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The Google Drive backend held a 128-entry static folder-id cache, each entry a full path buffer - 295 kilobytes of load-resident state on platforms without demand paging, for a backend most sessions never configure. The cache now allocates on the first insert and lookups treat an absent cache as a miss; it lives for the session once syncing has run, exactly the lifetime the static had. All eleven touch sites sit in the two cache functions, audited.