feat(security): harden gateway boundaries and usage policies

Consolidate subscription usage policy enforcement, privacy-safe persistence, and gateway security hardening into one reviewable change.

Includes bounded HTTP and execution envelopes, header and protocol guards, DNS and relay validation, authentication and secret projection hardening, secure backup/install paths, and regression coverage.

frontend/src/App.vue

@@ -9,20 +9,18 @@ import { onMounted, onErrorCaptured, onUnmounted } from 'vue'
 import { useAuthStore } from '@/stores/auth'
 import ToastContainer from '@/components/ToastContainer.vue'
 import ConfirmContainer from '@/components/ConfirmContainer.vue'
-import apiClient, { AUTH_STATE_CHANGE_EVENT } from '@/api/client'
+import {
+  AUTH_SESSION_SIGNAL_KEY,
+  AUTH_STATE_CHANGE_EVENT,
+  parseAuthSessionSignal,
+  type AuthStateChangeDetail,
+} from '@/api/client'
 import { NETWORK_CONFIG, AUTH_CONFIG } from '@/config/constants'
 import router from '@/router'
-import { hasAuthIdentityChanged } from '@/utils/authToken'
 import { log } from '@/utils/logger'
 
 const authStore = useAuthStore()
 
-// 立即检查token,如果存在就设置到store中
-const storedToken = apiClient.getToken()
-if (storedToken) {
-  authStore.token = storedToken
-}
-
 // 全局错误处理器 - 只处理特定错误,避免完全吞掉所有错误
 onErrorCaptured((error: Error) => {
   log.error('Error captured in component', error)
@@ -88,32 +86,16 @@ if (typeof window !== 'undefined') {
   })
 }
 
-async function syncExternalAuthState(nextToken: string | null): Promise<void> {
-  const previousToken = authStore.token
-  const previousUser = authStore.user
-    ? {
-        id: authStore.user.id,
-        role: authStore.user.role,
-      }
-    : null
-
-  authStore.syncToken()
-
-  if (!nextToken) {
-    if (previousToken || previousUser) {
+async function syncExternalAuthState(authenticated: boolean): Promise<void> {
+  if (!authenticated) {
+    if (authStore.token || authStore.user) {
       authStore.applyExternalLogout()
       await router.replace('/')
     }
     return
   }
 
-  const identityChanged = hasAuthIdentityChanged(previousToken, nextToken, previousUser)
-  if (!identityChanged && previousUser) {
-    return
-  }
-
-  const user = await authStore.fetchCurrentUser()
-  if (!user) {
+  if (!await authStore.applyExternalLogin()) {
     return
   }
 
@@ -123,16 +105,27 @@ async function syncExternalAuthState(nextToken: string | null): Promise<void> {
 }
 
 function handleAuthStorageChange(event: StorageEvent): void {
-  if (event.key !== 'access_token') {
+  if (event.key !== AUTH_SESSION_SIGNAL_KEY) {
     return
   }
 
-  syncExternalAuthState(event.newValue).catch((err) => log.error('syncExternalAuthState failed', err))
+  const signal = parseAuthSessionSignal(event.newValue)
+  if (!signal) {
+    return
+  }
+  syncExternalAuthState(signal.authenticated).catch((err) => log.error('syncExternalAuthState failed', err))
 }
 
 function handleLocalAuthStateChange(event: Event): void {
-  const authEvent = event as CustomEvent<{ token: string | null }>
-  syncExternalAuthState(authEvent.detail?.token ?? apiClient.getToken()).catch((err) => log.error('syncExternalAuthState failed', err))
+  const authEvent = event as CustomEvent<AuthStateChangeDetail>
+  if (!authEvent.detail) {
+    return
+  }
+  if (!authEvent.detail.authenticated) {
+    syncExternalAuthState(false).catch((err) => log.error('syncExternalAuthState failed', err))
+  } else {
+    authStore.syncToken()
+  }
 }
 
 onMounted(async () => {