feat: Add Loki MCP server scaffold, fix adapter blocking, upgrade model

- Scaffold mcp_servers/loki/ with config and async HTTP client
- Fix Slack/Telegram adapters to use non-blocking connections
- Upgrade default model to claude-sonnet-4-6
- Improve Agent SDK message collection for empty ResultMessage cases
- Add Message-ID to email summaries, increase body truncation limit
- Fix .gitignore inline comments that broke sensitive file exclusions

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

adapters/slack/adapter.py

@@ -88,7 +88,8 @@ class SlackAdapter(BaseAdapter):
         self.handler = AsyncSocketModeHandler(self.app, app_token)
 
         print("[Slack] Starting Socket Mode connection...")
-        await self.handler.start_async()
+        # Connect to Slack (non-blocking)
+        await self.handler.connect_async()
 
         self.is_running = True
         print("[Slack] Connected and listening for messages")
@@ -97,7 +98,7 @@ class SlackAdapter(BaseAdapter):
         """Stop the Slack Socket Mode connection."""
         if self.handler:
             print("[Slack] Stopping Socket Mode connection...")
-            await self.handler.close_async()
+            await self.handler.disconnect_async()
             self.is_running = False
             print("[Slack] Disconnected")
 

adapters/telegram/adapter.py

@@ -4,6 +4,7 @@ Telegram adapter for ajarbot.
 Uses python-telegram-bot library for async Telegram Bot API integration.
 """
 
+import asyncio
 from typing import Any, Dict, List, Optional
 
 from telegram import Bot, Update
@@ -42,6 +43,7 @@ class TelegramAdapter(BaseAdapter):
         super().__init__(config)
         self.application: Optional[Application] = None
         self.bot: Optional[Bot] = None
+        self._polling_task: Optional[asyncio.Task] = None
 
     @property
     def platform_name(self) -> str:
@@ -86,9 +88,13 @@ class TelegramAdapter(BaseAdapter):
         print("[Telegram] Starting bot...")
         await self.application.initialize()
         await self.application.start()
-        await self.application.updater.start_polling(
-            allowed_updates=Update.ALL_TYPES,
-            drop_pending_updates=True,
+
+        # Run polling in a background task instead of blocking
+        self._polling_task = asyncio.create_task(
+            self.application.updater.start_polling(
+                allowed_updates=Update.ALL_TYPES,
+                drop_pending_updates=True,
+            )
         )
 
         self.is_running = True
@@ -106,7 +112,15 @@ class TelegramAdapter(BaseAdapter):
             await self.application.stop()
             await self.application.shutdown()
             self.is_running = False
-            print("[Telegram] Bot stopped")
+
+        if self._polling_task and not self._polling_task.done():
+            self._polling_task.cancel()
+            try:
+                await self._polling_task
+            except asyncio.CancelledError:
+                pass
+
+        print("[Telegram] Bot stopped")
 
     def _register_handlers(self) -> None:
         """Register Telegram message handlers."""