Colony.apiaryId is a plain FK, never checked against the apiary's own
status. Without a guard, deactivating an apiary silently orphaned any
colonies still living there: they kept showing as ACTIVE, but their
apiary had disappeared from every "active apiaries" list, dashboard
count, and colony-creation picker - a confusing half-state with no
warning at all.
ApiariesService.deactivate() now throws ConflictException when active
colonies remain, so the beekeeper has to move or dissolve them first -
matching the same assertActive-style guard pattern already used
elsewhere (colonies, e.g. move()/merge()/split()).
Co-Authored-By: Claude Sonnet 5 <[email protected]>
