Hedge start: re-quote ask and resize OO sheets; add HEDGE_PLAN_BUDGET_BUFFER.

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

lib/common/static/hedge_plan.js

@@ -487,9 +487,9 @@
     else if (b.msg) parts.push(b.msg);
     line.textContent = parts.join(" · ");
     line.title =
-      "预算=min(交易×" +
+      "对冲预算=min(交易×" +
       fmt(b.buf, 2) +
-      ", 单笔)" +
+      ", 单笔) · 缓冲 HEDGE_PLAN_BUDGET_BUFFER" +
       (b.tradingCap != null ? " · 交易×缓冲 " + fmt(b.tradingCap, 2) : "") +
       (b.tradeCap != null ? " · 单笔 " + fmt(b.tradeCap, 2) : "");
     line.classList.toggle("hp-oo-budget-warn", !!(extra && extra.msg) || !b.ok);
@@ -1692,6 +1692,7 @@
           target_price_down: down,
           target_price: up,
           oo_close_mode: state.ooCloseModeEnabled ? state.ooCloseMode : "hold_expiry",
+          oo_sheets_mode: state.ooSheetsMode || "same_sheets",
           leg_a: legPayload(state.legA, ooSheets("hp-oo-sheets-a")),
           leg_b: legPayload(state.legB, ooSheets("hp-oo-sheets-b")),
         };
@@ -1731,19 +1732,28 @@
       });
       setGateLine(d.gates);
       closePreviewModal();
+      const refreshHint =
+        d.refresh && d.refresh.msg ? "\n" + String(d.refresh.msg) : "";
       if (d.partial) {
         alert(
           (d.msg || "半腿失败,已挂待补") +
             (d.plan_id ? "\n计划 #" + d.plan_id : "") +
+            refreshHint +
             "\n请到「进行中的计划」补开缺失腿"
         );
         state.tab = "active";
         syncTabUI();
         void loadActivePlans();
       } else {
-        alert("计划已启动 #" + (d.plan_id || "") + (d.dry_run ? " (dry_run)" : ""));
+        alert(
+          "计划已启动 #" +
+            (d.plan_id || "") +
+            (d.dry_run ? " (dry_run)" : "") +
+            refreshHint
+        );
       }
       void loadGates();
+      if (isOo) void loadChain();
     } catch (e) {
       alert(e.message || String(e));
       syncPreviewStartBtn();