修复前端调试与基础交互问题

frontend/src/composables/__tests__/useSiteInfo.spec.ts

@@ -12,6 +12,7 @@ describe('useSiteInfo', () => {
   beforeEach(() => {
     vi.resetModules()
     apiClientMocks.get.mockReset()
+    document.title = ''
   })
 
   it('loads public site info', async () => {
@@ -23,10 +24,57 @@ describe('useSiteInfo', () => {
     })
 
     const { useSiteInfo } = await import('../useSiteInfo')
-    const { siteName, siteSubtitle, refreshSiteInfo } = useSiteInfo()
+    const { siteName, siteSubtitle, siteInfoLoaded, refreshSiteInfo } = useSiteInfo()
     await refreshSiteInfo()
 
     expect(siteName.value).toBe('Custom Aether')
     expect(siteSubtitle.value).toBe('Gateway')
+    expect(siteInfoLoaded.value).toBe(true)
+    expect(document.title).toBe('Custom Aether')
+  })
+
+  it('keeps default site text hidden until public site info resolves', async () => {
+    let resolveRequest: (value: { data: { site_name: string; site_subtitle: string } }) => void = () => {}
+    apiClientMocks.get.mockReturnValue(new Promise((resolve) => {
+      resolveRequest = resolve
+    }))
+
+    const { useSiteInfo } = await import('../useSiteInfo')
+    const { siteName, siteSubtitle, siteInfoLoaded } = useSiteInfo()
+
+    expect(siteName.value).toBe('')
+    expect(siteSubtitle.value).toBe('')
+    expect(siteInfoLoaded.value).toBe(false)
+    expect(document.title).toBe('')
+
+    resolveRequest({
+      data: {
+        site_name: 'Configured Aether',
+        site_subtitle: 'Configured Gateway',
+      },
+    })
+    await new Promise(resolve => setTimeout(resolve, 0))
+
+    expect(siteName.value).toBe('Configured Aether')
+    expect(siteSubtitle.value).toBe('Configured Gateway')
+    expect(siteInfoLoaded.value).toBe(true)
+    expect(document.title).toBe('Configured Aether')
+  })
+
+  it('uses upstream defaults only after public site info fails', async () => {
+    apiClientMocks.get.mockRejectedValue(new Error('network unavailable'))
+
+    const { useSiteInfo } = await import('../useSiteInfo')
+    const { siteName, siteSubtitle, siteInfoLoaded, refreshSiteInfo } = useSiteInfo()
+
+    expect(siteName.value).toBe('')
+    expect(siteSubtitle.value).toBe('')
+
+    await refreshSiteInfo()
+
+    expect(siteName.value).toBe('Aether')
+    expect(siteSubtitle.value).toBe('AI Gateway')
+    expect(siteInfoLoaded.value).toBe(true)
+    expect(document.title).toBe('Aether')
   })
 })