fix: keep exchange API only in env config, remove from system settings.

EOF

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

lib/instance/templates/env_config_panel.html

@@ -4,7 +4,7 @@
         <div class="env-config-head-row">
             <div>
                 <h2>env 配置</h2>
-                <p class="settings-env-hint env-config-head-hint">按分类修改,改完点保存.含「需重启」的项请用「保存并重启」.<strong>AI 配置</strong>请在中控 → 系统设置 → AI 配置统一维护.</p>
+                <p class="settings-env-hint env-config-head-hint">按分类修改,改完点保存.含「需重启」的项请用「保存并重启」.交易所 API 在本页「交易所与实盘」.<strong>AI 配置</strong>请在中控 → 系统设置 → AI 配置统一维护.</p>
             </div>
             <div class="env-config-toolbar">
                 <button type="button" class="btn-primary btn-sm" id="env-config-save">保存</button>