Show options budget buffer ratio in open-order rule tip.

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

lib/common/static/options_panel.js

@@ -16,6 +16,11 @@
     strikeExpandAll: false,
     /** 环境 OKX_OPTIONS_CHAIN_ASK_LIQ_FILTER_ENABLED;链接口可热更新 */
     askLiqFilter: root.dataset.askLiqFilter !== "0",
+    budgetBuffer: (function () {
+      const raw = root.dataset.budgetBuffer;
+      const n = raw != null && raw !== "" ? Number(raw) : NaN;
+      return !Number.isNaN(n) && n > 0 ? n : 0.95;
+    })(),
     chain: panelCache.chain || null,
     selectedInst: null,
     orderQuote: null,
@@ -568,6 +573,15 @@
     }
   }
 
+  function applyBudgetBuffer(raw) {
+    if (raw == null || raw === "") return;
+    const buf = Number(raw);
+    if (Number.isNaN(buf) || buf <= 0) return;
+    state.budgetBuffer = buf;
+    const el = document.getElementById("opt-budget-buf");
+    if (el) el.textContent = fmt(buf, 2);
+  }
+
   function renderIndexLine() {
     const idx = state.chain && state.chain.index_px;
     const dte = state.chain && state.chain.chain_max_dte_days;
@@ -575,6 +589,9 @@
       const el = document.getElementById("opt-chain-dte");
       if (el) el.textContent = String(Math.round(dte));
     }
+    if (state.chain && state.chain.budget_buffer != null) {
+      applyBudgetBuffer(state.chain.budget_buffer);
+    }
     const line = document.getElementById("opt-index-line");
     if (line) {
       const liqHint = askLiqFilterOn() ? "仅显示卖一深度≥1张" : "显示全部卖一(含估算~)";
@@ -2055,6 +2072,7 @@
   }
 
   function bootOptionsPanel() {
+    applyBudgetBuffer(state.budgetBuffer);
     updateSizeInputs();
     syncMoneyFilterButtons();
     syncChainViewUI();