refactor(docs): rename Docusaurus site to Physical AI Toolchain (#224)

## Description

Renamed the Docusaurus documentation site to reflect the project's new
name, **Physical AI Toolchain**. Updated the site title, tagline,
navbar, homepage hero section, npm package name, and corresponding test
infrastructure. All changes were scoped to `docs/docusaurus/` with no
impact on root configuration, infrastructure, or deploy scripts.

## Type of Change

- [ ] 🐛 Bug fix (non-breaking change fixing an issue)
- [ ] ✨ New feature (non-breaking change adding functionality)
- [ ] 💥 Breaking change (fix or feature causing existing functionality
to change)
- [ ] 📚 Documentation update
- [ ] 🏗️ Infrastructure change (Terraform/IaC)
- [x] ♻️ Refactoring (no functional changes)

## Component(s) Affected

- [ ] `deploy/000-prerequisites` - Azure subscription setup
- [ ] `deploy/001-iac` - Terraform infrastructure
- [ ] `deploy/002-setup` - OSMO control plane / Helm
- [ ] `deploy/004-workflow` - Training workflows
- [ ] `src/training` - Python training scripts
- [x] `docs/` - Documentation

## Testing Performed

- [ ] Terraform `plan` reviewed (no unexpected changes)
- [ ] Terraform `apply` tested in dev environment
- [ ] Training scripts tested locally with Isaac Sim
- [ ] OSMO workflow submitted successfully
- [ ] Smoke tests passed (`smoke_test_azure.py`)

## Documentation Impact

- [x] No documentation changes needed
- [ ] Documentation updated in this PR
- [ ] Documentation issue filed

## Bug Fix Checklist

*N/A — this is a refactoring PR.*

- [ ] Linked to issue being fixed
- [ ] Regression test included, OR
- [ ] Justification for no regression test:

## Checklist

- [x] My code follows the [project conventions](copilot-instructions.md)
- [x] Commit messages follow [conventional commit
format](instructions/commit-message.instructions.md)
- [x] I have performed a self-review
- [x] Documentation impact assessed above
- [x] No new linting warnings introduced

Co-authored-by: Bill Berry <wbery@microsoft.com>

Author: WilliamBerryiii

docs/docusaurus/__tests__/__mocks__/@docusaurus/useDocusaurusContext.ts

@@ -1,8 +1,8 @@
 export default function useDocusaurusContext() {
   return {
     siteConfig: {
-      title: 'Azure NVIDIA Robotics Reference Architecture',
-      tagline: 'End-to-end reference architecture for cloud-to-edge robotics.',
+      title: 'Physical AI Toolchain',
+      tagline: 'Production-ready framework for training, deploying, and operating physical AI solutions on Azure with NVIDIA Isaac.',
       url: 'https://microsoft.github.io',
       baseUrl: '/physical-ai-toolchain/',
     },

docs/docusaurus/__tests__/homepage.test.tsx

@@ -5,7 +5,7 @@ import Home from '../src/pages/index';
 describe('Homepage', () => {
   it('renders the hero section', () => {
     render(<Home />);
-    expect(screen.getByText('Azure NVIDIA Robotics Reference Architecture')).toBeDefined();
+    expect(screen.getByText('Physical AI Toolchain')).toBeDefined();
   });
 
   it('renders the Explore the platform section', () => {

docs/docusaurus/docusaurus.config.js

@@ -3,8 +3,8 @@ const { themes: prismThemes } = require('prism-react-renderer');
 
 /** @type {import('@docusaurus/types').Config} */
 const config = {
-  title: 'Azure NVIDIA Robotics Reference Architecture',
-  tagline: 'End-to-end robotics simulation, training, and deployment on Azure',
+  title: 'Physical AI Toolchain',
+  tagline: 'Production-ready framework for training, deploying, and operating physical AI solutions on Azure with NVIDIA Isaac',
   favicon: 'img/microsoft-logo.svg',
 
   url: 'https://microsoft.github.io',
@@ -64,7 +64,7 @@ const config = {
     /** @type {import('@docusaurus/preset-classic').ThemeConfig} */
     ({
       navbar: {
-        title: 'Azure NVIDIA Robotics',
+        title: 'Physical AI Toolchain',
         logo: {
           alt: 'Microsoft',
           src: 'img/microsoft-logo.svg',

docs/docusaurus/package-lock.json

@@ -1,5 +1,5 @@
 {
-  "name": "azure-nvidia-robotics-docs",
+  "name": "physical-ai-toolchain-docs",
   "version": "0.0.0",
   "private": true,
   "scripts": {

docs/docusaurus/package.json

@@ -13,8 +13,8 @@ export default function Home(): React.ReactElement {
   return (
     <Layout>
       <HeroSection
-        title="Azure NVIDIA Robotics Reference Architecture"
-        subtitle="End-to-end reference architecture for training, deploying, and operating autonomous robots with Azure and NVIDIA Isaac."
+        title="Physical AI Toolchain"
+        subtitle="Production-ready framework for training, deploying, and operating physical AI solutions on Azure with NVIDIA Isaac."
       />
       <main>
         <section style={{ padding: '2rem 1.5rem' }}>