planifest Schema Evolution Governance
Overview
Use this skill to evolve shared schemas without breaking producers, consumers, or historical data integrity.
Scope Boundaries
- Use this skill when the task matches the trigger condition described in
description. - Do not use this skill when the primary task falls outside this skill's domain.
Shared References
- Compatibility window rules:
references/compatibility-window-rules.md
Templates And Assets
- Schema change plan template:
assets/schema-change-plan-template.md
- Schema compatibility checklist:
assets/schema-compatibility-checklist.md
Inputs To Gather
- Current schema and migration history.
- Producer/consumer dependency map.
- Data volume, retention, and rollback constraints.
- Release window and coordination limits.
Deliverables
- Compatibility-aware schema change plan.
- Phased migration sequence with checkpoints.
- Rollback and data-recovery readiness criteria.
Workflow
- Define change impact in
assets/schema-change-plan-template.md. - Apply compatibility rules from
references/compatibility-window-rules.md. - Validate consumer migration sequence and cutover plan.
- Verify rollback/data integrity with
assets/schema-compatibility-checklist.md. - Publish execution ownership and residual risk log.
Quality Standard
- Compatibility impact is explicit and testable.
- Migration and rollback paths are both validated.
- Consumer coordination is planned before destructive changes.
Failure Conditions
- Stop when forward/backward compatibility is unverified.
- Stop when rollback or data recovery path is missing.
- Escalate when migration risk exceeds governance policy.