* chore: Adds a users.uuid column * Add uuid backfill * Remove backfill due to possible locking issues * feat: Add batched UUID backfill to prevent database locking Implements a batched approach for backfilling UUIDs on existing users: - Processes 1000 rows at a time to avoid table locks - Uses FOR UPDATE SKIP LOCKED to prevent blocking other transactions - Includes small delays between batches (10ms) to allow other operations - Logs progress every 10,000 rows for monitoring This approach is safe for production databases with millions of users. Co-Authored-By: alex@cal.com <me@alexvanandel.com> --------- Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com> Co-authored-by: sean-brydon <55134778+sean-brydon@users.noreply.github.com>