Steve Yegge a891ebe79e Add snapshot versioning and timestamp validation (bd-2997) ...

- Add snapshotMetadata struct with version, timestamp, commit SHA
- Validate snapshots are <1 hour old, from compatible version
- Auto-cleanup stale snapshots from interrupted syncs
- All snapshot functions now write/validate metadata files
- Fixes issue where crash/kill -9 left stale snapshots

2025-11-06 19:36:13 -08:00

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bd

Add snapshot versioning and timestamp validation (bd-2997)

2025-11-06 19:36:13 -08:00