Migration Planner Skill Plans safe schema, API, or dependency migrations with rollback strategies. Steps 1. Identify what's changing (schema, API version, dependency) 2. Use to find all affected code 3. Use to map the dependency tree 4. Generate migration plan with: - Pre-migration checklist - Step-by-step migration sequence - Rollback procedure for each step - Verification queries/tests 5. Apply playbook from ---