feat(monitoring): add host RAG trace observability

* test: cover frontend CRUD smoke flows

* test: add bot CRUD smoke coverage

* test: add bot/pipeline advanced flows and cross-resource tests

- Bot enable/disable toggle with state persistence
- Bot detail tab switching (Configuration, Logs, Sessions)
- Bot form dirty state and save button behavior
- Bot name validation error display
- Pipeline tab switching (Configuration, Dashboard)
- Pipeline form dirty state
- Pipeline name validation error display
- Cross-resource flow: create pipeline then bind to bot
- Empty states for bots, pipelines, knowledge bases, MCP servers

.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/api/http/controller/groups/monitoring.py

@@ -313,18 +313,30 @@ class MonitoringRouterGroup(group.RouterGroup):
                 offset=0,
             )
 
+            # Get traces
+            traces, traces_total = await self.ap.monitoring_service.get_traces(
+                bot_ids=bot_ids if bot_ids else None,
+                pipeline_ids=pipeline_ids if pipeline_ids else None,
+                start_time=start_time,
+                end_time=end_time,
+                limit=limit,
+                offset=0,
+            )
+
             return self.success(
                 data={
                     'overview': overview,
                     'messages': messages,
                     'llmCalls': llm_calls,
                     'embeddingCalls': embedding_calls,
+                    'traces': traces,
                     'sessions': sessions,
                     'errors': errors,
                     'totalCount': {
                         'messages': messages_total,
                         'llmCalls': llm_calls_total,
                         'embeddingCalls': embedding_calls_total,
+                        'traces': traces_total,
                         'sessions': sessions_total,
                         'errors': errors_total,
                     },
@@ -350,6 +362,49 @@ class MonitoringRouterGroup(group.RouterGroup):
 
             return self.success(data=details)
 
+        @self.route('/traces', methods=['GET'], auth_type=group.AuthType.USER_TOKEN)
+        async def get_traces() -> str:
+            """Get end-to-end trace records."""
+            bot_ids = quart.request.args.getlist('botId')
+            pipeline_ids = quart.request.args.getlist('pipelineId')
+            session_ids = quart.request.args.getlist('sessionId')
+            statuses = quart.request.args.getlist('status')
+            start_time_str = quart.request.args.get('startTime')
+            end_time_str = quart.request.args.get('endTime')
+            limit = int(quart.request.args.get('limit', 100))
+            offset = int(quart.request.args.get('offset', 0))
+
+            start_time = parse_iso_datetime(start_time_str)
+            end_time = parse_iso_datetime(end_time_str)
+
+            traces, total = await self.ap.monitoring_service.get_traces(
+                bot_ids=bot_ids if bot_ids else None,
+                pipeline_ids=pipeline_ids if pipeline_ids else None,
+                session_ids=session_ids if session_ids else None,
+                statuses=statuses if statuses else None,
+                start_time=start_time,
+                end_time=end_time,
+                limit=limit,
+                offset=offset,
+            )
+
+            return self.success(
+                data={
+                    'traces': traces,
+                    'total': total,
+                    'limit': limit,
+                    'offset': offset,
+                }
+            )
+
+        @self.route('/traces/<trace_id>', methods=['GET'], auth_type=group.AuthType.USER_TOKEN)
+        async def get_trace_details(trace_id: str) -> str:
+            """Get one trace with all spans."""
+            details = await self.ap.monitoring_service.get_trace_details(trace_id)
+            if not details.get('found'):
+                return self.http_status(404, -1, f'Trace {trace_id} not found')
+            return self.success(data=details)
+
         @self.route('/export', methods=['GET'], auth_type=group.AuthType.USER_TOKEN)
         async def export_data() -> tuple[str, int]:
             """Export monitoring data as CSV"""

src/langbot/pkg/api/http/controller/groups/plugins.py

@@ -350,8 +350,24 @@ class PluginsRouterGroup(group.RouterGroup):
             if not endpoint.startswith('/') or '..' in endpoint:
                 return self.http_status(400, -1, 'invalid endpoint')
 
+            caller = {
+                'plugin_author': author,
+                'plugin_name': plugin_name,
+                'page_id': page_id,
+                'origin': _get_request_origin(),
+            }
+            headers = {
+                key: value
+                for key, value in {
+                    'user-agent': quart.request.headers.get('User-Agent'),
+                    'x-request-id': quart.request.headers.get('X-Request-ID'),
+                    'x-forwarded-for': quart.request.headers.get('X-Forwarded-For'),
+                }.items()
+                if value
+            }
+
             result = await self.ap.plugin_connector.handle_page_api(
-                author, plugin_name, page_id, endpoint, method.upper(), body
+                author, plugin_name, page_id, endpoint, method.upper(), body, caller, headers
             )
             if result.get('error'):
                 return self.http_status(400, -1, result['error'])

src/langbot/pkg/api/http/service/monitoring.py

@@ -3,11 +3,53 @@ from __future__ import annotations
 import uuid
 import datetime
 import sqlalchemy
+import json
 
 from ....core import app
 from ....entity.persistence import monitoring as persistence_monitoring
 
 
+def _utc_now() -> datetime.datetime:
+    return datetime.datetime.now(datetime.timezone.utc).replace(tzinfo=None)
+
+
+def _json_dumps(value: dict | list | None) -> str | None:
+    if value is None:
+        return None
+    try:
+        return json.dumps(value, ensure_ascii=False, default=str)
+    except Exception:
+        return json.dumps({'serialization_error': str(value)}, ensure_ascii=False)
+
+
+def _json_loads(value: str | None) -> dict | list | None:
+    if not value:
+        return None
+    try:
+        return json.loads(value)
+    except Exception:
+        return None
+
+
+def new_trace_id() -> str:
+    return f'trace-{uuid.uuid4().hex[:16]}'
+
+
+def new_span_id() -> str:
+    return f'span-{uuid.uuid4().hex[:16]}'
+
+
+def normalize_trace_status(status: str | None) -> str:
+    """Normalize operation status to the monitoring UI vocabulary."""
+    if status in ('completed', 'ok'):
+        return 'success'
+    if status in ('failed', 'failure', 'exception'):
+        return 'error'
+    if status in ('running', 'success', 'error'):
+        return status
+    return 'success'
+
+
 class MonitoringService:
     """Monitoring service"""
 
@@ -74,6 +116,18 @@ class MonitoringService:
                 persistence_monitoring.MonitoringFeedback.timestamp,
                 persistence_monitoring.MonitoringFeedback.id,
             ),
+            (
+                'monitoring_traces',
+                persistence_monitoring.MonitoringTrace,
+                persistence_monitoring.MonitoringTrace.started_at,
+                persistence_monitoring.MonitoringTrace.trace_id,
+            ),
+            (
+                'monitoring_spans',
+                persistence_monitoring.MonitoringSpan,
+                persistence_monitoring.MonitoringSpan.started_at,
+                persistence_monitoring.MonitoringSpan.span_id,
+            ),
         ]
 
         deleted_counts: dict[str, int] = {}
@@ -133,6 +187,116 @@ class MonitoringService:
 
     # ========== Recording Methods ==========
 
+    async def start_trace(
+        self,
+        trace_id: str | None = None,
+        name: str = 'LangBot query',
+        bot_id: str | None = None,
+        bot_name: str | None = None,
+        pipeline_id: str | None = None,
+        pipeline_name: str | None = None,
+        session_id: str | None = None,
+        message_id: str | None = None,
+        query_id: str | int | None = None,
+        attributes: dict | None = None,
+    ) -> str:
+        """Create or update a trace header row."""
+        trace_id = trace_id or new_trace_id()
+        trace_data = {
+            'trace_id': trace_id,
+            'started_at': _utc_now(),
+            'ended_at': None,
+            'duration': None,
+            'status': 'running',
+            'name': name,
+            'bot_id': bot_id,
+            'bot_name': bot_name,
+            'pipeline_id': pipeline_id,
+            'pipeline_name': pipeline_name,
+            'session_id': session_id,
+            'message_id': message_id,
+            'query_id': str(query_id) if query_id is not None else None,
+            'attributes': _json_dumps(attributes),
+        }
+
+        await self.ap.persistence_mgr.execute_async(
+            sqlalchemy.insert(persistence_monitoring.MonitoringTrace).values(trace_data)
+        )
+        return trace_id
+
+    async def finish_trace(
+        self,
+        trace_id: str,
+        status: str = 'success',
+        duration: int | None = None,
+        message_id: str | None = None,
+        attributes: dict | None = None,
+    ) -> None:
+        """Mark a trace complete."""
+        update_values: dict = {
+            'ended_at': _utc_now(),
+            'status': normalize_trace_status(status),
+        }
+        if duration is not None:
+            update_values['duration'] = duration
+        if message_id is not None:
+            update_values['message_id'] = message_id
+        if attributes is not None:
+            update_values['attributes'] = _json_dumps(attributes)
+
+        await self.ap.persistence_mgr.execute_async(
+            sqlalchemy.update(persistence_monitoring.MonitoringTrace)
+            .where(persistence_monitoring.MonitoringTrace.trace_id == trace_id)
+            .values(update_values)
+        )
+
+    async def record_span(
+        self,
+        trace_id: str,
+        name: str,
+        kind: str,
+        status: str = 'success',
+        span_id: str | None = None,
+        parent_span_id: str | None = None,
+        started_at: datetime.datetime | None = None,
+        ended_at: datetime.datetime | None = None,
+        duration: int | None = None,
+        message_id: str | None = None,
+        session_id: str | None = None,
+        bot_id: str | None = None,
+        pipeline_id: str | None = None,
+        attributes: dict | None = None,
+        error_message: str | None = None,
+    ) -> str:
+        """Record a single completed span."""
+        started_at = started_at or _utc_now()
+        if duration is None and ended_at is not None:
+            duration = int((ended_at - started_at).total_seconds() * 1000)
+        elif duration is not None:
+            duration = int(round(float(duration)))
+        span_data = {
+            'span_id': span_id or new_span_id(),
+            'trace_id': trace_id,
+            'parent_span_id': parent_span_id,
+            'name': name,
+            'kind': kind,
+            'status': normalize_trace_status(status),
+            'started_at': started_at,
+            'ended_at': ended_at or _utc_now(),
+            'duration': duration,
+            'message_id': message_id,
+            'session_id': session_id,
+            'bot_id': bot_id,
+            'pipeline_id': pipeline_id,
+            'attributes': _json_dumps(attributes),
+            'error_message': error_message,
+        }
+
+        await self.ap.persistence_mgr.execute_async(
+            sqlalchemy.insert(persistence_monitoring.MonitoringSpan).values(span_data)
+        )
+        return span_data['span_id']
+
     async def record_message(
         self,
         bot_id: str,
@@ -1076,6 +1240,19 @@ class MonitoringService:
             for row in error_rows
         ]
 
+        trace_query = (
+            sqlalchemy.select(persistence_monitoring.MonitoringTrace)
+            .where(persistence_monitoring.MonitoringTrace.message_id == message_id)
+            .order_by(persistence_monitoring.MonitoringTrace.started_at.desc())
+            .limit(1)
+        )
+        trace_result = await self.ap.persistence_mgr.execute_async(trace_query)
+        trace_row = trace_result.first()
+        trace = None
+        if trace_row:
+            trace_model = trace_row[0] if isinstance(trace_row, tuple) else trace_row
+            trace = self._serialize_trace(trace_model)
+
         return {
             'message_id': message_id,
             'found': True,
@@ -1090,6 +1267,90 @@ class MonitoringService:
                 'average_duration_ms': int(total_duration / len(llm_rows)) if len(llm_rows) > 0 else 0,
             },
             'errors': errors,
+            'trace': trace,
+        }
+
+    def _serialize_trace(self, trace: persistence_monitoring.MonitoringTrace) -> dict:
+        data = self.ap.persistence_mgr.serialize_model(persistence_monitoring.MonitoringTrace, trace)
+        data['attributes'] = _json_loads(data.get('attributes')) or {}
+        return data
+
+    def _serialize_span(self, span: persistence_monitoring.MonitoringSpan) -> dict:
+        data = self.ap.persistence_mgr.serialize_model(persistence_monitoring.MonitoringSpan, span)
+        data['attributes'] = _json_loads(data.get('attributes')) or {}
+        return data
+
+    async def get_traces(
+        self,
+        bot_ids: list[str] | None = None,
+        pipeline_ids: list[str] | None = None,
+        session_ids: list[str] | None = None,
+        statuses: list[str] | None = None,
+        start_time: datetime.datetime | None = None,
+        end_time: datetime.datetime | None = None,
+        limit: int = 100,
+        offset: int = 0,
+    ) -> tuple[list[dict], int]:
+        """Get trace headers with filters."""
+        conditions = []
+        if bot_ids:
+            conditions.append(persistence_monitoring.MonitoringTrace.bot_id.in_(bot_ids))
+        if pipeline_ids:
+            conditions.append(persistence_monitoring.MonitoringTrace.pipeline_id.in_(pipeline_ids))
+        if session_ids:
+            conditions.append(persistence_monitoring.MonitoringTrace.session_id.in_(session_ids))
+        if statuses:
+            conditions.append(persistence_monitoring.MonitoringTrace.status.in_(statuses))
+        if start_time:
+            conditions.append(persistence_monitoring.MonitoringTrace.started_at >= start_time)
+        if end_time:
+            conditions.append(persistence_monitoring.MonitoringTrace.started_at <= end_time)
+
+        count_query = sqlalchemy.select(sqlalchemy.func.count(persistence_monitoring.MonitoringTrace.trace_id))
+        query = sqlalchemy.select(persistence_monitoring.MonitoringTrace)
+        if conditions:
+            clause = sqlalchemy.and_(*conditions)
+            count_query = count_query.where(clause)
+            query = query.where(clause)
+
+        total_result = await self.ap.persistence_mgr.execute_async(count_query)
+        total = total_result.scalar() or 0
+
+        query = query.order_by(persistence_monitoring.MonitoringTrace.started_at.desc()).limit(limit).offset(offset)
+        result = await self.ap.persistence_mgr.execute_async(query)
+        traces = [
+            self._serialize_trace(row[0] if isinstance(row, tuple) else row)
+            for row in result.all()
+        ]
+        return traces, total
+
+    async def get_trace_details(self, trace_id: str) -> dict:
+        """Get a single trace and all spans in chronological order."""
+        trace_query = sqlalchemy.select(persistence_monitoring.MonitoringTrace).where(
+            persistence_monitoring.MonitoringTrace.trace_id == trace_id
+        )
+        trace_result = await self.ap.persistence_mgr.execute_async(trace_query)
+        trace_row = trace_result.first()
+        if not trace_row:
+            return {'trace_id': trace_id, 'found': False}
+
+        trace = trace_row[0] if isinstance(trace_row, tuple) else trace_row
+        span_query = (
+            sqlalchemy.select(persistence_monitoring.MonitoringSpan)
+            .where(persistence_monitoring.MonitoringSpan.trace_id == trace_id)
+            .order_by(persistence_monitoring.MonitoringSpan.started_at.asc())
+        )
+        span_result = await self.ap.persistence_mgr.execute_async(span_query)
+        spans = [
+            self._serialize_span(row[0] if isinstance(row, tuple) else row)
+            for row in span_result.all()
+        ]
+
+        return {
+            'trace_id': trace_id,
+            'found': True,
+            'trace': self._serialize_trace(trace),
+            'spans': spans,
         }
 
     # ========== Export Methods ==========

src/langbot/pkg/box/workspace.py

@@ -146,19 +146,13 @@ def wrap_python_command_with_env(command: str, *, mount_path: str = '/workspace'
         _LB_PIP_CACHE_DIR="{mount_path}/.cache/pip"
 
         mkdir -p "$_LB_META_DIR" "$_LB_TMP_DIR" "$_LB_PIP_CACHE_DIR"
-        _LB_SYSTEM_PYTHON="$(command -v python3 || command -v python || true)"
-        if [ -z "$_LB_SYSTEM_PYTHON" ]; then
-          echo "python3 or python is required to prepare the workspace Python environment" >&2
-          exit 127
-        fi
-
         export TMPDIR="$_LB_TMP_DIR"
         export TEMP="$_LB_TMP_DIR"
         export TMP="$_LB_TMP_DIR"
         export PIP_CACHE_DIR="$_LB_PIP_CACHE_DIR"
 
         _lb_python_meta() {{
-          "$_LB_SYSTEM_PYTHON" - <<'PY'
+          python - <<'PY'
         import hashlib
         import json
         import os
@@ -207,26 +201,15 @@ def wrap_python_command_with_env(command: str, *, mount_path: str = '/workspace'
           _LB_LOCK_WAIT=0
           while ! mkdir "$_LB_LOCK_DIR" 2>/dev/null; do
             if [ "$_LB_LOCK_WAIT" -ge 120 ]; then
-              _LB_LOCK_OWNER="$(cat "$_LB_LOCK_DIR/pid" 2>/dev/null || true)"
-              if [ -n "$_LB_LOCK_OWNER" ] && kill -0 "$_LB_LOCK_OWNER" 2>/dev/null; then
-                echo "Timed out waiting for active Python environment lock: $_LB_LOCK_DIR" >&2
-                exit 1
-              fi
-              echo "Timed out waiting for Python environment lock, clearing stale lock: $_LB_LOCK_DIR" >&2
-              rm -rf "$_LB_LOCK_DIR" 2>/dev/null || true
-              if mkdir "$_LB_LOCK_DIR" 2>/dev/null; then
-                break
-              fi
               echo "Timed out waiting for Python environment lock: $_LB_LOCK_DIR" >&2
               exit 1
             fi
             sleep 1
             _LB_LOCK_WAIT=$((_LB_LOCK_WAIT + 1))
           done
-          printf '%s\\n' "$$" > "$_LB_LOCK_DIR/pid" 2>/dev/null || true
 
           _lb_cleanup_lock() {{
-            rm -rf "$_LB_LOCK_DIR" >/dev/null 2>&1 || true
+            rmdir "$_LB_LOCK_DIR" >/dev/null 2>&1 || true
           }}
           trap _lb_cleanup_lock EXIT INT TERM
 
@@ -242,7 +225,7 @@ def wrap_python_command_with_env(command: str, *, mount_path: str = '/workspace'
 
           if [ "$_LB_NEEDS_BOOTSTRAP" -eq 1 ]; then
             rm -rf "$_LB_VENV_DIR"
-            "$_LB_SYSTEM_PYTHON" -m venv "$_LB_VENV_DIR"
+            python -m venv "$_LB_VENV_DIR"
             . "$_LB_VENV_DIR/bin/activate"
             python -m pip install --upgrade pip setuptools wheel
             if [ -f "{mount_path}/requirements.txt" ]; then

src/langbot/pkg/entity/persistence/monitoring.py

@@ -3,6 +3,49 @@ import sqlalchemy
 from .base import Base
 
 
+class MonitoringTrace(Base):
+    """End-to-end monitoring trace records"""
+
+    __tablename__ = 'monitoring_traces'
+
+    trace_id = sqlalchemy.Column(sqlalchemy.String(255), primary_key=True)
+    started_at = sqlalchemy.Column(sqlalchemy.DateTime, nullable=False, index=True)
+    ended_at = sqlalchemy.Column(sqlalchemy.DateTime, nullable=True, index=True)
+    duration = sqlalchemy.Column(sqlalchemy.Integer, nullable=True)  # milliseconds
+    status = sqlalchemy.Column(sqlalchemy.String(50), nullable=False, index=True)  # running, success, error
+    name = sqlalchemy.Column(sqlalchemy.String(255), nullable=False)
+    bot_id = sqlalchemy.Column(sqlalchemy.String(255), nullable=True, index=True)
+    bot_name = sqlalchemy.Column(sqlalchemy.String(255), nullable=True)
+    pipeline_id = sqlalchemy.Column(sqlalchemy.String(255), nullable=True, index=True)
+    pipeline_name = sqlalchemy.Column(sqlalchemy.String(255), nullable=True)
+    session_id = sqlalchemy.Column(sqlalchemy.String(255), nullable=True, index=True)
+    message_id = sqlalchemy.Column(sqlalchemy.String(255), nullable=True, index=True)
+    query_id = sqlalchemy.Column(sqlalchemy.String(255), nullable=True, index=True)
+    attributes = sqlalchemy.Column(sqlalchemy.Text, nullable=True)
+
+
+class MonitoringSpan(Base):
+    """Trace span records for pipeline, RAG, model, plugin and tool operations"""
+
+    __tablename__ = 'monitoring_spans'
+
+    span_id = sqlalchemy.Column(sqlalchemy.String(255), primary_key=True)
+    trace_id = sqlalchemy.Column(sqlalchemy.String(255), nullable=False, index=True)
+    parent_span_id = sqlalchemy.Column(sqlalchemy.String(255), nullable=True, index=True)
+    name = sqlalchemy.Column(sqlalchemy.String(255), nullable=False)
+    kind = sqlalchemy.Column(sqlalchemy.String(80), nullable=False, index=True)
+    status = sqlalchemy.Column(sqlalchemy.String(50), nullable=False, index=True)
+    started_at = sqlalchemy.Column(sqlalchemy.DateTime, nullable=False, index=True)
+    ended_at = sqlalchemy.Column(sqlalchemy.DateTime, nullable=True)
+    duration = sqlalchemy.Column(sqlalchemy.Integer, nullable=True)  # milliseconds
+    message_id = sqlalchemy.Column(sqlalchemy.String(255), nullable=True, index=True)
+    session_id = sqlalchemy.Column(sqlalchemy.String(255), nullable=True, index=True)
+    bot_id = sqlalchemy.Column(sqlalchemy.String(255), nullable=True, index=True)
+    pipeline_id = sqlalchemy.Column(sqlalchemy.String(255), nullable=True, index=True)
+    attributes = sqlalchemy.Column(sqlalchemy.Text, nullable=True)
+    error_message = sqlalchemy.Column(sqlalchemy.Text, nullable=True)
+
+
 class MonitoringMessage(Base):
     """Monitoring message records"""
 

src/langbot/pkg/persistence/alembic/versions/0006_monitoring_traces.py

@@ -0,0 +1,88 @@
+"""add monitoring traces and spans
+
+Revision ID: 0006_monitoring_traces
+Revises: 0005_add_llm_context_length
+Create Date: 2026-06-16
+"""
+
+import sqlalchemy as sa
+from alembic import op
+
+revision = '0006_monitoring_traces'
+down_revision = '0005_add_llm_context_length'
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    conn = op.get_bind()
+    inspector = sa.inspect(conn)
+    tables = set(inspector.get_table_names())
+
+    if 'monitoring_traces' not in tables:
+        op.create_table(
+            'monitoring_traces',
+            sa.Column('trace_id', sa.String(length=255), nullable=False),
+            sa.Column('started_at', sa.DateTime(), nullable=False),
+            sa.Column('ended_at', sa.DateTime(), nullable=True),
+            sa.Column('duration', sa.Integer(), nullable=True),
+            sa.Column('status', sa.String(length=50), nullable=False),
+            sa.Column('name', sa.String(length=255), nullable=False),
+            sa.Column('bot_id', sa.String(length=255), nullable=True),
+            sa.Column('bot_name', sa.String(length=255), nullable=True),
+            sa.Column('pipeline_id', sa.String(length=255), nullable=True),
+            sa.Column('pipeline_name', sa.String(length=255), nullable=True),
+            sa.Column('session_id', sa.String(length=255), nullable=True),
+            sa.Column('message_id', sa.String(length=255), nullable=True),
+            sa.Column('query_id', sa.String(length=255), nullable=True),
+            sa.Column('attributes', sa.Text(), nullable=True),
+            sa.PrimaryKeyConstraint('trace_id'),
+        )
+        op.create_index('ix_monitoring_traces_started_at', 'monitoring_traces', ['started_at'])
+        op.create_index('ix_monitoring_traces_ended_at', 'monitoring_traces', ['ended_at'])
+        op.create_index('ix_monitoring_traces_status', 'monitoring_traces', ['status'])
+        op.create_index('ix_monitoring_traces_bot_id', 'monitoring_traces', ['bot_id'])
+        op.create_index('ix_monitoring_traces_pipeline_id', 'monitoring_traces', ['pipeline_id'])
+        op.create_index('ix_monitoring_traces_session_id', 'monitoring_traces', ['session_id'])
+        op.create_index('ix_monitoring_traces_message_id', 'monitoring_traces', ['message_id'])
+        op.create_index('ix_monitoring_traces_query_id', 'monitoring_traces', ['query_id'])
+
+    if 'monitoring_spans' not in tables:
+        op.create_table(
+            'monitoring_spans',
+            sa.Column('span_id', sa.String(length=255), nullable=False),
+            sa.Column('trace_id', sa.String(length=255), nullable=False),
+            sa.Column('parent_span_id', sa.String(length=255), nullable=True),
+            sa.Column('name', sa.String(length=255), nullable=False),
+            sa.Column('kind', sa.String(length=80), nullable=False),
+            sa.Column('status', sa.String(length=50), nullable=False),
+            sa.Column('started_at', sa.DateTime(), nullable=False),
+            sa.Column('ended_at', sa.DateTime(), nullable=True),
+            sa.Column('duration', sa.Integer(), nullable=True),
+            sa.Column('message_id', sa.String(length=255), nullable=True),
+            sa.Column('session_id', sa.String(length=255), nullable=True),
+            sa.Column('bot_id', sa.String(length=255), nullable=True),
+            sa.Column('pipeline_id', sa.String(length=255), nullable=True),
+            sa.Column('attributes', sa.Text(), nullable=True),
+            sa.Column('error_message', sa.Text(), nullable=True),
+            sa.PrimaryKeyConstraint('span_id'),
+        )
+        op.create_index('ix_monitoring_spans_trace_id', 'monitoring_spans', ['trace_id'])
+        op.create_index('ix_monitoring_spans_parent_span_id', 'monitoring_spans', ['parent_span_id'])
+        op.create_index('ix_monitoring_spans_kind', 'monitoring_spans', ['kind'])
+        op.create_index('ix_monitoring_spans_status', 'monitoring_spans', ['status'])
+        op.create_index('ix_monitoring_spans_started_at', 'monitoring_spans', ['started_at'])
+        op.create_index('ix_monitoring_spans_message_id', 'monitoring_spans', ['message_id'])
+        op.create_index('ix_monitoring_spans_session_id', 'monitoring_spans', ['session_id'])
+        op.create_index('ix_monitoring_spans_bot_id', 'monitoring_spans', ['bot_id'])
+        op.create_index('ix_monitoring_spans_pipeline_id', 'monitoring_spans', ['pipeline_id'])
+
+
+def downgrade() -> None:
+    conn = op.get_bind()
+    inspector = sa.inspect(conn)
+    tables = set(inspector.get_table_names())
+    if 'monitoring_spans' in tables:
+        op.drop_table('monitoring_spans')
+    if 'monitoring_traces' in tables:
+        op.drop_table('monitoring_traces')

src/langbot/pkg/pipeline/pipelinemgr.py

@@ -2,6 +2,9 @@ from __future__ import annotations
 
 import typing
 import traceback
+import time
+import uuid
+import datetime
 
 import sqlalchemy
 
@@ -79,6 +82,19 @@ class RuntimePipeline:
     enable_all_plugins: bool
     """是否启用所有插件"""
 
+    @staticmethod
+    def _new_span_id() -> str:
+        return f'span-{uuid.uuid4().hex[:16]}'
+
+    @staticmethod
+    def _utc_now() -> datetime.datetime:
+        return datetime.datetime.now(datetime.timezone.utc).replace(tzinfo=None)
+
+    @staticmethod
+    def _query_session_id(query: pipeline_query.Query) -> str:
+        launcher_type = query.launcher_type.value if hasattr(query.launcher_type, 'value') else str(query.launcher_type)
+        return f'{launcher_type}_{query.launcher_id}'
+
     enable_all_mcp_servers: bool
     """是否启用所有MCP服务器"""
 
@@ -234,44 +250,92 @@ class RuntimePipeline:
             stage_container = self.stage_containers[i]
 
             query.current_stage_name = stage_container.inst_name  # 标记到 Query 对象里
+            span_started_at = self._utc_now()
+            span_started = time.perf_counter()
+            span_status = 'success'
+            span_error = None
+            span_result_type = None
 
-            result = stage_container.inst.process(query, stage_container.inst_name)
+            try:
+                result = stage_container.inst.process(query, stage_container.inst_name)
 
-            if isinstance(result, typing.Coroutine):
-                result = await result
+                if isinstance(result, typing.Coroutine):
+                    result = await result
 
-            if isinstance(result, pipeline_entities.StageProcessResult):  # 直接返回结果
-                self.ap.logger.debug(
-                    f'Stage {stage_container.inst_name} processed query {query.query_id} res {result.result_type}'
-                )
-                await self._check_output(query, result)
-
-                if result.result_type == pipeline_entities.ResultType.INTERRUPT:
-                    self.ap.logger.debug(f'Stage {stage_container.inst_name} interrupted query {query.query_id}')
-                    break
-                elif result.result_type == pipeline_entities.ResultType.CONTINUE:
-                    query = result.new_query
-            elif isinstance(result, typing.AsyncGenerator):  # 生成器
-                self.ap.logger.debug(f'Stage {stage_container.inst_name} processed query {query.query_id} gen')
-
-                async for sub_result in result:
+                if isinstance(result, pipeline_entities.StageProcessResult):  # 直接返回结果
+                    span_result_type = str(result.result_type.value if hasattr(result.result_type, 'value') else result.result_type)
                     self.ap.logger.debug(
-                        f'Stage {stage_container.inst_name} processed query {query.query_id} res {sub_result.result_type}'
+                        f'Stage {stage_container.inst_name} processed query {query.query_id} res {result.result_type}'
                     )
-                    await self._check_output(query, sub_result)
+                    await self._check_output(query, result)
 
-                    if sub_result.result_type == pipeline_entities.ResultType.INTERRUPT:
+                    if result.result_type == pipeline_entities.ResultType.INTERRUPT:
                         self.ap.logger.debug(f'Stage {stage_container.inst_name} interrupted query {query.query_id}')
                         break
-                    elif sub_result.result_type == pipeline_entities.ResultType.CONTINUE:
-                        query = sub_result.new_query
-                        await self._execute_from_stage(i + 1, query)
-                break
+                    elif result.result_type == pipeline_entities.ResultType.CONTINUE:
+                        query = result.new_query
+                elif isinstance(result, typing.AsyncGenerator):  # 生成器
+                    span_result_type = 'generator'
+                    self.ap.logger.debug(f'Stage {stage_container.inst_name} processed query {query.query_id} gen')
+
+                    async for sub_result in result:
+                        span_result_type = str(
+                            sub_result.result_type.value
+                            if hasattr(sub_result.result_type, 'value')
+                            else sub_result.result_type
+                        )
+                        self.ap.logger.debug(
+                            f'Stage {stage_container.inst_name} processed query {query.query_id} res {sub_result.result_type}'
+                        )
+                        await self._check_output(query, sub_result)
+
+                        if sub_result.result_type == pipeline_entities.ResultType.INTERRUPT:
+                            self.ap.logger.debug(f'Stage {stage_container.inst_name} interrupted query {query.query_id}')
+                            break
+                        elif sub_result.result_type == pipeline_entities.ResultType.CONTINUE:
+                            query = sub_result.new_query
+                            await self._execute_from_stage(i + 1, query)
+                    break
+            except Exception as e:
+                span_status = 'error'
+                span_error = str(e)
+                raise
+            finally:
+                trace_id = (query.variables or {}).get('_monitoring_trace_id')
+                root_span_id = (query.variables or {}).get('_monitoring_root_span_id')
+                if trace_id:
+                    try:
+                        await self.ap.monitoring_service.record_span(
+                            trace_id=trace_id,
+                            parent_span_id=root_span_id,
+                            name=stage_container.inst_name,
+                            kind='pipeline.stage',
+                            status=span_status,
+                            started_at=span_started_at,
+                            duration=int((time.perf_counter() - span_started) * 1000),
+                            message_id=(query.variables or {}).get('_monitoring_message_id'),
+                            session_id=self._query_session_id(query),
+                            bot_id=query.bot_uuid,
+                            pipeline_id=self.pipeline_entity.uuid,
+                            attributes={
+                                'stage_class': stage_container.inst.__class__.__name__,
+                                'result_type': span_result_type,
+                                'query_id': query.query_id,
+                            },
+                            error_message=span_error,
+                        )
+                    except Exception as monitor_err:
+                        self.ap.logger.error(f'Failed to record stage span: {monitor_err}')
 
             i += 1
 
     async def process_query(self, query: pipeline_query.Query):
         """处理请求"""
+        trace_started_at = self._utc_now()
+        trace_started = time.perf_counter()
+        root_span_id = self._new_span_id()
+        trace_id = None
+        trace_status = 'success'
         # Get monitoring metadata
         bot_name = query.variables.get('_monitoring_bot_name', 'Unknown')
         pipeline_name = query.variables.get('_monitoring_pipeline_name', 'Unknown')
@@ -303,6 +367,28 @@ class RuntimePipeline:
         except Exception as e:
             self.ap.logger.error(f'Failed to record query start: {e}')
 
+        try:
+            trace_id = await self.ap.monitoring_service.start_trace(
+                name='LangBot query',
+                bot_id=query.bot_uuid or 'unknown',
+                bot_name=bot_name,
+                pipeline_id=self.pipeline_entity.uuid,
+                pipeline_name=pipeline_name,
+                session_id=self._query_session_id(query),
+                message_id=message_id or None,
+                query_id=query.query_id,
+                attributes={
+                    'launcher_type': query.launcher_type.value
+                    if hasattr(query.launcher_type, 'value')
+                    else str(query.launcher_type),
+                    'runner_name': runner_name,
+                },
+            )
+            query.variables['_monitoring_trace_id'] = trace_id
+            query.variables['_monitoring_root_span_id'] = root_span_id
+        except Exception as e:
+            self.ap.logger.error(f'Failed to start query trace: {e}')
+
         try:
             # Get bound plugins for this pipeline
             bound_plugins = query.variables.get('_pipeline_bound_plugins', None)
@@ -361,6 +447,7 @@ class RuntimePipeline:
                     self.ap.logger.error(f'Failed to record query response: {e}')
 
         except Exception as e:
+            trace_status = 'error'
             inst_name = query.current_stage_name if query.current_stage_name else 'unknown'
             self.ap.logger.error(f'Error processing query {query.query_id} stage={inst_name} : {e}')
             self.ap.logger.error(f'Traceback: {traceback.format_exc()}')
@@ -383,6 +470,35 @@ class RuntimePipeline:
                 self.ap.logger.error(f'Failed to record query error: {me}')
 
         finally:
+            if trace_id:
+                try:
+                    duration_ms = int((time.perf_counter() - trace_started) * 1000)
+                    await self.ap.monitoring_service.record_span(
+                        trace_id=trace_id,
+                        span_id=root_span_id,
+                        name='LangBot query',
+                        kind='pipeline.query',
+                        status=trace_status,
+                        started_at=trace_started_at,
+                        duration=duration_ms,
+                        message_id=message_id or None,
+                        session_id=self._query_session_id(query),
+                        bot_id=query.bot_uuid,
+                        pipeline_id=self.pipeline_entity.uuid,
+                        attributes={
+                            'query_id': query.query_id,
+                            'pipeline_name': pipeline_name,
+                            'runner_name': runner_name,
+                        },
+                    )
+                    await self.ap.monitoring_service.finish_trace(
+                        trace_id=trace_id,
+                        status=trace_status,
+                        duration=duration_ms,
+                        message_id=message_id or None,
+                    )
+                except Exception as monitor_err:
+                    self.ap.logger.error(f'Failed to finish query trace: {monitor_err}')
             self.ap.logger.debug(f'Query {query.query_id} processed')
             del self.ap.query_pool.cached_queries[query.query_id]
 

src/langbot/pkg/plugin/connector.py

@@ -711,8 +711,19 @@ class PluginRuntimeConnector(ManagedRuntimeConnector):
         endpoint: str,
         method: str,
         body: Any = None,
+        caller: dict[str, Any] | None = None,
+        headers: dict[str, str] | None = None,
     ) -> dict[str, Any]:
-        return await self.handler.handle_page_api(plugin_author, plugin_name, page_id, endpoint, method, body)
+        return await self.handler.handle_page_api(
+            plugin_author,
+            plugin_name,
+            page_id,
+            endpoint,
+            method,
+            body,
+            caller,
+            headers or {},
+        )
 
     async def get_debug_info(self) -> dict[str, Any]:
         """Get debug information including debug key and WS URL"""

src/langbot/pkg/plugin/handler.py

@@ -755,6 +755,19 @@ class RuntimeConnectionHandler(handler.Handler):
                         'session_name': session_name,
                         'bot_uuid': query.bot_uuid or '',
                         'sender_id': str(query.sender_id),
+                        '_trace_context': {
+                            'trace_id': query.variables.get('_monitoring_trace_id') if query.variables else None,
+                            'parent_span_id': query.variables.get('_monitoring_root_span_id') if query.variables else None,
+                            'message_id': query.variables.get('_monitoring_message_id') if query.variables else None,
+                            'query_id': query.query_id,
+                            'session_id': session_name,
+                            'bot_id': query.bot_uuid or '',
+                            'pipeline_id': query.pipeline_uuid or '',
+                            'knowledge_base_id': kb_id,
+                            'attributes': {
+                                'source': 'plugin-api',
+                            },
+                        },
                     },
                 )
                 results = [entry.model_dump(mode='json') for entry in entries]
@@ -1011,6 +1024,8 @@ class RuntimeConnectionHandler(handler.Handler):
         endpoint: str,
         method: str,
         body: Any = None,
+        caller: dict[str, Any] | None = None,
+        headers: dict[str, str] | None = None,
     ) -> dict[str, Any]:
         """Forward a page API call to the plugin via runtime."""
         result = await self.call_action(
@@ -1022,6 +1037,8 @@ class RuntimeConnectionHandler(handler.Handler):
                 'endpoint': endpoint,
                 'method': method,
                 'body': body,
+                'caller': caller,
+                'headers': headers or {},
             },
             timeout=30,
         )

src/langbot/pkg/provider/modelmgr/requester.py

@@ -3,6 +3,7 @@ from __future__ import annotations
 import abc
 import typing
 import time
+import datetime
 
 from ...core import app
 from ...entity.persistence import model as persistence_model
@@ -16,6 +17,15 @@ LLM_USAGE_QUERY_VARIABLE = '_llm_usage'
 STREAM_USAGE_QUERY_VARIABLE = '_stream_usage'
 
 
+def _utc_now() -> datetime.datetime:
+    return datetime.datetime.now(datetime.timezone.utc).replace(tzinfo=None)
+
+
+def _query_session_id(query: pipeline_query.Query) -> str:
+    launcher_type = query.launcher_type.value if hasattr(query.launcher_type, 'value') else str(query.launcher_type)
+    return f'{launcher_type}_{query.launcher_id}'
+
+
 def _store_llm_usage(query: pipeline_query.Query | None, usage_info: dict | None) -> None:
     """Store the latest provider usage on the query for upstream action handlers."""
     if query is None or not usage_info:
@@ -59,6 +69,7 @@ class RuntimeProvider:
         """Bridge method for invoking LLM with monitoring"""
         # Start timing for monitoring
         start_time = time.time()
+        span_started_at = _utc_now()
         input_tokens = 0
         output_tokens = 0
         status = 'success'
@@ -125,6 +136,30 @@ class RuntimeProvider:
                         error_message=error_message,
                         message_id=message_id,
                     )
+                    trace_id = query.variables.get('_monitoring_trace_id') if query.variables else None
+                    parent_span_id = query.variables.get('_monitoring_root_span_id') if query.variables else None
+                    if trace_id:
+                        await self.requester.ap.monitoring_service.record_span(
+                            trace_id=trace_id,
+                            parent_span_id=parent_span_id,
+                            name=f'LLM {model.model_entity.name}',
+                            kind='model.llm',
+                            status=status,
+                            started_at=span_started_at,
+                            duration=duration_ms,
+                            message_id=message_id,
+                            session_id=_query_session_id(query),
+                            bot_id=query.bot_uuid,
+                            pipeline_id=query.pipeline_uuid,
+                            attributes={
+                                'model_name': model.model_entity.name,
+                                'input_tokens': input_tokens,
+                                'output_tokens': output_tokens,
+                                'total_tokens': input_tokens + output_tokens,
+                                'stream': False,
+                            },
+                            error_message=error_message,
+                        )
                 except Exception as monitor_err:
                     self.requester.ap.logger.error(f'[Monitoring] Failed to record LLM call: {monitor_err}')
 
@@ -140,6 +175,7 @@ class RuntimeProvider:
         """Bridge method for invoking LLM stream with monitoring"""
         # Start timing for monitoring
         start_time = time.time()
+        span_started_at = _utc_now()
         status = 'success'
         error_message = None
         input_tokens = 0
@@ -204,6 +240,30 @@ class RuntimeProvider:
                         error_message=error_message,
                         message_id=message_id,
                     )
+                    trace_id = query.variables.get('_monitoring_trace_id') if query.variables else None
+                    parent_span_id = query.variables.get('_monitoring_root_span_id') if query.variables else None
+                    if trace_id:
+                        await self.requester.ap.monitoring_service.record_span(
+                            trace_id=trace_id,
+                            parent_span_id=parent_span_id,
+                            name=f'LLM stream {model.model_entity.name}',
+                            kind='model.llm',
+                            status=status,
+                            started_at=span_started_at,
+                            duration=duration_ms,
+                            message_id=message_id,
+                            session_id=_query_session_id(query),
+                            bot_id=query.bot_uuid,
+                            pipeline_id=query.pipeline_uuid,
+                            attributes={
+                                'model_name': model.model_entity.name,
+                                'input_tokens': input_tokens,
+                                'output_tokens': output_tokens,
+                                'total_tokens': input_tokens + output_tokens,
+                                'stream': True,
+                            },
+                            error_message=error_message,
+                        )
                 except Exception as monitor_err:
                     self.requester.ap.logger.error(f'[Monitoring] Failed to record LLM stream call: {monitor_err}')
 

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

@@ -268,6 +268,19 @@ class LocalAgentRunner(runner.RequestRunner):
                         'bot_uuid': query.bot_uuid or '',
                         'sender_id': str(query.sender_id),
                         'session_name': f'{query.session.launcher_type.value}_{query.session.launcher_id}',
+                        '_trace_context': {
+                            'trace_id': query.variables.get('_monitoring_trace_id') if query.variables else None,
+                            'parent_span_id': query.variables.get('_monitoring_root_span_id') if query.variables else None,
+                            'message_id': query.variables.get('_monitoring_message_id') if query.variables else None,
+                            'query_id': query.query_id,
+                            'session_id': f'{query.launcher_type.value}_{query.launcher_id}',
+                            'bot_id': query.bot_uuid or '',
+                            'pipeline_id': query.pipeline_uuid or '',
+                            'knowledge_base_id': kb_uuid,
+                            'attributes': {
+                                'source': 'local-agent',
+                            },
+                        },
                     },
                 )
 

src/langbot/pkg/provider/tools/loaders/availability.py

@@ -1,18 +0,0 @@
-from __future__ import annotations
-
-from typing import Any
-
-
-async def is_box_backend_available(ap: Any) -> bool:
-    """Return whether the configured Box backend is ready for tool execution."""
-    box_service = getattr(ap, 'box_service', None)
-    if box_service is None:
-        return False
-    if not getattr(box_service, 'available', False):
-        return False
-    try:
-        status = await box_service.get_status()
-        backend_info = status.get('backend', {})
-        return bool(backend_info.get('available', False))
-    except Exception:
-        return False

src/langbot/pkg/provider/tools/loaders/mcp_stdio.py

@@ -5,8 +5,6 @@ import asyncio
 import os
 import shutil
 import shlex
-import threading
-from contextlib import suppress
 from typing import TYPE_CHECKING, Any
 
 import pydantic
@@ -20,26 +18,12 @@ from ....box.workspace import (
     rewrite_mounted_path,
     rewrite_venv_command,
     unwrap_venv_path,
-    wrap_python_command_with_env,
 )
 
 if TYPE_CHECKING:
     from .mcp import RuntimeMCPSession
 
 
-_WORKSPACE_COPY_LOCKS: dict[str, threading.Lock] = {}
-_WORKSPACE_COPY_LOCKS_GUARD = threading.Lock()
-
-
-def _workspace_copy_lock(path: str) -> threading.Lock:
-    with _WORKSPACE_COPY_LOCKS_GUARD:
-        lock = _WORKSPACE_COPY_LOCKS.get(path)
-        if lock is None:
-            lock = threading.Lock()
-            _WORKSPACE_COPY_LOCKS[path] = lock
-        return lock
-
-
 class MCPSessionErrorPhase(enum.Enum):
     """Which phase of the MCP lifecycle failed."""
 
@@ -65,7 +49,7 @@ class MCPServerBoxConfig(pydantic.BaseModel):
     host_path: str | None = None
     host_path_mode: str = 'ro'  # MCP servers default to read-write mount only when explicitly requested
     env: dict[str, str] = pydantic.Field(default_factory=dict)
-    startup_timeout_sec: int = 300  # First Docker bootstrap may need to build a venv and install MCP deps.
+    startup_timeout_sec: int = 120  # Longer default to allow dependency bootstrap
     cpus: float | None = None
     memory_mb: int | None = None
     pids_limit: int | None = None
@@ -144,7 +128,6 @@ class BoxStdioSessionRuntime:
         workspace = self._build_workspace(host_path=None)
         host_path = self.resolve_host_path()
         process_cwd = '/workspace'
-        install_cmd: str | None = None
 
         try:
             await workspace.create_session()
@@ -185,8 +168,6 @@ class BoxStdioSessionRuntime:
                 env=self.server_config.get('env', {}),
                 cwd=process_cwd,
             )
-            if install_cmd:
-                payload = self._wrap_process_payload_with_python_env(payload, process_cwd)
             payload['process_id'] = self.process_id
             await workspace.box_service.start_managed_process(workspace.session_id, payload)
         except Exception:
@@ -272,42 +253,14 @@ class BoxStdioSessionRuntime:
 
     @staticmethod
     def _copy_workspace_tree(source_path: str, process_host_root: str, process_host_workspace: str) -> None:
-        # Docker-backed bootstrap writes root-owned runtime directories such as
-        # .venv/.tmp into the staged workspace. The host process may not be able
-        # to delete them, so refresh source files in place and preserve runtime
-        # directories instead of rmtree'ing the whole staging root.
-        with _workspace_copy_lock(process_host_root):
-            preserved_names = {'.venv', 'venv', 'env', '.cache', '.tmp', '.langbot'}
-            os.makedirs(process_host_workspace, exist_ok=True)
-            for name in os.listdir(process_host_workspace):
-                if name in preserved_names:
-                    continue
-                path = os.path.join(process_host_workspace, name)
-                if os.path.isdir(path) and not os.path.islink(path):
-                    shutil.rmtree(path, ignore_errors=True)
-                else:
-                    # The entry may disappear between listdir and unlink if cleanup races us.
-                    with suppress(FileNotFoundError):
-                        os.unlink(path)
-            shutil.copytree(
-                source_path,
-                process_host_workspace,
-                symlinks=True,
-                dirs_exist_ok=True,
-                ignore=shutil.ignore_patterns(
-                    '.git',
-                    '__pycache__',
-                    '.pytest_cache',
-                    '.mypy_cache',
-                    '.ruff_cache',
-                    '.venv',
-                    'venv',
-                    'env',
-                    '.cache',
-                    '.tmp',
-                    '.langbot',
-                ),
-            )
+        shutil.rmtree(process_host_root, ignore_errors=True)
+        os.makedirs(process_host_root, exist_ok=True)
+        shutil.copytree(
+            source_path,
+            process_host_workspace,
+            symlinks=True,
+            ignore=shutil.ignore_patterns('.git', '__pycache__', '.pytest_cache', '.mypy_cache', '.ruff_cache'),
+        )
 
     async def _cleanup_staged_workspace(self) -> None:
         if not self.resolve_host_path():
@@ -390,25 +343,23 @@ class BoxStdioSessionRuntime:
     @staticmethod
     def detect_install_command(host_path: str, workspace_path: str = '/workspace') -> str | None:
         workspace_kind = classify_python_workspace(host_path)
-        if workspace_kind in {'package', 'requirements'}:
-            return wrap_python_command_with_env('python -c "pass"', mount_path=workspace_path).rstrip()
+        quoted_workspace_path = shlex.quote(workspace_path)
+        if workspace_kind == 'package':
+            return (
+                'mkdir -p /opt/_lb_src'
+                f' && tar -C {quoted_workspace_path}'
+                ' --exclude=.venv --exclude=.git --exclude=__pycache__'
+                ' --exclude=node_modules --exclude=.tox --exclude=.nox'
+                ' --exclude="*.egg-info" --exclude=.uv-cache'
+                ' -cf - .'
+                ' | tar -C /opt/_lb_src -xf -'
+                ' && pip install --no-cache-dir /opt/_lb_src'
+                ' && rm -rf /opt/_lb_src'
+            )
+        if workspace_kind == 'requirements':
+            return f'pip install --no-cache-dir -r {quoted_workspace_path}/requirements.txt'
         return None
 
-    @staticmethod
-    def _wrap_process_payload_with_python_env(payload: dict[str, Any], workspace_path: str) -> dict[str, Any]:
-        """Start a prepared Python workspace without writing bootstrap output to MCP stdio."""
-        workspace_root = workspace_path.rstrip('/') or '/workspace'
-        venv_dir = f'{workspace_root}/.venv'
-        venv_bin = f'{venv_dir}/bin'
-        command = ' '.join([shlex.quote(payload['command']), *[shlex.quote(arg) for arg in payload.get('args', [])]])
-        wrapped = dict(payload)
-        wrapped['command'] = 'sh'
-        wrapped['args'] = [
-            '-lc',
-            (f'export VIRTUAL_ENV={shlex.quote(venv_dir)}; export PATH={shlex.quote(venv_bin)}:$PATH; exec {command}'),
-        ]
-        return wrapped
-
     def build_box_session_payload(self, session_id: str, host_path: str | None = None) -> dict[str, Any]:
         workspace = self._build_workspace()
         workspace.session_id = session_id

src/langbot/pkg/provider/tools/loaders/native.py

@@ -8,7 +8,6 @@ from langbot_plugin.api.entities.events import pipeline_query
 
 from .. import loader
 from ..errors import ToolNotFoundError
-from .availability import is_box_backend_available
 from . import skill as skill_loader
 
 EXEC_TOOL_NAME = 'exec'
@@ -23,15 +22,6 @@ _ALL_TOOL_NAMES = {EXEC_TOOL_NAME, READ_TOOL_NAME, WRITE_TOOL_NAME, EDIT_TOOL_NA
 # Skip these dirs during grep walk to avoid noise
 _SKIP_DIRS = {'.git', 'node_modules', '__pycache__', '.venv', 'venv', '.tox', 'dist', 'build'}
 
-_DEFAULT_READ_MAX_LINES = 2000
-_MAX_READ_MAX_LINES = 10000
-_DEFAULT_TOOL_RESULT_MAX_BYTES = 50 * 1024
-_BOX_FILE_SCRIPT_MAX_BYTES = 2048
-_GLOB_MAX_MATCHES = 100
-_GREP_MAX_MATCHES = 200
-_GREP_MAX_FILES = 5000
-_GREP_MAX_LINE_CHARS = 500
-
 
 class NativeToolLoader(loader.ToolLoader):
     def __init__(self, ap):
@@ -53,7 +43,18 @@ class NativeToolLoader(loader.ToolLoader):
 
     async def _check_backend_available(self) -> bool:
         """Check if the box backend is truly available (not just the runtime)."""
-        return await is_box_backend_available(self.ap)
+        box_service = getattr(self.ap, 'box_service', None)
+        if box_service is None:
+            return False
+        if not getattr(box_service, 'available', False):
+            return False
+        # Check if backend is truly available via get_status
+        try:
+            status = await box_service.get_status()
+            backend_info = status.get('backend', {})
+            return backend_info.get('available', False)
+        except Exception:
+            return False
 
     async def get_tools(self, bound_plugins: list[str] | None = None) -> list[resource_tool.LLMTool]:
         if not self._is_sandbox_available():
@@ -138,7 +139,6 @@ class NativeToolLoader(loader.ToolLoader):
         # via execute_tool. Skills are mounted at /workspace/.skills/{name}/
         # via extra_mounts built by BoxService.
         result = await self.ap.box_service.execute_tool(parameters, query)
-        result = self._normalize_exec_result(result)
 
         if selected_skill is not None:
             self._refresh_skill_from_disk(selected_skill)
@@ -227,65 +227,19 @@ class NativeToolLoader(loader.ToolLoader):
         except Exception:
             return {'ok': False, 'error': stdout or 'Box file operation returned no result'}
 
-    async def _read_workspace_via_box(self, path: str, parameters: dict, query: pipeline_query.Query) -> dict:
-        offset = self._positive_int(parameters.get('offset'), default=1)
-        max_lines = self._positive_int(
-            parameters.get('limit'),
-            default=_DEFAULT_READ_MAX_LINES,
-            max_value=_MAX_READ_MAX_LINES,
-        )
-        # Box file fallback returns through exec stdout, which is already capped
-        # by BoxService. Keep this payload small enough to remain valid JSON.
-        max_bytes = min(
-            self._positive_int(parameters.get('max_bytes'), default=_DEFAULT_TOOL_RESULT_MAX_BYTES),
-            _BOX_FILE_SCRIPT_MAX_BYTES,
-        )
+    async def _read_workspace_via_box(self, path: str, query: pipeline_query.Query) -> dict:
         script = f"""
 import json, os
 path = {json.dumps(path)}
-offset = {offset}
-max_lines = {max_lines}
-max_bytes = {max_bytes}
 if not path.startswith('/workspace'):
     print(json.dumps({{'ok': False, 'error': 'Path must be under /workspace.'}}))
 elif not os.path.exists(path):
     print(json.dumps({{'ok': False, 'error': f'File not found: {{path}}'}}))
 elif os.path.isdir(path):
-    entries = sorted(os.listdir(path))
-    content = '\\n'.join(entries)
-    print(json.dumps({{'ok': True, 'content': content, 'is_directory': True, 'total': len(entries), 'truncated': False}}))
+    print(json.dumps({{'ok': True, 'content': '\\n'.join(sorted(os.listdir(path))), 'is_directory': True}}))
 else:
-    lines = []
-    output_bytes = 0
-    end_line = offset - 1
-    truncated = False
-    next_offset = None
     with open(path, 'r', encoding='utf-8', errors='replace') as f:
-        for line_number, line in enumerate(f, 1):
-            if line_number < offset:
-                continue
-            if len(lines) >= max_lines:
-                truncated = True
-                next_offset = line_number
-                break
-            line_bytes = len(line.encode('utf-8'))
-            if output_bytes + line_bytes > max_bytes:
-                truncated = True
-                next_offset = line_number
-                break
-            lines.append(line.rstrip('\\n'))
-            output_bytes += line_bytes
-            end_line = line_number
-    print(json.dumps({{
-        'ok': True,
-        'content': '\\n'.join(lines),
-        'truncated': truncated,
-        'start_line': offset,
-        'end_line': end_line,
-        'next_offset': next_offset,
-        'max_lines': max_lines,
-        'max_bytes': max_bytes,
-    }}))
+        print(json.dumps({{'ok': True, 'content': f.read()}}))
 """.strip()
         return await self._run_workspace_file_script(script, query)
 
@@ -353,27 +307,12 @@ else:
         if not any(part in skip_dirs for part in item.parts)
     ]
     hits.sort(key=lambda item: item.stat().st_mtime if item.exists() else 0, reverse=True)
-    shown = hits[:{_GLOB_MAX_MATCHES}]
+    shown = hits[:100]
     matches = []
-    output_bytes = 0
-    truncated_by_bytes = False
     for item in shown:
         rel = os.path.relpath(str(item), path)
-        sandbox_path = os.path.join(path, rel).replace(os.sep, '/')
-        entry_bytes = len(sandbox_path.encode('utf-8')) + (1 if matches else 0)
-        if output_bytes + entry_bytes > {_DEFAULT_TOOL_RESULT_MAX_BYTES}:
-            truncated_by_bytes = True
-            break
-        matches.append(sandbox_path)
-        output_bytes += entry_bytes
-    print(json.dumps({{
-        'ok': True,
-        'matches': matches,
-        'preview': '\\n'.join(matches),
-        'total': len(hits),
-        'truncated': len(hits) > len(matches) or truncated_by_bytes,
-        'truncated_by': 'bytes' if truncated_by_bytes else ('matches' if len(hits) > len(matches) else None),
-    }}))
+        matches.append(os.path.join(path, rel).replace(os.sep, '/'))
+    print(json.dumps({{'ok': True, 'matches': matches, 'total': len(hits), 'truncated': len(hits) > 100}}))
 """.strip()
         return await self._run_workspace_file_script(script, query)
 
@@ -411,54 +350,29 @@ else:
                     continue
                 if item.is_file():
                     files.append(item)
-                if len(files) >= {_GREP_MAX_FILES}:
+                if len(files) >= 5000:
                     break
 
         matches = []
-        output_bytes = 0
-        truncated_by = None
         for fp in files:
             try:
-                handle = fp.open('r', encoding='utf-8', errors='ignore')
+                text = fp.read_text(errors='ignore')
             except OSError:
                 continue
-            with handle:
-                for lineno, line in enumerate(handle, 1):
-                    if regex.search(line):
-                        if base.is_file():
-                            file_path = path
-                        else:
-                            rel = os.path.relpath(str(fp), path)
-                            file_path = os.path.join(path, rel).replace(os.sep, '/')
-                        content = line.rstrip()
-                        line_truncated = False
-                        if len(content) > {_GREP_MAX_LINE_CHARS}:
-                            content = content[:{_GREP_MAX_LINE_CHARS}] + '... [truncated]'
-                            line_truncated = True
-                        entry = {{'file': file_path, 'line': lineno, 'content': content}}
-                        entry_bytes = len(json.dumps(entry, ensure_ascii=False).encode('utf-8')) + 1
-                        if output_bytes + entry_bytes > {_DEFAULT_TOOL_RESULT_MAX_BYTES}:
-                            truncated_by = 'bytes'
-                            break
-                        if line_truncated and truncated_by is None:
-                            truncated_by = 'line'
-                        matches.append(entry)
-                        output_bytes += entry_bytes
-                        if len(matches) >= {_GREP_MAX_MATCHES}:
-                            truncated_by = truncated_by or 'matches'
-                            break
-                if truncated_by == 'bytes' or len(matches) >= {_GREP_MAX_MATCHES}:
-                    break
-            if truncated_by == 'bytes' or len(matches) >= {_GREP_MAX_MATCHES}:
+            for lineno, line in enumerate(text.splitlines(), 1):
+                if regex.search(line):
+                    if base.is_file():
+                        file_path = path
+                    else:
+                        rel = os.path.relpath(str(fp), path)
+                        file_path = os.path.join(path, rel).replace(os.sep, '/')
+                    matches.append({{'file': file_path, 'line': lineno, 'content': line.rstrip()}})
+                    if len(matches) >= 200:
+                        break
+            if len(matches) >= 200:
                 break
 
-        print(json.dumps({{
-            'ok': True,
-            'matches': matches,
-            'total': len(matches),
-            'truncated': truncated_by is not None,
-            'truncated_by': truncated_by,
-        }}))
+        print(json.dumps({{'ok': True, 'matches': matches, 'total': len(matches), 'truncated': len(matches) >= 200}}))
 """.strip()
         return await self._run_workspace_file_script(script, query)
 
@@ -473,20 +387,14 @@ else:
         )
         if skill_request is not None and hasattr(self.ap.box_service, 'read_skill_file'):
             selected_skill, relative = skill_request
-            host_path = self._resolve_skill_host_path(selected_skill, relative)
-            if host_path and os.path.exists(host_path):
-                if os.path.isdir(host_path):
-                    return self._build_directory_result(os.listdir(host_path))
-                return self._read_text_file_preview(host_path, parameters)
-
             try:
                 result = await self.ap.box_service.read_skill_file(selected_skill['name'], relative)
-                return self._build_read_result_from_text(str(result.get('content', '')), parameters)
+                return {'ok': True, 'content': result.get('content', '')}
             except Exception:
                 try:
                     result = await self.ap.box_service.list_skill_files(selected_skill['name'], relative)
                     entries = [entry['name'] for entry in result.get('entries', [])]
-                    return self._build_directory_result(entries)
+                    return {'ok': True, 'content': '\n'.join(sorted(entries)), 'is_directory': True}
                 except Exception as exc:
                     return {'ok': False, 'error': str(exc)}
 
@@ -497,13 +405,15 @@ else:
             include_activated=True,
         )
         if self._should_use_box_workspace_files(selected_skill):
-            return await self._read_workspace_via_box(path, parameters, query)
+            return await self._read_workspace_via_box(path, query)
         if not os.path.exists(host_path):
             return {'ok': False, 'error': f'File not found: {path}'}
         if os.path.isdir(host_path):
             entries = os.listdir(host_path)
-            return self._build_directory_result(entries)
-        return self._read_text_file_preview(host_path, parameters)
+            return {'ok': True, 'content': '\n'.join(sorted(entries)), 'is_directory': True}
+        with open(host_path, 'r', errors='replace') as f:
+            content = f.read()
+        return {'ok': True, 'content': content}
 
     async def _invoke_write(self, parameters: dict, query: pipeline_query.Query) -> dict:
         path = parameters['path']
@@ -674,28 +584,6 @@ else:
                         'type': 'string',
                         'description': 'Absolute path to the file (must be under /workspace).',
                     },
-                    'offset': {
-                        'type': 'integer',
-                        'description': '1-indexed line number to start reading from. Defaults to 1.',
-                        'default': 1,
-                        'minimum': 1,
-                    },
-                    'limit': {
-                        'type': 'integer',
-                        'description': f'Maximum number of lines to return. Defaults to {_DEFAULT_READ_MAX_LINES}.',
-                        'default': _DEFAULT_READ_MAX_LINES,
-                        'minimum': 1,
-                        'maximum': _MAX_READ_MAX_LINES,
-                    },
-                    'max_bytes': {
-                        'type': 'integer',
-                        'description': (
-                            f'Maximum bytes of file content to return. Defaults to {_DEFAULT_TOOL_RESULT_MAX_BYTES}.'
-                        ),
-                        'default': _DEFAULT_TOOL_RESULT_MAX_BYTES,
-                        'minimum': 1,
-                        'maximum': _DEFAULT_TOOL_RESULT_MAX_BYTES,
-                    },
                 },
                 'required': ['path'],
                 'additionalProperties': False,
@@ -852,30 +740,22 @@ else:
         hits.sort(key=lambda p: p.stat().st_mtime if p.exists() else 0, reverse=True)
 
         total = len(hits)
-        shown = hits[:_GLOB_MAX_MATCHES]
+        shown = hits[:100]
 
         # Convert back to sandbox paths
         sandbox_paths = []
-        output_bytes = 0
-        truncated_by_bytes = False
         for h in shown:
             rel = os.path.relpath(str(h), host_path)
             sandbox_path = os.path.join(path, rel)
-            entry_bytes = len(sandbox_path.encode('utf-8')) + (1 if sandbox_paths else 0)
-            if output_bytes + entry_bytes > _DEFAULT_TOOL_RESULT_MAX_BYTES:
-                truncated_by_bytes = True
-                break
             sandbox_paths.append(sandbox_path)
-            output_bytes += entry_bytes
 
-        return {
-            'ok': True,
-            'matches': sandbox_paths,
-            'preview': '\n'.join(sandbox_paths),
-            'total': total,
-            'truncated': total > len(sandbox_paths) or truncated_by_bytes,
-            'truncated_by': 'bytes' if truncated_by_bytes else ('matches' if total > len(sandbox_paths) else None),
-        }
+        result_lines = sandbox_paths
+        result = '\n'.join(result_lines)
+
+        if total > 100:
+            result += f'\n... ({total} matches, showing first 100)'
+
+        return {'ok': True, 'matches': result_lines, 'total': total, 'truncated': total > 100}
 
     async def _invoke_grep(self, parameters: dict, query: pipeline_query.Query) -> dict:
         pattern = parameters['pattern']
@@ -911,46 +791,32 @@ else:
             files = self._grep_walk(base, include)
 
         matches = []
-        output_bytes = 0
-        truncated_by = None
         for fp in files:
             try:
-                handle = fp.open('r', encoding='utf-8', errors='ignore')
+                text = fp.read_text(errors='ignore')
             except OSError:
                 continue
-            with handle:
-                for lineno, line in enumerate(handle, 1):
-                    if regex.search(line):
-                        rel = os.path.relpath(str(fp), host_path)
-                        sandbox_path = os.path.join(path, rel)
-                        content, line_truncated = self._truncate_grep_line(line.rstrip())
-                        entry = {
+            for lineno, line in enumerate(text.splitlines(), 1):
+                if regex.search(line):
+                    rel = os.path.relpath(str(fp), host_path)
+                    sandbox_path = os.path.join(path, rel)
+                    matches.append(
+                        {
                             'file': sandbox_path,
                             'line': lineno,
-                            'content': content,
+                            'content': line.rstrip(),
                         }
-                        entry_bytes = len(json.dumps(entry, ensure_ascii=False).encode('utf-8')) + 1
-                        if output_bytes + entry_bytes > _DEFAULT_TOOL_RESULT_MAX_BYTES:
-                            truncated_by = 'bytes'
-                            break
-                        if line_truncated and truncated_by is None:
-                            truncated_by = 'line'
-                        matches.append(entry)
-                        output_bytes += entry_bytes
-                        if len(matches) >= _GREP_MAX_MATCHES:
-                            truncated_by = truncated_by or 'matches'
-                            break
-                if truncated_by == 'bytes' or len(matches) >= _GREP_MAX_MATCHES:
-                    break
-            if truncated_by == 'bytes' or len(matches) >= _GREP_MAX_MATCHES:
+                    )
+                    if len(matches) >= 200:
+                        break
+            if len(matches) >= 200:
                 break
 
         return {
             'ok': True,
             'matches': matches,
             'total': len(matches),
-            'truncated': truncated_by is not None,
-            'truncated_by': truncated_by,
+            'truncated': len(matches) >= 200,
         }
 
     @staticmethod
@@ -962,207 +828,10 @@ else:
                 continue
             if item.is_file():
                 results.append(item)
-            if len(results) >= _GREP_MAX_FILES:
+            if len(results) >= 5000:
                 break
         return results
 
-    @staticmethod
-    def _resolve_skill_host_path(selected_skill: dict, relative: str) -> str | None:
-        package_root = str(selected_skill.get('package_root', '') or '').strip()
-        if not package_root:
-            return None
-
-        host_root = os.path.realpath(package_root)
-        host_path = os.path.realpath(os.path.join(host_root, relative))
-        if not (host_path == host_root or host_path.startswith(host_root + os.sep)):
-            raise ValueError('Path escapes the skill package boundary.')
-        return host_path
-
-    def _normalize_exec_result(self, result: dict) -> dict:
-        normalized = dict(result)
-        stdout = str(normalized.get('stdout') or '')
-        stderr = str(normalized.get('stderr') or '')
-        stdout, stdout_capped = self._truncate_text_to_bytes_with_flag(stdout, _DEFAULT_TOOL_RESULT_MAX_BYTES)
-        stderr, stderr_capped = self._truncate_text_to_bytes_with_flag(stderr, _DEFAULT_TOOL_RESULT_MAX_BYTES)
-        normalized['stdout'] = stdout
-        normalized['stderr'] = stderr
-        normalized['stdout_truncated'] = bool(normalized.get('stdout_truncated') or stdout_capped)
-        normalized['stderr_truncated'] = bool(normalized.get('stderr_truncated') or stderr_capped)
-
-        if stdout and stderr:
-            preview_raw = f'stdout:\n{stdout}\n\nstderr:\n{stderr}'
-        else:
-            preview_raw = stdout or stderr
-        preview, preview_capped = self._truncate_text_to_bytes_with_flag(preview_raw, _DEFAULT_TOOL_RESULT_MAX_BYTES)
-        normalized['preview'] = preview
-        normalized['truncated'] = bool(
-            normalized['stdout_truncated'] or normalized['stderr_truncated'] or preview_capped
-        )
-        if preview_capped and not normalized.get('truncated_by'):
-            normalized['truncated_by'] = 'bytes'
-        return normalized
-
-    def _build_directory_result(self, entries: list[str]) -> dict:
-        sorted_entries = sorted(str(entry) for entry in entries)
-        content = '\n'.join(sorted_entries)
-        preview = self._truncate_text_to_bytes(content, _DEFAULT_TOOL_RESULT_MAX_BYTES)
-        truncated = preview != content
-        return {
-            'ok': True,
-            'content': preview,
-            'is_directory': True,
-            'total': len(sorted_entries),
-            'truncated': truncated,
-            'truncated_by': 'bytes' if truncated else None,
-        }
-
-    def _read_text_file_preview(self, host_path: str, parameters: dict) -> dict:
-        offset = self._positive_int(parameters.get('offset'), default=1)
-        max_lines = self._positive_int(
-            parameters.get('limit'),
-            default=_DEFAULT_READ_MAX_LINES,
-            max_value=_MAX_READ_MAX_LINES,
-        )
-        max_bytes = self._positive_int(
-            parameters.get('max_bytes'),
-            default=_DEFAULT_TOOL_RESULT_MAX_BYTES,
-            max_value=_DEFAULT_TOOL_RESULT_MAX_BYTES,
-        )
-        lines: list[str] = []
-        output_bytes = 0
-        end_line = offset - 1
-        truncated = False
-        truncated_by: str | None = None
-        next_offset: int | None = None
-
-        with open(host_path, 'r', encoding='utf-8', errors='replace') as f:
-            for line_number, line in enumerate(f, 1):
-                if line_number < offset:
-                    continue
-                if len(lines) >= max_lines:
-                    truncated = True
-                    truncated_by = 'lines'
-                    next_offset = line_number
-                    break
-
-                line_bytes = len(line.encode('utf-8'))
-                if output_bytes + line_bytes > max_bytes:
-                    truncated = True
-                    truncated_by = 'bytes'
-                    next_offset = line_number
-                    break
-
-                lines.append(line.rstrip('\n'))
-                output_bytes += line_bytes
-                end_line = line_number
-
-        if not lines and truncated_by == 'bytes':
-            content = (
-                f'[Line {next_offset or offset} exceeds the {self._format_size(max_bytes)} read limit. '
-                'Use exec with a byte-range command for this line, or read a different offset.]'
-            )
-        else:
-            content = '\n'.join(lines)
-
-        return {
-            'ok': True,
-            'content': content,
-            'truncated': truncated,
-            'truncated_by': truncated_by,
-            'start_line': offset,
-            'end_line': end_line,
-            'next_offset': next_offset,
-            'max_lines': max_lines,
-            'max_bytes': max_bytes,
-        }
-
-    def _build_read_result_from_text(self, content: str, parameters: dict) -> dict:
-        offset = self._positive_int(parameters.get('offset'), default=1)
-        max_lines = self._positive_int(
-            parameters.get('limit'),
-            default=_DEFAULT_READ_MAX_LINES,
-            max_value=_MAX_READ_MAX_LINES,
-        )
-        max_bytes = self._positive_int(
-            parameters.get('max_bytes'),
-            default=_DEFAULT_TOOL_RESULT_MAX_BYTES,
-            max_value=_DEFAULT_TOOL_RESULT_MAX_BYTES,
-        )
-        all_lines = content.splitlines()
-        start_index = offset - 1
-        if start_index >= len(all_lines) and all_lines:
-            return {'ok': False, 'error': f'Offset {offset} is beyond end of file ({len(all_lines)} lines total)'}
-        output_lines: list[str] = []
-        output_bytes = 0
-        truncated = False
-        truncated_by: str | None = None
-        next_offset: int | None = None
-        for index, line in enumerate(all_lines[start_index:], start_index + 1):
-            if len(output_lines) >= max_lines:
-                truncated = True
-                truncated_by = 'lines'
-                next_offset = index
-                break
-            line_bytes = len(line.encode('utf-8')) + (1 if output_lines else 0)
-            if output_bytes + line_bytes > max_bytes:
-                truncated = True
-                truncated_by = 'bytes'
-                next_offset = index
-                break
-            output_lines.append(line)
-            output_bytes += line_bytes
-
-        end_line = offset + len(output_lines) - 1
-        return {
-            'ok': True,
-            'content': '\n'.join(output_lines),
-            'truncated': truncated,
-            'truncated_by': truncated_by,
-            'start_line': offset,
-            'end_line': end_line,
-            'next_offset': next_offset,
-            'max_lines': max_lines,
-            'max_bytes': max_bytes,
-        }
-
-    @staticmethod
-    def _positive_int(value, *, default: int, max_value: int | None = None) -> int:
-        try:
-            parsed = int(value)
-        except (TypeError, ValueError):
-            parsed = default
-        if parsed <= 0:
-            parsed = default
-        if max_value is not None:
-            parsed = min(parsed, max_value)
-        return parsed
-
-    @staticmethod
-    def _truncate_grep_line(line: str) -> tuple[str, bool]:
-        if len(line) <= _GREP_MAX_LINE_CHARS:
-            return line, False
-        return f'{line[:_GREP_MAX_LINE_CHARS]}... [truncated]', True
-
-    @staticmethod
-    def _truncate_text_to_bytes(text: str, max_bytes: int) -> str:
-        return NativeToolLoader._truncate_text_to_bytes_with_flag(text, max_bytes)[0]
-
-    @staticmethod
-    def _truncate_text_to_bytes_with_flag(text: str, max_bytes: int) -> tuple[str, bool]:
-        data = text.encode('utf-8')
-        if len(data) <= max_bytes:
-            return text, False
-        truncated = data[:max_bytes]
-        while truncated and (truncated[-1] & 0xC0) == 0x80:
-            truncated = truncated[:-1]
-        return truncated.decode('utf-8', errors='ignore'), True
-
-    @staticmethod
-    def _format_size(bytes_count: int) -> str:
-        if bytes_count < 1024:
-            return f'{bytes_count}B'
-        return f'{bytes_count / 1024:.1f}KB'
-
     def _summarize_parameters(self, parameters: dict) -> dict:
         summary = dict(parameters)
         cmd = str(summary.get('command', '')).strip()

src/langbot/pkg/provider/tools/loaders/skill.py

@@ -72,45 +72,6 @@ def register_activated_skill(query: pipeline_query.Query, skill_data: dict) -> N
         activated[skill_name] = skill_data
 
 
-def normalize_skill_names(value: typing.Any) -> list[str]:
-    """Return a de-duplicated list of non-empty skill names."""
-    if not isinstance(value, list):
-        return []
-
-    names: list[str] = []
-    for item in value:
-        skill_name = str(item or '').strip()
-        if skill_name and skill_name not in names:
-            names.append(skill_name)
-    return names
-
-
-def get_activated_skill_names(query: pipeline_query.Query) -> list[str]:
-    """Return activated skill names for callers that own persistence policy."""
-    return normalize_skill_names(list(get_activated_skills(query).keys()))
-
-
-def restore_activated_skills(
-    ap: app.Application,
-    query: pipeline_query.Query,
-    skill_names: typing.Any,
-) -> list[str]:
-    """Restore caller-provided activated skill names into Query variables.
-
-    Persistence and state scope ownership belong to higher-level flows. This
-    helper only rebuilds current Query state from pipeline-visible skills, so
-    removed or unbound skills stay unavailable to native exec/write/edit.
-    """
-    restored: list[str] = []
-    for skill_name in normalize_skill_names(skill_names):
-        skill_data = get_visible_skill(ap, query, skill_name)
-        if skill_data is None:
-            continue
-        register_activated_skill(query, skill_data)
-        restored.append(skill_name)
-    return restored
-
-
 def parse_skill_mount_path(sandbox_path: str) -> tuple[str | None, str]:
     normalized_path = str(sandbox_path or '/workspace').strip() or '/workspace'
     if normalized_path == SKILL_MOUNT_PREFIX:

src/langbot/pkg/provider/tools/loaders/skill_authoring.py

@@ -6,7 +6,6 @@ import typing
 import langbot_plugin.api.entities.builtin.resource.tool as resource_tool
 
 from .. import loader
-from .availability import is_box_backend_available
 
 # Align with Claude Code's Skill tool design:
 # - activate: Activate a skill via Tool Call, returns SKILL.md content
@@ -46,7 +45,18 @@ class SkillToolLoader(loader.ToolLoader):
 
     async def _check_sandbox_available(self) -> bool:
         """Check if the box backend is truly available (not just the runtime)."""
-        return await is_box_backend_available(self.ap)
+        box_service = getattr(self.ap, 'box_service', None)
+        if box_service is None:
+            return False
+        if not getattr(box_service, 'available', False):
+            return False
+        # Check if backend is truly available via get_status
+        try:
+            status = await box_service.get_status()
+            backend_info = status.get('backend', {})
+            return backend_info.get('available', False)
+        except Exception:
+            return False
 
     async def get_tools(self, bound_plugins: list[str] | None = None) -> list[resource_tool.LLMTool]:
         if not self._is_available():
@@ -82,15 +92,16 @@ class SkillToolLoader(loader.ToolLoader):
         if not skill_name:
             raise ValueError('skill_name is required')
 
-        from . import skill as skill_loader
-
-        skill_data = skill_loader.get_visible_skill(self.ap, query, skill_name)
+        skill_mgr = self.ap.skill_mgr
+        skill_data = skill_mgr.get_skill_by_name(skill_name)
         if skill_data is None:
-            visible_skills = skill_loader.get_visible_skills(self.ap, query)
+            visible_skills = getattr(skill_mgr, 'skills', {})
             available_names = ', '.join(sorted(visible_skills.keys())) or 'none'
             raise ValueError(f'Skill "{skill_name}" not found. Available skills: {available_names}')
 
         # Register activated skill for sandbox mount path resolution
+        from . import skill as skill_loader
+
         skill_loader.register_activated_skill(query, skill_data)
 
         # Return SKILL.md content as Tool Result (injects into context)
@@ -116,7 +127,6 @@ class SkillToolLoader(loader.ToolLoader):
             'activated': True,
             'skill_name': skill_name,
             'mount_path': mount_path,
-            'activated_skill_names': skill_loader.get_activated_skill_names(query),
             'content': result_content,
         }
 
@@ -191,13 +201,13 @@ class SkillToolLoader(loader.ToolLoader):
         return resource_tool.LLMTool(
             name=ACTIVATE_SKILL_TOOL_NAME,
             human_desc='Activate a skill',
-            description='Activate a pipeline-visible skill by name and return its instructions as a tool result.',
+            description=self._build_activate_tool_description(),
             parameters={
                 'type': 'object',
                 'properties': {
                     'skill_name': {
                         'type': 'string',
-                        'description': 'The skill name to activate.',
+                        'description': 'The skill name to activate (no arguments). E.g., "pdf" or "data-analysis"',
                     },
                 },
                 'required': ['skill_name'],
@@ -245,3 +255,50 @@ class SkillToolLoader(loader.ToolLoader):
             },
             func=lambda parameters: parameters,
         )
+
+    def _build_activate_tool_description(self) -> str:
+        """Build tool description with embedded available_skills list."""
+        skill_mgr = getattr(self.ap, 'skill_mgr', None)
+        if skill_mgr is None:
+            return 'Activate a skill. No skills are currently available.'
+
+        skills = getattr(skill_mgr, 'skills', {})
+        if not skills:
+            return 'Activate a skill. No skills are currently available.'
+
+        # Build <available_skills> section
+        available_skills_lines = ['<available_skills>']
+        for skill_name, skill_data in sorted(skills.items()):
+            description = skill_data.get('description', '')
+            available_skills_lines.append('<skill>')
+            available_skills_lines.append(f'<name>{skill_name}</name>')
+            available_skills_lines.append(f'<description>{description}</description>')
+            available_skills_lines.append('</skill>')
+        available_skills_lines.append('</available_skills>')
+
+        available_skills_block = '\n'.join(available_skills_lines)
+
+        return f"""Activate a skill within the main conversation.
+
+<skills_instructions>
+When users ask you to perform tasks, check if any of the available skills
+below can help complete the task more effectively. Skills provide specialized
+capabilities and domain knowledge.
+
+How to use skills:
+- Invoke skills using this tool with the skill name only (no arguments)
+- When you invoke a skill, you will see <command-message>
+The skill is activated
+</command-message>
+- The skill's instructions will be provided in the tool result
+- Examples:
+  - skill_name: "pdf" - invoke the pdf skill
+  - skill_name: "data-analysis" - invoke the data-analysis skill
+
+Important:
+- Only use skills listed in <available_skills> below
+- Do not invoke a skill that is already running
+- To create a new skill: prepare it in /workspace, then use register_skill tool
+</skills_instructions>
+
+{available_skills_block}"""

src/langbot/pkg/rag/knowledge/kbmgr.py

@@ -5,6 +5,7 @@ import traceback
 import uuid
 import zipfile
 import io
+import datetime
 from typing import Any
 from langbot.pkg.core import app
 import sqlalchemy
@@ -25,6 +26,10 @@ class RuntimeKnowledgeBase(KnowledgeBaseInterface):
         super().__init__(ap)
         self.knowledge_base_entity = knowledge_base_entity
 
+    @staticmethod
+    def _utc_now() -> datetime.datetime:
+        return datetime.datetime.now(datetime.timezone.utc).replace(tzinfo=None)
+
     async def initialize(self):
         pass
 
@@ -334,6 +339,24 @@ class RuntimeKnowledgeBase(KnowledgeBaseInterface):
         # are passed directly to vector_search by some plugins (e.g. LangRAG)
         # and would cause empty results when the metadata field doesn't exist.
         filters = settings.pop('filters', {})
+        trace_context = settings.pop('_trace_context', None)
+        host_span_started_at = self._utc_now()
+        host_span_id = None
+        if trace_context and trace_context.get('trace_id'):
+            host_parent_span_id = trace_context.get('parent_span_id')
+            host_span_id = trace_context.get('rag_span_id') or f'span-{uuid.uuid4().hex[:16]}'
+            trace_context = {
+                'trace_id': trace_context.get('trace_id'),
+                'parent_span_id': host_span_id,
+                'host_parent_span_id': host_parent_span_id,
+                'message_id': trace_context.get('message_id'),
+                'query_id': trace_context.get('query_id'),
+                'session_id': trace_context.get('session_id'),
+                'bot_id': trace_context.get('bot_id'),
+                'pipeline_id': trace_context.get('pipeline_id'),
+                'knowledge_base_id': kb.uuid,
+                'attributes': trace_context.get('attributes') or {},
+            }
 
         retrieval_context = {
             'query': query,
@@ -343,13 +366,104 @@ class RuntimeKnowledgeBase(KnowledgeBaseInterface):
             'creation_settings': kb.creation_settings or {},
             'filters': filters,
         }
+        if trace_context:
+            retrieval_context['trace_context'] = trace_context
 
-        result = await self.ap.plugin_connector.call_rag_retrieve(
-            plugin_id,
-            retrieval_context,
-        )
+        try:
+            result = await self.ap.plugin_connector.call_rag_retrieve(
+                plugin_id,
+                retrieval_context,
+            )
+        except Exception as e:
+            if trace_context:
+                await self._record_rag_trace_result(
+                    trace_context=trace_context,
+                    host_span_id=host_span_id,
+                    started_at=host_span_started_at,
+                    plugin_id=plugin_id,
+                    result={
+                        'results': [],
+                        'metadata': {
+                            'status': 'error',
+                            'error_message': str(e),
+                        },
+                    },
+                )
+            raise
+        if trace_context:
+            await self._record_rag_trace_result(
+                trace_context=trace_context,
+                host_span_id=host_span_id,
+                started_at=host_span_started_at,
+                plugin_id=plugin_id,
+                result=result,
+            )
         return result
 
+    async def _record_rag_trace_result(
+        self,
+        trace_context: dict[str, Any],
+        host_span_id: str | None,
+        started_at: datetime.datetime,
+        plugin_id: str,
+        result: dict[str, Any],
+    ) -> None:
+        """Persist host RAG span and plugin-provided child spans."""
+        trace_id = trace_context.get('trace_id')
+        if not trace_id:
+            return
+
+        metadata = result.get('metadata') if isinstance(result, dict) else {}
+        metadata = metadata if isinstance(metadata, dict) else {}
+        plugin_spans = metadata.get('trace_spans') if isinstance(metadata.get('trace_spans'), list) else []
+        parent_span_id = trace_context.get('parent_span_id')
+        host_parent_span_id = trace_context.get('host_parent_span_id')
+
+        try:
+            await self.ap.monitoring_service.record_span(
+                trace_id=trace_id,
+                span_id=host_span_id,
+                parent_span_id=host_parent_span_id,
+                name=f'Knowledge retrieval {self.knowledge_base_entity.name}',
+                kind='rag.retrieval',
+                status=metadata.get('status', 'success'),
+                started_at=started_at,
+                duration=metadata.get('duration_ms'),
+                message_id=trace_context.get('message_id'),
+                session_id=trace_context.get('session_id'),
+                bot_id=trace_context.get('bot_id'),
+                pipeline_id=trace_context.get('pipeline_id'),
+                attributes={
+                    'knowledge_base_id': self.knowledge_base_entity.uuid,
+                    'knowledge_base_name': self.knowledge_base_entity.name,
+                    'plugin_id': plugin_id,
+                    'returned_count': len(result.get('results', []) if isinstance(result, dict) else []),
+                    'total_found': result.get('total_found') if isinstance(result, dict) else None,
+                },
+                error_message=metadata.get('error_message'),
+            )
+            for span in plugin_spans:
+                if not isinstance(span, dict):
+                    continue
+                await self.ap.monitoring_service.record_span(
+                    trace_id=trace_id,
+                    span_id=span.get('span_id'),
+                    parent_span_id=span.get('parent_span_id') or host_span_id or parent_span_id,
+                    name=span.get('name') or 'RAG plugin stage',
+                    kind=span.get('kind') or 'rag.stage',
+                    status=span.get('status') or 'success',
+                    started_at=started_at,
+                    duration=span.get('duration_ms'),
+                    message_id=trace_context.get('message_id'),
+                    session_id=trace_context.get('session_id'),
+                    bot_id=trace_context.get('bot_id'),
+                    pipeline_id=trace_context.get('pipeline_id'),
+                    attributes=span.get('attributes') if isinstance(span.get('attributes'), dict) else {},
+                    error_message=span.get('error_message'),
+                )
+        except Exception as e:
+            self.ap.logger.error(f'Failed to record RAG trace spans: {e}')
+
     async def _delete_document(self, document_id: str) -> bool:
         """Call plugin to delete document."""
         kb = self.knowledge_base_entity

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 +70,43 @@ 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_traces = AsyncMock(return_value=([{'trace_id': 'trace-1'}], 1))
+    app.monitoring_service.get_trace_details = AsyncMock(
+        return_value={
+            'found': True,
+            'trace_id': 'trace-1',
+            'trace': {'trace_id': 'trace-1'},
+            'spans': [],
+        }
+    )
+    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 +136,7 @@ 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 +152,7 @@ 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 +169,7 @@ 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 +183,7 @@ 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 +197,7 @@ 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 +211,7 @@ 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
@@ -225,13 +225,13 @@ 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
         data = await response.get_json()
         assert 'overview' in data['data']
+        assert 'traces' in data['data']
 
 
 @pytest.mark.usefixtures('mock_circular_import_chain')
@@ -242,8 +242,7 @@ 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 +251,16 @@ 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
+
+    @pytest.mark.asyncio
+    async def test_get_trace_details(self, quart_test_client):
+        """GET /api/v1/monitoring/traces/{id}."""
+        response = await quart_test_client.get(
+            '/api/v1/monitoring/traces/trace-1', headers={'Authorization': 'Bearer test_token'}
         )
 
         assert response.status_code == 200
@@ -267,8 +274,7 @@ 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 +283,7 @@ 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 +297,7 @@ 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 +307,7 @@ 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 +316,7 @@ 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 +325,7 @@ 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('0006'), f'Expected head to be 0006_*, 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"
-        # Head should be the latest migration (0005 for current state)
-        assert rev.startswith('0005'), f"Expected head to be 0005_*, got {rev}"
+        assert rev is not None, 'Expected a revision after upgrade'
+        # Head should be the latest migration.
+        assert rev.startswith('0006'), f'Expected head to be 0006_*, 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()

tests/unit_tests/box/test_workspace.py

@@ -54,9 +54,7 @@ def test_classify_python_workspace_detects_package_and_requirements():
 def test_wrap_python_command_with_env_contains_bootstrap_and_command():
     command = wrap_python_command_with_env('python script.py')
 
-    assert '_LB_SYSTEM_PYTHON="$(command -v python3 || command -v python || true)"' in command
-    assert '"$_LB_SYSTEM_PYTHON" -m venv "$_LB_VENV_DIR"' in command
-    assert 'kill -0 "$_LB_LOCK_OWNER"' in command
+    assert 'python -m venv "$_LB_VENV_DIR"' in command
     assert 'export VIRTUAL_ENV="$_LB_VENV_DIR"' in command
     assert command.rstrip().endswith('python script.py')
 

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/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_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_mcp_box_integration.py

@@ -180,7 +180,7 @@ class TestMCPServerBoxConfig:
         assert cfg.host_path is None
         assert cfg.host_path_mode == 'ro'
         assert cfg.env == {}
-        assert cfg.startup_timeout_sec == 300
+        assert cfg.startup_timeout_sec == 120
         assert cfg.cpus is None
         assert cfg.memory_mb is None
         assert cfg.pids_limit is None
@@ -494,84 +494,6 @@ class TestBuildBoxProcessPayload:
         assert payload['args'] == ['/opt/other/server.py', '--flag']
 
 
-# ── Python Workspace Preparation ────────────────────────────────────
-
-
-class TestPythonWorkspacePreparation:
-    def test_requirements_workspace_uses_venv_bootstrap(self, mcp_module, tmp_path):
-        host_path = tmp_path / 'mcp-source'
-        host_path.mkdir()
-        (host_path / 'requirements.txt').write_text('mcp==1.26.0\n', encoding='utf-8')
-
-        command = mcp_module.BoxStdioSessionRuntime.detect_install_command(
-            str(host_path),
-            '/workspace/.mcp/u1/workspace',
-        )
-
-        assert command is not None
-        assert '_LB_SYSTEM_PYTHON="$(command -v python3 || command -v python || true)"' in command
-        assert '"$_LB_SYSTEM_PYTHON" -m venv "$_LB_VENV_DIR"' in command
-        assert 'python -m pip install -r "/workspace/.mcp/u1/workspace/requirements.txt"' in command
-        assert 'pip install --no-cache-dir -r' not in command
-
-    def test_staging_refresh_removes_stale_source_files_but_preserves_runtime_dirs(self, mcp_module, tmp_path):
-        source = tmp_path / 'source'
-        source.mkdir()
-        (source / 'server.py').write_text('print("new")\n', encoding='utf-8')
-        (source / 'requirements.txt').write_text('mcp==1.26.0\n', encoding='utf-8')
-        (source / '.env').write_text('TOKEN=new\n', encoding='utf-8')
-
-        process_root = tmp_path / 'shared' / '.mcp' / 'u1'
-        workspace = process_root / 'workspace'
-        (workspace / '.venv' / 'bin').mkdir(parents=True)
-        (workspace / '.venv' / 'bin' / 'python').write_text('', encoding='utf-8')
-        (workspace / '.langbot').mkdir()
-        (workspace / '.langbot' / 'python-env.lock').mkdir()
-        (workspace / '.env').write_text('TOKEN=old\n', encoding='utf-8')
-        (workspace / 'server.py').write_text('print("old")\n', encoding='utf-8')
-        (workspace / 'removed.py').write_text('stale\n', encoding='utf-8')
-        (workspace / 'removed_dir').mkdir()
-        (workspace / 'removed_dir' / 'old.txt').write_text('stale\n', encoding='utf-8')
-
-        mcp_module.BoxStdioSessionRuntime._copy_workspace_tree(str(source), str(process_root), str(workspace))
-
-        assert (workspace / 'server.py').read_text(encoding='utf-8') == 'print("new")\n'
-        assert (workspace / 'requirements.txt').read_text(encoding='utf-8') == 'mcp==1.26.0\n'
-        assert (workspace / '.env').read_text(encoding='utf-8') == 'TOKEN=new\n'
-        assert not (workspace / 'removed.py').exists()
-        assert not (workspace / 'removed_dir').exists()
-        assert (workspace / '.venv' / 'bin' / 'python').exists()
-        assert (workspace / '.langbot' / 'python-env.lock').is_dir()
-
-    def test_staging_refresh_ignores_unlink_race(self, mcp_module, tmp_path, monkeypatch):
-        mcp_stdio_module = sys.modules['langbot.pkg.provider.tools.loaders.mcp_stdio']
-
-        source = tmp_path / 'source'
-        source.mkdir()
-        (source / 'server.py').write_text('print("new")\n', encoding='utf-8')
-
-        process_root = tmp_path / 'shared' / '.mcp' / 'u1'
-        workspace = process_root / 'workspace'
-        workspace.mkdir(parents=True)
-        stale_file = workspace / 'removed.py'
-        stale_file.write_text('stale\n', encoding='utf-8')
-
-        real_unlink = os.unlink
-
-        def unlink_with_race(path):
-            if os.fspath(path) == str(stale_file):
-                real_unlink(path)
-                raise FileNotFoundError(path)
-            real_unlink(path)
-
-        monkeypatch.setattr(mcp_stdio_module.os, 'unlink', unlink_with_race)
-
-        mcp_module.BoxStdioSessionRuntime._copy_workspace_tree(str(source), str(process_root), str(workspace))
-
-        assert not stale_file.exists()
-        assert (workspace / 'server.py').read_text(encoding='utf-8') == 'print("new")\n'
-
-
 # ── get_runtime_info_dict ───────────────────────────────────────────
 
 

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_skill_tools.py

@@ -193,29 +193,6 @@ class TestSkillPathHelpers:
 
         assert list(result.keys()) == ['visible']
 
-    def test_restore_activated_skills_uses_caller_provided_names_and_visibility(self):
-        from langbot.pkg.provider.tools.loaders.skill import (
-            ACTIVATED_SKILLS_KEY,
-            PIPELINE_BOUND_SKILLS_KEY,
-            get_activated_skill_names,
-            restore_activated_skills,
-        )
-
-        ap = _make_ap()
-        ap.skill_mgr = SimpleNamespace(
-            skills={
-                'visible': _make_skill_data(name='visible'),
-                'hidden': _make_skill_data(name='hidden'),
-            }
-        )
-        query = SimpleNamespace(variables={PIPELINE_BOUND_SKILLS_KEY: ['visible']})
-
-        restored = restore_activated_skills(ap, query, ['visible', 'hidden', 'visible', ''])
-
-        assert restored == ['visible']
-        assert list(query.variables[ACTIVATED_SKILLS_KEY].keys()) == ['visible']
-        assert get_activated_skill_names(query) == ['visible']
-
     def test_resolve_virtual_skill_path_allows_visible_skill_reads(self):
         from langbot.pkg.provider.tools.loaders.skill import (
             PIPELINE_BOUND_SKILLS_KEY,
@@ -268,8 +245,7 @@ class TestSkillPathHelpers:
 
         command = wrap_skill_command_with_python_env('python scripts/run.py')
 
-        assert '_LB_SYSTEM_PYTHON="$(command -v python3 || command -v python || true)"' in command
-        assert '"$_LB_SYSTEM_PYTHON" -m venv "$_LB_VENV_DIR"' in command
+        assert 'python -m venv "$_LB_VENV_DIR"' in command
         assert 'export VIRTUAL_ENV="$_LB_VENV_DIR"' in command
         assert command.rstrip().endswith('python scripts/run.py')
 
@@ -305,7 +281,6 @@ class TestSkillToolLoader:
         assert result['activated'] is True
         assert result['skill_name'] == 'demo'
         assert result['mount_path'] == '/workspace/.skills/demo'
-        assert result['activated_skill_names'] == ['demo']
         assert 'Step 1' in result['content']
         assert set(query.variables[ACTIVATED_SKILLS_KEY].keys()) == {'demo'}
 
@@ -481,9 +456,7 @@ class TestNativeToolLoaderSkillPaths:
                 SimpleNamespace(query_id='q1', variables={PIPELINE_BOUND_SKILLS_KEY: ['demo']}),
             )
 
-            assert result['ok'] is True
-            assert result['content'] == 'demo instructions'
-            assert result['truncated'] is False
+            assert result == {'ok': True, 'content': 'demo instructions'}
 
     @pytest.mark.asyncio
     async def test_exec_in_activated_skill_mount_rewrites_command_and_refreshes(self):
@@ -512,7 +485,7 @@ class TestNativeToolLoaderSkillPaths:
                 query,
             )
 
-            assert result['ok'] is True
+            assert result == {'ok': True}
             tool_parameters = ap.box_service.execute_tool.await_args.args[0]
             assert tool_parameters['command'] == 'python /workspace/.skills/demo/scripts/run.py'
             assert tool_parameters['workdir'] == '/workspace/.skills/demo'

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/provider/test_tool_manager_native.py

@@ -248,135 +248,3 @@ async def test_path_escape_blocked():
 
         with pytest.raises(ValueError, match='escapes'):
             await loader.invoke_tool('read', {'path': '/workspace/../../etc/passwd'}, _make_query())
-
-
-@pytest.mark.asyncio
-async def test_box_availability_helper_handles_unavailable_and_errors():
-    from langbot.pkg.provider.tools.loaders.availability import is_box_backend_available
-
-    assert await is_box_backend_available(SimpleNamespace()) is False
-    assert await is_box_backend_available(SimpleNamespace(box_service=SimpleNamespace(available=False))) is False
-
-    unavailable_backend = SimpleNamespace(
-        available=True,
-        get_status=AsyncMock(return_value={'backend': {'available': False}}),
-    )
-    assert await is_box_backend_available(SimpleNamespace(box_service=unavailable_backend)) is False
-
-    failing_backend = SimpleNamespace(
-        available=True,
-        get_status=AsyncMock(side_effect=RuntimeError('box unavailable')),
-    )
-    assert await is_box_backend_available(SimpleNamespace(box_service=failing_backend)) is False
-
-
-@pytest.mark.asyncio
-async def test_read_file_supports_offset_limit_and_truncation_metadata():
-    with tempfile.TemporaryDirectory() as tmpdir:
-        loader, _ = _make_loader_with_workspace(tmpdir)
-        with open(os.path.join(tmpdir, 'lines.txt'), 'w', encoding='utf-8') as f:
-            f.write('one\ntwo\nthree\nfour\n')
-
-        result = await loader.invoke_tool(
-            'read',
-            {'path': '/workspace/lines.txt', 'offset': 2, 'limit': 2},
-            _make_query(),
-        )
-
-        assert result == {
-            'ok': True,
-            'content': 'two\nthree',
-            'truncated': True,
-            'truncated_by': 'lines',
-            'start_line': 2,
-            'end_line': 3,
-            'next_offset': 4,
-            'max_lines': 2,
-            'max_bytes': 50 * 1024,
-        }
-
-
-@pytest.mark.asyncio
-async def test_read_file_handles_line_larger_than_byte_limit():
-    with tempfile.TemporaryDirectory() as tmpdir:
-        loader, _ = _make_loader_with_workspace(tmpdir)
-        with open(os.path.join(tmpdir, 'long-line.txt'), 'w', encoding='utf-8') as f:
-            f.write('abcdef\n')
-
-        result = await loader.invoke_tool(
-            'read',
-            {'path': '/workspace/long-line.txt', 'max_bytes': 3},
-            _make_query(),
-        )
-
-        assert result['ok'] is True
-        assert result['truncated'] is True
-        assert result['truncated_by'] == 'bytes'
-        assert result['next_offset'] == 1
-        assert 'exceeds the 3B read limit' in result['content']
-
-
-@pytest.mark.asyncio
-async def test_exec_result_is_capped_and_exposes_preview_metadata():
-    with tempfile.TemporaryDirectory() as tmpdir:
-        box_service = SimpleNamespace(
-            available=True,
-            default_workspace=tmpdir,
-            execute_tool=AsyncMock(
-                return_value={
-                    'ok': True,
-                    'stdout': 'a' * 60000,
-                    'stderr': 'b' * 60000,
-                    'exit_code': 0,
-                }
-            ),
-        )
-        loader = NativeToolLoader(SimpleNamespace(box_service=box_service, logger=Mock()))
-
-        result = await loader.invoke_tool('exec', {'command': 'python -V'}, _make_query())
-
-        assert result['ok'] is True
-        assert len(result['stdout'].encode('utf-8')) == 50 * 1024
-        assert len(result['stderr'].encode('utf-8')) == 50 * 1024
-        assert len(result['preview'].encode('utf-8')) == 50 * 1024
-        assert result['stdout_truncated'] is True
-        assert result['stderr_truncated'] is True
-        assert result['truncated'] is True
-        assert result['truncated_by'] == 'bytes'
-
-
-@pytest.mark.asyncio
-async def test_glob_caps_match_count_and_returns_preview():
-    with tempfile.TemporaryDirectory() as tmpdir:
-        loader, _ = _make_loader_with_workspace(tmpdir)
-        for index in range(105):
-            with open(os.path.join(tmpdir, f'file-{index:03d}.txt'), 'w', encoding='utf-8') as f:
-                f.write(str(index))
-
-        result = await loader.invoke_tool('glob', {'path': '/workspace', 'pattern': '*.txt'}, _make_query())
-
-        assert result['ok'] is True
-        assert result['total'] == 105
-        assert len(result['matches']) == 100
-        assert result['preview'] == '\n'.join(result['matches'])
-        assert result['truncated'] is True
-        assert result['truncated_by'] == 'matches'
-
-
-@pytest.mark.asyncio
-async def test_grep_reports_invalid_regex_and_truncates_long_matching_lines():
-    with tempfile.TemporaryDirectory() as tmpdir:
-        loader, _ = _make_loader_with_workspace(tmpdir)
-        with open(os.path.join(tmpdir, 'data.txt'), 'w', encoding='utf-8') as f:
-            f.write('needle ' + ('x' * 600) + '\n')
-
-        invalid = await loader.invoke_tool('grep', {'path': '/workspace', 'pattern': '['}, _make_query())
-        result = await loader.invoke_tool('grep', {'path': '/workspace', 'pattern': 'needle'}, _make_query())
-
-        assert invalid['ok'] is False
-        assert 'Invalid regex' in invalid['error']
-        assert result['ok'] is True
-        assert result['truncated'] is True
-        assert result['truncated_by'] == 'line'
-        assert result['matches'][0]['file'] == '/workspace/data.txt'
-        assert result['matches'][0]['content'].endswith('... [truncated]')

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'}