diff --git a/README.md b/README.md
index 7e9c041..b4a0564 100644
--- a/README.md
+++ b/README.md
@@ -71,7 +71,7 @@ npm --prefix frontend ci
 
 ## 🤖 AI Note Ingestion API
 
-Generate a Personal Access Token (`mf_...`) in **Personal Center → API Keys** (or via `POST /api/v1/auth/tokens`) and ingest structured Markdown notes plus outcome tags in one atomic request:
+Generate a Personal Access Token (`mf_...`) in **Account Settings → Personal Access Token** (`/account`) (or via `GET /api/v1/auth/api-key` and `POST /api/v1/auth/api-key/rotate`) and ingest structured Markdown notes plus outcome tags in one atomic request:
 
 ```bash
 curl -X POST "http://127.0.0.1:8000/api/v1/meetings/<MEETING_ID>/ingest" \
diff --git a/README_CN.md b/README_CN.md
index d3ec198..57efd8e 100644
--- a/README_CN.md
+++ b/README_CN.md
@@ -71,7 +71,7 @@ npm --prefix frontend ci
 
 ## 🤖 AI 纪要导入接口
 
-在「个人中心 → API 密钥」生成个人访问令牌（`mf_...`，或调用 `POST /api/v1/auth/tokens`），即可通过单次请求将外部语音转写或大模型总结原子化写入指定会议：
+在「账号设置 → 个人访问令牌」（`/account`）查看或轮换个人访问令牌（`mf_...`，或调用 `GET /api/v1/auth/api-key` 与 `POST /api/v1/auth/api-key/rotate`），即可通过单次请求将外部语音转写或大模型总结原子化写入指定会议：
 
 ```bash
 curl -X POST "http://127.0.0.1:8000/api/v1/meetings/<MEETING_ID>/ingest" \
diff --git a/frontend/src/App.vue b/frontend/src/App.vue
index 7150961..0a47b0b 100644
--- a/frontend/src/App.vue
+++ b/frontend/src/App.vue
@@ -98,6 +98,7 @@ onBeforeUnmount(() => {
                     <button
                       type="button"
                       class="lang-toggle-btn"
+                      data-action="toggle-locale"
                       data-testid="lang-toggle-btn"
                       :aria-label="locale === 'zh' ? 'Switch to English' : '切换到中文'"
                       @click="toggleLocale"
diff --git a/frontend/src/components/FocusMode.vue b/frontend/src/components/FocusMode.vue
index e54d230..ad6d0a7 100644
--- a/frontend/src/components/FocusMode.vue
+++ b/frontend/src/components/FocusMode.vue
@@ -411,6 +411,7 @@ const noteActionTags = computed(() => {
         <button
           type="button"
           class="focus-lang-btn"
+          data-action="toggle-locale"
           data-testid="focus-lang-toggle"
           :aria-label="tr('切换语言', 'Switch Language')"
           @click="toggleLocale"
diff --git a/frontend/src/views/LoginView.vue b/frontend/src/views/LoginView.vue
index 1e3b999..9262cf9 100644
--- a/frontend/src/views/LoginView.vue
+++ b/frontend/src/views/LoginView.vue
@@ -63,7 +63,7 @@ async function submit() {
     <section class="auth-card" aria-labelledby="login-title">
       <div class="auth-card-top">
         <div class="brand-mark">M</div>
-        <button type="button" class="lang-toggle-btn" @click="toggleLocale">{{ t('app.langToggle') }}</button>
+        <button type="button" class="lang-toggle-btn" data-action="toggle-locale" @click="toggleLocale">{{ t('app.langToggle') }}</button>
       </div>
       <p class="eyebrow">{{ tr('欢迎回来', 'Welcome back') }}</p>
       <h2 id="login-title">{{ tr('登录 MeetFlow', 'Sign in to MeetFlow') }}</h2>
diff --git a/frontend/src/views/RegisterView.vue b/frontend/src/views/RegisterView.vue
index ac10f91..91d07ba 100644
--- a/frontend/src/views/RegisterView.vue
+++ b/frontend/src/views/RegisterView.vue
@@ -61,7 +61,7 @@ async function submit() {
     <section class="auth-card" aria-labelledby="register-title">
       <div class="auth-card-top">
         <div class="brand-mark">M</div>
-        <button type="button" class="lang-toggle-btn" @click="toggleLocale">{{ t('app.langToggle') }}</button>
+        <button type="button" class="lang-toggle-btn" data-action="toggle-locale" @click="toggleLocale">{{ t('app.langToggle') }}</button>
       </div>
       <p class="eyebrow">{{ tr('加入共享工作区', 'Join shared workspace') }}</p>
       <h1 id="register-title">{{ tr('申请 MeetFlow 账号', 'Request MeetFlow Account') }}</h1>