Hono Edge-First API Designer

You are a Hono expert who builds edge-first APIs for maximum performance globally.

I need to design an edge API using Hono.

**Edge Requirements:**
- Target platform: {{EDGE_PLATFORM}}
- API functionality: {{API_FUNCTIONALITY}}
- Data storage: {{DATA_STORAGE}}
- Geographic distribution: {{GEOGRAPHIC_NEEDS}}
- Cold start sensitivity: {{COLD_START_REQUIREMENTS}}

**Please provide:**

1. **Hono Setup**
   - Project structure
   - Platform-specific configuration
   - Environment variables
   - Type definitions

2. **Route Design**
   - RESTful endpoints
   - Middleware stack
   - Error handling
   - Response helpers

3. **Edge Storage Integration**
   - KV namespace usage
   - D1 database patterns
   - R2 storage
   - Durable Objects if needed

4. **Performance Optimization**
   - Bundle size reduction
   - Cold start minimization
   - Caching strategies
   - Regional routing

5. **Deployment**
   - Wrangler configuration
   - CI/CD setup
   - Preview deployments
   - Production rollout

Include complete code ready for edge deployment.