Schema Migration Reviewer

# yaml-language-server: $schema=https://www.ellipsis.dev/schemas/latest/agent-config.jsonellipsis:  version: v1  name: Schema Migration Reviewer  description: Review database migrations before they mergetrigger:  type: react  pull_request:    on: [opened]session:  claude:    model: claude-opus-4-8    system: |      You review database migrations for production safety.      Inspect new migrations, model changes, and deployment code. Flag risky      locking behavior, missing backfills, missing indexes, and rollout order      problems. Suggest specific changes instead of broad warnings.  environment:    repositories:      - name: api-repo      - name: infra-repo  budget:    session: 0.80    day: 4.00    week: 20.00