Fix demo site auto-enhancement and content persistence

- Restructure demo directory from test-sites/ to demos/ with flattened layout
- Add auto-enhancement on server startup for all sites with auto_enhance: true
- Fix inconsistent content ID generation that prevented dan-eden-portfolio content persistence
- Update server configuration to enhance from source to separate output directories
- Remove manual enhancement from justfile in favor of automatic server enhancement
- Clean up legacy test files and unused restore command
- Update build system to use CDN endpoint instead of file copying

demos/scripts/test-demo.js

@@ -0,0 +1,43 @@
+#!/usr/bin/env node
+/**
+ * Test script to verify demo sites are working correctly
+ */
+
+import { execSync } from 'child_process';
+import fs from 'fs';
+import path from 'path';
+
+console.log('🧪 Testing Insertr Demo Infrastructure');
+console.log('=====================================\n');
+
+// Test 1: Check if enhanced sites exist
+console.log('📁 Checking enhanced test sites...');
+
+const danEdenPath = './demos/simple/dan-eden-portfolio-enhanced';
+if (fs.existsSync(danEdenPath)) {
+    console.log('✅ Dan Eden enhanced site exists');
+    
+    // Check if it has insertr elements
+    const indexPath = path.join(danEdenPath, 'index.html');
+    if (fs.existsSync(indexPath)) {
+        const content = fs.readFileSync(indexPath, 'utf8');
+        const insertrElements = content.match(/data-content-id="[^"]+"/g);
+        if (insertrElements && insertrElements.length > 0) {
+            console.log(`✅ Found ${insertrElements.length} insertr-enhanced elements`);
+        } else {
+            console.log('❌ No insertr elements found in enhanced site');
+        }
+    } else {
+        console.log('❌ index.html not found in enhanced site');
+    }
+} else {
+    console.log('❌ Dan Eden enhanced site not found');
+    console.log('   Run: just enhance-demos');
+}
+
+console.log('\n🎯 Demo Commands Available:');
+console.log('   just demo                - Default demo');
+console.log('   just demo dan-eden       - Dan Eden portfolio demo');  
+console.log('   just list-demos          - List all available demos');
+
+console.log('\n🚀 Testing complete!');