Add Three.js Sculpt DNA plugin

[hyeonsangjeon]

Summary

• Add threejs-sculpt-dna v0.5.1 as an external plugin for verifiable modular procedural Three.js reconstruction and coverage-curated deterministic asset families.
• Document the plugin in the External Plugins section and link its public live demos.
• Reference the public source repository root plugin.json, so the GitHub marketplace source intentionally has no path.

Plugin details

• Release: v0.5.1
• Immutable release commit: 269963bd61763aef023f8457f7c3a7018e6b5b8d
• License: MIT
• Included skills: object-to-threejs-procedural, sculpt-dna-variants

Reviewer evidence

• Public Quality run: 274 tests, generated TypeScript parsing, four locked browser builds, capture checks, and dependency audits passed.
• Exact @microsoft/vally@0.6.0 validation passes 3/3 for both bundled skills; all 10 object-skill reference documents are directly reachable with zero orphan references.
• Verified capability matrix and machine-readable proof: eight claims bound to 56 repository-local evidence files.
• Security policy and script policy: all 40 Python executables are inventoried, purpose-scoped, and declare network access disabled.
• The read-only first-clone doctor and an isolated Copilot marketplace install were verified; the installed plugin exposed exactly the two declared skills.
• GitHub Pages deployment passed for the immutable release commit.

[Copilot]

Pull request overview

Adds the external Three.js Sculpt DNA plugin to the marketplace.

Changes:

• Registers v0.4.2 from its root manifest.
• Documents the plugin and links its live demo.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
.github/plugin/marketplace.json	Adds plugin metadata and external source.
README.md	Lists the plugin under External Plugins.

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[hyeonsangjeon]

Updated this submission to the published v0.5.0 in commit c1227d7. The catalog entry now matches the released plugin metadata.

For review, the release is pinned to immutable source commit bb2de218, and the public Quality run passed the 273-test contract surface, four browser builds, capture checks, and dependency audits. The read-only doctor, complete network-disabled script inventory, and machine-readable capability proof are linked in the updated PR body.

[hyeonsangjeon]

Updated this submission to the immutable v0.5.1 release. The patch addresses external marketplace compatibility directly: exact @microsoft/vally@0.6.0 validation now passes 3/3 for both skills, all 10 reference documents are reachable with zero orphans, and a repository regression test locks that routing in. Main Quality (274 tests) and Pages deployment are green at 269963bd61763aef023f8457f7c3a7018e6b5b8d.