Add grid export/import sensors and improve Deye dashboard ...

- Add template sensor 'Eksport do sieci' (W, positive when exporting to grid)
- Add template sensor 'Pobór z sieci' (W, positive when importing from grid)
  Both derived from sensor.inverter_deye_grid_power (negative=export, positive=import)

- Redesign deye_dashboard.yaml:
  - Add 'Energia teraz' card: PV, zużycie, eksport, pobór, bateria, tryb
  - Add 'Energia dziś' card: daily totals from Deye counters
  - Show programs 4 and 5 (previously missing)
  - Add history graph: PV + eksport + pobór

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Fix heating dashboard: update entity IDs sterownik_1 → ibsystem after server migration ...

- Update all sterownik_1_rs0_id1_* entity refs in heating_dashboard.yaml
- Fix configuration.yaml: update template sensors and utility_meter to use new ibsystem entity IDs
- Remove stray set_heating_curve entry from utility_meter section
- Restore http: section header that was accidentally removed
- All heating dashboard entities now working (T1/T4/T5, moc, COP, energia)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Add G12W battery automation, IBSystem MQTT integration, HA configs ...

Zmiany:
- ha-configs/151/: Kopia konfiguracji HA TEST
  - automations.yaml: Automatyzacje G12W ładowania baterii
  - configuration.yaml: Główna konfiguracja z dashboardami
  - dashboards/: Deye, Ogrzewanie, IBSystem, ID35

- ibsystem/: Integracja IBSystem z MQTT
  - ibsystem2mqtt_v5.py: Bridge IBSystem → MQTT
  - config.yaml: Konfiguracja połączeń
  - ibsystem2mqtt_watchdog.sh: Health check i auto-restart

- docs/: Dokumentacja
  - G12W_BATTERY_AUTOMATION.md: Opis taryfy i automatyzacji
  - IBSYSTEM_MQTT_INTEGRATION.md: Opis integracji MQTT

Kluczowe naprawy:
- Program 6 Deye: zmiana z 21:00 Disabled na 22:00 Grid
- IBSystem: setting.light.X zamiast output.do.X dla sterowania
- Dashboard ID35: prawidłowe entity IDs (ibsystem_rs0_id35_*)
- Watchdog dla ibsystem2mqtt (cron co minutę)