Add professional README showcasing project, stack, and patterns

README.md

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+# Sam Pursuits
+
+**A personal pursuits portfolio — a React showcase of interests, projects, and the work outside the day job.**
+
+An interactive single-page application that presents personal pursuits — gardening, electronics, tinkering, and life projects — as a curated, editorial experience. Built to demonstrate front-end architecture, component design, and modern React patterns.
+
+## What it is
+
+A portfolio site that showcases what I build and explore beyond professional work. Each pursuit gets a dedicated page with rich content blocks, stats, and links, presented in a clean, motion-rich interface.
+
+## Tech stack
+
+| Layer | Technology |
+|-------|-----------|
+| Framework | React 19 |
+| Build | Vite 6 |
+| Styling | Tailwind CSS 4 (via `@tailwindcss/vite`) |
+| Animation | Motion 12 (framer-motion successor) |
+| Routing | React Router 7 |
+| Icons | lucide-react |
+| Language | TypeScript |
+
+## Architecture & design patterns
+
+- **Component-driven design** — small, focused components (`PursuitCard`, `PursuitHero`, `SectionCard`, `StatBadge`, `ExternalLinkCard`) composed into pages
+- **Data-driven content** — all content lives in typed data modules (`pursuitsData.ts`, `navItems.ts`), so adding a pursuit is pure data entry, no new components
+- **Reusable layout shell** — shared `Layout` + `PageHeader` provide consistent page chrome
+- **Reusable content blocks** — `ContentBlocks` renders heterogeneous content (prose, stats, media, links) from structured data
+- **Horizontal tabs** — `HorizontalTabs` for sub-navigation within a page
+- **AI chat box** — embedded assistant interface (`AiChatBox`) for interactive engagement
+- **Fade/slide animation patterns** — motion variants (`hidden` → `show` with staggered children) for consistent page transitions
+- **Route-based pages** — React Router for multi-page feel within an SPA
+
+## Pages
+
+| Route | Purpose |
+|-------|---------|
+| `/` | Home — hero + pursuit index |
+| `/interests` | Interest areas overview |
+| `/pursuits/:id` | Individual pursuit deep-dive |
+| `/ai-chat` | Interactive AI assistant |
+| `/contact` | Contact + links |
+
+## Standards
+
+- TypeScript strict mode
+- Semantic HTML with accessible landmarks
+- Tailwind utility-first styling with design tokens
+- Fully responsive (mobile → desktop)
+- Performance-minded (Vite code-splitting, no heavy dependencies)
+
+## Getting started
+
+```bash
+npm install
+npm run dev      # development server
+npm run build    # production build
+npm run preview  # preview production build
+```
+
+## Structure
+
+```
+src/
+├── components/    # Reusable UI components
+│   ├── Layout.tsx / PageHeader.tsx / SectionCard.tsx
+│   ├── PursuitCard.tsx / PursuitHero.tsx / StatBadge.tsx
+│   ├── ContentBlocks.tsx / HorizontalTabs.tsx / ExternalLinkCard.tsx
+│   └── AiChatBox.tsx
+├── data/          # Typed content (pursuitsData.ts, navItems.ts)
+├── pages/         # Route components (Home, Interests, PursuitPage, AiChat, Contact)
+├── App.tsx        # Router + app shell
+└── main.tsx       # Entry point
+```
+
+---
+
+*One of several portfolio sites in the Sam Rolfe showcase family — see [sam-developer](https://gitea.lab.audasmedia.com.au/sam/sam-developer), [sam-devops](https://gitea.lab.audasmedia.com.au/sam/sam-devops), and [sam-iot-electronics](https://gitea.lab.audasmedia.com.au/sam/sam-iot-electronics).*