diff --git a/src/api/__tests__/client.spec.ts b/src/api/__tests__/client.spec.ts
index 257b98d4..7a473e60 100644
--- a/src/api/__tests__/client.spec.ts
+++ b/src/api/__tests__/client.spec.ts
@@ -387,6 +387,21 @@ describe('MoviePilot API client', () => {
     expect(notifier.error).not.toHaveBeenCalled()
   })
 
+  it('403 被 onForbidden 接管时不逐条弹请求层 Toast', async () => {
+    const onForbidden = vi.fn(() => true)
+    const { api } = createApiClients({
+      adapter: rejectWith({ detail: 'token校验不通过' }, 403),
+      hooks: { onForbidden },
+      notifier,
+    })
+
+    const error = requireApiRequestError(await api.get('/resource').catch(reason => reason))
+
+    expect(error.status).toBe(403)
+    expect(onForbidden).toHaveBeenCalledWith(error)
+    expect(notifier.error).not.toHaveBeenCalled()
+  })
+
   it('401 未被 onUnauthorized 接管时保留逐条错误提示', async () => {
     const onUnauthorized = vi.fn(() => false)
     const { api } = createApiClients({
diff --git a/src/api/__tests__/index.spec.ts b/src/api/__tests__/index.spec.ts
index a201e058..47f55fd3 100644
--- a/src/api/__tests__/index.spec.ts
+++ b/src/api/__tests__/index.spec.ts
@@ -1,5 +1,5 @@
 import { AxiosError, AxiosHeaders, type AxiosResponse, type InternalAxiosRequestConfig } from 'axios'
-import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { beforeEach, describe, expect, it, vi } from 'vitest'
 
 const mocks = vi.hoisted(() => ({
   i18nT: vi.fn((key: string) => `translated:${key}`),
@@ -70,10 +70,6 @@ describe('API application wiring', () => {
     mocks.toastError.mockClear()
   })
 
-  afterEach(() => {
-    vi.useRealTimers()
-  })
-
   it('向 window 暴露插件最终 payload 客户端，而内部默认导出数据客户端', async () => {
     const module = await import('@/api')
 
@@ -98,8 +94,7 @@ describe('API application wiring', () => {
     expect(mocks.i18nT).toHaveBeenCalledWith('common.invalidApiResponse')
   })
 
-  it('已登录时并发 401 只统一登出并提示一次本地化文案', async () => {
-    vi.useFakeTimers()
+  it('已登录时并发 401 只统一登出并静默返回登录页', async () => {
     mocks.authState.token = 'expired-token'
     const module = await installFailingAdapter(401, { detail: 'Not authenticated' })
 
@@ -107,25 +102,30 @@ describe('API application wiring', () => {
 
     expect(mocks.logout).toHaveBeenCalledOnce()
     expect(mocks.routerPush).toHaveBeenCalledWith('/login')
-    expect(mocks.toastError).toHaveBeenCalledOnce()
-    expect(mocks.toastError).toHaveBeenCalledWith('translated:common.sessionExpired')
+    expect(mocks.toastError).not.toHaveBeenCalled()
   })
 
-  it('登出后短暂窗口内的在途 401 保持静默，窗口过后恢复逐条提示', async () => {
-    vi.useFakeTimers()
+  it('登出后的在途 401 持续静默，不在登录页暴露认证错误', async () => {
     mocks.authState.token = 'expired-token'
     const module = await installFailingAdapter(401, { detail: 'Not authenticated' })
 
     await module.default.get('/dashboard').catch(() => {})
-    expect(mocks.toastError).toHaveBeenCalledOnce()
-
-    // 窗口内的连带 401 不再弹出英文提示。
     await module.default.get('/subscribe').catch(() => {})
-    expect(mocks.toastError).toHaveBeenCalledOnce()
-
-    vi.setSystemTime(Date.now() + 6000)
     await module.default.get('/resource').catch(() => {})
-    expect(mocks.toastError).toHaveBeenCalledTimes(2)
-    expect(mocks.toastError).toHaveBeenLastCalledWith('Not authenticated')
+
+    expect(mocks.logout).toHaveBeenCalledOnce()
+    expect(mocks.routerPush).toHaveBeenCalledOnce()
+    expect(mocks.toastError).not.toHaveBeenCalled()
+  })
+
+  it('token 校验失败的 403 完成签退后不弹技术错误', async () => {
+    mocks.authState.token = 'invalid-token'
+    const module = await installFailingAdapter(403, { detail: 'token校验不通过' })
+
+    await Promise.allSettled([module.default.get('/dashboard'), module.default.get('/subscribe')])
+
+    expect(mocks.logout).toHaveBeenCalledOnce()
+    expect(mocks.routerPush).toHaveBeenCalledWith('/login')
+    expect(mocks.toastError).not.toHaveBeenCalled()
   })
 })
diff --git a/src/api/client.ts b/src/api/client.ts
index 3b94313c..22176960 100644
--- a/src/api/client.ts
+++ b/src/api/client.ts
@@ -80,8 +80,8 @@ export interface ApiFeedbackNotifier {
 /** 请求生命周期钩子用于隔离认证和离线状态等应用级副作用。 */
 export interface ApiClientHooks {
   markServerOnline?(): void
-  onForbidden?(error: ApiRequestError): void
-  /** 返回 true 表示认证失效已由应用层统一接管，请求层不再弹出逐条错误提示。 */
+  /** 返回 true 表示认证失败已由应用层接管，请求层不再弹出逐条错误提示。 */
+  onForbidden?(error: ApiRequestError): boolean | void
   onUnauthorized?(error: ApiRequestError): boolean | void
   reportConnectionFailure?(reason: 'network-error' | 'timeout' | 'server-unreachable'): void
 }
@@ -288,11 +288,11 @@ function installResponseInterceptors(
       if (!requestConfig?.skipConnectionTracking && failureReason) {
         hooks?.reportConnectionFailure?.(failureReason)
       }
-      if (response?.status === 403) hooks?.onForbidden?.(error)
-
-      // 认证失效（如后端重启导致 token 作废）由应用层统一登出跳转，
-      // 避免并发请求逐条弹出 "Not authenticated" 等英文提示刷屏。
-      if (response?.status === 401 && hooks?.onUnauthorized?.(error) === true) {
+      // 认证失败由应用层统一签退或交给登录流程处理，避免在登录页暴露技术错误。
+      const authenticationHandled =
+        (response?.status === 401 && hooks?.onUnauthorized?.(error) === true) ||
+        (response?.status === 403 && hooks?.onForbidden?.(error) === true)
+      if (authenticationHandled) {
         return Promise.reject(error)
       }
 
diff --git a/src/api/index.ts b/src/api/index.ts
index beb0ca93..a322d37d 100644
--- a/src/api/index.ts
+++ b/src/api/index.ts
@@ -26,42 +26,31 @@ export interface ConnectionAwareRequestConfig extends AxiosRequestConfig {
 
 const globalOfflineStatus = useGlobalOfflineStatus()
 const toast = useToast()
-// 会话失效后短暂窗口内的 401 都是同一次 token 作废的连带失败，统一静默避免刷屏。
-const SESSION_EXPIRED_SUPPRESSION_MS = 5000
-let sessionExpiredAt = 0
 const fallbackMessageKeys: Record<ApiFallbackMessageKey, string> = {
   'invalid-envelope': 'common.invalidApiResponse',
   'network-error': 'common.networkConnectionFailed',
   'request-failed': 'common.apiRequestFailed',
   timeout: 'common.requestTimeout',
 }
+
+/** 认证失效只负责代码签退；原始异常继续交给发起请求的业务界面处理。 */
+function handleAuthenticationFailure(): true {
+  const authStore = useAuthStore()
+  if (authStore.token) {
+    authStore.logout()
+    void router.push('/login')
+  }
+  return true
+}
+
 const { api, pluginApi } = createApiClients({
   baseURL: import.meta.env.VITE_API_BASE_URL,
   setupInstance: initializeClient,
   hooks: {
     markServerOnline: globalOfflineStatus.markServerOnline,
     reportConnectionFailure: globalOfflineStatus.reportNetworkError,
-    onForbidden: () => {
-      const authStore = useAuthStore()
-      // 未登录的 403 可能是登录或 MFA 流程的一部分，不应触发全局登出跳转。
-      if (!authStore.token) return
-      authStore.logout()
-      void router.push('/login')
-    },
-    onUnauthorized: () => {
-      const authStore = useAuthStore()
-      if (!authStore.token) {
-        // 无 token 的 401（如登录页验证失败）交给调用方自行展示；
-        // 但刚登出后的在途请求属于同一会话失效，继续静默。
-        return Date.now() - sessionExpiredAt < SESSION_EXPIRED_SUPPRESSION_MS
-      }
-      // 后端重启会使旧 token 作废：只提示一次并统一登出，不逐条弹英文错误。
-      sessionExpiredAt = Date.now()
-      authStore.logout()
-      toast.error(i18n.global.t('common.sessionExpired'))
-      void router.push('/login')
-      return true
-    },
+    onForbidden: handleAuthenticationFailure,
+    onUnauthorized: handleAuthenticationFailure,
   },
   notifier: {
     error: message => toast.error(message),
diff --git a/src/locales/en-US.ts b/src/locales/en-US.ts
index a016e789..bbdf95db 100644
--- a/src/locales/en-US.ts
+++ b/src/locales/en-US.ts
@@ -66,7 +66,6 @@ export default {
     requestTimeout: 'Request timed out',
     invalidApiResponse: 'The server returned an invalid response',
     apiRequestFailed: 'Request failed',
-    sessionExpired: 'Session expired, please sign in again',
     troubleshooting: 'Troubleshooting',
     checking: 'Checking',
     retry: 'Retry',
diff --git a/src/locales/zh-CN.ts b/src/locales/zh-CN.ts
index 9320c58e..f0f084c4 100644
--- a/src/locales/zh-CN.ts
+++ b/src/locales/zh-CN.ts
@@ -64,7 +64,6 @@ export default {
     requestTimeout: '请求超时',
     invalidApiResponse: '服务器返回了无效响应',
     apiRequestFailed: '请求失败',
-    sessionExpired: '登录状态已失效，请重新登录',
     troubleshooting: '疑难解答',
     checking: '检查中',
     retry: '重试',
diff --git a/src/locales/zh-TW.ts b/src/locales/zh-TW.ts
index 63723f9b..9cadbee5 100644
--- a/src/locales/zh-TW.ts
+++ b/src/locales/zh-TW.ts
@@ -64,7 +64,6 @@ export default {
     requestTimeout: '請求超時',
     invalidApiResponse: '服務器返回了無效響應',
     apiRequestFailed: '請求失敗',
-    sessionExpired: '登入狀態已失效，請重新登入',
     troubleshooting: '疑難排解',
     checking: '檢查中',
     retry: '重試',