- Added 'category' column to routine_templates table
- Categorized all 12 templates into: Daily Routines, Getting Things Done, Health & Body, Errands
- Added /api/templates/categories endpoint to list unique categories
- Updated /api/templates to support filtering by category query param
- Redesigned templates page with collapsible accordion sections by category
- Categories are sorted in logical order (Daily → Work → Health → Errands)
- All categories expanded by default for easy browsing
