The compare page predates the r2 upload provider: r2 versions fell
through to a URL-safety check that throws on app-relative upload URLs,
so their panels rendered nothing and registered no player — the shared
controls drove an empty list and nothing played.
- add an R2Panel mapping a plain video element over the app upload
route to the shared adapter, using the same playback-url resolution
as the main video page
- make play/pause state detection work without the YouTube API loaded
(numeric fallback), so bunny/r2-only comparisons can pause
- re-sync panels that drift more than 350ms from the source player
once per second so playback stays aligned, not just starts aligned
Verified against the running app: both versions play in lockstep
(0.000s measured drift), pause together, and seek together.
Co-Authored-By: Claude Fable 5 <[email protected]>