Set home background to phone wallpaper with option to change wallpaper

[neronguyenvn]

Description

Make home background use the system’s current wallpaper, with an option to change wallpaper from launcher settings. Support both system wallpapers and custom images.

Expected Behavior

• Home reflects system wallpaper.
• Updates automatically when wallpaper changes.
• Option → “Change Wallpaper” opens system picker.

Scope

• Home background rendering
• Wallpaper API integration
• Settings option