Always show logout and render a single underlying text label.

Move exit next to the theme toggle so it remains visible when APP_AUTH_DISABLED=true; PO select shows only ETH or BTC copy.

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/instance/templates/index.html

@@ -18,8 +18,8 @@
     <link rel="apple-touch-icon" href="/static/icons/apple-touch-icon.png">
     <link rel="manifest" href="/static/icons/manifest.webmanifest">
     <title>{{ pwa_app_name }}</title>
-    <link rel="stylesheet" href="/static/instance_page.css?v=28">
-    <link rel="stylesheet" href="/static/instance_theme.css?v=124">
+    <link rel="stylesheet" href="/static/instance_page.css?v=29">
+    <link rel="stylesheet" href="/static/instance_theme.css?v=125">
 
 </head>
 <body
@@ -152,9 +152,6 @@
 <div class="container">
     {% include 'instance_brand_header.html' %}
     <div class="top-nav">
-        {% if not auth_disabled %}
-        <a href="/logout" class="top-nav-logout" title="退出登录">退出</a>
-        {% endif %}
         <div class="top-nav-links">
         {% if hedge_plan_nav_visible and display.show_nav_hedge_plan %}
         <a href="/hedge-plan" class="{% if page == 'hedge_plan' %}active{% endif %}">{% if hedge_plan_show_options_options %}期期对冲{% else %}永期对冲{% endif %}</a>