Fix Beta 2 registry consumer type verification

[douglas-grishen]

What changed

• replace two stale, non-exported Beta 2 consumer type names with the actual public contracts
• keep the release consumer checking the same action-guard and governed Mesh integration surfaces

Root cause

The release fixture referenced provisional type names that were renamed before the packages were frozen. Package publication completed, but the clean pnpm consumer failed during TypeScript verification.

Impact

The release workflow can now validate the already-published immutable 0.3.0-beta.2 packages without changing package contents or registry artifacts.

Validation

• 17/17 focused publisher and registry-consumer tests
• clean pnpm portable registry consumer: 36 packages, 58 export subpaths
• clean npm portable registry consumer: 36 packages, 58 export subpaths
• clean pnpm PostgreSQL registry consumer: 14/14 control conformance cases
• Prettier and git diff --check