Major enhancements to backup monitoring accuracy and user experience:
## Core Fixes
- **Fix timestamp precision loss**: PVE/PBS age filtering now shows correct times (17h vs incorrect 36h)
- **Server-side deduplication**: Shared storage backups no longer counted multiple times
- **Client-side deduplication**: Calendar drill-down shows each guest only once per date
- **Clean UI**: Removed redundant backup count numbers when type badges are shown
## Technical Implementation
- Added `latestTimes` object with type-specific timestamps to guest data structure
- Implemented `deduplicateStorageBackups()` function using volid-based deduplication
- Enhanced calendar-heatmap processing to merge duplicate guest entries by vmid
- Updated backup detail card to use direct timestamp lookup instead of date aggregation
## Files Modified
- `server/dataFetcher.js`: Added shared storage deduplication logic
- `src/public/js/ui/backups.js`: Enhanced guest data with type-specific latest times
- `src/public/js/ui/backup-detail-card.js`: Fixed age calculation and removed redundant counts
- `src/public/js/ui/calendar-heatmap.js`: Implemented client-side guest deduplication
- `docs/BACKUP_ARCHITECTURE.md`: Documented pragmatic solution approach
## Result
- Accurate backup ages when filtering by PVE/PBS/Snapshots
- No more duplicate counting from shared storage (NFS, Ceph, etc.)
- Clean calendar view with single guest entries per date
- Foundation for future backup system enhancements
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
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