chore: Add PyPI package support for uvx/pip installation (#1764)

* Initial plan

* Add package structure and resource path utilities

- Created langbot/ package with __init__.py and __main__.py entry point
- Added paths utility to find frontend and resource files from package installation
- Updated config loading to use resource paths
- Updated frontend serving to use resource paths
- Added MANIFEST.in for package data inclusion
- Updated pyproject.toml with build system and entry points

Co-authored-by: RockChinQ <45992437+RockChinQ@users.noreply.github.com>

* Add PyPI publishing workflow and update license

- Created GitHub Actions workflow to build frontend and publish to PyPI
- Added license field to pyproject.toml to fix deprecation warning
- Updated .gitignore to exclude build artifacts
- Tested package building successfully

Co-authored-by: RockChinQ <45992437+RockChinQ@users.noreply.github.com>

* Add PyPI installation documentation

- Created PYPI_INSTALLATION.md with detailed installation and usage instructions
- Updated README.md to feature uvx/pip installation as recommended method
- Updated README_EN.md with same changes for English documentation

Co-authored-by: RockChinQ <45992437+RockChinQ@users.noreply.github.com>

* Address code review feedback

- Made package-data configuration more specific to langbot package only
- Improved path detection with caching to avoid repeated file I/O
- Removed sys.path searching which was incorrect for package data
- Removed interactive input() call for non-interactive environment compatibility
- Simplified error messages for version check

Co-authored-by: RockChinQ <45992437+RockChinQ@users.noreply.github.com>

* Fix code review issues

- Use specific exception types instead of bare except
- Fix misleading comments about directory levels
- Remove redundant existence check before makedirs with exist_ok=True
- Use context manager for file opening to ensure proper cleanup

Co-authored-by: RockChinQ <45992437+RockChinQ@users.noreply.github.com>

* Simplify package configuration and document behavioral differences

- Removed redundant package-data configuration, relying on MANIFEST.in
- Added documentation about behavioral differences between package and source installation
- Clarified that include-package-data=true uses MANIFEST.in for data files

Co-authored-by: RockChinQ <45992437+RockChinQ@users.noreply.github.com>

* chore: update pyproject.toml

* chore: try pack templates in langbot/

* chore: update

* chore: update

* chore: update

* chore: update

* chore: update

* chore: adjust dir structure

* chore: fix imports

* fix: read default-pipeline-config.json

* fix: read default-pipeline-config.json

* fix: tests

* ci: publish pypi

* chore: bump version 4.6.0-beta.1 for testing

* chore: add templates/**

* fix: send adapters and requesters icons

* chore: bump version 4.6.0b2 for testing

* chore: add platform field for docker-compose.yaml

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: RockChinQ <45992437+RockChinQ@users.noreply.github.com>
Co-authored-by: Junyan Qin <rockchinq@gmail.com>

src/langbot/libs/slack_api/api.py

@@ -0,0 +1,102 @@
+import json
+import traceback
+from quart import Quart, jsonify, request
+from slack_sdk.web.async_client import AsyncWebClient
+from .slackevent import SlackEvent
+from typing import Callable
+import langbot_plugin.api.entities.builtin.platform.events as platform_events
+
+
+class SlackClient:
+    def __init__(self, bot_token: str, signing_secret: str, logger: None):
+        self.bot_token = bot_token
+        self.signing_secret = signing_secret
+        self.app = Quart(__name__)
+        self.client = AsyncWebClient(self.bot_token)
+        self.app.add_url_rule(
+            '/callback/command', 'handle_callback', self.handle_callback_request, methods=['GET', 'POST']
+        )
+        self._message_handlers = {
+            'example': [],
+        }
+        self.bot_user_id = None  # 避免机器人回复自己的消息
+        self.logger = logger
+
+    async def handle_callback_request(self):
+        try:
+            body = await request.get_data()
+            data = json.loads(body)
+            if 'type' in data:
+                if data['type'] == 'url_verification':
+                    return data['challenge']
+
+            bot_user_id = data.get('event', {}).get('bot_id', '')
+
+            if self.bot_user_id and bot_user_id == self.bot_user_id:
+                return jsonify({'status': 'ok'})
+
+            # 处理私信
+            if data and data.get('event', {}).get('channel_type') in ['im']:
+                event = SlackEvent.from_payload(data)
+                await self._handle_message(event)
+                return jsonify({'status': 'ok'})
+
+            # 处理群聊
+            if data.get('event', {}).get('type') == 'app_mention':
+                data.setdefault('event', {})['channel_type'] = 'channel'
+                event = SlackEvent.from_payload(data)
+                await self._handle_message(event)
+                return jsonify({'status': 'ok'})
+
+            return jsonify({'status': 'ok'})
+
+        except Exception as e:
+            await self.logger.error(f'Error in handle_callback_request: {traceback.format_exc()}')
+            raise (e)
+
+    async def _handle_message(self, event: SlackEvent):
+        """
+        处理消息事件。
+        """
+        msg_type = event.type
+        if msg_type in self._message_handlers:
+            for handler in self._message_handlers[msg_type]:
+                await handler(event)
+
+    def on_message(self, msg_type: str):
+        """注册消息类型处理器"""
+
+        def decorator(func: Callable[[platform_events.Event], None]):
+            if msg_type not in self._message_handlers:
+                self._message_handlers[msg_type] = []
+            self._message_handlers[msg_type].append(func)
+            return func
+
+        return decorator
+
+    async def send_message_to_channel(self, text: str, channel_id: str):
+        try:
+            response = await self.client.chat_postMessage(channel=channel_id, text=text)
+            if self.bot_user_id is None and response.get('ok'):
+                self.bot_user_id = response['message']['bot_id']
+            return
+        except Exception as e:
+            await self.logger.error(f'Error in send_message: {e}')
+            raise e
+
+    async def send_message_to_one(self, text: str, user_id: str):
+        try:
+            response = await self.client.chat_postMessage(channel='@' + user_id, text=text)
+            if self.bot_user_id is None and response.get('ok'):
+                self.bot_user_id = response['message']['bot_id']
+
+            return
+        except Exception as e:
+            await self.logger.error(f'Error in send_message: {traceback.format_exc()}')
+            raise e
+
+    async def run_task(self, host: str, port: int, *args, **kwargs):
+        """
+        启动 Quart 应用。
+        """
+        await self.app.run_task(host=host, port=port, *args, **kwargs)