Replace per-entity pages (/roasters, /roasts, /bags, /brews, /gear,
/cafes, /cups) and detail pages with a single tabbed /data view and
a dedicated /add page for entity creation.
- Add /data route with tab-based navigation using Datastar
- Add /add route consolidating all create forms
- Remove per-entity page handlers and standalone templates
- Remove detail page routes, handlers, and templates
- Update ListNavigator to accept String paths for query-param URLs
- Update home page and timeline links to use new /data?type=X paths
- Update nav to reference /data instead of individual entity pages
Replace duplicated inline SVGs across 16 templates with reusable Askama
macros from a new icons.html partial, reducing repetition and making
icon updates a single-point change.
- Create bag_card.html macro used by both home page and bags page
- Replace divergent card styles with consistent amber-themed design
- Add closeBag() JS to bags page for closing bags with confirmation
- Use "Close" button with cross icon consistently across both pages
