BioMekka 1.8.49

- Added persistent habitat controls to the local controller Settings page.
- Editable day and night temperature targets.
- Editable mist ON/OFF humidity thresholds.
- Editable spray interval and duration.
- Editable automatic storm chance denominator and day/night humidity arming thresholds.
- Added controller-side validation and safe limits for every editable value.
- Added Restore habitat defaults action.
- Habitat changes apply immediately and are stored separately from credentials in ESP32 Preferences/NVS.