Fix 期期 sheets bias: split total 2n from same-sheets, not n.

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

lib/hedge_plan/hedge_plan_calc_lib.py

@@ -243,9 +243,12 @@ def suggest_oo_sheets(
         return _fail("缺少有效卖一价,无法建议张数")
 
     pair = cost_a + cost_b
-    n_same = int(math.floor(budget / pair + 1e-12)) if pair > 0 else 0
-    n_same = _cap_sheets_by_ask_depth(n_same, ask_sz_a)
-    n_same = _cap_sheets_by_ask_depth(n_same, ask_sz_b)
+    n_pair = int(math.floor(budget / pair + 1e-12)) if pair > 0 else 0
+    # 与同张数一致:先按预算得 n,再各自深度封顶后取 min
+    n_same = min(
+        _cap_sheets_by_ask_depth(n_pair, ask_sz_a),
+        _cap_sheets_by_ask_depth(n_pair, ask_sz_b),
+    )
 
     if m == "same_sheets":
         n_a = n_same
@@ -262,11 +265,13 @@ def suggest_oo_sheets(
             return _fail(err)
         major_is_call = m == "long_bias"
         if split_by == "sheets":
-            if n_same < 2:
-                return _fail("同张数规模不足 2,无法按比例拆分")
-            major_n = int(round(n_same * ratio))
-            major_n = max(1, min(major_n, n_same - 1))
-            minor_n = n_same - major_n
+            # 总张数 = 同张数两侧合计(每腿 n → 共 2n),再按比例拆到 Call/Put
+            total = int(n_same) * 2
+            if total < 2:
+                return _fail("同张数总规模不足 2,无法按比例拆分")
+            major_n = int(round(total * ratio))
+            major_n = max(1, min(major_n, total - 1))
+            minor_n = total - major_n
             n_call = major_n if major_is_call else minor_n
             n_put = minor_n if major_is_call else major_n
         else:

lib/hedge_plan/templates/hedge_plan_panel.html

@@ -301,4 +301,4 @@
     </div>
   </div>
 </div>
-<script src="/static/hedge_plan.js?v=23"></script>
+<script src="/static/hedge_plan.js?v=24"></script>