test(architecture): prove registry pkgviz on Eddy

[artiphishle]

Summary

Complete the final released-consumer proof for #8 by running Eddy through the npm-published pkgviz@0.8.3.

• resolve and verify pkgviz@0.8.3 from npm
• execute the real Eddy Java audit through bunx pkgviz@0.8.3
• keep the explicit hexagonal target separate from detection
• keep architecture/cycle evaluation advisory for the proof
• assert canonical SourceGraph retention, architecture candidates/evidence/contradictions/capabilities, explicit target evaluation, generic Rules output, and cycle-rule coexistence
• upload the registry-backed Audit artifact

Required skills

This repository currently has no AGENTS.md or .agents/skills/ instructions.

Closes #8
Refs ankhorage/atlas#262
Refs ankhorage/dependency-graph#24

[artiphishle]

Registry proof is prepared, but npm still does not expose pkgviz@0.8.3.

The proof has now retried the live registry lookup multiple times; the current failure is:

npm error 404 No match found for version 0.8.3
npm error 404 'pkgviz@0.8.3' is not in this registry.

No code assertion has failed yet; execution stops before the Eddy analysis because the released package cannot be resolved from npm. Keep this PR open until the registry exposes 0.8.3, then rerun the proof.