fix(trend): use money RR, track DCA fills, snapshot before close

Align running-plan header and DCA table with risk-budget RR, record actual fill prices after each leg, and save pre-close snapshots on stop/TP/handoff across hub and exchanges.

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

tests/test_trend_dca_enrich_fills.py

@@ -0,0 +1,67 @@
+"""趋势回调运行中计划：实际成交价重算补仓表与金额盈亏比。"""
+from __future__ import annotations
+
+import json
+import sys
+import unittest
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT))
+
+from strategy_snapshot_lib import attach_trend_dca_levels  # noqa: E402
+from strategy_trend_lib import calc_trend_plan_money_metrics  # noqa: E402
+
+
+class TestTrendDcaEnrichFills(unittest.TestCase):
+    def _base_plan(self, **overrides):
+        plan = {
+            "direction": "long",
+            "stop_loss": 0.329,
+            "take_profit": 0.476,
+            "first_order_amount": 115,
+            "snapshot_available_usdt": 97.98,
+            "risk_percent": 5,
+            "contract_size": 1.0,
+            "grid_prices_json": json.dumps([0.3465, 0.343, 0.3395, 0.336, 0.3325]),
+            "leg_amounts_json": json.dumps([23, 23, 23, 23, 23]),
+            "dca_legs": 5,
+            "first_order_done": 1,
+            "legs_done": 0,
+            "avg_entry_price": 0.3537,
+            "order_amount_open": 115,
+            "target_order_amount": 230,
+            "leg_fill_prices_json": json.dumps([0.3537]),
+        }
+        plan.update(overrides)
+        return plan
+
+    def test_header_money_rr_not_price_rr(self):
+        plan = self._base_plan()
+        metrics = calc_trend_plan_money_metrics(plan)
+        self.assertAlmostEqual(metrics["risk_amount_u"], 4.899, places=2)
+        self.assertIsNotNone(metrics["money_rr"])
+        self.assertLess(metrics["money_rr"], 4.0)
+
+    def test_done_dca_uses_actual_fill_price(self):
+        plan = self._base_plan(
+            legs_done=1,
+            avg_entry_price=0.3512,
+            order_amount_open=138,
+            leg_fill_prices_json=json.dumps([0.3537, 0.3458]),
+        )
+        enriched = attach_trend_dca_levels(plan)
+        levels = enriched["dca_levels"]
+        self.assertEqual(len(levels), 6)
+        dca1 = levels[1]
+        self.assertEqual(dca1["status"], "done")
+        self.assertAlmostEqual(dca1["price"], 0.3458, places=4)
+        self.assertIsNotNone(dca1["avg_entry"])
+        self.assertIsNotNone(dca1["rr"])
+        dca2 = levels[2]
+        self.assertEqual(dca2["status"], "pending")
+        self.assertAlmostEqual(dca2["price"], 0.343, places=4)
+
+
+if __name__ == "__main__":
+    unittest.main()