Four files under src had no production importer:
- the keyset measurement reader for backups: both backup writers moved
to the shared account copy and the streamed full backup, and its
header still claimed both used it;
- the HOMA-IR calculator and the mood stability label, never wired to a
surface;
- the backup verdict helper, which only the backup classification guard
called. It now lives in that guard.
The queue expiry table is what the job queue guards check the registry
against and nothing in the worker reads it, so it moves to the test
helpers. The version-stamp baseline drops the deleted files.