whois-band/app/routes/artist-by-uuid.tsx, branch master

Separate current/former members with calculable period dates

2026-05-10T13:46:59+00:00

- Add MemberGroup/BandGroup types and groupBandMembers/groupArtistMembers helpers
- Calculate membership duration in months from YYYY-MM since/until values
- Band view splits members into 在籍中 / 元メンバー sections with duration label
- Artist view splits bands into 在籍中 / 元在籍 sections with duration label
- Change since/until inputs to type="month" for structured data entry

Co-Authored-By: Claude Sonnet 4.6

Add members table with membership period and note support

2026-05-09T15:21:04+00:00

Replace band_artists + member_periods with a single members table
(id, band_id, artist_id, role, since, until, note, order_index).
Each row represents one membership period, so rejoining artists
get multiple rows. Existing band_artists data is auto-migrated on
startup. Export format bumped to version 3.

Co-Authored-By: Claude Sonnet 4.6

simplize css

2026-05-09T05:11:33+00:00

Implement band/artist management with version history

2026-05-08T15:27:19+00:00

Full CRUD for bands and artists: UUID + slug URLs, dynamic link
editor, band-artist associations with roles, per-edit revision
snapshots (message + IP). Add README and CLAUDE.md.

Co-Authored-By: Claude Sonnet 4.6