fix(options): cache instruments and backoff on OKX 50011

期权链拉取遇限频时退避重试并回退短缓存,前端提示更友好。

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

lib/common/static/options_panel.js

@@ -1216,16 +1216,25 @@
     try {
       let d = null;
       let lastMsg = "";
-      for (let attempt = 0; attempt < 2; attempt++) {
+      for (let attempt = 0; attempt < 3; attempt++) {
         if (seq !== chainLoadSeq) return;
         d = await apiJson("/api/options/chain?underlying=" + encodeURIComponent(uly));
         if (seq !== chainLoadSeq) return;
         if (d && d.ok && chainHasExpiries(d)) break;
         lastMsg = (d && (d.msg || d.chain_error)) || "暂无到期日";
+        const rateLimited =
+          !!(d && d.rate_limited) ||
+          /50011|Too Many Requests|过于频繁/i.test(String(lastMsg || ""));
         d = null;
-        if (attempt === 0) {
-          if (!soft) setExpirySelectStatus("重试加载到期日…");
-          await new Promise(function (resolve) { setTimeout(resolve, 400); });
+        if (attempt < 2) {
+          if (!soft) {
+            setExpirySelectStatus(
+              rateLimited ? "OKX 限频,稍后重试…" : "重试加载到期日…"
+            );
+          }
+          await new Promise(function (resolve) {
+            setTimeout(resolve, rateLimited ? 1200 * (attempt + 1) : 400);
+          });
         }
       }
       if (seq !== chainLoadSeq) return;
@@ -1240,13 +1249,19 @@
         if (soft) return;
         setExpirySelectStatus("选择到期日");
         const tbody = document.getElementById("opt-strike-tbody");
+        const friendly =
+          /50011|Too Many Requests|过于频繁/i.test(String(lastMsg || ""))
+            ? "OKX 请求过于频繁,请稍后再点「刷新链」"
+            : lastMsg || "暂无到期日,请点「刷新链」";
         if (tbody) {
           tbody.innerHTML =
-            '<tr><td colspan="' + strikeTableColspan() + '" class="muted">' +
-            (lastMsg || "暂无到期日,请点「刷新链」") +
+            '<tr><td colspan="' +
+            strikeTableColspan() +
+            '" class="muted">' +
+            friendly +
             "</td></tr>";
         }
-        alert(lastMsg || "加载到期日失败,请点「刷新链」重试");
+        alert(friendly);
         return;
       }
       const keepExp = soft ? (document.getElementById("opt-exp-select") || {}).value : "";