feat: add chat history query

agent/chat/service.py

@@ -27,7 +27,8 @@ class ChatService:
         """
         self.agent_bridge = agent_bridge
 
-    def run(self, query: str, session_id: str, send_chunk_fn: Callable[[dict], None]):
+    def run(self, query: str, session_id: str, send_chunk_fn: Callable[[dict], None],
+            channel_type: str = ""):
         """
         Run the agent for *query* and stream results back via *send_chunk_fn*.
 
@@ -37,6 +38,7 @@ class ChatService:
         :param query: user query text
         :param session_id: session identifier for agent isolation
         :param send_chunk_fn: callable(chunk_data: dict) to send a streaming chunk
+        :param channel_type: source channel (e.g. "web", "feishu") for persistence
         """
         agent = self.agent_bridge.get_agent(session_id=session_id)
         if agent is None:
@@ -164,6 +166,11 @@ class ChatService:
             new_messages = executor.messages[original_length:]
             agent.messages.extend(new_messages)
 
+        # Persist new messages to SQLite so they survive restarts and
+        # can be queried via the HISTORY interface.
+        if new_messages:
+            self._persist_messages(session_id, list(new_messages), channel_type)
+
         # Store executor reference for files_to_send access
         agent.stream_executor = executor
 
@@ -174,6 +181,25 @@ class ChatService:
 
 
 
+    @staticmethod
+    def _persist_messages(session_id: str, new_messages: list, channel_type: str = ""):
+        try:
+            from config import conf
+            if not conf().get("conversation_persistence", True):
+                return
+        except Exception:
+            pass
+        try:
+            from agent.memory import get_conversation_store
+            get_conversation_store().append_messages(
+                session_id, new_messages, channel_type=channel_type
+            )
+        except Exception as e:
+            logger.warning(
+                f"[ChatService] Failed to persist messages for session={session_id}: {e}"
+            )
+
+
 class _StreamState:
     """Mutable state shared between the event callback and the run method."""