Split risk policy into its own navigation tab.

Move read-only risk control docs to /risk_policy before settings; keep transfers and exports on the settings page.

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

lib/instance/templates/embed_shell.html

@@ -39,12 +39,13 @@
         {% if options_nav_visible %}
         <a href="/options" data-embed-tab="options" class="{% if initial_tab == 'options' %}active{% endif %}">期权</a>
         {% endif %}
+        <a href="/risk_policy" data-embed-tab="risk_policy" class="{% if initial_tab == 'risk_policy' %}active{% endif %}">风控说明</a>
         <a href="/settings" data-embed-tab="settings" class="{% if initial_tab == 'settings' %}active{% endif %}">系统设置</a>
     </nav>
     <div id="embed-flash" class="flash" style="display:none" role="status"></div>
 
     {% include 'instance_header_panel.html' %}
-    {% if initial_tab != 'settings' and include_transfer_block %}
+    {% if initial_tab not in ('settings', 'risk_policy') and include_transfer_block %}
     {% include 'instance_top_bar.html' %}
     {% endif %}
 
@@ -89,6 +90,6 @@ const ORDER_ENTRY_MODEL_CODE_TO_CATEGORY = {{ entry_model_code_to_category | toj
 <script src="/static/key_monitor_form.js?v=2"></script>
 {% include 'embed_boot_scripts.html' %}
 <script src="/static/instance_live.js?v=3"></script>
-<script src="/static/instance_embed.js?v=15"></script>
+<script src="/static/instance_embed.js?v=16"></script>
 </body>
 </html>