- Add TimelineBrewData struct to domain layer to carry raw brew
parameters needed for repeating a brew
- Extend timeline SQL query to LEFT JOIN with brews table and fetch
brew data (bag_id, grinder_id, brewer_id, coffee_weight, etc.)
- Add brew_data field to TimelineEventView for template access
- Add is_authenticated to TimelineChunkTemplate for auth-aware chunks
- Add "brew again" button to timeline month partial, visible only for
authenticated users on brew events
- Server returns reload script when brew is created from timeline page,
using Datastar's fragment patching to append script to body
