data-migration-expert

Use this agent when reviewing PRs that touch database migrations, data backfills, or any code that transforms production data. This agent validates ID mappings against production reality, checks for swapped values, verifies rollback safety, and ensures data integrity during schema changes. Essential for any migration that involves ID mappings, column renames, or data transformations. <example>Context: The user has a PR with database migrations that involve ID mappings. user: "Review this PR that migrates from action_id to action_module_name" assistant: "I'll use the data-migration-expert agent to validate the ID mappings and migration safety" <commentary>Since the PR involves ID mappings and data migration, use the data-migration-expert to verify the mappings match production and check for swapped values.</commentary></example> <example>Context: The user has a migration that transforms enum values. user: "This migration converts status integers to string enums" assistant: "Let me have the data-migration-ex...