PRICE-02 review: keep an open buy over midnight in the real-year replay; say which variant the kWh figure is

The production-shaped plan sees tomorrow from 13:00, so most buys are sold
the next day or later. The ledger forgot the open buy at each midnight and
booked 46 of 51 sales as holdings: 5 trips, +1.21 EUR. Carried over, the
same decisions give 51 trips, +13.81 EUR, all clearing the threshold.
Decisions are unchanged and identical on the old and new verdict. No
assertion changed.

DECISIONS: 27.5 -> 42.6 kWh is the refresh-:00, tomorrow-known variant; give
the range of the other three.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Bdqr7PiaHcBnzPituu2yTC

goodwe_controller/test_arbitrage.py

@@ -2093,12 +2093,14 @@ def replay_real(days, threshold, unc, *, soc0=50.0, floor=20.0, ceiling=95.0):
     it and never a day on its own. (An earlier version built one plan per
     calendar day with no tomorrow: after the cheap hour no cheap hour was left
     ahead, and the ledger shrank to a few trades that no real site would see.)
+    An open buy is kept over midnight: with tomorrow in view most buys are
+    sold the next day or later (46 of 51 at the shipped threshold).
     """
     soc = soc0
     trades, holdings, bad, neg_sells = [], [], [], 0
+    open_buy = None
     for di, day in enumerate(days):
         nxt = days[di + 1] if di + 1 < len(days) else []
-        open_buy = None
         for i, p in enumerate(day):
             ahead = day[i:] + (nxt if brussels(p.start).hour >= 13 else [])
             plan = TariffPlan(