chore: clean up project - remove temporary files and add quick setup guide

- Removed 18 temporary/test files (check_data.js, test_db_insert.js, etc.)
- Removed old deployment scripts and debug utilities
- Added setup.sh for one-command deployment
- Rewrote QUICKSTART.md with comprehensive 3-step setup guide
- Enhanced ecosystem.config.js with logging and restart config
- Project is now clean and deployment-ready

setup.sh

@@ -0,0 +1,45 @@
+#!/bin/bash
+# Quick Setup Script for Web Performance Test
+# This script sets up the complete environment in minutes
+
+set -e  # Exit on error
+
+echo "🚀 Web Performance Test - Quick Setup"
+echo "======================================"
+echo ""
+
+# 1. Install Dependencies
+echo "📦 Installing Node.js dependencies..."
+npm install
+
+# 2. Setup Database Configuration
+echo "🗄️  Setting up database configuration..."
+if [ ! -f "lib/db-config.js" ]; then
+    echo ""
+    echo "⚠️  Database configuration not found!"
+    echo "Please create lib/db-config.js from the template:"
+    echo ""
+    echo "  cp lib/db-config.template.js lib/db-config.js"
+    echo ""
+    echo "Then edit lib/db-config.js with your database credentials:"
+    echo "  - host: Your PostgreSQL server IP"
+    echo "  - user: Database username (default: postgres)"
+    echo "  - password: Database password"
+    echo "  - database: Database name (default: webperformance)"
+    echo ""
+    read -p "Press Enter after you've created and configured lib/db-config.js..."
+fi
+
+# 3. Initialize Database
+echo "🔧 Initializing database..."
+node lib/db.js
+
+echo ""
+echo "✅ Setup Complete!"
+echo ""
+echo "To start the application:"
+echo "  npm start"
+echo ""
+echo "Or with PM2 (recommended for production):"
+echo "  pm2 start ecosystem.config.js"
+echo ""