Add AGENT.md with project guidelines for AI agents

AGENT.md

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+# AGENT.md
+
+Instructions and guidelines for AI agents working in this repository.
+
+## Project Overview
+
+This is a full-stack Tea Store e-commerce application built as a workshop environment for demonstrating Claude Code and Atlassian JIRA integration.
+
+- **Backend**: Python 3.12 + FastAPI (port 8765)
+- **Frontend**: React 19 + TypeScript + Vite 7 + Tailwind CSS 4 (port 4321)
+- **E2E Testing**: Playwright
+- **MCP Integration**: Atlassian Rovo for Jira/Confluence
+
+## Project Structure
+
+```
+├── backend/                    # FastAPI Python backend
+│   ├── app/
+│   │   ├── api/routes.py       # API endpoints
+│   │   ├── main.py             # FastAPI app with CORS
+│   │   ├── models.py           # Pydantic models
+│   │   ├── mock_data.py        # Product data store (15 teas)
+│   │   └── customization_config.py
+│   ├── tests/                  # Pytest tests
+│   ├── main.py                 # Uvicorn entry point
+│   └── requirements.txt
+│
+├── frontend/                   # React frontend
+│   ├── src/
+│   │   ├── app/
+│   │   │   ├── features/       # Feature components (customization wizard, etc.)
+│   │   │   ├── shared/         # Reusable components (ProductCard, CartSidebar, etc.)
+│   │   │   └── context/        # React Context providers (Cart, Wishlist, Theme, Notification)
+│   │   ├── services/           # API service layer
+│   │   └── types/              # TypeScript type definitions
+│   ├── package.json
+│   └── vite.config.ts
+│
+├── e2e/                        # Playwright E2E tests
+├── .claude/skills/             # Claude Code skills
+├── test.js                     # Cross-platform unified test runner
+├── start.sh / start.bat        # Orchestration scripts
+└── playwright.config.ts
+```
+
+## Running the Application
+
+```bash
+# Quick start (installs deps + starts both services)
+./start.sh          # macOS/Linux
+start.bat           # Windows
+
+# Manual start
+# Backend
+cd backend && source venv/bin/activate && python main.py
+
+# Frontend (separate terminal)
+cd frontend && npm run dev
+```
+
+- Frontend: http://localhost:4321
+- Backend API: http://localhost:8765
+- API Docs (Swagger): http://localhost:8765/docs
+
+## Linting
+
+```bash
+# Backend
+cd backend && source venv/bin/activate && flake8 app/ --max-line-length=120
+
+# Frontend
+cd frontend && npx tsc -b
+```
+
+## Testing
+
+```bash
+# All unit tests (backend + frontend)
+node test.js
+
+# Including E2E
+node test.js --e2e
+
+# Backend only
+cd backend && source venv/bin/activate && pytest -v
+
+# Frontend only
+cd frontend && npm run test
+
+# E2E only
+npx playwright test
+```
+
+## API Endpoints
+
+| Method | Endpoint                                | Description                      |
+|--------|-----------------------------------------|----------------------------------|
+| GET    | `/api/products`                         | All products (supports filtering)|
+| GET    | `/api/products/{id}`                    | Product by ID                    |
+| GET    | `/api/products/category/{category}`     | Products by category             |
+| GET    | `/api/customization-config/{category}`  | Customization options for a category |
+
+### Query Parameters for `/api/products`
+
+- `category` - Filter by category (green, black, oolong, herbal)
+- `price_max` - Maximum price filter
+- `material` - Filter by origin (China, Japan, India, Taiwan)
+
+## Code Conventions
+
+### Backend (Python)
+- Use **Pydantic** models for all data validation (`backend/app/models.py`)
+- Max line length: **120 characters** (flake8)
+- Tests go in `backend/tests/`
+- Mock data is in `backend/app/mock_data.py` (no database)
+
+### Frontend (TypeScript/React)
+- **TypeScript strict mode** is enabled
+- Prefer `const` over `let`
+- State management via **React Context** (Cart, Wishlist, Theme, Notification)
+- Cart and Wishlist persist to **localStorage**
+- Feature components live in `frontend/src/app/features/`
+- Shared/reusable components live in `frontend/src/app/shared/`
+- Frontend proxies `/api` requests to the backend during development
+
+## Key Domain Terms
+
+- **Customization Wizard**: Multi-step UI flow for modifying tea attributes before adding to cart
+- **Tea Category**: Green, Black, Oolong, or Herbal - determines available customization options
+- **Material**: Refers to the tea's country of origin (China, Japan, India, Taiwan)
+- **Price Modifier**: Value added to base price based on customization selections
+- **Customization Config**: Dynamic schema from the API defining options and validation rules per category
+
+## Important Notes
+
+- There is no database; product data is served from an in-memory mock data store (`PRODUCTS` list in `mock_data.py`)
+- CORS is configured for `localhost:4321`
+- The `test.js` script handles cross-platform differences for running both Python and JavaScript tests
+- Playwright browsers are installed via `postinstall`; if missing, run `npx playwright install chromium`