0.5.0 — 2026-08-18

Edit together, live

Multiple people can now open and edit the same composition at once. See who is present, follow each other's transcript cursors and playheads, and watch changes arrive without taking over the project.

Features:

Multiple editors can work in the same composition at the same time. There is no takeover step and edits merge live.
The editor header shows who has the composition open, with a full collaborator list on click.
Collaborator markers appear on transcript words and at each person's playhead, including play, pause, seek, and stop updates.

Improvements:

Composition history records collaborative edits with the editor who made them and stays authoritative after the realtime cutover.
A visible connection banner distinguishes initial loading from reconnecting. Edits wait for the shared composition to reconnect instead of silently diverging.
Play, pause, stop, and scrubbing respond faster through audio priming, earlier media warmup, bounded remote reads, and cancellation of stale preview decoders.
Live playback media is prioritized over thumbnail backfills and other background work, which reduces cold-start contention on long episodes.

Fixes:

Older projects are migrated into the shared document format automatically during deployment, including projects created before composition rows existed.
An older browser tab can no longer overwrite a composition after it has moved to live collaboration.

Technical details:

Realtime documents stay in PopCut's existing PostgreSQL database. The service is capacity-gated, health-checked, and tested with concurrent browser sessions before promotion.