test(useChat): 优化中断会话提示相关单元测试

- 在消息断言中添加id字段类型匹配
- 移除 localStorage 清理操作以简化测试
- 调整 SESSION_STATUS 和 LOAD_SESSION 中断状态测试逻辑，删除对 localStorage 状态的依赖
- 删除无效的本地存储相关测试用例，确保中断状态总是显示提示
- 更新 dismissContinuePrompt 测试，改为只验证动作派发，不依赖 localStorage
- 统一保证中断时提示始终显示，且消除提示操作后的状态正确性验证

Author: hqwlkj

packages/vscode-ide-companion/src/webview/context/ChatProvider.test.tsx

@@ -332,6 +332,7 @@ describe("appReducer - USER_MESSAGE", () => {
 
     expect(result.current.state.messages).toHaveLength(1);
     expect(result.current.state.messages[0]).toEqual({
+      id: expect.any(String),
       role: "user",
       content: "Hello world",
       meta: { timestamp: 123 },
@@ -769,7 +770,6 @@ describe("appReducer - Continue prompt", () => {
   beforeEach(() => {
     clearMessageHandlers();
     vi.clearAllMocks();
-    localStorage.clear();
   });
 
   it("showContinuePrompt defaults to false", () => {
@@ -804,14 +804,11 @@ describe("appReducer - Continue prompt", () => {
     expect(result.current.state.showContinuePrompt).toBe(false);
   });
 
-  it("SESSION_STATUS interrupted sets showContinuePrompt true without localStorage key", () => {
+  it("SESSION_STATUS interrupted sets showContinuePrompt true", () => {
     const { result } = renderHook(() => useChat(), {
       wrapper: createWrapper(),
     });
 
-    // Ensure no localStorage entry
-    localStorage.removeItem("deepcode:continuePromptDismissed:s1");
-
     act(() => {
       result.current.dispatch({
         type: "SESSION_STATUS",
@@ -825,26 +822,6 @@ describe("appReducer - Continue prompt", () => {
     expect(result.current.state.loading).toBe(false);
   });
 
-  it("SESSION_STATUS interrupted does not show prompt when dismissed in localStorage", () => {
-    const { result } = renderHook(() => useChat(), {
-      wrapper: createWrapper(),
-    });
-
-    // Simulate that user previously dismissed
-    localStorage.setItem("deepcode:continuePromptDismissed:s1", "1");
-
-    act(() => {
-      result.current.dispatch({
-        type: "SESSION_STATUS",
-        status: "interrupted",
-        sessionId: "s1",
-      });
-    });
-
-    expect(result.current.state.activeSessionStatus).toBe("interrupted");
-    expect(result.current.state.showContinuePrompt).toBe(false);
-  });
-
   it("SESSION_STATUS with non-interrupted status sets showContinuePrompt false", () => {
     const { result } = renderHook(() => useChat(), {
       wrapper: createWrapper(),
@@ -873,13 +850,11 @@ describe("appReducer - Continue prompt", () => {
     expect(result.current.state.showContinuePrompt).toBe(false);
   });
 
-  it("LOAD_SESSION with interrupted status shows prompt without localStorage", () => {
+  it("LOAD_SESSION with interrupted status shows prompt", () => {
     const { result } = renderHook(() => useChat(), {
       wrapper: createWrapper(),
     });
 
-    localStorage.removeItem("deepcode:continuePromptDismissed:s1");
-
     act(() => {
       result.current.dispatch({
         type: "LOAD_SESSION",
@@ -894,27 +869,6 @@ describe("appReducer - Continue prompt", () => {
     expect(result.current.state.showContinuePrompt).toBe(true);
   });
 
-  it("LOAD_SESSION with interrupted status does not show prompt when dismissed", () => {
-    const { result } = renderHook(() => useChat(), {
-      wrapper: createWrapper(),
-    });
-
-    localStorage.setItem("deepcode:continuePromptDismissed:s1", "1");
-
-    act(() => {
-      result.current.dispatch({
-        type: "LOAD_SESSION",
-        sessionId: "s1",
-        status: "interrupted",
-        messages: [],
-        sessions: [],
-      });
-    });
-
-    expect(result.current.state.activeSessionStatus).toBe("interrupted");
-    expect(result.current.state.showContinuePrompt).toBe(false);
-  });
-
   it("LOAD_SESSION with non-interrupted status does not show prompt", () => {
     const { result } = renderHook(() => useChat(), {
       wrapper: createWrapper(),
@@ -933,7 +887,7 @@ describe("appReducer - Continue prompt", () => {
     expect(result.current.state.showContinuePrompt).toBe(false);
   });
 
-  it("dismissContinuePrompt action persists to localStorage and dispatches", () => {
+  it("dismissContinuePrompt action dispatches DISMISS_CONTINUE_PROMPT", () => {
     const { result } = renderHook(() => useChat(), {
       wrapper: createWrapper(),
     });
@@ -957,18 +911,14 @@ describe("appReducer - Continue prompt", () => {
     });
 
     expect(result.current.state.showContinuePrompt).toBe(false);
-    expect(localStorage.getItem("deepcode:continuePromptDismissed:s1")).toBe("1");
   });
 
-  it("different sessions have independent dismiss state", () => {
+  it("SESSION_STATUS interrupted always shows prompt when interrupted", () => {
     const { result } = renderHook(() => useChat(), {
       wrapper: createWrapper(),
     });
 
-    // Dismiss session 1
-    localStorage.setItem("deepcode:continuePromptDismissed:s1", "1");
-
-    // Session 1 should not show prompt
+    // Dismiss once
     act(() => {
       result.current.dispatch({
         type: "SESSION_STATUS",
@@ -977,9 +927,15 @@ describe("appReducer - Continue prompt", () => {
       });
     });
 
+    expect(result.current.state.showContinuePrompt).toBe(true);
+
+    act(() => {
+      result.current.actions.dismissContinuePrompt();
+    });
+
     expect(result.current.state.showContinuePrompt).toBe(false);
 
-    // Session 2 should show prompt (not dismissed)
+    // Next interruption should always show the prompt (no localStorage persistence)
     act(() => {
       result.current.dispatch({
         type: "SESSION_STATUS",