feat: launch 3d architecture documentation portal

glossary/project-language.md

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+---
+title: "Project Language"
+description: "Apply product-specific language consistently."
+---
+
+# Project language
+
+Use **3D Architecture Wizzard** for the project name and preserve its intentional spelling. Use **3darch** for repository, namespace, and concise technical references.
+
+Use **element** for a selectable architecture object and **relationship** for a modeled connection between elements.

glossary/terms.md

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+---
+title: "Terms"
+description: "Use the shared terms that anchor project communication."
+slug: /
+---
+
+# Terms
+
+| Term | Meaning |
+|---|---|
+| **3darch** | Short project code for 3D Architecture Wizzard. |
+| **Architecture model** | Structured representation of architecture elements and relationships. |
+| **Browser POC** | Initial proof of concept delivered in a web browser. |
+| **Navigable 3D** | A spatial view that supports camera movement and element inspection. |