refactor: consolidate all Node.js development into lib package

- Move scripts/ to lib/scripts/ and convert to ESM modules
- Consolidate dependencies: add live-server to lib/package.json
- Remove root package.json and node_modules split
- Preserve CLI integration via existing rebuild-library.sh
- Add development quickstart guide for new unified workflow
- Clean up outdated file references and duplicate assets

scripts/dev.js

@@ -1,115 +0,0 @@
-#!/usr/bin/env node
-
-/**
- * Development helper script for Insertr
- * Provides common development tasks and utilities
- */
-
-const { execSync, spawn } = require('child_process');
-const fs = require('fs');
-const path = require('path');
-
-const commands = {
-  serve: {
-    description: 'Start development server with live reload',
-    action: () => {
-      console.log('🚀 Starting Insertr development server...');
-      console.log('📂 Serving demo-site/ at http://localhost:3000');
-      console.log('🔄 Live reload enabled');
-      console.log('\n💡 Test the three user types:');
-      console.log('   👥 Customer: Visit the site normally');
-      console.log('   ✏️  Client: Click "Login as Client" → "Edit Mode: On"');
-      console.log('   🔧 Developer: View source to see integration\n');
-      
-      spawn('npx', ['live-server', 'demo-site', '--port=3000', '--open=/index.html'], {
-        stdio: 'inherit'
-      });
-    }
-  },
-
-  check: {
-    description: 'Check project status and validate setup',
-    action: () => {
-      console.log('🔍 Checking Insertr project status...\n');
-      
-      // Check files exist
-      const requiredFiles = [
-        'demo-site/index.html',
-        'demo-site/about.html', 
-        'demo-site/insertr/insertr.js',
-        'demo-site/insertr/insertr.css',
-        'package.json'
-      ];
-      
-      let allGood = true;
-      
-      requiredFiles.forEach(file => {
-        if (fs.existsSync(file)) {
-          console.log('✅', file);
-        } else {
-          console.log('❌', file, '(missing)');
-          allGood = false;
-        }
-      });
-      
-      if (allGood) {
-        console.log('\n🎉 All core files present!');
-        console.log('\n📊 Project stats:');
-        
-        // Count editable elements
-        const indexContent = fs.readFileSync('demo-site/index.html', 'utf8');
-        const aboutContent = fs.readFileSync('demo-site/about.html', 'utf8');
-        const insertrMatches = (indexContent + aboutContent).match(/class="insertr"/g) || [];
-        console.log(`   📝 Editable elements: ${insertrMatches.length}`);
-        
-        // Check library size
-        const libSize = fs.statSync('demo-site/insertr/insertr.js').size;
-        console.log(`   📦 Library size: ${(libSize / 1024).toFixed(1)}KB`);
-        
-        console.log('\n🚀 Ready to develop! Run: npm run dev');
-      } else {
-        console.log('\n❌ Some files are missing. Please check your setup.');
-        process.exit(1);
-      }
-    }
-  },
-
-  demo: {
-    description: 'Show demo instructions',
-    action: () => {
-      console.log('🎬 Insertr Demo Instructions\n');
-      console.log('1. 🌐 Start server: npm run dev');
-      console.log('2. 👀 Customer view: Browse the site normally');
-      console.log('3. 🔑 Client login: Click "Login as Client"');
-      console.log('4. ✏️  Edit mode: Click "Edit Mode: Off" to enable editing');
-      console.log('5. 📝 Edit content: Click any ✏️ button to edit');
-      console.log('6. 🔄 Try different content types (simple text vs rich markdown)');
-      console.log('7. 📄 Multi-page: Navigate to About page to see persistence\n');
-      console.log('🎯 Key features to test:');
-      console.log('   • Inline text editing');
-      console.log('   • Markdown editing for rich content');
-      console.log('   • Auto-save with visual feedback');
-      console.log('   • Content persistence across pages');
-      console.log('   • Responsive design on mobile\n');
-    }
-  }
-};
-
-// Parse command line arguments
-const command = process.argv[2] || 'help';
-
-if (commands[command]) {
-  commands[command].action();
-} else if (command === 'help' || command === '--help' || command === '-h') {
-  console.log('🛠️  Insertr Development Helper\n');
-  console.log('Available commands:\n');
-  Object.entries(commands).forEach(([name, cmd]) => {
-    console.log(`  ${name.padEnd(12)} ${cmd.description}`);
-  });
-  console.log('\nUsage: node scripts/dev.js <command>');
-  console.log('   or: npm run dev:help\n');
-} else {
-  console.log(`❌ Unknown command: ${command}`);
-  console.log('Run: node scripts/dev.js help');
-  process.exit(1);
-}