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>

google_tools/utils.py

@@ -193,12 +193,13 @@ def format_email_summary(emails: List[Dict], include_body: bool = False) -> str:
         lines.append(f"{i}. From: {email_data['from']}")
         lines.append(f"   Subject: {email_data['subject']}")
         lines.append(f"   Date: {email_data['date']}")
+        lines.append(f"   Message-ID: {email_data.get('id', 'N/A')}")
 
         if include_body and "body" in email_data:
             # Truncate long bodies
             body = email_data["body"]
-            if len(body) > 500:
-                body = body[:500] + "..."
+            if len(body) > 2000:
+                body = body[:2000] + "..."
             lines.append(f"   Body: {body}")
         else:
             lines.append(f"   Snippet: {email_data['snippet']}")