Initial commit: JMESPath Testing Tool

- React-based web application for testing JMESPath expressions
- macOS-first containerization with Apple container command
- Bootstrap UI with real-time evaluation
- GitHub Actions CI/CD pipeline
- Docker fallback support
- Comprehensive documentation and development scripts

scripts/dev.sh

@@ -0,0 +1,38 @@
+#!/bin/bash
+
+# JMESPath Testing Tool - Development Script
+# Optimized for macOS development environment
+
+set -e
+
+echo "🍎 JMESPath Testing Tool - macOS Development"
+echo "==========================================="
+echo ""
+
+# Check environment
+if [[ "$OSTYPE" == "darwin"* ]]; then
+    echo "✅ Running on macOS"
+else
+    echo "⚠️  This script is optimized for macOS but will attempt to run anyway."
+fi
+
+# Check Node.js
+if command -v node &> /dev/null; then
+    echo "✅ Node.js version: $(node --version)"
+else
+    echo "❌ Node.js not found. Please install Node.js 24 LTS."
+    exit 1
+fi
+
+# Install dependencies if needed
+if [ ! -d "node_modules" ]; then
+    echo "📦 Installing dependencies..."
+    npm install
+fi
+
+# Start development server
+echo "🚀 Starting development server..."
+echo "   The app will open at http://localhost:3000"
+echo "   Press Ctrl+C to stop the server"
+echo ""
+npm start