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/instance_header_panel.html

@@ -32,6 +32,7 @@
                 <span class="risk-status-badge risk-status-{{ risk_status.status|default('normal') }}" id="account-risk-badge" role="status" title="{{ risk_status.reason|default('', true) }}" data-status-label="{{ risk_status.status_label|default('正常') }}"{% if risk_status.freeze_until_ms %} data-freeze-until-ms="{{ risk_status.freeze_until_ms }}"{% endif %}>{{ risk_status.status_label|default('正常') }}</span>
             </div>
             {% include 'instance_theme_toggle.html' %}
+            <a href="/logout" class="header-logout-btn" title="退出登录">退出</a>
         </div>
     </div>
     <div class="instance-header-stats-wrap instance-desktop-only">