4dc095463f
Add parentVersionId/branchLabel to versions, enabling git-style branching. New /tree and /promote endpoints; VersionGraph (SVG) component as toggle next to the existing list view. Upload dropzone accepts a parent for branch uploads. Add public share links: new share_links table, /api/v1/share router with authenticated CRUD and a public /public/:token endpoint serving signed stream/waveform URLs. Comments now allow guests (nullable userId, guestName) so artists can leave timestamped feedback without an account. New /listen/:token standalone page with password gate, optional download, and guest comment form. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>