sneak
e0539a8601
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imgcache.FileStore is a directory of files named by a hex key, at <ab>/<cd>/<key>. It writes a file under a temp name, syncs it and renames it into place. It opens, reports the size of and deletes the file for a key. The cache keeps its sources in one FileStore and its variants in another, so ContentStorage and VariantStorage are gone. FileStore has no Exists: the reconciliation pass checks a variant's file with Size, and the tests look for the file on disk. Cache.Variant reads the content type from the file's first bytes itself. storage.go is now filestore.go, and the unused testdata/red.avif is gone. Model: opus-5-5