# AEG-X-009 Dataset Freeze Contract Rehearsal

## Traceability

- WBS: `AEG-X-009`
- ADR: `ADR-DATA-001` / `DEC-101`
- Migration: `db/migrations/0034_dataset_manifest_freeze_contract.sql`
- Target: isolated `kartsell_migration_test`
- Production `kartselldb`: not modified

## Actual execution evidence

```text
DbMigrator upgrade: 0034_dataset_manifest_freeze_contract.sql executed, exit code 0
DbMigrator re-run: No new scripts need to be executed, exit code 0
Journal: 0034_dataset_manifest_freeze_contract.sql present
Status constraint: PROPOSED, APPROVED, FROZEN, QUARANTINED, RETIRED
Frozen approval constraint: FROZEN requires approved_by, approved_at, frozen_at
Append-only trigger: dataset_manifest_no_update present
```

## Boundary

This rehearsal validates schema and migration behavior only. No dataset row was seeded, no source was authorized, no VersionSet was resolved, and no model evaluation or Shadow Run was started.