Initial commit: Gold Trading Simulator with AI-powered analysis

backend/.env.example

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+# Database
+DATABASE_URL=postgresql://postgres:postgres@localhost:5432/gold_trading_db
+
+# API Keys (Required)
+ALPHA_VANTAGE_API_KEY=your_alpha_vantage_key_here
+OPENROUTER_API_KEY=your_openrouter_key_here
+
+# Optional News API Keys (for enhanced news coverage)
+FINNHUB_API_KEY=
+NEWS_API_KEY=
+
+# Application
+APP_ENV=development
+DEBUG=True
+CORS_ORIGINS=http://localhost:3000,http://127.0.0.1:3000
+
+# Server
+HOST=0.0.0.0
+PORT=8000