chore: add debug logging for find_library_agent tool

Added logging to help diagnose library search issues:
- Log the query and user_id when tool is called
- Log the number of results returned from database

autogpt_platform/backend/backend/api/features/chat/tools/agent_search.py

@@ -153,12 +153,18 @@ async def search_agents(
 
             # If no results from UUID lookup, do text search
             if not agents:
-                logger.info(f"Searching user library for: {query}")
+                logger.info(
+                    f"Searching user library for: {query!r} (user_id={user_id})"
+                )
                 results = await library_db.list_library_agents(
                     user_id=user_id,  # type: ignore[arg-type]
                     search_term=query,
                     page_size=10,
                 )
+                logger.info(
+                    f"Library search returned {len(results.agents)} agents "
+                    f"(total_items={results.pagination.total_items})"
+                )
                 for agent in results.agents:
                     agents.append(
                         AgentInfo(

autogpt_platform/backend/backend/api/features/chat/tools/find_library_agent.py

@@ -1,5 +1,6 @@
 """Tool for searching agents in the user's library."""
 
+import logging
 from typing import Any
 
 from backend.api.features.chat.model import ChatSession
@@ -8,6 +9,8 @@ from .agent_search import search_agents
 from .base import BaseTool
 from .models import ToolResponseBase
 
+logger = logging.getLogger(__name__)
+
 
 class FindLibraryAgentTool(BaseTool):
     """Tool for searching agents in the user's library."""
@@ -44,8 +47,10 @@ class FindLibraryAgentTool(BaseTool):
     async def _execute(
         self, user_id: str | None, session: ChatSession, **kwargs
     ) -> ToolResponseBase:
+        query = kwargs.get("query", "").strip()
+        logger.info(f"find_library_agent called: query={query!r}, user_id={user_id}")
         return await search_agents(
-            query=kwargs.get("query", "").strip(),
+            query=query,
             source="library",
             session_id=session.session_id,
             user_id=user_id,