check / check (push) Waiting to run
Each upstream host's semaphore now counts the fetches holding or waiting for one of its slots, and is removed from hostSems when the last of them gives its slot back or stops waiting, so a long-running pixad no longer keeps one semaphore per host it ever fetched from. VariantStorage.Delete removes the variant's .meta file too, a missing one not being an error; DeleteWithMeta, which eviction called for that, is gone. Model: opus-5-5