Add OKX trading-account USDC auto-swap and lock exit target while in position.

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

backend/app/sim/matcher.py

@@ -2,6 +2,7 @@
 
 from __future__ import annotations
 
+import logging
 import time
 from dataclasses import dataclass
 from typing import Any
@@ -21,6 +22,8 @@ from .pricing import (
     resolve_option_close_bid,
 )
 
+logger = logging.getLogger(__name__)
+
 # 禁止新开仓的本地仓位状态（实盘防卡）
 BLOCKING_STATUSES = frozenset(
     {"open", "half_open", "option_closed_perp_pending", "opening"}
@@ -332,6 +335,15 @@ class Matcher:
             )
             self.db._conn.commit()
 
+        try:
+            from ..strategy.exits import lock_trade_exit_target
+
+            lock_trade_exit_target(
+                self.db, group_id=group_id, initial_premium=initial_premium
+            )
+        except Exception:
+            logger.exception("lock exit target failed group=%s", group_id)
+
         return OpenResult(
             ok=True,
             group_id=group_id,
@@ -585,7 +597,8 @@ class Matcher:
                 """UPDATE positions SET
                     group_id=NULL, perp_side=NULL, perp_qty_eth=0, perp_entry_px=NULL,
                     option_inst_id=NULL, option_side=NULL, option_qty_eth=0, option_qty_contracts=0,
-                    option_entry_px=NULL, entry_index_px=NULL, initial_premium=0, status='flat'
+                    option_entry_px=NULL, entry_index_px=NULL, initial_premium=0,
+                    exit_target_usdt=NULL, status='flat'
                     WHERE id=1"""
             )
             self.db._conn.commit()
@@ -756,7 +769,8 @@ class Matcher:
                 """UPDATE positions SET
                     group_id=NULL, perp_side=NULL, perp_qty_eth=0, perp_entry_px=NULL,
                     option_inst_id=NULL, option_side=NULL, option_qty_eth=0, option_qty_contracts=0,
-                    option_entry_px=NULL, entry_index_px=NULL, initial_premium=0, status='flat'
+                    option_entry_px=NULL, entry_index_px=NULL, initial_premium=0,
+                    exit_target_usdt=NULL, status='flat'
                     WHERE id=1"""
             )
             self.db._conn.commit()
@@ -1098,6 +1112,11 @@ class Matcher:
             "move_points": move,
             "move_pct": move_pct,
             "initial_premium": initial_premium,
+            "exit_target_usdt": (
+                float(pos["exit_target_usdt"])
+                if pos.get("exit_target_usdt") is not None
+                else None
+            ),
             "premium_gap": premium_gap,
             "status": pos.get("status"),
         }