Big refactoring

tests/unit/test_rr_scanner_integration.py

@@ -228,23 +228,23 @@ async def test_scan_ticker_full_flow_quality_selection_and_persistence(
             )
 
     # -- Assert: database persistence --
-    # Old dummy setup should be gone, only the 2 new setups should exist
+    # History is preserved: old setup remains, 2 new setups are appended
     db_result = await scan_session.execute(
         select(TradeSetup).where(TradeSetup.ticker_id == ticker.id)
     )
     persisted = list(db_result.scalars().all())
-    assert len(persisted) == 2, (
-        f"Expected 2 persisted setups (old deleted), got {len(persisted)}"
+    assert len(persisted) == 3, (
+        f"Expected 3 persisted setups (1 old + 2 new), got {len(persisted)}"
     )
 
     persisted_directions = sorted(s.direction for s in persisted)
-    assert persisted_directions == ["long", "short"], (
-        f"Expected ['long', 'short'] persisted, got {persisted_directions}"
+    assert persisted_directions == ["long", "long", "short"], (
+        f"Expected ['long', 'long', 'short'] persisted, got {persisted_directions}"
     )
 
-    # Verify persisted records match returned setups
-    persisted_long = [s for s in persisted if s.direction == "long"][0]
-    persisted_short = [s for s in persisted if s.direction == "short"][0]
+    # Verify latest persisted records match returned setups
+    persisted_long = max((s for s in persisted if s.direction == "long"), key=lambda s: s.id)
+    persisted_short = max((s for s in persisted if s.direction == "short"), key=lambda s: s.id)
 
     assert persisted_long.target == long_setup.target
     assert persisted_long.rr_ratio == long_setup.rr_ratio