feat: Add Vercel deployment configuration for Pattern Server

Configured Pattern Server for serverless deployment on Vercel:

## Vercel Configuration
- vercel.json: Route mapping and build configuration
- api/index.ts: Serverless function adapter for Pattern Server
- api/tsconfig.json: TypeScript configuration for Vercel builds
- .vercelignore: Exclude test files and dev artifacts

## Deployment Features
- GET /health - Health check endpoint
- GET /api/v1/rules - List all patterns
- GET /api/v1/rules/:id - Get pattern by ID
- Zero-config deployment via GitHub integration
- Effect-based serverless functions with FetchHttpClient

## Documentation
- DEPLOYMENT.md: Complete deployment guide
- CLI and GitHub integration instructions
- Testing and monitoring guidelines

Ready to deploy: vercel --prod

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: PaulJPhilp

.vercelignore

@@ -0,0 +1,40 @@
+# Test files
+**/*.test.ts
+**/*.test.js
+*.test.ts
+*.test.js
+scripts/integration.test.ts
+scripts/ep-rules-add.test.ts
+server/server.test.ts
+
+# Documentation
+docs/
+*.md
+!README.md
+
+# Build artifacts
+.turbo
+dist/
+build/
+.next/
+out/
+
+# Development
+.vscode/
+.cursor/
+node_modules/
+
+# Backups
+content-backup-*/
+
+# Environment files
+.env.local
+.env.*.local
+
+# Logs
+*.log
+logs/
+
+# OS files
+.DS_Store
+Thumbs.db

DEPLOYMENT.md

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+# Deployment Guide
+
+## Vercel Deployment
+
+The Pattern Server is configured to deploy to Vercel as serverless functions.
+
+### Prerequisites
+
+1. Install Vercel CLI: `npm i -g vercel`
+2. Have a Vercel account at https://vercel.com
+
+### Deployment Steps
+
+#### Option 1: Deploy via Vercel CLI
+
+```bash
+# Login to Vercel
+vercel login
+
+# Deploy to production
+vercel --prod
+```
+
+#### Option 2: Deploy via GitHub Integration
+
+1. Go to https://vercel.com/new
+2. Import your GitHub repository
+3. Vercel will automatically detect the configuration
+4. Click "Deploy"
+
+### Configuration
+
+The deployment is configured via `vercel.json`:
+
+- **Build**: Uses `@vercel/node` to build TypeScript serverless functions
+- **Routes**: Maps all API routes to the serverless function handler
+- **Source**: All logic is in `api/index.ts`
+
+### API Endpoints
+
+Once deployed, your API will be available at:
+
+```
+https://your-project.vercel.app/health
+https://your-project.vercel.app/api/v1/rules
+https://your-project.vercel.app/api/v1/rules/:id
+```
+
+### Environment Variables
+
+No environment variables are currently required. All configuration is handled automatically.
+
+### Testing Deployment
+
+After deployment, test the endpoints:
+
+```bash
+# Health check
+curl https://your-project.vercel.app/health
+
+# List all rules
+curl https://your-project.vercel.app/api/v1/rules
+
+# Get specific rule
+curl https://your-project.vercel.app/api/v1/rules/use-effect-gen-for-business-logic
+```
+
+### Updating the Deployment
+
+Simply push changes to your main branch. If you have GitHub integration enabled, Vercel will automatically redeploy.
+
+For manual deployments:
+
+```bash
+# Deploy latest changes
+vercel --prod
+```
+
+### Rollback
+
+If you need to rollback to a previous deployment:
+
+1. Go to your project dashboard on Vercel
+2. Navigate to "Deployments"
+3. Find the previous working deployment
+4. Click "Promote to Production"
+
+### Monitoring
+
+View logs and analytics in the Vercel dashboard:
+- https://vercel.com/dashboard
+- Select your project
+- Go to "Deployments" or "Analytics"
+
+## Local Development
+
+To run the server locally:
+
+```bash
+# Start the development server
+bun run server:dev
+
+# Or run the standalone server
+bun run server/index.ts
+```
+
+The server will be available at http://localhost:3001
+
+## Testing
+
+Run the full test suite:
+
+```bash
+# All API tests
+bun run test:api
+
+# Individual test suites
+bun run test:server      # Server tests
+bun run test:cli         # CLI tests
+bun run test:e2e         # Integration tests
+```