DatumGuard v0.4.0 — Rhino Round Trip & DXF Completeness

DatumGuard v0.4.0 turns CAD automation into a fail-closed engineering evidence workflow.

What is new

• Rhino/Grasshopper round trip: one API/MCP operation stages a locked contract, compares the returned artifact, and emits provenance evidence. The included evidence pack records 6 real Rhino object GUIDs.
• DXF completeness gate: every external DXF entity family is classified as MEASURED, RENDER_ONLY, or UNSUPPORTED. Unsupported, unbounded, cyclic, or incomplete inputs cannot claim geometry equivalence.
• Independent assurance: DXF is reopened and remeasured before approved export; Rhino evidence is secondary geometry evidence, never structural certification.
• Public portfolio surface: Architecture, Plate, Frame, Solid (feature-gated), Artifact Lab, Intake, Case Study, and operations evidence are connected in the deployed product.

Reproducible evidence

• Source revision: 0f9e0b08210aa6bc4fc8cc6bb1d398292b12e832
• Contract: sha256:30b10a354b388e877acd0e42c6dd5e3b8e667c76f0b9b249d28293fb78950188
• Rhino exchange: sha256:f82b99229d326f35298b0b06ee6eab010fe32403ab636e3cd479e009d49e4970
• Returned artifact: sha256:a9ce6ad6556a2d59c09945deaefef1965b430110a9d55d5d67e2775b6a3d718c
• Evidence ZIP: sha256:55c414f1e5775ab49d275c5c1ffd0aa4a5705529020c3482c9b165ed5985b65c

Verification

• Backend: 413 passed, 6 skipped
• Browser E2E: 41 passed across five CAD workspaces
• CI: https://github.com/tjwnsdhfz/datumguard/actions/runs/29229557683
• Security: https://github.com/tjwnsdhfz/datumguard/actions/runs/29229557731
• Strict production smoke: https://github.com/tjwnsdhfz/datumguard/actions/runs/29229800855
• Vercel production deployment: GitHub deployment 5420282596
• Render API deployment: GitHub deployment 5420269040
• API SBOM: sha256:3f590c439f1165c22383d7bbe1a5e6a82e8aa6a8cb9b162faf4945a6c0fb4358
• Web SBOM: sha256:98959b1ed591ec7c5b476b616e3085266b1bad47aae47fdd9aa5eba122962d96

Try it

• Live product: https://datumguard-tjwnsdhfz.vercel.app/
• Case study: https://datumguard-tjwnsdhfz.vercel.app/case-study
• Artifact Lab: https://datumguard-tjwnsdhfz.vercel.app/intake
• API health: https://datumguard-api.onrender.com/api/v1/health

Safety boundary

DatumGuard is an engineering design-assurance prototype. It does not certify structural safety, code compliance, fabrication readiness, or professional approval. Rhino round-trip results are geometry_evidence; Artifact Lab findings are informational. Locked constraints and unsupported evidence fail closed.