TARIFF-24 forward-port: part 6 reads its last row through nth() (test_named_absence)

Co-Authored-By: Claude <noreply@anthropic.com>

goodwe_controller/test_tariff24_weather.py

@@ -444,12 +444,13 @@ TEN = datetime(2026, 10, 30, 22, 0, tzinfo=L).astimezone(timezone.utc)
 c4, r4 = drive(opts(0.07), fc=lambda t: "fresh" if t < 300.0 else "gone",
                minutes=60, t0=T_R4)
 _held4 = [r for r in r4 if r["held"]]
+_l4 = nth(r4, -1, "last cycle")
 print(f"    R4: forecast lost 21:45; held {len(_held4)} cycles, to "
-      f"{r4[-1]['free_to']}; after 22:00 on={ {r['runs_on'] for r in r4 if r['now'] >= TEN} } "
+      f"{_l4['free_to']}; after 22:00 on={ {r['runs_on'] for r in r4 if r['now'] >= TEN} } "
       f"charging {sum(r['charging'] for r in r4)}")
 check("R4, forecast lost before the next run: while only the day's give run "
       "was under way the hold is that run's end, 22:00, and stays there",
-      present(nth(r4, -1)) and all(r["free_to"] == TEN for r in r4
+      present(_l4) and all(r["free_to"] == TEN for r in r4
                                    if r["t"] >= 5.0)
       and bool(_held4) and all(r["now"] < TEN for r in _held4))
 check("R4: from 22:00 the night's cheap run needs the wider gap: "