"Snapshot" is restic's term and leaks the tool's vocabulary into the
WebUI. Users think in "backups" — the on-page label even says "Backups"
already; only the secondary copy still said "snapshot". Renames the
remaining user-visible mentions while leaving code identifiers, API
keys, data attributes, CSS class names, and the ?snapshot= deep-link
param untouched (those are internal contracts and changing them would
churn for no user-visible win).
Renamed surfaces:
- Per-app Backups tab header:
"Snapshots for <app>" → "Backups for <app>"
"across all configured repositories" → "across all configured locations"
- BackupAppCard:
"No snapshots yet" → "No backups yet"
"No snapshots found" → "No backups found"
"Showing the most recent 50 of N snapshots" → "...of N backups"
ID-chip tooltip "Snapshot ID" → "Backup ID"
Detail panel "Snapshot ID:" → "Backup ID:"
- Backup retention preset descriptions (KEEP_LAST/DAILY/WEEKLY/MONTHLY/
YEARLY) — "snapshot per day/week/..." → "backup per day/week/..."
- Personal preset hint: "6 monthly snapshots" → "6 monthly backups"
- Restore confirmation modal hint: "snapshot restored in place" →
"backup restored in place"
- Config-warning banner copy adjusted so it doesn't introduce
"snapshots" as a noun
- Retention "Keep last" input suffix: "snapshots" → "backups"
- Cross-host migrate tooltip: "snapshot" → "backup"
Signed-off-by: librelad <librelad@digitalangels.vip>
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