Adds a media post-processing pipeline that compresses images off the upload
path, in batches, to save storage:
- New media_process_task ent table (media_type discriminator; image now,
video later) + inventory client with idempotent Enqueue/ListPending.
- CompleteUpload enqueues the primary entity when the global switch and the
owner's auto_compress_images opt-in are on and mime/size gates pass.
- A configurable cron enqueues a bounded batch onto a dedicated
MediaProcessQueue (default 1 worker) that compresses each blob via vips
(default) or ffmpeg using EntitySource, then writes the result back as a
new version through manager.Update (quota handled by StorageDiff). A
context guard prevents the write-back from re-enqueueing itself.
- BackendVersion 4.14.1 -> 4.14.2 to fire the migration; new default
settings are idempotently backfilled.
BusyWorkers/metrics expose the queue in /admin/task; result mode 'version'
is the MVP (replace/auto are follow-ups).
thotenn
Aaron Liu
AaronLiu