feat: add distributed async dataset with unix socket server and refactor agent communication bus

Implement AsyncDataSet class supporting client-server model over Unix sockets with SQLite backend, including KV store, table management, and concurrent query handling. Rename `get_messages` to `receive_messages` in AgentCommunicationBus and update all callers. Remove deprecated `get_recommended_agent` function from agent_roles, `invalidate_tool` from tool_cache, and legacy `receive_messages` wrapper. Add multiplexer command routing in handlers with `/prompt` command support. Introduce comprehensive help documentation system for workflows. Update default API URLs to production endpoints and refactor adaptive context window calculation in AdvancedContextManager.

pr/cache/tool_cache.py

@@ -122,18 +122,6 @@ class ToolCache:
         conn.commit()
         conn.close()
 
-    def invalidate_tool(self, tool_name: str):
-        conn = sqlite3.connect(self.db_path, check_same_thread=False)
-        cursor = conn.cursor()
-
-        cursor.execute("DELETE FROM tool_cache WHERE tool_name = ?", (tool_name,))
-        deleted_count = cursor.rowcount
-
-        conn.commit()
-        conn.close()
-
-        return deleted_count
-
     def clear_expired(self):
         current_time = int(time.time())