Split proposals into High Confidence / Needs Review tabs. Extract
proposal table into _ProposalTable partial view. Show rule status
(Create/Update/Exists) based on existing category mappings. Persist
proposals in hidden form field to survive app restarts. Add per-tab
select-all and improved error reporting on apply.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
