PandaStudio

Concurrent editor saves: project.batch retries only the conflicting command (up to three attempts with a short backoff), preserving earlier steps. Async transcription, voiceover, audio cleanup and rendered graphics, plus face tracking and auto-reframe, plus downloaded-media placement, merge computed results onto the latest project and retry saves. They preserve unrelated editor edits; transcription also reapplies current word fixes and skips clips removed during the job. Explicit expectedRevision preconditions still apply. Exhausted conflicts use code: "revision_conflict", status: 409, expected, and actual: HTTP 409 for thrown save conflicts, results[].details for batch failures, and job.errorDetails for failed jobs. Re-read before trying again; do not overwrite with an old project snapshot.