03e6617f38
Stage C of the three-stage backup-hardening plan (Stage A: inline
DB dump + fail-loud landed in 7fdf01a; Stage B: config-driven walker
in 302fc6b). Answers the "what would I lose if I clicked Run Backup
Now right now?" question that Stage B made possible to answer.
Backend:
- new backupCoverageService.js: per-path coverage classification,
drift detection (top-level subdirs not in backup_paths and not
in the backups/tmp allow-list), DB-dump mode + staleness block
- new GET /api/admin/system-health/backup-coverage route, same
auth + settings.view permission as /backup-integrity
- 7 integration scenarios pinning the classifier behaviour
Frontend:
- new BackupCoverageCard with auto-fetch (cheap; no recursion)
- new Coverage tab on BackupManagement next to Integrity
- en + de i18n; other locales fall back to en keys until a native
speaker reviews
Verification:
- 26/26 backup integration tests pass (Stage A 5 + Stage B 7 +
Stage C 7 + adminBackupIntegrity 4 + businessDocs 3)
- frontend build clean
- 4 pre-existing integration failures confirmed unrelated