R-615: a changed git.repo_url was inert (the clone's stored origin was fetched for ever). The sync
now compares the configured URL with the clone's origin: another repository -> drop the cache and
clone it; the same repository with new credentials -> set-url.
R-607: a catalog move that changed no stack directory (a deployed, pinned app keeps its stored
definition) skipped the rescan, so CatalogImages and the update badge stayed stale, and the sync
said 'nincs változás'. The sync now notes the cache commit before and after, rescans when it moved,
says so, and returns catalog_moved.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS
