Post-restart completion recovery joined directory/filename, losing the base-directory component the Task constructor strips on custom roots. An unresolvable queue head (offline server) broke out of the drain loop, stalling every other queued download; the drain now excludes it and continues. The download tree also read all-cancelled or partial containers as completed.
The queued-download resume was a one-shot on the first online client, so a persisted row skipped because its server was offline stayed queued until restart. The resume now re-fires whenever a server comes online that the last resume did not cover (including reconnects), and a resume landing mid-drain re-drives the pass instead of being swallowed by the processing guard.
Deleting an episode fanned out one network playback-extras request per sibling row; the reference scan is now cache-only, retaining thumbnails when a sibling cannot be resolved. Season/show deletion removes rows sequentially, so that conservative retention would have counted siblings queued in the same batch - a sibling, or the container row whose extras cache is always a miss, made every episode retain its thumbnails and orphaned the files once the batch's rows were gone. The fan-out threads the batch's rating keys through so rows scheduled to disappear neither retain thumbnails nor contribute in-use paths; genuinely surviving rows still trigger retention.
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