refactor: unify three-exchange instance UI with shared templates

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

lib/instance/templates/instance_top_bar.html

@@ -0,0 +1,13 @@
+{# 三所统一顶栏：划转 + 手动划转 + 可选整点前开仓开关 #}
+{% include 'gate_transfer_block.html' %}
+{% if ui_open_guard_enabled %}
+<div class="rule-tip" id="open-guard-bar" style="display:flex;align-items:center;gap:10px;flex-wrap:wrap">
+    <label style="display:flex;align-items:center;gap:6px;cursor:pointer;color:#cfd3ef">
+        <input type="checkbox" id="allow-open-before-reset" {% if not open_guard_enabled %}checked{% endif %}>
+        允许北京时间 {{ reset_hour }}:00 前开仓（斐波成交登记、人工下单）
+    </label>
+    <span id="open-guard-status" style="color:#8892b0;font-size:.75rem">
+        {% if open_guard_enabled %}已限制：{{ reset_hour }}:00 前不可开仓{% else %}已放开：{{ reset_hour }}:00 前允许开仓{% endif %}
+    </span>
+</div>
+{% endif %}