划转默认折叠，修复币本位到期平衡计算

币本位权利金为币报价，到期平衡按 OKX 结算公式 K/(1±p) 计算；链/持仓/跨式平衡带同步修正。

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

lib/options/templates/options_panel.html

@@ -345,7 +345,7 @@
                     </div>
                 </div>
             </div>
-            <details class="opt-pos-transfer" id="opt-pos-transfer" open>
+            <details class="opt-pos-transfer" id="opt-pos-transfer">
                 <summary class="opt-pos-transfer-head">
                     <span class="opt-pos-transfer-title">划转</span>
                     <span class="opt-pos-transfer-open-hint muted">收起</span>
@@ -380,4 +380,4 @@
     </div>
 </div>
 <script src="/static/options_expiry_countdown.js?v=1"></script>
-<script src="/static/options_panel.js?v=68"></script>
+<script src="/static/options_panel.js?v=69"></script>