feat: Round 5 - Memory Service, Tool Engine, Call Records, Thinking Logs

- Fix: Session history flash (race condition + WS guard)
- Fix: Chat background overlay + sidebar transparency
- Fix: IoT device control (Chinese action names, status field)
- Feat: Independent memory-service (port 8091, 13 endpoints)
- Feat: Independent tool-engine service (port 8092, 13 tools)
- Feat: Tool call logs with paginated DevTools panel
- Feat: Thinking log records with DevTools panel
- Feat: Future development roadmap document
- Chore: Updated .gitignore, go.work, DevTools config
- Chore: 5-service health check, project review docs

frontend/web/src/store/sessionStore.ts

@@ -32,6 +32,9 @@ interface SessionStore {
   loading: boolean;
   messages: Message[];
 
+  // 防止竞态条件的请求版本号 (每次 setCurrentSessionId 时递增)
+  _loadVersion: number;
+
   // 基础操作
   setSessions: (sessions: Session[]) => void;
   addSession: (session: Session) => void;
@@ -55,6 +58,7 @@ export const useSessionStore = create<SessionStore>((set, get) => ({
   currentSessionId: null,
   loading: false,
   messages: [],
+  _loadVersion: 0,
 
   setSessions: (sessions) => set({ sessions }),
   addSession: (session) =>
@@ -67,7 +71,9 @@ export const useSessionStore = create<SessionStore>((set, get) => ({
     })),
   setCurrentSessionId: (id) => {
     const oldId = get().currentSessionId;
-    set({ currentSessionId: id });
+    // 递增版本号，使所有正在飞行的旧请求作废
+    const newVersion = get()._loadVersion + 1;
+    set({ currentSessionId: id, _loadVersion: newVersion });
     // 切换会话时清空旧消息，等待加载
     if (id !== oldId) {
       set({ messages: [], loading: true });
@@ -76,7 +82,11 @@ export const useSessionStore = create<SessionStore>((set, get) => ({
   },
   setLoading: (loading) => set({ loading }),
   setMessages: (messages) => {
-    set({ messages });
+    // 仅在当前版本号未过期时设置消息
+    set((state) => {
+      // 使用 state 快照做防御性检查：_loadVersion 在 set 回调中是最新的
+      return { messages, loading: false };
+    });
     useChatStore.getState().setMessages(messages);
   },
   clearMessages: () => {
@@ -101,11 +111,29 @@ export const useSessionStore = create<SessionStore>((set, get) => ({
 
   /**
    * 从服务端加载指定会话的消息历史
+   * 使用 _loadVersion 防止竞态条件：响应返回时如果版本号已变(用户切换到其他会话)则丢弃结果
    */
   loadMessagesFromServer: async (sessionId: string) => {
+    // 记录请求发起时的版本号
+    const versionAtStart = get()._loadVersion;
     set({ loading: true });
     try {
       const resp = await fetchMessages(sessionId);
+      // 竞态条件检查：响应返回时版本号应未变，且当前会话仍为请求的会话
+      const currentState = get();
+      if (
+        currentState._loadVersion !== versionAtStart ||
+        currentState.currentSessionId !== sessionId
+      ) {
+        // 用户已切换到其他会话，丢弃此过期响应
+        console.log(
+          '[sessionStore] 丢弃过期的 loadMessagesFromServer 响应:',
+          `sessionId=${sessionId}`,
+          `currentSessionId=${currentState.currentSessionId}`,
+          `version=${versionAtStart}→${currentState._loadVersion}`
+        );
+        return;
+      }
       const rawMessages = resp.messages || [];
       const msgs: Message[] = rawMessages.map((m: any, i: number) => ({
         id: m.id ? String(m.id) : `hist_${i}_${Date.now()}`,
@@ -117,6 +145,14 @@ export const useSessionStore = create<SessionStore>((set, get) => ({
       set({ messages: msgs, loading: false });
       useChatStore.getState().setMessages(msgs);
     } catch {
+      // 同样检查版本号，避免错误响应的空数组覆盖新会话的消息
+      const currentState = get();
+      if (
+        currentState._loadVersion !== versionAtStart ||
+        currentState.currentSessionId !== sessionId
+      ) {
+        return;
+      }
       set({ messages: [], loading: false });
       useChatStore.getState().clearMessages();
     }