Adds an optional "What will you be using this for?" capture as a sibling
to the required justification on both propose surfaces, per roadmap #26.
- propose-RFC modal (ProposeModal): optional textarea below the required
"Why is this RFC needed?" pitch, labeled "What will you be using this
RFC for? (optional)".
- propose-PR modal (PRModal): optional textarea below the required
description, labeled "What will you be using this change for?".
- Backend: ProposeBody / OpenPRBody gain an optional `proposed_use_case`
(NULL/omitted accepted, no min, 8000-char cap matching the existing
free-text bound). Persisted to a new canonical side table
`proposed_use_cases` keyed by PR number, mirrored onto the cache
columns added by migration 021. Returned on the proposal list/detail,
RFC detail (by slug), and PR detail endpoints.
- Display: ProposalView, RFCView (main only), and PRView render the
captured use case with a muted "left blank" treatment when NULL.
- migration 021: nullable `proposed_use_case` on cached_rfcs/cached_prs
plus the reconcile-proof `proposed_use_cases` truth table.
- New vertical test_proposed_use_case_vertical: persists+returns when
supplied, accepted as NULL/omitted, for both surfaces.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Ben Stull
7c6c906db2