Finding UUID Migration Phase 5: Drop old uuid column and rename new_uuid

Problem

After GitLab has fully transitioned to using new_uuid, we can clean up by dropping the old uuid column and renaming new_uuid to uuid.

Implementation

  1. Verify all code paths are using new_uuid (Phase 4 complete)
  2. Drop the old uuid column from vulnerability_occurrences
  3. Rename new_uuid column to uuid
  4. Update any remaining references in code
  5. Clean up feature flags from Phase 4

Acceptance Criteria

  • Old uuid column dropped
  • new_uuid renamed to uuid
  • All code references updated
  • Feature flags cleaned up
  • No regressions

Dependencies

  • Blocked by Phase 4 (transition must be complete and stable)

Related

  • Part of Finding UUID migration series
  • #587625 (closed) - Phase 1: Start populating new_uuid