oprava KV1 nabijeni rano misto prodeje

backend/tests/test_planning_dispatch_milp.py

@@ -1818,6 +1818,65 @@ class LoadFirstDispatchTests(unittest.TestCase):
         self.assertEqual(r.export_mode, "PV_SURPLUS")
 
 
+class PreNegativeSellExportTests(unittest.TestCase):
+    """Před prvním sell<0: export přebytku (BA81/KV1 strategie), ne nabíjení + pozdní vývoz."""
+
+    def test_kv1_like_morning_exports_before_negative_sell_window(self) -> None:
+        base = datetime(2026, 5, 22, 6, 45, tzinfo=timezone.utc)
+        slots = [
+            PlanningSlot(
+                interval_start=base + timedelta(minutes=15 * i),
+                buy_price=6.35,
+                sell_price=2.2,
+                pv_a_forecast_w=5000,
+                pv_b_forecast_w=0,
+                load_baseline_w=400,
+                ev1_connected=False,
+                ev2_connected=False,
+                allow_charge=False,
+                allow_discharge_export=False,
+                charge_acquisition_buy_czk_kwh=6.35,
+                future_sell_opportunity_czk_kwh=5.5,
+            )
+            for i in range(8)
+        ] + [
+            PlanningSlot(
+                interval_start=base + timedelta(hours=2),
+                buy_price=6.35,
+                sell_price=-0.3,
+                pv_a_forecast_w=6000,
+                pv_b_forecast_w=0,
+                load_baseline_w=400,
+                ev1_connected=False,
+                ev2_connected=False,
+                allow_charge=False,
+                allow_discharge_export=False,
+                charge_acquisition_buy_czk_kwh=6.35,
+                future_sell_opportunity_czk_kwh=-0.3,
+            ),
+        ]
+        battery = _battery(uc_wh=12_500.0, min_pct=10.0, arb_pct=30.0)
+        battery.max_charge_power_w = 6250
+        hp = SimpleNamespace(rated_heating_power_w=0, tuv_min_temp_c=45.0, tuv_target_temp_c=55.0)
+        grid = SimpleNamespace(
+            max_import_power_w=17_000,
+            max_export_power_w=8000,
+            block_export_on_negative_sell=True,
+        )
+        vehicles = [
+            SimpleNamespace(max_charge_power_w=0, battery_capacity_kwh=1.0, default_target_soc_pct=80.0),
+            SimpleNamespace(max_charge_power_w=0, battery_capacity_kwh=1.0, default_target_soc_pct=80.0),
+        ]
+        soc0 = 0.85 * battery.soc_max_wh
+        results, _, _ = solve_dispatch(
+            slots, battery, hp, grid, [None, None], vehicles, soc0, 50.0, operating_mode="AUTO"
+        )
+        self.assertLess(results[0].grid_setpoint_w, -500, "ráno: přebytek FVE do sítě před sell<0")
+        neg = results[8]
+        self.assertGreater(neg.battery_setpoint_w, 500, "záporný sell: PV do baterie")
+        self.assertEqual(neg.export_mode, "NONE")
+
+
 class Home01PvStoreValueTests(unittest.TestCase):
     """FVE (zejména pole B) nesmí jít do sítě pod hodnotou uložení / večerní peak."""