Show BTC/ETH instead of generic 币 on live option premium.

Cache-bust hedge_plan.js to v67.

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

lib/common/static/hedge_plan.js

@@ -1141,8 +1141,15 @@
       "<span>标记 <strong>" +
       fmt(opt.mark_px, 4) +
       "</strong></span>" +
-      '<span title="权利金(币/U,U按买币参考指数)">权利金 <strong>' +
-      (opt.premium_coin != null ? fmt(opt.premium_coin, 4) + " 币" : "—") +
+      '<span title="权利金(标的币/U,U按期权指数)">权利金 <strong>' +
+      (opt.premium_coin != null
+        ? fmt(opt.premium_coin, 4) +
+          " " +
+          (card.underlying ||
+            String(opt.inst_id || "").split("-")[0] ||
+            optionCoin() ||
+            "ETH")
+        : "—") +
       (opt.premium_usdt != null ? " / " + fmt(opt.premium_usdt, 2) + " U" : "") +
       "</strong></span>" +
       '<span class="' +

lib/hedge_plan/templates/hedge_plan_panel.html

@@ -508,4 +508,4 @@
     </div>
   </div>
 </div>
-<script src="/static/hedge_plan.js?v=66"></script>
+<script src="/static/hedge_plan.js?v=67"></script>