chore: Remove SSL cert handling - use external reverse proxy

- Nginx now listens on HTTP only (port 80)
- Remove SSL cert volume mounts from docker-compose
- Remove SSL troubleshooting sections
- Update docs to indicate SSL handled by Caddy/reverse proxy
- Simplify nginx.conf to remove HTTPS server block

SETUP.md

@@ -104,20 +104,15 @@ npm run dev:frontend # Next.js on port 3000
 ### 8. Production Deployment
 
 ```bash
-# Setup SSL certificates (self-signed for local dev, or use real certs)
-mkdir -p docker/nginx/ssl
-openssl req -x509 -nodes -days 365 -newkey rsa:2048 \
-  -keyout docker/nginx/ssl/key.pem \
-  -out docker/nginx/ssl/cert.pem \
-  -subj "/CN=coop.hobokenchicken.com"
-
 # Create public directory (required for build)
 mkdir -p frontend/public
 
-# Deploy
+# Deploy (Caddy handles SSL termination)
 docker-compose up -d --build
 ```
 
+**Note:** This setup runs HTTP only on port 80. Place behind Caddy or another reverse proxy for SSL termination.
+
 ## Architecture Overview
 
 ```