nakup ve spicce aby prodal lenvneji, ale nemam jak otestovat poac uz bude po slotu (home01)

backend/services/planning_engine.py

@@ -71,7 +71,7 @@ NEG_BUY_CHARGE_SHORTFALL_PENALTY_CZK_KWH = 100.0
 PRE_NEG_CHARGE_PENALTY_CZK_KWH = 400.0
 PRE_NEG_BATT_EXPORT_SHORTFALL_PENALTY_CZK_KWH = 80.0
 PRE_NEG_BATT_EXPORT_MIN_SELL_CZK_KWH = 1.0
-PLANNER_BUILD_TAG = "2026-06-01-fixed-grid-charge-min-sell-v59"
+PLANNER_BUILD_TAG = "2026-06-01-spot-grid-charge-at-acq-buy-v61"
 # Ranní slabá FVE: neaplikovat pv_store ge_pv=0 (jinak curtail při sell < večerní peak).
 DAWN_LOW_PV_NO_CURTAIL_W = 1500
 # BA81/KV1: PV→bat jen v těsné blízkosti nejnižšího sell v horizontu (≈ poledne), ne při ~3 Kč ráno.
@@ -4053,10 +4053,14 @@ def solve_dispatch(
             fixed_grid_charge_unprofitable = (
                 purchase_fixed_pre
                 and buy_t >= 0.0
-                and (
-                    sell_t < buy_t + min_spread
-                    or fixed_sell_above_horizon_min
-                )
+                and fixed_sell_above_horizon_min
+            )
+            # Spot: mezi-slotová arbitráž — sell<buy ve slotu je normální (marže). Grid→bat jen
+            # když buy v tomto slotu odpovídá levnému nákupu (≤ charge_acquisition), ne 19:00 za 5,5 při acq 3,25.
+            spot_grid_charge_not_cheap_buy = (
+                not purchase_fixed_pre
+                and buy_t >= 0.0
+                and buy_t > charge_acquisition_czk_kwh + min_spread
             )
             fixed_pv_b_export_cap = (
                 purchase_fixed_pre
@@ -4066,7 +4070,7 @@ def solve_dispatch(
                 and not fixed_pre_neg_pv_export
                 and int(s.pv_a_forecast_w) >= DAWN_LOW_PV_NO_CURTAIL_W
             )
-            if fixed_grid_charge_unprofitable:
+            if fixed_grid_charge_unprofitable or spot_grid_charge_not_cheap_buy:
                 prob += bc_gi[t] == 0
             if fixed_high_sell_no_pv_charge:
                 prob += bc_pv[t] == 0