fix: improve shutdown and project continuity

src/renderer/src/App.test.tsx

@@ -1723,6 +1723,58 @@ describe('App', () => {
     )
   })
 
+  it('restores and persists the last active project', async () => {
+    const secondProject = {
+      ...project,
+      id: '00000000-0000-4000-8000-000000000102',
+      name: '第二项目',
+      rootPath: 'C:\\Second',
+      defaultWorkMode: 'execute' as const
+    }
+    vi.mocked(api.projects.list).mockResolvedValueOnce([
+      project,
+      secondProject
+    ])
+    localStorage.setItem(
+      'goodbuddy.active-project.v1',
+      secondProject.id
+    )
+
+    render(<App />)
+
+    expect(await screen.findByLabelText('当前项目')).toHaveValue(
+      secondProject.id
+    )
+    expect(screen.getByLabelText('工作模式')).toHaveValue('execute')
+
+    fireEvent.change(screen.getByLabelText('当前项目'), {
+      target: { value: project.id }
+    })
+    await waitFor(() =>
+      expect(
+        localStorage.getItem('goodbuddy.active-project.v1')
+      ).toBe(project.id)
+    )
+  })
+
+  it('falls back when the last active project is no longer available', async () => {
+    localStorage.setItem(
+      'goodbuddy.active-project.v1',
+      '00000000-0000-4000-8000-000000000999'
+    )
+
+    render(<App />)
+
+    expect(await screen.findByLabelText('当前项目')).toHaveValue(
+      project.id
+    )
+    await waitFor(() =>
+      expect(
+        localStorage.getItem('goodbuddy.active-project.v1')
+      ).toBe(project.id)
+    )
+  })
+
   it.each([
     ['opencode', 'OpenCode'],
     ['continue', 'Continue CLI']

src/renderer/src/App.tsx

@@ -352,6 +352,8 @@ const emptyTokenUsage: TokenUsageSummary = {
 
 const storageKey = 'goodbuddy.conversations.v1'
 
+const activeProjectStorageKey = 'goodbuddy.active-project.v1'
+
 const quickActions = [
   {
     title: '总结一段内容',
@@ -644,6 +646,14 @@ function loadConversations(): Conversation[] {
   }
 }
 
+function loadActiveProjectId(): string | undefined {
+  try {
+    return localStorage.getItem(activeProjectStorageKey) || undefined
+  } catch {
+    return undefined
+  }
+}
+
 function isConversation(value: unknown): value is Conversation {
   if (!value || typeof value !== 'object') {
     return false
@@ -2200,6 +2210,13 @@ function App(): React.JSX.Element {
 
   useEffect(() => {
     activeProjectIdRef.current = activeProjectId
+    if (activeProjectId) {
+      try {
+        localStorage.setItem(activeProjectStorageKey, activeProjectId)
+      } catch {
+        // The project selection still works when persistence is unavailable.
+      }
+    }
   }, [activeProjectId])
 
   useEffect(() => {
@@ -2238,7 +2255,11 @@ function App(): React.JSX.Element {
         if (!active || value.length === 0) {
           return
         }
-        const project = value[0]!
+        const lastActiveProjectId = loadActiveProjectId()
+        const project =
+          value.find(
+            (candidate) => candidate.id === lastActiveProjectId
+          ) ?? value[0]!
         setProjects(value)
         setActiveProjectId(project.id)
         setWorkMode(