Add VPS production deployment with nginx-proxy-manager support

This commit adds comprehensive support for deploying the GeoGuessr MCP Server
to a VPS alongside existing nginx-proxy-manager setup (e.g., Firefly III).

Changes:
- Updated docker-compose.prod.yml to use existing firefly_network
- Removed standalone nginx service (uses nginx-proxy-manager instead)
- Changed from ports to expose for internal-only access
- Switched default to pre-built Docker Hub images

New files:
- DEPLOYMENT.md: Comprehensive deployment guide with SSL setup
- .env.production: Production-ready environment configuration template
- deploy.sh: Automated deployment script with health checks

Updated files:
- README.md: Added quick reference to VPS deployment with nginx-proxy-manager
- docker-compose.prod.yml: Simplified for proxy manager integration

Deployment features:
- Automatic SSL certificate management via nginx-proxy-manager
- Let's Encrypt integration for HTTPS
- Shared Docker network with existing services
- Persistent schema storage
- Health checks and logging
- Easy updates via deploy script

This setup allows users to deploy the MCP server on the same VPS as other
Docker services while using a single nginx-proxy-manager for SSL/HTTPS.

.env.production

@@ -0,0 +1,90 @@
+# GeoGuessr MCP Server - Production Configuration
+# This file is for VPS deployment with nginx-proxy-manager and SSL
+
+# =============================================================================
+# Docker Image Configuration (REQUIRED for production)
+# =============================================================================
+# Your Docker Hub username - MUST match your pushed image
+DOCKER_USERNAME=yourusername
+
+# Docker image tag to use
+# Options: latest, v1.0.0, v1.1.0, etc.
+IMAGE_TAG=latest
+
+# =============================================================================
+# GeoGuessr Authentication (REQUIRED for most features)
+# =============================================================================
+# Your GeoGuessr _ncfa cookie for API authentication
+#
+# How to get your _ncfa cookie:
+# 1. Log in to GeoGuessr in your browser
+# 2. Open Developer Tools (F12 or Ctrl+Shift+I)
+# 3. Go to the "Application" or "Storage" tab
+# 4. Under "Cookies", find www.geoguessr.com
+# 5. Look for the cookie named "_ncfa"
+# 6. Copy its value and paste it below
+#
+# SECURITY WARNING: Keep this secret! Never commit to git.
+# Anyone with this cookie can access your GeoGuessr account.
+
+GEOGUESSR_NCFA_COOKIE=your_actual_ncfa_cookie_value_here
+
+# =============================================================================
+# MCP Server Configuration
+# =============================================================================
+# Transport protocol - keep as streamable-http for production
+MCP_TRANSPORT=streamable-http
+
+# Host - keep as 0.0.0.0 to accept connections from nginx-proxy-manager
+MCP_HOST=0.0.0.0
+
+# Port - internal port, not exposed to internet (nginx-proxy-manager handles external)
+MCP_PORT=8000
+
+# =============================================================================
+# API Monitoring Configuration (RECOMMENDED for production)
+# =============================================================================
+# Enable automatic API endpoint monitoring to detect schema changes
+MONITORING_ENABLED=true
+
+# Check endpoints every 24 hours
+MONITORING_INTERVAL_HOURS=24
+
+# Directory to store schema cache (persisted in Docker volume)
+SCHEMA_CACHE_DIR=/app/data/schemas
+
+# =============================================================================
+# Logging Configuration
+# =============================================================================
+# Log level for production
+# Options: DEBUG (verbose), INFO (recommended), WARNING, ERROR, CRITICAL
+LOG_LEVEL=INFO
+
+# For troubleshooting, temporarily set to DEBUG:
+# LOG_LEVEL=DEBUG
+
+# =============================================================================
+# Request Configuration
+# =============================================================================
+# Request timeout in seconds (increase if API is slow)
+REQUEST_TIMEOUT=30.0
+
+# Maximum retry attempts for failed requests
+MAX_RETRIES=3
+
+# =============================================================================
+# Production Notes
+# =============================================================================
+# - This container is accessed through nginx-proxy-manager (firefly_network)
+# - SSL/HTTPS is handled by nginx-proxy-manager
+# - Port 8000 is NOT exposed to the internet
+# - Logs are available via: docker compose -f docker-compose.prod.yml logs -f
+# - Schema cache is persisted in volume: geoguessr-mcp-schemas-prod
+#
+# Deployment steps:
+# 1. Update DOCKER_USERNAME above
+# 2. Update GEOGUESSR_NCFA_COOKIE with your actual cookie
+# 3. Transfer this file to VPS as .env
+# 4. Run: docker compose -f docker-compose.prod.yml up -d
+# 5. Configure proxy host in nginx-proxy-manager (port 81)
+# 6. See DEPLOYMENT.md for detailed instructions