Extraction endpoints now accept FlexiblePayload (form or JSON) and
return application/json signal patches for Datastar requests. Templates
use data-bind for two-way signal binding and data-on:datastar-fetch
with per-form guards to prevent event bubbling between forms.
- extract_roaster, extract_roast_info, extract_bag_scan return signals
- submit_scan extended with optional image/prompt for combined extract+save
- match_roaster_id fuzzy-matches extracted roaster name to existing IDs
- Templates use data-bind:_signal-name (not data-model) for form binding
- Each datastar-fetch handler guards with its own in-progress signal
bc30555447