[ ] Supported runtime, operating system and hosting combination recorded
[ ] Reproducible build and dependency inventory
[ ] Business-critical characterization and contract tests
[ ] Explicit identity, session and authorization design
[ ] Compatible schema and data reconciliation plan
[ ] Reviewed infrastructure and secret handling
[ ] Observable jobs and idempotent integrations
[ ] Tested performance and accessibility
[ ] Cutover authority, stop criteria and rollback rehearsal
[ ] Legacy retirement and support ownership