refactor(chat): remove frontend state saves

src/components/chat/hooks/useAgentChatSession.lifecycle.test.tsx

@@ -24,7 +24,6 @@ jest.mock("@/lib/chatStream", () => ({
 
 const listChatSessions = jest.fn();
 const deleteChatSession = jest.fn();
-const saveActiveChatState = jest.fn();
 const updateChatSessionTitle = jest.fn();
 
 jest.mock("../chatStorage", () => ({
@@ -42,7 +41,6 @@ jest.mock("../chatStorage", () => ({
     messages: [],
     sessionId: "session-loaded",
   })),
-  saveActiveChatState: (...args: unknown[]) => saveActiveChatState(...args),
   updateChatSessionTitle: (...args: unknown[]) => updateChatSessionTitle(...args),
 }));
 
@@ -50,7 +48,6 @@ describe("useAgentChatSession", () => {
   beforeEach(() => {
     listChatSessions.mockReset();
     deleteChatSession.mockReset();
-    saveActiveChatState.mockReset();
     updateChatSessionTitle.mockReset();
     jest.mocked(abortAgentChat).mockReset();
     jest.mocked(forkAgentChat).mockReset();
@@ -65,7 +62,6 @@ describe("useAgentChatSession", () => {
     jest.mocked(resumeAgentChatStream).mockImplementation(async () => undefined);
     jest.mocked(streamAgentChat).mockImplementation(async () => undefined);
     deleteChatSession.mockImplementation(async () => undefined);
-    saveActiveChatState.mockImplementation(async (state) => state.sessionId);
     updateChatSessionTitle.mockImplementation(async () => undefined);
   });
 
@@ -190,7 +186,7 @@ describe("useAgentChatSession lifecycle and resume", () => {
     );
   });
 
-  it("persists a new conversation only after the stream is done", async () => {
+  it("does not autosave full messages after the stream is done", async () => {
     listChatSessions.mockResolvedValue([]);
     let emitStreamEvent: ((event: StreamEvent) => void) | undefined;
     jest.mocked(streamAgentChat).mockImplementationOnce(async ({ onEvent }) => {
@@ -220,8 +216,6 @@ describe("useAgentChatSession lifecycle and resume", () => {
         jest.advanceTimersByTime(200);
       });
 
-      expect(saveActiveChatState).not.toHaveBeenCalled();
-
       act(() => {
         emitStreamEvent?.({
           type: "token",
@@ -234,8 +228,6 @@ describe("useAgentChatSession lifecycle and resume", () => {
         jest.advanceTimersByTime(200);
       });
 
-      expect(saveActiveChatState).not.toHaveBeenCalled();
-
       act(() => {
         emitStreamEvent?.({
           type: "done",
@@ -247,14 +239,11 @@ describe("useAgentChatSession lifecycle and resume", () => {
         jest.advanceTimersByTime(200);
       });
 
-      await waitFor(() => expect(saveActiveChatState).toHaveBeenCalledTimes(1));
-      expect(saveActiveChatState.mock.calls[0][0]).toMatchObject({
-        sessionId: "chat-stream-1",
-        messages: [
-          expect.objectContaining({ role: "user", content: "第一条消息" }),
-          expect.objectContaining({ role: "assistant", content: "收到" }),
-        ],
-      });
+      expect(result.current.messages).toEqual([
+        expect.objectContaining({ role: "user", content: "第一条消息" }),
+        expect.objectContaining({ role: "assistant", content: "收到" }),
+      ]);
+      expect(result.current.activeSessionId).toBe("chat-stream-1");
     } finally {
       jest.useRealTimers();
     }