[playlists] Speed up the project playlist endpoint#1108
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Annotation JSONB blobs are the heaviest part of a playlist and are now loaded on demand by the web client. Make their inclusion opt-in (with_annotations, default True) and have the logged-in project playlist endpoint opt out. The shared/guest path keeps the default so the guest player, which has no lazy-loading, still receives annotations inline. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
set_preview_files_for_entities loaded full PreviewFile ORM objects for every revision of every entity (~7k rows for a 400-shot playlist), then serialized the whole enriched dict a second time. Hydrating that many ORM instances dominated the request (it was the bulk of the ~1.8s server time together with the heavy JSONB columns). - Select only the scalar columns we serialize, as Row tuples, skipping ORM hydration and the heavy `annotations`/`data` JSONB (annotations only when the caller asked for them). Mirrors get_preview_files_for_entity(). - Drop the redundant final serialize_value() pass: the dict is already JSON-safe (playlist.serialize() + BuildJob.present() + per-row serialized values). Server time for a 414-shot / ~7k-revision playlist dropped from ~1.8s to ~0.1s (with the earlier annotation-blob removal). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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