Migration: v0 → v1

Lumyn v1 is the current stable contract. v0 is legacy/deprecated.

Major Changes

• Verdicts: TRUST removed (use ALLOW). QUERY removed (use DENY or ABSTAIN depending on intent).
• Digests: inputs_digest calculation changed to be more robust.
• Strictness: policy.v1 validation fails if you use unknown keys.

Migration Guide

1. Migrate Policy

Run the automated migration tool:

lumyn migrate policies/my-legacy.v0.yml --out policies/my-policy.v1.yml

This will:

• Rename actions/verdicts (TRUST -> ALLOW).
• Check for unsupported keys.
• Update schema version.

2. Update Application Code

Change your JSON request generation:

• Set schema_version to decision_request.v1.
• Update your verdict handling logic (if verdict == "ALLOW": ...).

3. Verify

Run lumyn policy validate --workspace . to ensure the new policy is strictly valid.