feat: add production configuration with environment variables

- Add .env file for production deployment with reverse proxy
- Add docker-compose.prod.yml for production profile
- Add docker-compose.override.yml for local development
- Update docker-compose.yml with all configurable variables
- Update frontend to use VITE_* environment variables
- Update backend to support CORS_ORIGINS and WEBHOOK_BASE_URL
- Add vite.config.ts allowedHosts for reverse proxy
- Add documentation for docker-compose and reverse proxy setup

All URLs are now configurable via environment variables:
- VITE_API_URL: Backend API endpoint
- VITE_WEBHOOK_BASE_URL: Webhook base URL
- VITE_INSTALL_SCRIPT_URL: Install script URL
- VITE_APP_URL: Frontend URL
- CORS_ORIGINS: Allowed CORS origins
- WEBHOOK_BASE_URL: Backend webhook base URL

.env.example

@@ -1,22 +1,64 @@
 # LogWhispererAI - Environment Variables
 
+# ============================================
+# FRONTEND CONFIGURATION (VITE_* variables)
+# These are exposed to the browser
+# ============================================
+
+# Backend API URL - where the frontend will make API calls
+# Example: https://srv-logwhispererai.lab.home.lucasacchi.net
+VITE_API_URL=http://localhost:3001
+
+# Webhook base URL - used for displaying webhook URLs to users
+# Example: https://logwhispererai.lab.home.lucasacchi.net/webhook
+VITE_WEBHOOK_BASE_URL=http://localhost:3001/webhook
+
+# Install script URL - the curl command shown to users
+# Example: https://logwhispererai.lab.home.lucasacchi.net/install.sh
+VITE_INSTALL_SCRIPT_URL=http://localhost:3001/install.sh
+
+# Application identification
+VITE_APP_NAME=LogWhispererAI
+VITE_APP_URL=http://localhost:5173
+
+# ============================================
+# BACKEND CONFIGURATION
+# ============================================
+
+# CORS Origins - comma-separated list of allowed frontend origins
+# Use '*' for development, set specific domains for production
+# Example: https://logwhispererai.lab.home.lucasacchi.net
+CORS_ORIGINS=*
+
+# Webhook base URL - used for generating webhook URLs
+# Example: https://logwhispererai.lab.home.lucasacchi.net/webhook
+WEBHOOK_BASE_URL=https://logwhisperer.ai/webhook
+
+# API delay simulation (milliseconds)
+DELAY_MS=1500
+
+# Node environment
+NODE_ENV=development
+
+# ============================================
+# OPTIONAL: Third-party Services
+# ============================================
+
 # Telegram Bot Configuration
-# Ottieni questi valori seguendo le istruzioni in docs/telegram_setup.md
-TELEGRAM_BOT_TOKEN=your_bot_token_here
-TELEGRAM_CHAT_ID=your_chat_id_here
+# TELEGRAM_BOT_TOKEN=your_bot_token_here
+# TELEGRAM_CHAT_ID=your_chat_id_here
 
 # n8n Configuration
-N8N_WEBHOOK_URL=https://your-n8n-instance.com/webhook/logwhisperer
+# N8N_WEBHOOK_URL=https://your-n8n-instance.com/webhook/logwhisperer
 
 # AI Provider Configuration
-OPENAI_API_KEY=your_openai_api_key_here
-# oppure
-ANTHROPIC_API_KEY=your_anthropic_api_key_here
+# OPENAI_API_KEY=your_openai_api_key_here
+# ANTHROPIC_API_KEY=your_anthropic_api_key_here
 
 # Supabase Configuration (per autenticazione e database)
-SUPABASE_URL=https://your-project.supabase.co
-SUPABASE_ANON_KEY=your_anon_key_here
+# SUPABASE_URL=https://your-project.supabase.co
+# SUPABASE_ANON_KEY=your_anon_key_here
 
 # Stripe Configuration (per pagamenti)
-STRIPE_SECRET_KEY=sk_test_your_key_here
-STRIPE_WEBHOOK_SECRET=whsec_your_webhook_secret_here
+# STRIPE_SECRET_KEY=sk_test_your_key_here
+# STRIPE_WEBHOOK_SECRET=whsec_your_webhook_secret_here