feat: restructure notification services

frontend/src/features/providers/components/ProviderAuthDialog.vue

@@ -247,7 +247,7 @@
                 额度提醒
               </Label>
               <p class="mt-1 text-xs text-muted-foreground">
-                余额低于阈值时通过重要通知发送提醒
+                余额低于阈值时通过通知服务发送提醒
               </p>
             </div>
             <Switch v-model="quotaAlert.enabled" />

frontend/src/features/providers/components/__tests__/OAuthAccountDialog.grok-import.spec.ts

@@ -14,7 +14,16 @@ const endpointMocks = vi.hoisted(() => ({
   getAwsRegions: vi.fn(),
 }))
 
-vi.mock('@/api/endpoints', () => endpointMocks)
+vi.mock('@/api/endpoints', async () => {
+  const actual = await vi.importActual<typeof import('@/api/endpoints/provider_oauth')>(
+    '@/api/endpoints/provider_oauth',
+  )
+
+  return {
+    ...endpointMocks,
+    normalizeBatchImportCredentials: actual.normalizeBatchImportCredentials,
+  }
+})
 
 vi.mock('@/components/ui', async () => {
   const { defineComponent, h } = await import('vue')
@@ -358,7 +367,7 @@ describe('OAuthAccountDialog Grok import', () => {
 
     expect(endpointMocks.startBatchImportOAuthTask).toHaveBeenCalledWith(
       'provider-1',
-      'sso-1\nsso-2',
+      '["sso-1","sso-2"]',
       undefined,
     )
     expect(endpointMocks.importProviderRefreshToken).not.toHaveBeenCalled()