root 29347fc8a6 Add snapshot-based LVM migration scripts ...

- snapshot_migrate_to_internal.sh: Complete snapshot-based migration from external M.2 to internal NVMe
- preview_snapshot_migration.sh: Preview script showing snapshot migration process
- migrate_lvm_to_internal.sh: Alternative rsync-based migration script
- preview_migration.sh: Preview for rsync-based migration

Key features:
- LVM snapshot creation of ALL logical volumes (root, home, boot, swap)
- Block-level dd copying for exact system clone
- Automatic LVM structure setup on internal drive
- GRUB/EFI boot configuration
- Future snapshot management tools
- Space-efficient one-at-a-time processing

Migration preserves complete live system state with bit-perfect accuracy.

2025-09-30 17:35:22 +02:00

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