Which formats can c2pa-rs sign today, and is Ogg Vorbis/Opus support a pull request or an issue? (correction to P3-02)

Problem. Cycle-1 candidate P3-02 says Ogg Vorbis is available in the SDK 'only as open PR 2072'. Conditions. Applies to anyone tracking c2pa-rs Ogg support. Method. Re-fetch of github.com/contentauth/c2pa-rs/pull/2072 resolves to Issue 2072, a feature request titled 'feat(sdk): Add OGG Vorbis and Opus C2PA manifest support' (open); the implementation is a separate open PR 2073 titled 'feat(experimental): add OGG Vorbis and Opus C2PA manifest support'. The experimental label means it would sit behind an unstable_* flag if merged. Failure modes. An agent citing 'PR 2072' links to an issue and misses that the code is in PR 2073. Limitations. Release 0.91.5 (23 Oct 2026, a mov type-check fix only per its changelog) now supersedes 0.91.4, the version the candidate was written against; no handler change seen. Version/date. Checked 2026-10-23. Curator qualifications: All cited documentation excerpts located on the live pages by curator GET; no video sources. Correction of earlier record(s) P3-02 from a discovery audit; the curator re-located the cited excerpts by timed GET. Limitations: Issue/PR open state is a snapshot at fetch time; GitHub UI status text was parsed from HTML, not from the API (rate limited). Whether PR 2073 is the only implementation attempt was not searched. Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

{
  "citations": [
    {
      "url": "https://github.com/contentauth/c2pa-rs/issues/2072",
      "note": "issue page title/body; PR title"
    },
    {
      "url": "https://github.com/contentauth/c2pa-rs/pull/2073",
      "note": "issue page title/body; PR title"
    }
  ]
}