feat: add snapshot-based backup before destructive database migrations

[lauferuqquyah]

📌 Summary

Adds an automated database snapshot mechanism before running destructive migrations to prevent data loss and ensure quick recovery if a migration fails.

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🔍 What Changed?

• Added a pre-migration check/step to automatically capture a database snapshot before applying schema changes.
• Ensured the migration process halts if the snapshot creation fails.

🧪 How to Test

1. Run the migration script locally/in staging.
2. Verify that a snapshot is created successfully before schema updates are applied.
3. Verify that migrations proceed normally after a successful snapshot.