fix: hide Users tab for non-admins, remove auth hint text

- Fetch /api/profile after login and hide the Users settings tab
  when the user's role is not admin
- Remove the "Enter the GATEWAY_AUTH_TOKEN" hint from the login page
  since tokens are now managed via the admin panel, not .env files

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

src/channels/web/static/app.js

@@ -186,6 +186,13 @@ function authenticate() {
       connectSSE();
       connectLogSSE();
       startGatewayStatusPolling();
+      // Hide the Users settings tab for non-admin users.
+      apiFetch('/api/profile').then(function(profile) {
+        if (profile && profile.role !== 'admin') {
+          var usersTab = document.querySelector('[data-settings-subtab="users"]');
+          if (usersTab) usersTab.style.display = 'none';
+        }
+      }).catch(function() {});
       checkTeeStatus();
       loadThreads();
       loadMemoryTree();

src/channels/web/static/i18n/en.js

@@ -9,8 +9,6 @@ I18n.register('en', {
   'auth.connect': 'Connect',
   'auth.errorRequired': 'Token required',
   'auth.errorInvalid': 'Invalid token',
-  'auth.hint': 'Enter the GATEWAY_AUTH_TOKEN from your .env file',
-  
   // Chat
   'chat.inputPlaceholder': 'Message or / for commands...',
   

src/channels/web/static/i18n/zh-CN.js

@@ -9,8 +9,6 @@ I18n.register('zh-CN', {
   'auth.connect': '连接',
   'auth.errorRequired': '请输入令牌',
   'auth.errorInvalid': '令牌无效',
-  'auth.hint': '输入 .env 配置文件中的 GATEWAY_AUTH_TOKEN',
-  
   // 聊天
   'chat.inputPlaceholder': '输入消息或 / 以使用命令...',
   

src/channels/web/static/index.html

@@ -41,7 +41,6 @@
         <button id="auth-connect-btn" data-i18n="auth.connect">Connect</button>
       </div>
       <div id="auth-error"></div>
-      <p class="auth-hint" data-i18n="auth.hint">Enter the GATEWAY_AUTH_TOKEN from your .env configuration.</p>
     </div>
   </div>