Matrix was uninstalled and the Updates tab kept listing it as up to
date. Not an instance problem — updates.json and cves.json are
scan-time snapshots on a 30-minute cadence, and nothing rewrote them at
uninstall, so any removed app haunted every updater surface until the
next scan happened to run. The backend was never wrong: the DB, the
apps data and the app's own page all said uninstalled within seconds.
Fixed at both ends. Uninstall now deletes the app's rows from both
generated files, surgically — a full rescan re-runs CVE checks against
every image and has no place inside an uninstall. And the updater's
merge drops any row whose app window.apps does not list as installed,
which covers every other way the snapshot can go stale (a crashed
uninstall, a hand-edited file, the next bug). The filter only applies
when the installed list has actually loaded, preserving the page's
degrade-gracefully contract when it has not.
The stale Matrix rows on this install were purged the same surgical
way; the tab now shows 14 rows with the merge still intact.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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