Addresses "some NIP-71 videos don't play / he has multiple links" + "speed
the liveness check + don't render unplayable".
- Phase 1 — multi-source capture: nip71IngestAdapter collectVideoSources()
exposes a `sources` list (all video imeta urls, in order; audio/image
excluded; deduped) so mirrors are preserved (the adapter previously kept
only one url).
- Phase 2 — multi-source liveness: urlHealthController.probeUrlList() probes
every candidate (primary + sources) via the existing video-element
playability probe — healthy as soon as one source plays, offline only if
ALL fail. So a dead primary host no longer hides a video with a live
mirror. (Card hide policy in cardSourceVisibility was already correct.)
- Phase 3 — speed: URL_PROBE_TIMEOUT_MS 8s -> 4s for a fast verdict so dead
cards hide quickly; WebTorrent swarm probe stays generous.
Remaining (TODO #5): player-side fail-over at play time; hide-until-verified
for foreign ingested videos. Tests + mutation-verified (collectVideoSources
video-only filter, probeUrlList first-ok/offline/timeout). 1271/1272 unit
(known UploadModal flake).
Co-Authored-By: Claude Opus 4.8 <[email protected]>
- Refactor `AmbientBackground` to use `ResizeObserver` instead of polling layout in animation loop.
- Implement async chunking for `ExploreDataService` to prevent main thread blocking during heavy calculations.
- Throttle `UrlHealthController` video probes to a maximum of 3 concurrent requests to prevent resource exhaustion.
- Document optimization tasks in `OPTIMIZATION_TASKS.md`.
Co-authored-by: PR0M3TH3AN <[email protected]>
