refactor: replace try-except blocks with contextlib.suppress for cleaner error handling across multiple files

nanobot/agent/tools/mcp.py

@@ -4,7 +4,7 @@ import asyncio
 import os
 import re
 import shutil
-from contextlib import AsyncExitStack
+from contextlib import AsyncExitStack, suppress
 from typing import Any
 
 import httpx
@@ -609,10 +609,8 @@ async def connect_mcp_servers(
                     "only JSON-RPC to stdout and sends logs/debug output to stderr instead."
                 )
             logger.error("MCP server '{}': failed to connect: {}{}", name, e, hint)
-            try:
+            with suppress(Exception):
                 await server_stack.aclose()
-            except Exception:
-                pass
             return name, None
 
     server_stacks: dict[str, AsyncExitStack] = {}