Add delete for closed trade records.

Only closed groups can be removed from local history; equity is unchanged.

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

backend/app/api/trades.py

@@ -190,3 +190,46 @@ async def group_detail(
         "fills": [_row(x) for x in fills],
         "pnl_summary": gr.get("pnl_summary"),
     }
+
+
+@router.delete("/groups/{group_id}")
+async def delete_group(
+    group_id: str, _user: Annotated[str, Depends(require_user)]
+) -> dict:
+    """删除一条已平仓交易记录（组/成交/残留/相关账本流水）。不回滚权益。"""
+    db = get_db()
+    g = db.fetchone("SELECT * FROM groups WHERE group_id=?", (group_id,))
+    if g is None:
+        raise HTTPException(status_code=404, detail="group not found")
+    status = str(g["status"] or "").lower()
+    if status != "closed":
+        raise HTTPException(
+            status_code=409,
+            detail="只能删除已平仓记录；持仓中或开仓中的组不可删",
+        )
+    pos = db.fetchone("SELECT group_id FROM positions WHERE id=1")
+    if pos and str(pos["group_id"] or "") == group_id:
+        raise HTTPException(
+            status_code=409,
+            detail="当前持仓仍引用该组，不可删除",
+        )
+    with db._lock:
+        db._conn.execute("DELETE FROM fills WHERE group_id=?", (group_id,))
+        db._conn.execute(
+            "DELETE FROM residual_options WHERE group_id=?", (group_id,)
+        )
+        db._conn.execute(
+            "DELETE FROM ledger_entries WHERE group_id=?", (group_id,)
+        )
+        cur = db._conn.execute(
+            "DELETE FROM groups WHERE group_id=? AND status='closed'",
+            (group_id,),
+        )
+        if cur.rowcount <= 0:
+            db._conn.rollback()
+            raise HTTPException(
+                status_code=409,
+                detail="删除失败：组状态已变更",
+            )
+        db._conn.commit()
+    return {"ok": True, "group_id": group_id}

backend/app/strategy/open_capacity.py

@@ -139,34 +139,34 @@ def assess_open_capacity(
 
     idx, ask_book = _index_and_option_ask()
     ask = float(option_ask) if option_ask is not None and float(option_ask) > 0 else ask_book
-        if hedge == "option_option":
-            ca = float(call_ask) if call_ask is not None and float(call_ask) > 0 else None
-            pa = float(put_ask) if put_ask is not None and float(put_ask) > 0 else None
-            if ca is None or pa is None:
-                # 回退：用监控对 call/put 卖一
-                try:
-                    from .session import get_session
+    if hedge == "option_option":
+        ca = float(call_ask) if call_ask is not None and float(call_ask) > 0 else None
+        pa = float(put_ask) if put_ask is not None and float(put_ask) > 0 else None
+        if ca is None or pa is None:
+            # 回退：用监控对 call/put 卖一
+            try:
+                from .session import get_session
 
-                    snap = get_session().snapshot()
-                    if ca is None and snap.call and snap.call.ask:
-                        ca = float(snap.call.ask)
-                    if pa is None and snap.put and snap.put.ask:
-                        pa = float(snap.put.ask)
-                except Exception:
-                    pass
-            cush = float(
-                ledger.get_setting_float("oo_budget_cushion", s.oo_budget_cushion)
-                or s.oo_budget_cushion
-            )
-            cush = min(1.0, max(0.5, cush))
-            if ca is not None and pa is not None and ca > 0 and pa > 0:
-                # 与定仓一致：按预留后的权利金需求估资金门
-                premium_need = (ca + pa) * opt_qty * (1.0 + fee_rate) * cush
-            else:
-                premium_need = None
-            margin_need = 0.0
-            perp_qty = 0.0
+                snap = get_session().snapshot()
+                if ca is None and snap.call and snap.call.ask:
+                    ca = float(snap.call.ask)
+                if pa is None and snap.put and snap.put.ask:
+                    pa = float(snap.put.ask)
+            except Exception:
+                pass
+        cush = float(
+            ledger.get_setting_float("oo_budget_cushion", s.oo_budget_cushion)
+            or s.oo_budget_cushion
+        )
+        cush = min(1.0, max(0.5, cush))
+        if ca is not None and pa is not None and ca > 0 and pa > 0:
+            # 与定仓一致：按预留后的权利金需求估资金门
+            premium_need = (ca + pa) * opt_qty * (1.0 + fee_rate) * cush
         else:
+            premium_need = None
+        margin_need = 0.0
+        perp_qty = 0.0
+    else:
         margin_need = (float(idx) * perp_qty / lev) if idx and idx > 0 else None
         premium_need = (
             float(ask) * opt_qty * (1.0 + fee_rate) if ask is not None and ask > 0 else None