Heltec V4 timing measured 2.19 seconds for recovery checks, temporary-file cleanup, open and buffer configuration combined in one lazy-save pass. Defer those startup operations across guarded companion loops while explicit durability callers still initialize synchronously.
Track ownership only after attempting to create the temporary file, preserve unowned stale files on early cancellation, and reject premature writes or commits. Cover startup faults, interruption, mutation, cache pressure and synchronous-construction negative controls with native sanitizer tests.
mikecarper
0a3187ac30