base64 / file_url) are stripped from the user
+  message content because OpenAI-compatible chat models reject them, while
+  image and text parts are kept for vision models;
+* the helper is a no-op when the box service is unavailable or yields nothing,
+  and never raises into the chat turn on materialization failure.
+"""
+
+from __future__ import annotations
+
+from types import SimpleNamespace
+from unittest.mock import AsyncMock, Mock
+
+import pytest
+
+import langbot_plugin.api.entities.builtin.provider.message as provider_message
+
+from langbot.pkg.provider.runners.localagent import LocalAgentRunner
+
+
+def _make_runner(box_service) -> LocalAgentRunner:
+    runner = LocalAgentRunner.__new__(LocalAgentRunner)
+    runner.ap = SimpleNamespace(logger=Mock(), box_service=box_service)
+    return runner
+
+
+def _make_query():
+    return SimpleNamespace(variables={}, query_id='q-123')
+
+
+def _box_service(attachments):
+    svc = SimpleNamespace(
+        available=True,
+        OUTBOX_MOUNT_DIR='/outbox',
+        materialize_inbound_attachments=AsyncMock(return_value=attachments),
+    )
+    return svc
+
+
+@pytest.mark.asyncio
+async def test_inject_strips_file_parts_and_appends_note():
+    box = _box_service([{'type': 'Voice', 'path': '/inbox/q-123/voice.wav', 'size': 176000}])
+    runner = _make_runner(box)
+    query = _make_query()
+    user_message = provider_message.Message(
+        role='user',
+        content=[
+            provider_message.ContentElement.from_text('transcribe this'),
+            provider_message.ContentElement.from_file_base64('data:audio/wav;base64,AAAA', 'voice.wav'),
+        ],
+    )
+
+    await runner._inject_inbound_attachments(query, user_message)
+
+    types = [getattr(ce, 'type', None) for ce in user_message.content]
+    # file_base64 dropped; text kept; sandbox-path note appended as text
+    assert 'file_base64' not in types
+    assert types.count('text') == 2
+    note = user_message.content[-1].text
+    assert '/inbox/q-123/voice.wav' in note
+    assert '/outbox/q-123' in note
+    # descriptors stashed for downstream stages
+    assert query.variables['_sandbox_inbound_attachments'] == box.materialize_inbound_attachments.return_value
+
+
+@pytest.mark.asyncio
+async def test_inject_keeps_image_parts():
+    box = _box_service([{'type': 'Image', 'path': '/inbox/q-123/pic.png', 'size': 1234}])
+    runner = _make_runner(box)
+    query = _make_query()
+    user_message = provider_message.Message(
+        role='user',
+        content=[
+            provider_message.ContentElement.from_text('what is this'),
+            provider_message.ContentElement.from_image_base64('data:image/png;base64,iVBORw0K'),
+        ],
+    )
+
+    await runner._inject_inbound_attachments(query, user_message)
+
+    types = [getattr(ce, 'type', None) for ce in user_message.content]
+    assert 'image_base64' in types  # vision part preserved
+    assert types[-1] == 'text'  # note appended last
+
+
+@pytest.mark.asyncio
+async def test_inject_promotes_string_content_to_list_with_note():
+    box = _box_service([{'type': 'File', 'path': '/inbox/q-123/data.csv', 'size': 42}])
+    runner = _make_runner(box)
+    query = _make_query()
+    user_message = provider_message.Message(role='user', content='clean this csv')
+
+    await runner._inject_inbound_attachments(query, user_message)
+
+    assert isinstance(user_message.content, list)
+    assert [getattr(ce, 'type', None) for ce in user_message.content] == ['text', 'text']
+    assert user_message.content[0].text == 'clean this csv'
+    assert '/inbox/q-123/data.csv' in user_message.content[1].text
+
+
+@pytest.mark.asyncio
+async def test_inject_noop_without_box_service():
+    runner = _make_runner(box_service=None)
+    query = _make_query()
+    user_message = provider_message.Message(role='user', content='hello')
+
+    await runner._inject_inbound_attachments(query, user_message)
+
+    assert user_message.content == 'hello'
+    assert '_sandbox_inbound_attachments' not in query.variables
+
+
+@pytest.mark.asyncio
+async def test_inject_noop_when_no_attachments():
+    box = _box_service([])
+    runner = _make_runner(box)
+    query = _make_query()
+    user_message = provider_message.Message(role='user', content='hello')
+
+    await runner._inject_inbound_attachments(query, user_message)
+
+    assert user_message.content == 'hello'
+    assert '_sandbox_inbound_attachments' not in query.variables
+
+
+@pytest.mark.asyncio
+async def test_inject_swallows_materialization_error():
+    box = SimpleNamespace(
+        available=True,
+        OUTBOX_MOUNT_DIR='/outbox',
+        materialize_inbound_attachments=AsyncMock(side_effect=RuntimeError('disk full')),
+    )
+    runner = _make_runner(box)
+    query = _make_query()
+    user_message = provider_message.Message(role='user', content='hello')
+
+    # must not raise
+    await runner._inject_inbound_attachments(query, user_message)
+    assert user_message.content == 'hello'
+    runner.ap.logger.warning.assert_called_once()

tests/unit_tests/provider/test_model_manager.py

@@ -635,7 +635,9 @@ async def test_model_manager_reload_provider_not_found(fake_requester_registry):
 
 
 @pytest.mark.asyncio
-async def test_model_manager_load_llm_model_with_provider(fake_requester_registry, fake_persistence_data, runtime_provider):
+async def test_model_manager_load_llm_model_with_provider(
+    fake_requester_registry, fake_persistence_data, runtime_provider
+):
     """Test ModelManager.load_llm_model_with_provider creates RuntimeLLMModel."""
     model_mgr = fake_requester_registry
 
@@ -648,7 +650,9 @@ async def test_model_manager_load_llm_model_with_provider(fake_requester_registr
 
 
 @pytest.mark.asyncio
-async def test_model_manager_load_llm_model_with_provider_from_row(fake_requester_registry, fake_persistence_data, runtime_provider):
+async def test_model_manager_load_llm_model_with_provider_from_row(
+    fake_requester_registry, fake_persistence_data, runtime_provider
+):
     """Test ModelManager.load_llm_model_with_provider handles Row objects."""
     model_mgr = fake_requester_registry
 
@@ -661,7 +665,9 @@ async def test_model_manager_load_llm_model_with_provider_from_row(fake_requeste
 
 
 @pytest.mark.asyncio
-async def test_model_manager_load_embedding_model_with_provider(fake_requester_registry, fake_persistence_data, runtime_provider):
+async def test_model_manager_load_embedding_model_with_provider(
+    fake_requester_registry, fake_persistence_data, runtime_provider
+):
     """Test ModelManager.load_embedding_model_with_provider creates RuntimeEmbeddingModel."""
     model_mgr = fake_requester_registry
 

tests/unit_tests/provider/test_requester_base.py

@@ -43,6 +43,7 @@ class TestableRequester(requester.ProviderAPIRequester):
         remove_think=False,
     ):
         import langbot_plugin.api.entities.builtin.provider.message as provider_message
+
         return provider_message.Message(
             role='assistant',
             content=[provider_message.ContentElement(type='text', text='Testable response')],
@@ -289,7 +290,9 @@ async def test_runtime_provider_invoke_llm_delegates(runtime_provider, runtime_l
         current_stage_name=None,
     )
 
-    messages = [provider_message.Message(role='user', content=[provider_message.ContentElement(type='text', text='Hello')])]
+    messages = [
+        provider_message.Message(role='user', content=[provider_message.ContentElement(type='text', text='Hello')])
+    ]
 
     result = await provider.invoke_llm(query, runtime_llm_model, messages)
 
@@ -330,7 +333,9 @@ async def test_runtime_provider_invoke_llm_stream_yields_chunks(runtime_provider
         current_stage_name=None,
     )
 
-    messages = [provider_message.Message(role='user', content=[provider_message.ContentElement(type='text', text='Hello')])]
+    messages = [
+        provider_message.Message(role='user', content=[provider_message.ContentElement(type='text', text='Hello')])
+    ]
 
     chunks = []
     async for chunk in provider.invoke_llm_stream(query, runtime_llm_model, messages):
@@ -576,7 +581,9 @@ async def test_runtime_provider_invoke_llm_propagates_error(mock_app_for_modelmg
         current_stage_name=None,
     )
 
-    messages = [provider_message.Message(role='user', content=[provider_message.ContentElement(type='text', text='Hello')])]
+    messages = [
+        provider_message.Message(role='user', content=[provider_message.ContentElement(type='text', text='Hello')])
+    ]
 
     with pytest.raises(RequesterError):
         await provider.invoke_llm(query, model, messages)

tests/unit_tests/provider/test_session_manager.py

@@ -5,6 +5,7 @@ Tests cover:
 - Conversation creation with prompts
 - Session concurrency semaphore
 """
+
 from __future__ import annotations
 
 import pytest
@@ -60,11 +61,7 @@ class TestSessionManagerGetSession:
         """Create mock app with instance config."""
         mock_app = Mock()
         mock_app.instance_config = Mock()
-        mock_app.instance_config.data = {
-            'concurrency': {
-                'session': 5
-            }
-        }
+        mock_app.instance_config.data = {'concurrency': {'session': 5}}
         return mock_app
 
     @pytest.fixture
@@ -173,11 +170,7 @@ class TestSessionManagerGetConversation:
         """Create mock app with instance config."""
         mock_app = Mock()
         mock_app.instance_config = Mock()
-        mock_app.instance_config.data = {
-            'concurrency': {
-                'session': 5
-            }
-        }
+        mock_app.instance_config.data = {'concurrency': {'session': 5}}
         return mock_app
 
     @pytest.fixture
@@ -201,17 +194,13 @@ class TestSessionManagerGetConversation:
         return query
 
     @pytest.mark.asyncio
-    async def test_creates_conversation_with_prompt(
-        self, mock_app_with_config, sample_query, sample_session
-    ):
+    async def test_creates_conversation_with_prompt(self, mock_app_with_config, sample_query, sample_session):
         """Test that get_conversation creates conversation with prompt."""
         sessionmgr = get_session_module()
 
         manager = sessionmgr.SessionManager(mock_app_with_config)
 
-        prompt_config = [
-            {'role': 'system', 'content': 'You are a helpful assistant.'}
-        ]
+        prompt_config = [{'role': 'system', 'content': 'You are a helpful assistant.'}]
         pipeline_uuid = 'pipeline-123'
         bot_uuid = 'bot-123'
 
@@ -234,21 +223,15 @@ class TestSessionManagerGetConversation:
 
         manager = sessionmgr.SessionManager(mock_app_with_config)
 
-        prompt_config = [
-            {'role': 'system', 'content': 'You are a helpful assistant.'}
-        ]
+        prompt_config = [{'role': 'system', 'content': 'You are a helpful assistant.'}]
         pipeline_uuid = 'pipeline-123'
         bot_uuid = 'bot-123'
 
         # First call creates conversation
-        conv1 = await manager.get_conversation(
-            sample_query, sample_session, prompt_config, pipeline_uuid, bot_uuid
-        )
+        conv1 = await manager.get_conversation(sample_query, sample_session, prompt_config, pipeline_uuid, bot_uuid)
 
         # Second call with same pipeline should return same conversation
-        conv2 = await manager.get_conversation(
-            sample_query, sample_session, prompt_config, pipeline_uuid, bot_uuid
-        )
+        conv2 = await manager.get_conversation(sample_query, sample_session, prompt_config, pipeline_uuid, bot_uuid)
 
         assert conv1 is conv2
         assert len(sample_session.conversations) == 1
@@ -262,36 +245,26 @@ class TestSessionManagerGetConversation:
 
         manager = sessionmgr.SessionManager(mock_app_with_config)
 
-        prompt_config = [
-            {'role': 'system', 'content': 'You are a helpful assistant.'}
-        ]
+        prompt_config = [{'role': 'system', 'content': 'You are a helpful assistant.'}]
 
         # First call with pipeline1
-        conv1 = await manager.get_conversation(
-            sample_query, sample_session, prompt_config, 'pipeline-1', 'bot-1'
-        )
+        conv1 = await manager.get_conversation(sample_query, sample_session, prompt_config, 'pipeline-1', 'bot-1')
 
         # Second call with different pipeline should create new conversation
-        conv2 = await manager.get_conversation(
-            sample_query, sample_session, prompt_config, 'pipeline-2', 'bot-2'
-        )
+        conv2 = await manager.get_conversation(sample_query, sample_session, prompt_config, 'pipeline-2', 'bot-2')
 
         assert conv1 is not conv2
         assert len(sample_session.conversations) == 2
         assert sample_session.using_conversation is conv2
 
     @pytest.mark.asyncio
-    async def test_conversation_has_empty_messages(
-        self, mock_app_with_config, sample_query, sample_session
-    ):
+    async def test_conversation_has_empty_messages(self, mock_app_with_config, sample_query, sample_session):
         """Test that created conversation has empty messages list."""
         sessionmgr = get_session_module()
 
         manager = sessionmgr.SessionManager(mock_app_with_config)
 
-        prompt_config = [
-            {'role': 'system', 'content': 'You are a helpful assistant.'}
-        ]
+        prompt_config = [{'role': 'system', 'content': 'You are a helpful assistant.'}]
 
         conversation = await manager.get_conversation(
             sample_query, sample_session, prompt_config, 'pipeline-123', 'bot-123'
@@ -300,22 +273,17 @@ class TestSessionManagerGetConversation:
         assert conversation.messages == []
 
     @pytest.mark.asyncio
-    async def test_prompt_messages_from_config(
-        self, mock_app_with_config, sample_query, sample_session
-    ):
+    async def test_prompt_messages_from_config(self, mock_app_with_config, sample_query, sample_session):
         """Test that prompt messages are created from prompt_config."""
         sessionmgr = get_session_module()
 
         manager = sessionmgr.SessionManager(mock_app_with_config)
 
-        prompt_config = [
-            {'role': 'system', 'content': 'System message'},
-            {'role': 'user', 'content': 'User message'}
-        ]
+        prompt_config = [{'role': 'system', 'content': 'System message'}, {'role': 'user', 'content': 'User message'}]
 
         conversation = await manager.get_conversation(
             sample_query, sample_session, prompt_config, 'pipeline-123', 'bot-123'
         )
 
         assert conversation.prompt.name == 'default'
-        assert len(conversation.prompt.messages) == 2
+        assert len(conversation.prompt.messages) == 2

tests/unit_tests/provider/test_tool_manager.py

@@ -136,6 +136,7 @@ class TestToolManagerSchemaGeneration:
             assert 'description' in func
             assert 'parameters' in func
 
+
 class TestToolManagerExecuteFuncCall:
     """Tests for execute_func_call method."""
 

tests/unit_tests/rag/test_i18n_conversion.py

@@ -3,6 +3,7 @@
 Tests cover:
 - _to_i18n_name() static method
 """
+
 from __future__ import annotations
 
 from importlib import import_module
@@ -60,4 +61,4 @@ class TestToI18nName:
         kbmgr = get_kbmgr_module()
         input_dict = {'en_US': 'English', 'extra_key': 'extra_value'}
         result = kbmgr.RAGManager._to_i18n_name(input_dict)
-        assert result == {'en_US': 'English', 'extra_key': 'extra_value'}
+        assert result == {'en_US': 'English', 'extra_key': 'extra_value'}

tests/unit_tests/rag/test_kbmgr.py

@@ -6,6 +6,7 @@ Tests cover:
 - Knowledge engine enrichment
 - KB loading and removal
 """
+
 from __future__ import annotations
 
 import pytest
@@ -101,13 +102,9 @@ class TestRAGManagerCreateKnowledgeBase:
         rag_module = get_rag_module()
         mock_app = create_mock_app()
 
-        mock_app.plugin_connector.list_knowledge_engines = AsyncMock(
-            return_value=[{'plugin_id': 'author/engine'}]
-        )
+        mock_app.plugin_connector.list_knowledge_engines = AsyncMock(return_value=[{'plugin_id': 'author/engine'}])
         mock_app.persistence_mgr.execute_async = AsyncMock()
-        mock_app.plugin_connector.rag_on_kb_create = AsyncMock(
-            side_effect=Exception('Plugin error')
-        )
+        mock_app.plugin_connector.rag_on_kb_create = AsyncMock(side_effect=Exception('Plugin error'))
 
         manager = rag_module.RAGManager(mock_app)
 
@@ -128,9 +125,7 @@ class TestRAGManagerCreateKnowledgeBase:
         rag_module = get_rag_module()
         mock_app = create_mock_app()
 
-        mock_app.plugin_connector.list_knowledge_engines = AsyncMock(
-            return_value=[{'plugin_id': 'author/engine'}]
-        )
+        mock_app.plugin_connector.list_knowledge_engines = AsyncMock(return_value=[{'plugin_id': 'author/engine'}])
         mock_app.persistence_mgr.execute_async = AsyncMock()
         mock_app.plugin_connector.rag_on_kb_create = AsyncMock()
 
@@ -206,9 +201,7 @@ class TestRuntimeKnowledgeBaseOnKBCreate:
         mock_app = create_mock_app()
         mock_kb = create_mock_kb_entity()
 
-        mock_app.plugin_connector.rag_on_kb_create = AsyncMock(
-            side_effect=Exception('Plugin failed')
-        )
+        mock_app.plugin_connector.rag_on_kb_create = AsyncMock(side_effect=Exception('Plugin failed'))
 
         runtime_kb = rag_module.RuntimeKnowledgeBase(mock_app, mock_kb)
 
@@ -245,9 +238,7 @@ class TestRuntimeKnowledgeBaseIngestDocument:
         mock_app = create_mock_app()
         mock_kb = create_mock_kb_entity()
 
-        mock_app.plugin_connector.call_rag_ingest = AsyncMock(
-            return_value={'status': 'success'}
-        )
+        mock_app.plugin_connector.call_rag_ingest = AsyncMock(return_value={'status': 'success'})
 
         runtime_kb = rag_module.RuntimeKnowledgeBase(mock_app, mock_kb)
 
@@ -304,14 +295,10 @@ class TestRAGManagerLoadKnowledgeBasesFromDB:
         # KB that will cause initialize to fail
         mock_kb = create_mock_kb_entity()
 
-        mock_app.persistence_mgr.execute_async = AsyncMock(
-            return_value=Mock(all=Mock(return_value=[mock_kb]))
-        )
+        mock_app.persistence_mgr.execute_async = AsyncMock(return_value=Mock(all=Mock(return_value=[mock_kb])))
 
         # Make initialize fail by having plugin_connector throw error
-        mock_app.plugin_connector.rag_on_kb_create = AsyncMock(
-            side_effect=Exception('Init failed')
-        )
+        mock_app.plugin_connector.rag_on_kb_create = AsyncMock(side_effect=Exception('Init failed'))
 
         manager = rag_module.RAGManager(mock_app)
         # Should not raise - errors are caught
@@ -411,9 +398,7 @@ class TestRuntimeKnowledgeBaseRetrieve:
         mock_kb = create_mock_kb_entity()
         mock_kb.retrieval_settings = {}
 
-        mock_app.plugin_connector.call_rag_retrieve = AsyncMock(
-            return_value={'results': []}
-        )
+        mock_app.plugin_connector.call_rag_retrieve = AsyncMock(return_value={'results': []})
 
         runtime_kb = rag_module.RuntimeKnowledgeBase(mock_app, mock_kb)
 
@@ -682,9 +667,7 @@ class TestRAGManagerGetAllDetails:
         """Test returns empty list when no knowledge bases."""
         rag_module = get_rag_module()
         mock_app = create_mock_app()
-        mock_app.persistence_mgr.execute_async = AsyncMock(
-            return_value=Mock(all=Mock(return_value=[]))
-        )
+        mock_app.persistence_mgr.execute_async = AsyncMock(return_value=Mock(all=Mock(return_value=[])))
 
         manager = rag_module.RAGManager(mock_app)
         result = await manager.get_all_knowledge_base_details()
@@ -699,9 +682,7 @@ class TestRAGManagerGetAllDetails:
 
         # Mock DB result
         mock_kb_row = Mock()
-        mock_app.persistence_mgr.execute_async = AsyncMock(
-            return_value=Mock(all=Mock(return_value=[mock_kb_row]))
-        )
+        mock_app.persistence_mgr.execute_async = AsyncMock(return_value=Mock(all=Mock(return_value=[mock_kb_row])))
         mock_app.persistence_mgr.serialize_model = Mock(
             return_value={'uuid': 'kb1', 'knowledge_engine_plugin_id': 'author/engine'}
         )
@@ -724,9 +705,7 @@ class TestRAGManagerGetDetails:
         """Test returns None when KB doesn't exist."""
         rag_module = get_rag_module()
         mock_app = create_mock_app()
-        mock_app.persistence_mgr.execute_async = AsyncMock(
-            return_value=Mock(first=Mock(return_value=None))
-        )
+        mock_app.persistence_mgr.execute_async = AsyncMock(return_value=Mock(first=Mock(return_value=None)))
 
         manager = rag_module.RAGManager(mock_app)
         result = await manager.get_knowledge_base_details('nonexistent')
@@ -740,9 +719,7 @@ class TestRAGManagerGetDetails:
         mock_app = create_mock_app()
 
         mock_kb_row = Mock()
-        mock_app.persistence_mgr.execute_async = AsyncMock(
-            return_value=Mock(first=Mock(return_value=mock_kb_row))
-        )
+        mock_app.persistence_mgr.execute_async = AsyncMock(return_value=Mock(first=Mock(return_value=mock_kb_row)))
         mock_app.persistence_mgr.serialize_model = Mock(
             return_value={'uuid': 'kb1', 'knowledge_engine_plugin_id': 'author/engine'}
         )
@@ -791,4 +768,4 @@ class TestRAGManagerLoadKnowledgeBase:
 
         await manager.load_knowledge_base(kb_dict)
 
-        assert 'kb-uuid' in manager.knowledge_bases
+        assert 'kb-uuid' in manager.knowledge_bases

tests/unit_tests/rag/test_runtime_service.py

@@ -121,10 +121,12 @@ class TestRAGRuntimeServiceVectorSearch:
         """Create mock app."""
         mock_app = MagicMock()
         mock_app.vector_db_mgr = MagicMock()
-        mock_app.vector_db_mgr.search = AsyncMock(return_value=[
-            {'id': 'id1', 'distance': 0.1, 'metadata': {'file_id': 'abc'}},
-            {'id': 'id2', 'distance': 0.2, 'metadata': {'file_id': 'def'}},
-        ])
+        mock_app.vector_db_mgr.search = AsyncMock(
+            return_value=[
+                {'id': 'id1', 'distance': 0.1, 'metadata': {'file_id': 'abc'}},
+                {'id': 'id2', 'distance': 0.2, 'metadata': {'file_id': 'def'}},
+            ]
+        )
         return mock_app
 
     def _make_rag_import_mocks(self):
@@ -301,10 +303,7 @@ class TestRAGRuntimeServiceVectorList:
         mock_app = MagicMock()
         mock_app.vector_db_mgr = MagicMock()
         mock_app.vector_db_mgr.list_by_filter = AsyncMock(
-            return_value=(
-                [{'id': 'id1', 'metadata': {'file_id': 'abc'}}],
-                10
-            )
+            return_value=([{'id': 'id1', 'metadata': {'file_id': 'abc'}}], 10)
         )
         return mock_app
 

tests/unit_tests/storage/test_localstorage_path_traversal.py

@@ -21,8 +21,8 @@ from langbot.pkg.storage.providers.localstorage import LocalStorageProvider
 @pytest.fixture
 def storage_provider(tmp_path):
     """Create a LocalStorageProvider with a temporary storage path."""
-    storage_path = str(tmp_path / "storage")
-    with patch("langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH", storage_path):
+    storage_path = str(tmp_path / 'storage')
+    with patch('langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH', storage_path):
         mock_app = Mock()
         provider = LocalStorageProvider(mock_app)
         yield provider, storage_path
@@ -35,15 +35,15 @@ class TestPathTraversalPrevention:
     async def test_absolute_path_save_rejected(self, storage_provider, tmp_path):
         """Saving with an absolute path key must be blocked."""
         provider, storage_path = storage_provider
-        target_file = str(tmp_path / "pwned.txt")
+        target_file = str(tmp_path / 'pwned.txt')
 
-        with patch("langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH", storage_path):
+        with patch('langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH', storage_path):
             with pytest.raises((ValueError, PermissionError)):
-                await provider.save(target_file, b"malicious content")
+                await provider.save(target_file, b'malicious content')
 
         # The file must NOT exist outside the storage directory
         assert not os.path.exists(target_file), (
-            f"Path traversal succeeded: file was written outside storage to {target_file}"
+            f'Path traversal succeeded: file was written outside storage to {target_file}'
         )
 
     @pytest.mark.asyncio
@@ -52,32 +52,28 @@ class TestPathTraversalPrevention:
         provider, storage_path = storage_provider
 
         # Create a file outside the storage directory
-        target_file = str(tmp_path / "secret.txt")
-        with open(target_file, "wb") as f:
-            f.write(b"secret data")
+        target_file = str(tmp_path / 'secret.txt')
+        with open(target_file, 'wb') as f:
+            f.write(b'secret data')
 
-        with patch("langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH", storage_path):
+        with patch('langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH', storage_path):
             with pytest.raises((ValueError, PermissionError, FileNotFoundError)):
                 data = await provider.load(target_file)
-                assert data != b"secret data", (
-                    "Path traversal succeeded: read file outside storage"
-                )
+                assert data != b'secret data', 'Path traversal succeeded: read file outside storage'
 
     @pytest.mark.asyncio
     async def test_absolute_path_exists_rejected(self, storage_provider, tmp_path):
         """Exists check with an absolute path key must be blocked or return False."""
         provider, storage_path = storage_provider
 
-        target_file = str(tmp_path / "check_me.txt")
-        with open(target_file, "wb") as f:
-            f.write(b"data")
+        target_file = str(tmp_path / 'check_me.txt')
+        with open(target_file, 'wb') as f:
+            f.write(b'data')
 
-        with patch("langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH", storage_path):
+        with patch('langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH', storage_path):
             try:
                 result = await provider.exists(target_file)
-                assert result is False, (
-                    "Path traversal succeeded: exists() returned True for file outside storage"
-                )
+                assert result is False, 'Path traversal succeeded: exists() returned True for file outside storage'
             except (ValueError, PermissionError):
                 pass  # Expected
 
@@ -86,28 +82,26 @@ class TestPathTraversalPrevention:
         """Deleting with an absolute path key must be blocked."""
         provider, storage_path = storage_provider
 
-        target_file = str(tmp_path / "do_not_delete.txt")
-        with open(target_file, "wb") as f:
-            f.write(b"important data")
+        target_file = str(tmp_path / 'do_not_delete.txt')
+        with open(target_file, 'wb') as f:
+            f.write(b'important data')
 
-        with patch("langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH", storage_path):
+        with patch('langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH', storage_path):
             with pytest.raises((ValueError, PermissionError, FileNotFoundError)):
                 await provider.delete(target_file)
 
-        assert os.path.exists(target_file), (
-            "Path traversal succeeded: file outside storage was deleted"
-        )
+        assert os.path.exists(target_file), 'Path traversal succeeded: file outside storage was deleted'
 
     @pytest.mark.asyncio
     async def test_absolute_path_size_rejected(self, storage_provider, tmp_path):
         """Size check with an absolute path key must be blocked."""
         provider, storage_path = storage_provider
 
-        target_file = str(tmp_path / "measure_me.txt")
-        with open(target_file, "wb") as f:
-            f.write(b"some data")
+        target_file = str(tmp_path / 'measure_me.txt')
+        with open(target_file, 'wb') as f:
+            f.write(b'some data')
 
-        with patch("langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH", storage_path):
+        with patch('langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH', storage_path):
             with pytest.raises((ValueError, PermissionError, FileNotFoundError)):
                 await provider.size(target_file)
 
@@ -116,41 +110,39 @@ class TestPathTraversalPrevention:
         """Relative path traversal with '..' must be blocked."""
         provider, storage_path = storage_provider
 
-        target_file = str(tmp_path / "above_storage.txt")
-        with open(target_file, "wb") as f:
-            f.write(b"above storage secret")
+        target_file = str(tmp_path / 'above_storage.txt')
+        with open(target_file, 'wb') as f:
+            f.write(b'above storage secret')
 
-        with patch("langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH", storage_path):
-            relative_key = os.path.join("..", "above_storage.txt")
+        with patch('langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH', storage_path):
+            relative_key = os.path.join('..', 'above_storage.txt')
             with pytest.raises((ValueError, PermissionError, FileNotFoundError)):
                 data = await provider.load(relative_key)
-                assert data != b"above storage secret"
+                assert data != b'above storage secret'
 
     @pytest.mark.asyncio
     async def test_delete_dir_recursive_traversal_rejected(self, storage_provider, tmp_path):
         """delete_dir_recursive with traversal path must be blocked."""
         provider, storage_path = storage_provider
 
-        outside_dir = tmp_path / "outside_dir"
+        outside_dir = tmp_path / 'outside_dir'
         outside_dir.mkdir()
-        (outside_dir / "file.txt").write_text("important")
+        (outside_dir / 'file.txt').write_text('important')
 
-        with patch("langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH", storage_path):
+        with patch('langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH', storage_path):
             with pytest.raises((ValueError, PermissionError)):
                 await provider.delete_dir_recursive(str(outside_dir))
 
-        assert outside_dir.exists(), (
-            "Path traversal succeeded: directory outside storage was deleted"
-        )
+        assert outside_dir.exists(), 'Path traversal succeeded: directory outside storage was deleted'
 
     @pytest.mark.asyncio
     async def test_legitimate_key_works(self, storage_provider):
         """Normal keys without traversal must still work."""
         provider, storage_path = storage_provider
 
-        with patch("langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH", storage_path):
-            key = "test_image_abc123.png"
-            content = b"PNG image data"
+        with patch('langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH', storage_path):
+            key = 'test_image_abc123.png'
+            content = b'PNG image data'
 
             await provider.save(key, content)
             assert await provider.exists(key) is True
@@ -166,9 +158,9 @@ class TestPathTraversalPrevention:
         """Keys with legitimate subdirectories must still work."""
         provider, storage_path = storage_provider
 
-        with patch("langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH", storage_path):
-            key = "bot_log_images/img_001.png"
-            content = b"PNG image data"
+        with patch('langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH', storage_path):
+            key = 'bot_log_images/img_001.png'
+            content = b'PNG image data'
 
             await provider.save(key, content)
             assert await provider.exists(key) is True
@@ -181,33 +173,33 @@ class TestPathTraversalPrevention:
         """delete_dir_recursive should handle non-existing directories gracefully."""
         provider, storage_path = storage_provider
 
-        with patch("langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH", storage_path):
+        with patch('langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH', storage_path):
             # Try to delete a non-existing directory - should not raise
-            await provider.delete_dir_recursive("nonexistent_dir")
+            await provider.delete_dir_recursive('nonexistent_dir')
 
     @pytest.mark.asyncio
     async def test_delete_dir_recursive_with_files(self, storage_provider):
         """delete_dir_recursive should delete directory with files inside."""
         provider, storage_path = storage_provider
 
-        with patch("langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH", storage_path):
+        with patch('langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH', storage_path):
             # Create a directory with files
-            key1 = "test_dir/file1.txt"
-            key2 = "test_dir/file2.txt"
-            await provider.save(key1, b"content1")
-            await provider.save(key2, b"content2")
+            key1 = 'test_dir/file1.txt'
+            key2 = 'test_dir/file2.txt'
+            await provider.save(key1, b'content1')
+            await provider.save(key2, b'content2')
 
             # Verify files exist
             assert await provider.exists(key1)
             assert await provider.exists(key2)
 
             # Delete directory recursively
-            await provider.delete_dir_recursive("test_dir")
+            await provider.delete_dir_recursive('test_dir')
 
             # Verify files no longer exist
             assert not await provider.exists(key1)
             assert not await provider.exists(key2)
 
 
-if __name__ == "__main__":
-    pytest.main([__file__, "-v"])
+if __name__ == '__main__':
+    pytest.main([__file__, '-v'])

tests/unit_tests/storage/test_s3storage.py

@@ -8,6 +8,7 @@ Tests cover:
 
 Uses moto library to mock AWS S3 service.
 """
+
 from __future__ import annotations
 
 import pytest
@@ -44,8 +45,10 @@ def mock_app_with_s3_config():
 def s3_mock():
     """Set up moto S3 mock context."""
     from moto import mock_aws
+
     with mock_aws():
         import boto3
+
         # Create bucket for tests that need pre-existing bucket
         s3 = boto3.client('s3', region_name='us-east-1')
         yield s3
@@ -325,4 +328,4 @@ class TestS3StorageProviderErrorHandling:
         await provider.initialize()
 
         with pytest.raises(Exception):
-            await provider.size('nonexistent.txt')
+            await provider.size('nonexistent.txt')

tests/unit_tests/storage/test_storage_manager.py

@@ -31,7 +31,7 @@ class TestStorageMgr:
 
         storage_mgr = StorageMgr(mock_app)
 
-        with patch.object(LocalStorageProvider, "initialize", new_callable=AsyncMock):
+        with patch.object(LocalStorageProvider, 'initialize', new_callable=AsyncMock):
             await storage_mgr.initialize()
             assert isinstance(storage_mgr.storage_provider, LocalStorageProvider)
             mock_app.logger.info.assert_called()
@@ -41,12 +41,12 @@ class TestStorageMgr:
         """Should use local storage when explicitly configured."""
         mock_app = Mock()
         mock_app.instance_config = Mock()
-        mock_app.instance_config.data = {"storage": {"use": "local"}}
+        mock_app.instance_config.data = {'storage': {'use': 'local'}}
         mock_app.logger = Mock()
 
         storage_mgr = StorageMgr(mock_app)
 
-        with patch.object(LocalStorageProvider, "initialize", new_callable=AsyncMock):
+        with patch.object(LocalStorageProvider, 'initialize', new_callable=AsyncMock):
             await storage_mgr.initialize()
             assert isinstance(storage_mgr.storage_provider, LocalStorageProvider)
 
@@ -55,14 +55,12 @@ class TestStorageMgr:
         """Should use S3 storage when configured."""
         mock_app = Mock()
         mock_app.instance_config = Mock()
-        mock_app.instance_config.data = {
-            "storage": {"use": "s3", "s3": {"endpoint_url": "https://s3.amazonaws.com"}}
-        }
+        mock_app.instance_config.data = {'storage': {'use': 's3', 's3': {'endpoint_url': 'https://s3.amazonaws.com'}}}
         mock_app.logger = Mock()
 
         storage_mgr = StorageMgr(mock_app)
 
-        with patch.object(S3StorageProvider, "initialize", new_callable=AsyncMock):
+        with patch.object(S3StorageProvider, 'initialize', new_callable=AsyncMock):
             await storage_mgr.initialize()
             assert isinstance(storage_mgr.storage_provider, S3StorageProvider)
 
@@ -71,12 +69,12 @@ class TestStorageMgr:
         """Should default to local storage for invalid storage type."""
         mock_app = Mock()
         mock_app.instance_config = Mock()
-        mock_app.instance_config.data = {"storage": {"use": "invalid_type"}}
+        mock_app.instance_config.data = {'storage': {'use': 'invalid_type'}}
         mock_app.logger = Mock()
 
         storage_mgr = StorageMgr(mock_app)
 
-        with patch.object(LocalStorageProvider, "initialize", new_callable=AsyncMock):
+        with patch.object(LocalStorageProvider, 'initialize', new_callable=AsyncMock):
             await storage_mgr.initialize()
             assert isinstance(storage_mgr.storage_provider, LocalStorageProvider)
 
@@ -90,9 +88,7 @@ class TestStorageMgr:
 
         storage_mgr = StorageMgr(mock_app)
 
-        with patch.object(
-            LocalStorageProvider, "initialize", new_callable=AsyncMock
-        ) as mock_init:
+        with patch.object(LocalStorageProvider, 'initialize', new_callable=AsyncMock) as mock_init:
             await storage_mgr.initialize()
             mock_init.assert_called_once()
 
@@ -105,8 +101,8 @@ class TestStorageProviderBase:
         mock_app = Mock()
 
         # Use LocalStorageProvider as concrete implementation
-        with patch("os.path.exists", return_value=True):
-            with patch("os.makedirs"):
+        with patch('os.path.exists', return_value=True):
+            with patch('os.makedirs'):
                 provider = LocalStorageProvider(mock_app)
                 assert provider.ap == mock_app
 
@@ -115,12 +111,12 @@ class TestStorageProviderBase:
         """Provider base initialize should be callable and do nothing."""
         mock_app = Mock()
 
-        with patch("os.path.exists", return_value=True):
-            with patch("os.makedirs"):
+        with patch('os.path.exists', return_value=True):
+            with patch('os.makedirs'):
                 provider = LocalStorageProvider(mock_app)
                 # Initialize should not raise
                 await provider.initialize()
 
 
-if __name__ == "__main__":
-    pytest.main([__file__, "-v"])
+if __name__ == '__main__':
+    pytest.main([__file__, '-v'])

tests/unit_tests/telemetry/test_telemetry.py

@@ -8,6 +8,7 @@ Tests cover:
 - HTTP request success/failure scenarios
 - Source code bug: send_tasks should be instance variable
 """
+
 from __future__ import annotations
 
 import pytest
@@ -38,6 +39,7 @@ class TestTelemetryManagerInit:
         manager = telemetry.TelemetryManager(mock_app)
         assert manager.telemetry_config == {}
 
+
 class TestTelemetryManagerInitialize:
     """Tests for initialize() method."""
 
@@ -218,7 +220,7 @@ class TestPayloadSanitization:
 
         # All null string fields should be empty strings
         for field in ['adapter', 'runner', 'runner_category', 'model_name', 'version', 'edition', 'error', 'timestamp']:
-            assert result[field] == '', f"Field {field} should be empty string, got {result[field]}"
+            assert result[field] == '', f'Field {field} should be empty string, got {result[field]}'
 
     @pytest.mark.asyncio
     async def test_sanitize_string_fields_preserve_values(self):
@@ -418,9 +420,7 @@ class TestHTTPScenarios:
         manager.telemetry_config = {'url': 'https://example.com'}
 
         mock_response = Mock(
-            status_code=200,
-            text='{"code": 0, "msg": "success"}',
-            json=Mock(return_value={'code': 0, 'msg': 'success'})
+            status_code=200, text='{"code": 0, "msg": "success"}', json=Mock(return_value={'code': 0, 'msg': 'success'})
         )
 
         mock_client = Mock()
@@ -448,9 +448,7 @@ class TestHTTPScenarios:
         manager.telemetry_config = {'url': 'https://example.com'}
 
         mock_response = Mock(
-            status_code=500,
-            text='Internal Server Error',
-            json=Mock(return_value={'code': 500, 'msg': 'error'})
+            status_code=500, text='Internal Server Error', json=Mock(return_value={'code': 500, 'msg': 'error'})
         )
 
         mock_client = Mock()
@@ -478,7 +476,7 @@ class TestHTTPScenarios:
         mock_response = Mock(
             status_code=200,
             text='{"code": 400, "msg": "Bad Request"}',
-            json=Mock(return_value={'code': 400, 'msg': 'Bad Request'})
+            json=Mock(return_value={'code': 400, 'msg': 'Bad Request'}),
         )
 
         mock_client = Mock()
@@ -493,7 +491,7 @@ class TestHTTPScenarios:
         assert mock_app.logger.warning.call_count >= 1
         # Check that one of the calls contains application error info
         all_warnings = [call[0][0] for call in mock_app.logger.warning.call_args_list]
-        assert any('400' in w for w in all_warnings), f"No warning contained error code 400: {all_warnings}"
+        assert any('400' in w for w in all_warnings), f'No warning contained error code 400: {all_warnings}'
 
     @pytest.mark.asyncio
     async def test_send_timeout_logs_warning(self):

tests/unit_tests/utils/test_funcschema.py

@@ -9,6 +9,7 @@ Tests cover:
 Note: Do NOT use 'from __future__ import annotations' because
        funcschema.py expects actual type objects, not string annotations.
 """
+
 import pytest
 from importlib import import_module
 

tests/unit_tests/utils/test_image.py

@@ -20,55 +20,53 @@ class TestGetQQImageDownloadableUrl:
 
     def test_basic_url(self):
         """Parse basic image URL."""
-        url = "http://example.com/image.jpg"
+        url = 'http://example.com/image.jpg'
         result_url, query = get_qq_image_downloadable_url(url)
 
-        assert result_url == "http://example.com/image.jpg"
+        assert result_url == 'http://example.com/image.jpg'
         assert query == {}
 
     def test_url_with_query_params(self):
         """Parse URL with query parameters."""
-        url = "http://example.com/image.jpg?param1=value1&param2=value2"
+        url = 'http://example.com/image.jpg?param1=value1&param2=value2'
         result_url, query = get_qq_image_downloadable_url(url)
 
-        assert result_url == "http://example.com/image.jpg"
-        assert query == {"param1": ["value1"], "param2": ["value2"]}
+        assert result_url == 'http://example.com/image.jpg'
+        assert query == {'param1': ['value1'], 'param2': ['value2']}
 
     def test_url_with_port(self):
         """Parse URL with port number."""
-        url = "http://example.com:8080/image.jpg"
+        url = 'http://example.com:8080/image.jpg'
         result_url, query = get_qq_image_downloadable_url(url)
 
-        assert result_url == "http://example.com:8080/image.jpg"
+        assert result_url == 'http://example.com:8080/image.jpg'
 
     def test_url_with_path(self):
         """Parse URL with complex path."""
-        url = "http://example.com/path/to/image.jpg"
+        url = 'http://example.com/path/to/image.jpg'
         result_url, query = get_qq_image_downloadable_url(url)
 
-        assert result_url == "http://example.com/path/to/image.jpg"
+        assert result_url == 'http://example.com/path/to/image.jpg'
 
     def test_url_with_fragment(self):
         """Parse URL with fragment (fragment is not part of query)."""
-        url = "http://example.com/image.jpg#fragment"
+        url = 'http://example.com/image.jpg#fragment'
         result_url, query = get_qq_image_downloadable_url(url)
 
         # Fragment is not included in query string parsing
-        assert "http://example.com/image.jpg" in result_url
+        assert 'http://example.com/image.jpg' in result_url
 
     def test_https_url(self):
         """Parse HTTPS URL and preserve its scheme."""
-        url = "https://example.com/image.jpg"
+        url = 'https://example.com/image.jpg'
         result_url, query = get_qq_image_downloadable_url(url)
 
-        assert result_url == "https://example.com/image.jpg"
+        assert result_url == 'https://example.com/image.jpg'
         assert query == {}
 
     def test_preserves_qq_https_scheme_and_query(self):
         """QQ image URLs keep HTTPS and query parameters."""
-        result_url, query = get_qq_image_downloadable_url(
-            'https://gchat.qpic.cn/gchatpic_new/abc/0?term=2&is_origin=1'
-        )
+        result_url, query = get_qq_image_downloadable_url('https://gchat.qpic.cn/gchatpic_new/abc/0?term=2&is_origin=1')
 
         assert result_url == 'https://gchat.qpic.cn/gchatpic_new/abc/0'
         assert query == {'term': ['2'], 'is_origin': ['1']}
@@ -88,50 +86,50 @@ class TestExtractB64AndFormat:
     async def test_jpeg_data_uri(self):
         """Extract base64 and format from JPEG data URI."""
         # Create a simple base64 string
-        original_data = b"test image data"
+        original_data = b'test image data'
         b64_data = base64.b64encode(original_data).decode()
-        data_uri = f"data:image/jpeg;base64,{b64_data}"
+        data_uri = f'data:image/jpeg;base64,{b64_data}'
 
         result_b64, result_format = await extract_b64_and_format(data_uri)
 
         assert result_b64 == b64_data
-        assert result_format == "jpeg"
+        assert result_format == 'jpeg'
 
     @pytest.mark.asyncio
     async def test_png_data_uri(self):
         """Extract base64 and format from PNG data URI."""
-        original_data = b"test png data"
+        original_data = b'test png data'
         b64_data = base64.b64encode(original_data).decode()
-        data_uri = f"data:image/png;base64,{b64_data}"
+        data_uri = f'data:image/png;base64,{b64_data}'
 
         result_b64, result_format = await extract_b64_and_format(data_uri)
 
         assert result_b64 == b64_data
-        assert result_format == "png"
+        assert result_format == 'png'
 
     @pytest.mark.asyncio
     async def test_gif_data_uri(self):
         """Extract base64 and format from GIF data URI."""
-        original_data = b"test gif data"
+        original_data = b'test gif data'
         b64_data = base64.b64encode(original_data).decode()
-        data_uri = f"data:image/gif;base64,{b64_data}"
+        data_uri = f'data:image/gif;base64,{b64_data}'
 
         result_b64, result_format = await extract_b64_and_format(data_uri)
 
         assert result_b64 == b64_data
-        assert result_format == "gif"
+        assert result_format == 'gif'
 
     @pytest.mark.asyncio
     async def test_webp_data_uri(self):
         """Extract base64 and format from WebP data URI."""
-        original_data = b"test webp data"
+        original_data = b'test webp data'
         b64_data = base64.b64encode(original_data).decode()
-        data_uri = f"data:image/webp;base64,{b64_data}"
+        data_uri = f'data:image/webp;base64,{b64_data}'
 
         result_b64, result_format = await extract_b64_and_format(data_uri)
 
         assert result_b64 == b64_data
-        assert result_format == "webp"
+        assert result_format == 'webp'
 
     @pytest.mark.asyncio
     async def test_complex_base64(self):
@@ -139,7 +137,7 @@ class TestExtractB64AndFormat:
         # Base64 can include + and / characters
         original_data = bytes(range(256))  # All byte values
         b64_data = base64.b64encode(original_data).decode()
-        data_uri = f"data:image/png;base64,{b64_data}"
+        data_uri = f'data:image/png;base64,{b64_data}'
 
         result_b64, result_format = await extract_b64_and_format(data_uri)
 
@@ -150,9 +148,9 @@ class TestExtractB64AndFormat:
     @pytest.mark.asyncio
     async def test_empty_base64(self):
         """Handle empty base64 string."""
-        data_uri = "data:image/png;base64,"
+        data_uri = 'data:image/png;base64,'
 
         result_b64, result_format = await extract_b64_and_format(data_uri)
 
-        assert result_b64 == ""
-        assert result_format == "png"
+        assert result_b64 == ''
+        assert result_format == 'png'

tests/unit_tests/utils/test_importutil.py

@@ -23,52 +23,52 @@ class TestImportDir:
 
     def test_calls_importlib_for_each_python_file(self, tmp_path):
         """Should call importlib.import_module for each .py file."""
-        module_dir = tmp_path / "test_modules"
+        module_dir = tmp_path / 'test_modules'
         module_dir.mkdir()
 
-        (module_dir / "__init__.py").write_text("")
-        (module_dir / "module_a.py").write_text("VALUE_A = 'a'\n")
-        (module_dir / "module_b.py").write_text("VALUE_B = 'b'\n")
-        (module_dir / "readme.txt").write_text("not a module")
+        (module_dir / '__init__.py').write_text('')
+        (module_dir / 'module_a.py').write_text("VALUE_A = 'a'\n")
+        (module_dir / 'module_b.py').write_text("VALUE_B = 'b'\n")
+        (module_dir / 'readme.txt').write_text('not a module')
 
         from langbot.pkg.utils import importutil
 
-        with patch.object(importlib, "import_module") as mock_import:
-            importutil.import_dir(str(module_dir), path_prefix="test_prefix.")
+        with patch.object(importlib, 'import_module') as mock_import:
+            importutil.import_dir(str(module_dir), path_prefix='test_prefix.')
             # Should call import_module for each .py file (excluding __init__.py)
             assert mock_import.call_count == 2
 
     def test_skips_init_py(self, tmp_path):
         """Should skip __init__.py when importing."""
-        module_dir = tmp_path / "test_modules"
+        module_dir = tmp_path / 'test_modules'
         module_dir.mkdir()
 
-        (module_dir / "__init__.py").write_text("")
-        (module_dir / "regular.py").write_text("VALUE = 1\n")
+        (module_dir / '__init__.py').write_text('')
+        (module_dir / 'regular.py').write_text('VALUE = 1\n')
 
         from langbot.pkg.utils import importutil
 
-        with patch.object(importlib, "import_module") as mock_import:
-            importutil.import_dir(str(module_dir), path_prefix="test_prefix.")
+        with patch.object(importlib, 'import_module') as mock_import:
+            importutil.import_dir(str(module_dir), path_prefix='test_prefix.')
             # __init__.py should be skipped
             mock_import.assert_called_once()
             # The call should not include __init__
             call_args = mock_import.call_args[0][0]
-            assert "__init__" not in call_args
+            assert '__init__' not in call_args
 
     def test_ignores_non_py_files(self, tmp_path):
         """Should ignore non-.py files."""
-        module_dir = tmp_path / "test_modules"
+        module_dir = tmp_path / 'test_modules'
         module_dir.mkdir()
 
-        (module_dir / "module.py").write_text("VALUE = 1\n")
-        (module_dir / "readme.txt").write_text("text")
-        (module_dir / "data.json").write_text("{}")
+        (module_dir / 'module.py').write_text('VALUE = 1\n')
+        (module_dir / 'readme.txt').write_text('text')
+        (module_dir / 'data.json').write_text('{}')
 
         from langbot.pkg.utils import importutil
 
-        with patch.object(importlib, "import_module") as mock_import:
-            importutil.import_dir(str(module_dir), path_prefix="test_prefix.")
+        with patch.object(importlib, 'import_module') as mock_import:
+            importutil.import_dir(str(module_dir), path_prefix='test_prefix.')
             # Only .py files should be imported
             assert mock_import.call_count == 1
 
@@ -79,14 +79,14 @@ class TestImportModulesInPkg:
     def test_imports_modules_from_package(self, tmp_path):
         """Should import all modules from a package object."""
         mock_pkg = MagicMock()
-        mock_pkg.__file__ = str(tmp_path / "__init__.py")
+        mock_pkg.__file__ = str(tmp_path / '__init__.py')
 
-        (tmp_path / "__init__.py").write_text("")
-        (tmp_path / "mod1.py").write_text("MOD1 = 1\n")
+        (tmp_path / '__init__.py').write_text('')
+        (tmp_path / 'mod1.py').write_text('MOD1 = 1\n')
 
         from langbot.pkg.utils import importutil
 
-        with patch.object(importutil, "import_dir") as mock_import_dir:
+        with patch.object(importutil, 'import_dir') as mock_import_dir:
             importutil.import_modules_in_pkg(mock_pkg)
             mock_import_dir.assert_called_once()
             call_path = mock_import_dir.call_args[0][0]
@@ -101,11 +101,11 @@ class TestImportModulesInPkgs:
         from langbot.pkg.utils import importutil
 
         mock_pkg1 = MagicMock()
-        mock_pkg1.__file__ = "/path/to/pkg1/__init__.py"
+        mock_pkg1.__file__ = '/path/to/pkg1/__init__.py'
         mock_pkg2 = MagicMock()
-        mock_pkg2.__file__ = "/path/to/pkg2/__init__.py"
+        mock_pkg2.__file__ = '/path/to/pkg2/__init__.py'
 
-        with patch.object(importutil, "import_modules_in_pkg") as mock_import:
+        with patch.object(importutil, 'import_modules_in_pkg') as mock_import:
             importutil.import_modules_in_pkgs([mock_pkg1, mock_pkg2])
             assert mock_import.call_count == 2
 
@@ -116,18 +116,18 @@ class TestImportDotStyleDir:
     def test_converts_dot_notation_to_path(self, tmp_path):
         """Should convert dot notation to path and import."""
         # Create structure matching the dot notation
-        (tmp_path / "my").mkdir()
-        (tmp_path / "my" / "pkg").mkdir()
-        (tmp_path / "my" / "pkg" / "test").mkdir()
+        (tmp_path / 'my').mkdir()
+        (tmp_path / 'my' / 'pkg').mkdir()
+        (tmp_path / 'my' / 'pkg' / 'test').mkdir()
 
         from langbot.pkg.utils import importutil
 
-        with patch.object(importutil, "import_dir") as mock_import_dir:
-            importutil.import_dot_style_dir("my.pkg.test")
+        with patch.object(importutil, 'import_dir') as mock_import_dir:
+            importutil.import_dot_style_dir('my.pkg.test')
             # The path should be converted using os.path.join
             call_path = mock_import_dir.call_args[0][0]
             # Should contain the path components joined
-            assert "my" in call_path
+            assert 'my' in call_path
 
 
 class TestReadResourceFile:
@@ -137,16 +137,16 @@ class TestReadResourceFile:
         """Should read content from a resource file."""
         from langbot.pkg.utils import importutil
 
-        content = importutil.read_resource_file("templates/config.yaml")
-        assert "admins:" in content
-        assert "edition: community" in content
+        content = importutil.read_resource_file('templates/config.yaml')
+        assert 'admins:' in content
+        assert 'edition: community' in content
 
     def test_raises_for_nonexistent_file(self):
         """Should raise exception for non-existent resource file."""
         from langbot.pkg.utils import importutil
 
         with pytest.raises((FileNotFoundError, Exception)):
-            importutil.read_resource_file("nonexistent/path/file.txt")
+            importutil.read_resource_file('nonexistent/path/file.txt')
 
 
 class TestReadResourceFileBytes:
@@ -156,16 +156,16 @@ class TestReadResourceFileBytes:
         """Should read content as bytes from a resource file."""
         from langbot.pkg.utils import importutil
 
-        content = importutil.read_resource_file_bytes("templates/config.yaml")
-        assert b"admins:" in content
-        assert b"edition: community" in content
+        content = importutil.read_resource_file_bytes('templates/config.yaml')
+        assert b'admins:' in content
+        assert b'edition: community' in content
 
     def test_raises_for_nonexistent_file_bytes(self):
         """Should raise exception for non-existent resource file."""
         from langbot.pkg.utils import importutil
 
         with pytest.raises((FileNotFoundError, Exception)):
-            importutil.read_resource_file_bytes("nonexistent/path/file.txt")
+            importutil.read_resource_file_bytes('nonexistent/path/file.txt')
 
 
 class TestListResourceFiles:
@@ -175,9 +175,9 @@ class TestListResourceFiles:
         """Should list files in a resource directory."""
         from langbot.pkg.utils import importutil
 
-        files = importutil.list_resource_files("templates")
-        assert "config.yaml" in files
-        assert "default-pipeline-config.json" in files
+        files = importutil.list_resource_files('templates')
+        assert 'config.yaml' in files
+        assert 'default-pipeline-config.json' in files
         assert all(isinstance(file, str) for file in files)
 
     def test_raises_for_nonexistent_directory(self):
@@ -185,8 +185,8 @@ class TestListResourceFiles:
         from langbot.pkg.utils import importutil
 
         with pytest.raises((FileNotFoundError, Exception)):
-            importutil.list_resource_files("nonexistent_directory_xyz")
+            importutil.list_resource_files('nonexistent_directory_xyz')
 
 
-if __name__ == "__main__":
-    pytest.main([__file__, "-v"])
+if __name__ == '__main__':
+    pytest.main([__file__, '-v'])

tests/unit_tests/utils/test_platform.py

@@ -5,6 +5,7 @@ Tests cover:
 - Docker environment detection
 - WebSocket plugin runtime mode
 """
+
 from __future__ import annotations
 
 import os
@@ -86,4 +87,4 @@ class TestGetPlatform:
         assert platform_module.use_websocket_to_connect_plugin_runtime() is True
 
         # Restore
-        platform_module.standalone_runtime = original
+        platform_module.standalone_runtime = original

tests/unit_tests/utils/test_proxy.py

@@ -60,10 +60,12 @@ class TestProxyManager:
 
     async def test_initialize_config_overrides_env(self):
         """Config proxy overrides environment variables."""
-        mock_app = self._create_mock_app(proxy_config={
-            'http': 'http://config-proxy:8080',
-            'https': 'https://config-proxy:8443',
-        })
+        mock_app = self._create_mock_app(
+            proxy_config={
+                'http': 'http://config-proxy:8080',
+                'https': 'https://config-proxy:8443',
+            }
+        )
 
         with patch.dict(os.environ, {'HTTP_PROXY': 'http://env-proxy:8080'}):
             pm = ProxyManager(mock_app)
@@ -74,10 +76,12 @@ class TestProxyManager:
 
     async def test_initialize_sets_env_variables(self):
         """initialize sets proxy to environment variables."""
-        mock_app = self._create_mock_app(proxy_config={
-            'http': 'http://test-proxy:8080',
-            'https': 'https://test-proxy:8443',
-        })
+        mock_app = self._create_mock_app(
+            proxy_config={
+                'http': 'http://test-proxy:8080',
+                'https': 'https://test-proxy:8443',
+            }
+        )
 
         pm = ProxyManager(mock_app)
         await pm.initialize()
@@ -143,9 +147,11 @@ class TestProxyManager:
 
     async def test_initialize_http_only_config(self):
         """initialize handles http-only config."""
-        mock_app = self._create_mock_app(proxy_config={
-            'http': 'http://http-only:8080',
-        })
+        mock_app = self._create_mock_app(
+            proxy_config={
+                'http': 'http://http-only:8080',
+            }
+        )
 
         # Clear any existing proxy env vars
         env_backup = {}

tests/unit_tests/utils/test_runner.py

@@ -29,63 +29,63 @@ class TestGetRunnerCategory:
 
     def test_empty_url_returns_unknown(self):
         """Empty or None URL should return UNKNOWN."""
-        assert get_runner_category("test", "") == RunnerCategory.UNKNOWN
-        assert get_runner_category("test", None) == RunnerCategory.UNKNOWN
+        assert get_runner_category('test', '') == RunnerCategory.UNKNOWN
+        assert get_runner_category('test', None) == RunnerCategory.UNKNOWN
 
     def test_localhost_returns_local(self):
         """localhost URL should be categorized as LOCAL."""
-        assert get_runner_category("test", "http://localhost:3000") == RunnerCategory.LOCAL
-        assert get_runner_category("test", "https://localhost") == RunnerCategory.LOCAL
+        assert get_runner_category('test', 'http://localhost:3000') == RunnerCategory.LOCAL
+        assert get_runner_category('test', 'https://localhost') == RunnerCategory.LOCAL
 
     def test_127_0_0_1_returns_local(self):
         """127.0.0.1 URL should be categorized as LOCAL."""
-        assert get_runner_category("test", "http://127.0.0.1:8080") == RunnerCategory.LOCAL
-        assert get_runner_category("test", "https://127.0.0.1") == RunnerCategory.LOCAL
+        assert get_runner_category('test', 'http://127.0.0.1:8080') == RunnerCategory.LOCAL
+        assert get_runner_category('test', 'https://127.0.0.1') == RunnerCategory.LOCAL
 
     def test_0_0_0_0_returns_local(self):
         """0.0.0.0 URL should be categorized as LOCAL."""
-        assert get_runner_category("test", "http://0.0.0.0:8080") == RunnerCategory.LOCAL
+        assert get_runner_category('test', 'http://0.0.0.0:8080') == RunnerCategory.LOCAL
 
     def test_private_ip_192_168_returns_local(self):
         """192.168.x.x private IP should be categorized as LOCAL."""
-        assert get_runner_category("test", "http://192.168.1.1:3000") == RunnerCategory.LOCAL
-        assert get_runner_category("test", "http://192.168.0.100") == RunnerCategory.LOCAL
+        assert get_runner_category('test', 'http://192.168.1.1:3000') == RunnerCategory.LOCAL
+        assert get_runner_category('test', 'http://192.168.0.100') == RunnerCategory.LOCAL
 
     def test_private_ip_10_returns_local(self):
         """10.x.x.x private IP should be categorized as LOCAL."""
-        assert get_runner_category("test", "http://10.0.0.1:8080") == RunnerCategory.LOCAL
-        assert get_runner_category("test", "http://10.255.255.255") == RunnerCategory.LOCAL
+        assert get_runner_category('test', 'http://10.0.0.1:8080') == RunnerCategory.LOCAL
+        assert get_runner_category('test', 'http://10.255.255.255') == RunnerCategory.LOCAL
 
     def test_private_ip_172_16_31_returns_local(self):
         """172.16.x.x - 172.31.x.x private IP range should be categorized as LOCAL."""
-        assert get_runner_category("test", "http://172.16.0.1:8080") == RunnerCategory.LOCAL
-        assert get_runner_category("test", "http://172.20.0.1") == RunnerCategory.LOCAL
-        assert get_runner_category("test", "http://172.31.255.255") == RunnerCategory.LOCAL
+        assert get_runner_category('test', 'http://172.16.0.1:8080') == RunnerCategory.LOCAL
+        assert get_runner_category('test', 'http://172.20.0.1') == RunnerCategory.LOCAL
+        assert get_runner_category('test', 'http://172.31.255.255') == RunnerCategory.LOCAL
 
     def test_n8n_cloud_returns_cloud(self):
         """n8n.cloud domain should be categorized as CLOUD."""
-        assert get_runner_category("test", "https://myinstance.n8n.cloud") == RunnerCategory.CLOUD
-        assert get_runner_category("test", "https://test.n8n.io") == RunnerCategory.CLOUD
+        assert get_runner_category('test', 'https://myinstance.n8n.cloud') == RunnerCategory.CLOUD
+        assert get_runner_category('test', 'https://test.n8n.io') == RunnerCategory.CLOUD
 
     def test_dify_cloud_returns_cloud(self):
         """Dify cloud domains should be categorized as CLOUD."""
-        assert get_runner_category("test", "https://api.dify.ai/v1") == RunnerCategory.CLOUD
-        assert get_runner_category("test", "https://cloud.dify.ai") == RunnerCategory.CLOUD
+        assert get_runner_category('test', 'https://api.dify.ai/v1') == RunnerCategory.CLOUD
+        assert get_runner_category('test', 'https://cloud.dify.ai') == RunnerCategory.CLOUD
 
     def test_coze_cloud_returns_cloud(self):
         """Coze domains should be categorized as CLOUD."""
-        assert get_runner_category("test", "https://api.coze.com") == RunnerCategory.CLOUD
-        assert get_runner_category("test", "https://api.coze.cn") == RunnerCategory.CLOUD
+        assert get_runner_category('test', 'https://api.coze.com') == RunnerCategory.CLOUD
+        assert get_runner_category('test', 'https://api.coze.cn') == RunnerCategory.CLOUD
 
     def test_langflow_cloud_returns_cloud(self):
         """Langflow domains should be categorized as CLOUD."""
-        assert get_runner_category("test", "https://cloud.langflow.ai") == RunnerCategory.CLOUD
-        assert get_runner_category("test", "https://test.langflow.org") == RunnerCategory.CLOUD
+        assert get_runner_category('test', 'https://cloud.langflow.ai') == RunnerCategory.CLOUD
+        assert get_runner_category('test', 'https://test.langflow.org') == RunnerCategory.CLOUD
 
     def test_other_url_returns_cloud(self):
         """Other URLs should default to CLOUD category."""
-        assert get_runner_category("test", "https://example.com") == RunnerCategory.CLOUD
-        assert get_runner_category("test", "https://myserver.example.org") == RunnerCategory.CLOUD
+        assert get_runner_category('test', 'https://example.com') == RunnerCategory.CLOUD
+        assert get_runner_category('test', 'https://myserver.example.org') == RunnerCategory.CLOUD
 
     @pytest.mark.parametrize(
         'runner_url',
@@ -101,7 +101,7 @@ class TestGetRunnerCategory:
     )
     def test_invalid_urls_return_unknown(self, runner_url):
         """Invalid or incomplete URLs should return UNKNOWN."""
-        assert get_runner_category("test", runner_url) == RunnerCategory.UNKNOWN
+        assert get_runner_category('test', runner_url) == RunnerCategory.UNKNOWN
 
     def test_urlparse_exception_returns_unknown(self):
         """Exception during URL parsing should return UNKNOWN."""
@@ -109,15 +109,15 @@ class TestGetRunnerCategory:
         from langbot.pkg.utils import runner
 
         def mock_urlparse(url):
-            raise Exception("URL parsing failed")
+            raise Exception('URL parsing failed')
 
-        with patch("langbot.pkg.utils.runner.urlparse", side_effect=mock_urlparse):
-            result = runner.get_runner_category("test", "http://example.com")
+        with patch('langbot.pkg.utils.runner.urlparse', side_effect=mock_urlparse):
+            result = runner.get_runner_category('test', 'http://example.com')
             assert result == RunnerCategory.UNKNOWN
 
     def test_url_without_scheme_returns_unknown(self):
         """URL without scheme should return UNKNOWN."""
-        assert get_runner_category("test", "example.com") == RunnerCategory.UNKNOWN
+        assert get_runner_category('test', 'example.com') == RunnerCategory.UNKNOWN
 
     @pytest.mark.parametrize(
         'runner_url',
@@ -146,20 +146,21 @@ class TestGetRunnerCategory:
         """Domain names that only look like private IP prefixes should not be LOCAL."""
         assert get_runner_category('langflow-api', runner_url) == RunnerCategory.CLOUD
 
+
 class TestIsCloudRunner:
     """Test is_cloud_runner helper function."""
 
     def test_cloud_runner_returns_true(self):
         """Cloud URL should return True."""
-        assert is_cloud_runner("test", "https://api.dify.ai") is True
+        assert is_cloud_runner('test', 'https://api.dify.ai') is True
 
     def test_local_runner_returns_false(self):
         """Local URL should return False."""
-        assert is_cloud_runner("test", "http://localhost:3000") is False
+        assert is_cloud_runner('test', 'http://localhost:3000') is False
 
     def test_unknown_returns_false(self):
         """Unknown category should return False."""
-        assert is_cloud_runner("test", None) is False
+        assert is_cloud_runner('test', None) is False
 
 
 class TestIsLocalRunner:
@@ -167,15 +168,15 @@ class TestIsLocalRunner:
 
     def test_local_runner_returns_true(self):
         """Local URL should return True."""
-        assert is_local_runner("test", "http://localhost:3000") is True
+        assert is_local_runner('test', 'http://localhost:3000') is True
 
     def test_cloud_runner_returns_false(self):
         """Cloud URL should return False."""
-        assert is_local_runner("test", "https://api.dify.ai") is False
+        assert is_local_runner('test', 'https://api.dify.ai') is False
 
     def test_unknown_returns_false(self):
         """Unknown category should return False."""
-        assert is_local_runner("test", None) is False
+        assert is_local_runner('test', None) is False
 
 
 class TestGetRunnerInfo:
@@ -183,17 +184,17 @@ class TestGetRunnerInfo:
 
     def test_returns_dict_with_expected_keys(self):
         """Should return dict with name, url, and category keys."""
-        info = get_runner_info("my-runner", "http://localhost:3000")
-        assert "name" in info
-        assert "url" in info
-        assert "category" in info
+        info = get_runner_info('my-runner', 'http://localhost:3000')
+        assert 'name' in info
+        assert 'url' in info
+        assert 'category' in info
 
     def test_includes_correct_values(self):
         """Should include correct values in dict."""
-        info = get_runner_info("my-runner", "http://localhost:3000")
-        assert info["name"] == "my-runner"
-        assert info["url"] == "http://localhost:3000"
-        assert info["category"] == RunnerCategory.LOCAL
+        info = get_runner_info('my-runner', 'http://localhost:3000')
+        assert info['name'] == 'my-runner'
+        assert info['url'] == 'http://localhost:3000'
+        assert info['category'] == RunnerCategory.LOCAL
 
 
 class TestExtractRunnerUrl:
@@ -203,74 +204,58 @@ class TestExtractRunnerUrl:
         """Should extract base-url from dify-service-api config."""
         runner = Mock()
         runner.pipeline_config = {}
-        pipeline_config = {
-            "ai": {
-                "dify-service-api": {"base-url": "https://api.dify.ai"}
-            }
-        }
-        url = extract_runner_url("dify-service-api", runner, pipeline_config)
-        assert url == "https://api.dify.ai"
+        pipeline_config = {'ai': {'dify-service-api': {'base-url': 'https://api.dify.ai'}}}
+        url = extract_runner_url('dify-service-api', runner, pipeline_config)
+        assert url == 'https://api.dify.ai'
 
     def test_n8n_service_api_extracts_url(self):
         """Should extract webhook-url from n8n-service-api config."""
         runner = Mock()
         runner.pipeline_config = {}
-        pipeline_config = {
-            "ai": {
-                "n8n-service-api": {"webhook-url": "https://my.n8n.cloud/webhook"}
-            }
-        }
-        url = extract_runner_url("n8n-service-api", runner, pipeline_config)
-        assert url == "https://my.n8n.cloud/webhook"
+        pipeline_config = {'ai': {'n8n-service-api': {'webhook-url': 'https://my.n8n.cloud/webhook'}}}
+        url = extract_runner_url('n8n-service-api', runner, pipeline_config)
+        assert url == 'https://my.n8n.cloud/webhook'
 
     def test_coze_api_extracts_url(self):
         """Should extract api-base from coze-api config."""
         runner = Mock()
         runner.pipeline_config = {}
-        pipeline_config = {
-            "ai": {
-                "coze-api": {"api-base": "https://api.coze.com"}
-            }
-        }
-        url = extract_runner_url("coze-api", runner, pipeline_config)
-        assert url == "https://api.coze.com"
+        pipeline_config = {'ai': {'coze-api': {'api-base': 'https://api.coze.com'}}}
+        url = extract_runner_url('coze-api', runner, pipeline_config)
+        assert url == 'https://api.coze.com'
 
     def test_langflow_api_extracts_url(self):
         """Should extract base-url from langflow-api config."""
         runner = Mock()
         runner.pipeline_config = {}
-        pipeline_config = {
-            "ai": {
-                "langflow-api": {"base-url": "https://cloud.langflow.ai"}
-            }
-        }
-        url = extract_runner_url("langflow-api", runner, pipeline_config)
-        assert url == "https://cloud.langflow.ai"
+        pipeline_config = {'ai': {'langflow-api': {'base-url': 'https://cloud.langflow.ai'}}}
+        url = extract_runner_url('langflow-api', runner, pipeline_config)
+        assert url == 'https://cloud.langflow.ai'
 
     def test_unknown_runner_returns_none(self):
         """Unknown runner name should return None."""
         runner = Mock()
         runner.pipeline_config = {}
         pipeline_config = {}
-        url = extract_runner_url("unknown-runner", runner, pipeline_config)
+        url = extract_runner_url('unknown-runner', runner, pipeline_config)
         assert url is None
 
     def test_none_runner_returns_none(self):
         """None runner should return None."""
-        url = extract_runner_url("test", None, {})
+        url = extract_runner_url('test', None, {})
         assert url is None
 
     def test_runner_without_pipeline_config_returns_none(self):
         """Runner without pipeline_config attribute should return None."""
         runner = Mock(spec=[])  # Empty spec means no attributes
-        url = extract_runner_url("test", runner, {})
+        url = extract_runner_url('test', runner, {})
         assert url is None
 
     def test_none_pipeline_config_returns_none(self):
         """None pipeline_config should return None."""
         runner = Mock()
         runner.pipeline_config = {}
-        url = extract_runner_url("dify-service-api", runner, None)
+        url = extract_runner_url('dify-service-api', runner, None)
         assert url is None
 
     def test_missing_ai_config_returns_none(self):
@@ -278,7 +263,7 @@ class TestExtractRunnerUrl:
         runner = Mock()
         runner.pipeline_config = {}
         pipeline_config = {}
-        url = extract_runner_url("dify-service-api", runner, pipeline_config)
+        url = extract_runner_url('dify-service-api', runner, pipeline_config)
         assert url is None
 
 
@@ -289,19 +274,15 @@ class TestGetRunnerCategoryFromRunner:
         """Should extract URL and return correct category."""
         runner = Mock()
         runner.pipeline_config = {}
-        pipeline_config = {
-            "ai": {
-                "dify-service-api": {"base-url": "https://api.dify.ai"}
-            }
-        }
-        category = get_runner_category_from_runner("dify-service-api", runner, pipeline_config)
+        pipeline_config = {'ai': {'dify-service-api': {'base-url': 'https://api.dify.ai'}}}
+        category = get_runner_category_from_runner('dify-service-api', runner, pipeline_config)
         assert category == RunnerCategory.CLOUD
 
     def test_returns_unknown_for_missing_url(self):
         """Should return UNKNOWN when URL cannot be extracted."""
         runner = Mock()
         runner.pipeline_config = {}
-        category = get_runner_category_from_runner("unknown", runner, {})
+        category = get_runner_category_from_runner('unknown', runner, {})
         assert category == RunnerCategory.UNKNOWN
 
 
@@ -310,9 +291,9 @@ class TestConstants:
 
     def test_runner_category_constants(self):
         """RunnerCategory should have LOCAL, CLOUD, UNKNOWN."""
-        assert RunnerCategory.LOCAL == "local"
-        assert RunnerCategory.CLOUD == "cloud"
-        assert RunnerCategory.UNKNOWN == "unknown"
+        assert RunnerCategory.LOCAL == 'local'
+        assert RunnerCategory.CLOUD == 'cloud'
+        assert RunnerCategory.UNKNOWN == 'unknown'
 
     def test_cloud_domains_not_empty(self):
         """CLOUD_DOMAINS should not be empty."""
@@ -323,5 +304,5 @@ class TestConstants:
         assert len(LOCAL_PATTERNS) > 0
 
 
-if __name__ == "__main__":
-    pytest.main([__file__, "-v"])
+if __name__ == '__main__':
+    pytest.main([__file__, '-v'])