OPT-11 P4 review: Cheap hours ignores the plan; midnight-stale forecast; stricter ids

- Cheap hours only fills to the ceiling with or without a forecast, as the
  design (section 1) says. Skipping the sun's share cost 0.31 EUR on real
  2026 prices (29.72 against P3's 29.41) and saved nothing on the P3 set.
- A forecast reading from before local midnight is stale: until the
  integration refreshes, "left today" is still yesterday's 0 and
  "tomorrow" is really today.
- Forecast entity ids must be sensor.[a-z0-9_]+ (they go into the
  /api/states/<id> path).
- House profile: a stored day that is not a date, or is after today, is
  dropped instead of kept forever.
- Text: the forecast line says "for the rest of today"; the learning line
  no longer promises "tomorrow" (a plan needs one full day).
- Tests for four surviving review mutants (hour sample floor, the dear run
  after the cheap run, share by room, daytime use) and the fixes above.
- Replay tool: `--fc zero` (a forecast of no sun).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

goodwe_controller/app/ui_text/nl.json

@@ -281,7 +281,7 @@
       "tops_up": "Te weinig zon voorspeld, dus ze laadt wat van het net.",
       "no_forecast": "Geen zonneprognose, dus ze laadt alleen met zonne-energie."
     },
-    "solar": {"line": "Zonneprognose vandaag: {kwh}, we rekenen op {count}. Bijgewerkt om {at}.", "no_forecast": "Nu geen zonneprognose, dus Overschot zonne-energie laadt alleen met zon.", "learning": "De add-on leert eerst het verbruik van uw huis. Het plan start morgen."},
+    "solar": {"line": "Zonneprognose voor de rest van vandaag: {kwh}, we rekenen op {count}. Bijgewerkt om {at}.", "no_forecast": "Nu geen zonneprognose, dus Overschot zonne-energie laadt alleen met zon.", "learning": "De add-on leert eerst het verbruik van uw huis. Het plan start na één volle dag."},
     "today": {
       "not_planned": "Nog niet gepland.",
       "no_runs": "Vandaag geen goedkope of dure uren meer.",