chore: migrate config paths to XDG base directory and add hit_count tracking to api_cache

pr/agents/agent_communication.py

@@ -68,6 +68,12 @@ class AgentCommunicationBus:
             )
         """
         )
+
+        cursor.execute("PRAGMA table_info(agent_messages)")
+        columns = [row[1] for row in cursor.fetchall()]
+        if "read" not in columns:
+            cursor.execute("ALTER TABLE agent_messages ADD COLUMN read INTEGER DEFAULT 0")
+
         self.conn.commit()
 
     def send_message(self, message: AgentMessage, session_id: Optional[str] = None):

pr/agents/agent_manager.py

@@ -1,4 +1,3 @@
-import json
 import time
 import uuid
 from dataclasses import dataclass, field
@@ -169,7 +168,7 @@ Break down the task and delegate subtasks to appropriate agents. Coordinate thei
 
         return results
 
-    def get_session_summary(self) -> str:
+    def get_session_summary(self) -> Dict[str, Any]:
         summary = {
             "session_id": self.session_id,
             "active_agents": len(self.active_agents),
@@ -183,7 +182,7 @@ Break down the task and delegate subtasks to appropriate agents. Coordinate thei
                 for agent_id, agent in self.active_agents.items()
             ],
         }
-        return json.dumps(summary)
+        return summary
 
     def clear_session(self):
         self.active_agents.clear()