Replace 期期 equal-split with long/short bias sizing and env ratio controls.

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

lib/common/static/hedge_plan.js

@@ -29,6 +29,8 @@
     legB: null,
     market: null,
     ooSheetsMode: "same_sheets",
+    ooBiasSplitBy: "budget",
+    ooBiasRatio: 0.7,
     ooCloseModeEnabled: root.getAttribute("data-oo-close-mode-enabled") !== "0",
     ooCloseMode: "close_all",
     direction: "long",
@@ -335,6 +337,20 @@
     return Math.min(out, Math.floor(d + 1e-12));
   }
 
+  function normalizeOptCP(ot) {
+    const u = String(ot || "").toUpperCase();
+    if (u.indexOf("C") === 0) return "C";
+    if (u.indexOf("P") === 0) return "P";
+    return "";
+  }
+
+  function ooSizeModeLabel(mode) {
+    if (mode === "long_bias") return "做多";
+    if (mode === "short_bias") return "做空";
+    if (mode === "split_budget") return "均分";
+    return "同张数";
+  }
+
   function suggestOoSheetsLocal(budget, mode) {
     const costA = unitCost(state.legA);
     const costB = unitCost(state.legB);
@@ -344,24 +360,61 @@
     if (!(costA > 0) || !(costB > 0)) {
       return { sheetsA: 0, sheetsB: 0, premium: 0, ok: false, msg: "缺少有效卖一价,无法建议张数" };
     }
+    let ratio = Number(state.ooBiasRatio);
+    if (!(ratio > 0) || !(ratio < 1)) ratio = 0.7;
+    const splitBy = state.ooBiasSplitBy === "sheets" ? "sheets" : "budget";
+    const pair = costA + costB;
+    let nSame = pair > 0 ? Math.floor(budget / pair + 1e-12) : 0;
+    nSame = capByDepth(nSame, state.legA && state.legA.ask_sz);
+    nSame = capByDepth(nSame, state.legB && state.legB.ask_sz);
+
     let nA = 0;
     let nB = 0;
-    if (mode === "split_budget") {
+    if (mode === "long_bias" || mode === "short_bias") {
+      const aCP = normalizeOptCP(state.legA && state.legA.opt_type);
+      const bCP = normalizeOptCP(state.legB && state.legB.opt_type);
+      if (!((aCP === "C" && bCP === "P") || (aCP === "P" && bCP === "C"))) {
+        return { sheetsA: 0, sheetsB: 0, premium: 0, ok: false, msg: "做多/做空需一腿 Call、一腿 Put" };
+      }
+      const callIsA = aCP === "C";
+      const majorIsCall = mode === "long_bias";
+      let nCall = 0;
+      let nPut = 0;
+      if (splitBy === "sheets") {
+        if (nSame < 2) {
+          return { sheetsA: 0, sheetsB: 0, premium: 0, ok: false, msg: "同张数规模不足 2,无法按比例拆分" };
+        }
+        let majorN = Math.round(nSame * ratio);
+        majorN = Math.max(1, Math.min(majorN, nSame - 1));
+        const minorN = nSame - majorN;
+        nCall = majorIsCall ? majorN : minorN;
+        nPut = majorIsCall ? minorN : majorN;
+      } else {
+        const majBudget = budget * ratio;
+        const minBudget = budget * (1 - ratio);
+        const costCall = callIsA ? costA : costB;
+        const costPut = callIsA ? costB : costA;
+        if (majorIsCall) {
+          nCall = Math.floor(majBudget / costCall + 1e-12);
+          nPut = Math.floor(minBudget / costPut + 1e-12);
+        } else {
+          nPut = Math.floor(majBudget / costPut + 1e-12);
+          nCall = Math.floor(minBudget / costCall + 1e-12);
+        }
+      }
+      nA = callIsA ? nCall : nPut;
+      nB = callIsA ? nPut : nCall;
+      nA = capByDepth(nA, state.legA && state.legA.ask_sz);
+      nB = capByDepth(nB, state.legB && state.legB.ask_sz);
+    } else if (mode === "split_budget") {
       const half = budget / 2;
       nA = Math.floor(half / costA + 1e-12);
       nB = Math.floor(half / costB + 1e-12);
+      nA = capByDepth(nA, state.legA && state.legA.ask_sz);
+      nB = capByDepth(nB, state.legB && state.legB.ask_sz);
     } else {
-      const pair = costA + costB;
-      const n = pair > 0 ? Math.floor(budget / pair + 1e-12) : 0;
-      nA = n;
-      nB = n;
-    }
-    nA = capByDepth(nA, state.legA && state.legA.ask_sz);
-    nB = capByDepth(nB, state.legB && state.legB.ask_sz);
-    if (mode !== "split_budget") {
-      const n = Math.min(nA, nB);
-      nA = n;
-      nB = n;
+      nA = nSame;
+      nB = nSame;
     }
     const premium = costA * nA + costB * nB;
     const ok = nA >= 1 && nB >= 1;
@@ -400,7 +453,7 @@
     const line = $("hp-oo-budget-line");
     if (!line) return;
     const b = resolveOoBudget();
-    const sizeLabel = state.ooSheetsMode === "split_budget" ? "均分" : "同张数";
+    const sizeLabel = ooSizeModeLabel(state.ooSheetsMode);
     const closeLabel = !state.ooCloseModeEnabled
       ? ""
       : state.ooCloseMode === "hold_expiry"
@@ -447,8 +500,15 @@
       } else if (d.oo_close_mode_default && !state._ooCloseModeTouched) {
         state.ooCloseMode = d.oo_close_mode_default === "hold_expiry" ? "hold_expiry" : "close_all";
       }
+      if (d.oo_bias_split_by != null) {
+        state.ooBiasSplitBy = d.oo_bias_split_by === "sheets" ? "sheets" : "budget";
+      }
+      if (d.oo_bias_ratio != null && Number(d.oo_bias_ratio) > 0 && Number(d.oo_bias_ratio) < 1) {
+        state.ooBiasRatio = Number(d.oo_bias_ratio);
+      }
       syncOoCloseModeUI();
       setGateLine(d);
+      if (state.mode === "options_options") autoFillOoSheets();
     } catch (e) {
       setGateLine({ can_preview: false, can_start: false, reasons: [e.message], is_full_margin: false });
     }