Fix target-exit mismatch: correct close reason and executable PnL gate.

Locked premium exits no longer label as fixed_usdt; mark/book optimism no longer triggers close into a realized loss.

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

backend/tests/test_exit_lock.py

@@ -5,6 +5,21 @@ from __future__ import annotations
 from app.strategy.exits import check_exits, resolve_exit_target
 
 
+def test_locked_premium_mode_keeps_premium_reason() -> None:
+    """锁定目标金额后，平仓原因仍应按权利金倍数模式标记，而非写死 fixed_usdt。"""
+    d = check_exits(
+        net_pnl=25.0,
+        exit_mode="premium_multiple",
+        net_profit_target=15.0,
+        premium_exit_multiple=1.0,
+        initial_premium=20.0,
+        locked_exit_target=20.0,
+    )
+    assert d.should_close is True
+    assert d.target == 20.0
+    assert d.reason == "premium_multiple"
+
+
 def test_locked_target_ignores_setting_drift() -> None:
     d = check_exits(
         net_pnl=20.0,

backend/tests/test_live_pnl.py

@@ -45,14 +45,14 @@ class _FakeClient:
         return -1.5
 
 
-def test_enrich_live_unrealized_entry_fee_times_two() -> None:
+def test_enrich_live_unrealized_keeps_book_net_plus_funding() -> None:
     base = {
         "has_position": True,
         "group_id": "G1",
         "perp_side": "short",
         "perp_upl": 1.0,
         "option_upl": 5.0,
-        "est_close_fees": 9.9,
+        "est_close_fees": 0.8,
         "net_pnl": -3.9,
     }
 
@@ -69,12 +69,12 @@ def test_enrich_live_unrealized_entry_fee_times_two() -> None:
         perp_side="short",
         open_at_ms=1,
     )
-    assert out["perp_upl"] == 8.0
+    assert out["perp_upl"] == 1.0  # 盘口可平
+    assert out["perp_upl_exchange"] == 8.0
     assert out["option_upl"] == 5.0
     assert out["fees_paid"] == 0.5
     assert out["funding_usdt"] == -1.5
-    # 离场费按入场估算
-    assert out["est_close_fees"] == 0.5
-    # 8 + 5 - 0.5*2 + (-1.5) = 10.5
-    assert abs(out["net_pnl"] - 10.5) < 1e-9
-    assert out["pnl_source"] == "live_exchange"
+    assert out["est_close_fees"] == 0.8
+    # 盯盘净利 = 盘口净利 + 资金费，不用标记 UPL 覆盖
+    assert abs(out["net_pnl"] - (-3.9 - 1.5)) < 1e-9
+    assert out["pnl_source"] == "live_book_plus_funding"