load_state now drops any stored available_update whenever the running
binary version differs from what's on disk — the old migration only
cleared it when the stale entry happened to match the new version, so
skipping releases (e.g. sideloading 1.7.16 → 1.7.18 without 1.7.17)
left a pointer to an intermediate version as the "update available",
which the UI then offered as a downgrade prompt.
check_for_updates also uses a numeric version comparator so a stale or
cached manifest with an older version can't offer itself as an
update, and 1.7.10 correctly outranks 1.7.9 past the single-digit
patch boundary.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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