fix: Redis bool storage, tool tracking matching, e2e fixture scope

- Convert booleans to strings for Redis hset (Redis doesn't accept bool)
- Extract capability from delegate_to_X tool names for tracking
- Use loop_scope="module" for pytest-asyncio module-scoped fixtures
- Add note about using venv for tests in AGENTS.md

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/core/tool_tracking.py

@@ -43,6 +43,16 @@ class ToolCallTracker:
             conversation_id=conversation_id,
         )
 
+    def _extract_capability(self, tool_name: str) -> str:
+        """
+        Extract capability name from tool name.
+
+        Tool names like 'delegate_to_librarian' map to capability 'librarian'.
+        """
+        if tool_name.startswith("delegate_to_"):
+            return tool_name.replace("delegate_to_", "")
+        return tool_name
+
     async def track_call(self, tool_name: str, duration: float):
         """
         Record a tool call with timing.
@@ -56,8 +66,9 @@ class ToolCallTracker:
             self.actual_calls[tool_name] = []
         self.actual_calls[tool_name].append(duration)
 
-        # Check if tool was recommended
-        was_recommended = tool_name in self.recommended_capabilities
+        # Check if tool was recommended (normalize tool name to capability)
+        capability = self._extract_capability(tool_name)
+        was_recommended = capability in self.recommended_capabilities
 
         if not was_recommended:
             logger.warning(
@@ -98,8 +109,12 @@ class ToolCallTracker:
         Called after Tatlock completes its response to identify
         tools that were recommended but never used.
         """
+        # Normalize actual tool names to capabilities for comparison
+        used_capabilities = {
+            self._extract_capability(tool) for tool in self.actual_calls.keys()
+        }
         # Find tools that were recommended but not used
-        unused_tools = self.recommended_capabilities - set(self.actual_calls.keys())
+        unused_tools = self.recommended_capabilities - used_capabilities
 
         if unused_tools:
             logger.info(
@@ -145,7 +160,11 @@ class ToolCallTracker:
             Dict with tracking statistics
         """
         total_calls = sum(len(durations) for durations in self.actual_calls.values())
-        unused = self.recommended_capabilities - set(self.actual_calls.keys())
+        # Normalize actual tool names to capabilities for comparison
+        used_capabilities = {
+            self._extract_capability(tool) for tool in self.actual_calls.keys()
+        }
+        unused = self.recommended_capabilities - used_capabilities
 
         return {
             "recommended_capabilities": list(self.recommended_capabilities),
@@ -154,11 +173,11 @@ class ToolCallTracker:
             "total_calls": total_calls,
             "accuracy": {
                 "recommended_and_used": len(
-                    self.recommended_capabilities & set(self.actual_calls.keys())
+                    self.recommended_capabilities & used_capabilities
                 ),
                 "recommended_but_unused": len(unused),
                 "not_recommended_but_used": len(
-                    set(self.actual_calls.keys()) - self.recommended_capabilities
+                    used_capabilities - self.recommended_capabilities
                 ),
             },
         }