重构会话标题编辑和删除确认逻辑；重构历史会话时间记录

src/components/chat/hooks/useAgentChatSession.ts

@@ -48,6 +48,16 @@ type PromptRunOptions = {
   assistantMessage?: Message;
 };
 
+const createPersistedStateKey = (state: LoadedChatState) =>
+  JSON.stringify({
+    storageSessionId: state.storageSessionId ?? null,
+    title: state.title ?? null,
+    isTitleManuallyEdited: state.isTitleManuallyEdited ?? false,
+    sessionId: state.sessionId ?? null,
+    messages: state.messages,
+    branchGroups: state.branchGroups,
+  });
+
 const upsertProgress = (
   progress: ChatProgress[] | undefined,
   event: StreamEvent & { type: "progress" },
@@ -158,6 +168,16 @@ export const useAgentChatSession = ({
   const isSessionTitleManuallyEditedRef = useRef(false);
   const cancelPromiseRef = useRef<Promise<void> | null>(null);
   const titleUpdateNonceRef = useRef(0);
+  const lastPersistedStateKeyRef = useRef(
+    createPersistedStateKey({
+      storageSessionId: undefined,
+      title: undefined,
+      isTitleManuallyEdited: false,
+      messages: [],
+      sessionId: undefined,
+      branchGroups: [],
+    }),
+  );
 
   useEffect(() => {
     sessionIdRef.current = sessionId;
@@ -180,6 +200,7 @@ export const useAgentChatSession = ({
 
         storageSessionIdRef.current = loadedState.storageSessionId;
         sessionIdRef.current = loadedState.sessionId;
+        lastPersistedStateKeyRef.current = createPersistedStateKey(loadedState);
         hydrationCompletedRef.current = true;
         hydrationNonceRef.current += 1;
         titleUpdateNonceRef.current += 1;
@@ -219,11 +240,19 @@ export const useAgentChatSession = ({
         sessionId,
         branchGroups,
       };
+      const currentStateKey = createPersistedStateKey(state);
+      if (currentStateKey === lastPersistedStateKeyRef.current) {
+        return;
+      }
 
       void saveActiveChatState(state)
         .then((storageSessionId) => {
           if (hydrationNonceRef.current !== currentHydrationNonce) return;
           storageSessionIdRef.current = storageSessionId;
+          lastPersistedStateKeyRef.current = createPersistedStateKey({
+            ...state,
+            storageSessionId,
+          });
           return listChatSessions();
         })
         .then((sessions) => {
@@ -503,6 +532,14 @@ export const useAgentChatSession = ({
     setSessionId(undefined);
     sessionIdRef.current = undefined;
     storageSessionIdRef.current = undefined;
+    lastPersistedStateKeyRef.current = createPersistedStateKey({
+      storageSessionId: undefined,
+      title: undefined,
+      isTitleManuallyEdited: false,
+      messages: [],
+      sessionId: undefined,
+      branchGroups: [],
+    });
     titleUpdateNonceRef.current += 1;
     setIsStreaming(false);
   }, []);
@@ -521,6 +558,7 @@ export const useAgentChatSession = ({
     titleUpdateNonceRef.current += 1;
     storageSessionIdRef.current = newState.storageSessionId;
     sessionIdRef.current = newState.sessionId;
+    lastPersistedStateKeyRef.current = createPersistedStateKey(newState);
     setMessages(newState.messages);
     setSessionTitle(newState.title);
     setIsSessionTitleManuallyEdited(newState.isTitleManuallyEdited ?? false);
@@ -547,6 +585,7 @@ export const useAgentChatSession = ({
         titleUpdateNonceRef.current += 1;
         storageSessionIdRef.current = nextState.storageSessionId;
         sessionIdRef.current = nextState.sessionId;
+        lastPersistedStateKeyRef.current = createPersistedStateKey(nextState);
         setBranchTransition(null);
         setMessages(nextState.messages);
         setSessionTitle(nextState.title);
@@ -581,6 +620,14 @@ export const useAgentChatSession = ({
           titleUpdateNonceRef.current += 1;
           storageSessionIdRef.current = undefined;
           sessionIdRef.current = undefined;
+          lastPersistedStateKeyRef.current = createPersistedStateKey({
+            storageSessionId: undefined,
+            title: undefined,
+            isTitleManuallyEdited: false,
+            messages: [],
+            sessionId: undefined,
+            branchGroups: [],
+          });
           setBranchTransition(null);
           setMessages([]);
           setSessionTitle(undefined);
@@ -599,6 +646,7 @@ export const useAgentChatSession = ({
         titleUpdateNonceRef.current += 1;
         storageSessionIdRef.current = nextState.storageSessionId;
         sessionIdRef.current = nextState.sessionId;
+        lastPersistedStateKeyRef.current = createPersistedStateKey(nextState);
         setBranchTransition(null);
         setMessages(nextState.messages);
         setSessionTitle(nextState.title);
@@ -637,12 +685,20 @@ export const useAgentChatSession = ({
         if (storageSessionIdRef.current === targetStorageSessionId) {
           setSessionTitle(normalizedTitle);
           setIsSessionTitleManuallyEdited(true);
+          lastPersistedStateKeyRef.current = createPersistedStateKey({
+            storageSessionId: targetStorageSessionId,
+            title: normalizedTitle,
+            isTitleManuallyEdited: true,
+            messages,
+            sessionId: sessionIdRef.current,
+            branchGroups,
+          });
         }
       } catch (error) {
         console.error("[GlobalChatbox] Failed to rename chat session:", error);
       }
     },
-    [isHydrating],
+    [branchGroups, isHydrating, messages],
   );
 
   const regenerate = useCallback(async () => {