Community template gallery

[Ti-03]

Allow users to share and discover custom wallpaper layouts and themes.

Gallery Features:

• Browse community-submitted templates
• Preview before applying
• One-click template import
• Rating/like system
• Categories (minimal, colorful, motivational, etc.)
• Search and filter options
• User profiles for template creators
• Template submission process

Privacy: Templates contain only design/layout settings, no personal data

Labels: enhancement, community