- Add login wallpaper upload, preview, and deletion in Hospital Profile settings
- Redesign login page with right-docked form and left hospital branding hero
- Implement clean blank neutral fallback when no wallpaper is configured
- Add automated unit tests for wallpaper rendering and fallback behavior
- Add migration 2026-03-18-000028_CreateCityAutoUTable.php to create
the missing city_auto_u table (city, district, state columns) used
by PatientModel::getCitySuggestions() — resolves 500 on /billing/patient/city
- Fix HospitalProfile::save() to check directory creation success before
moving uploaded logo files; returns clean JSON error instead of
throwing HTTPException when public/assets/images/ is not writable
