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

cmd/serve.go

@@ -73,7 +73,7 @@ func runServe(cmd *cobra.Command, args []string) {
 	contentClient := content.NewDatabaseClient(database)
 
 	// Initialize site manager
-	siteManager := content.NewSiteManager(contentClient, "./insertr-backups", devMode)
+	siteManager := content.NewSiteManager(contentClient, devMode)
 
 	// Load sites from configuration
 	if siteConfigs := viper.Get("server.sites"); siteConfigs != nil {
@@ -88,15 +88,15 @@ func runServe(cmd *cobra.Command, args []string) {
 					if path, ok := configMap["path"].(string); ok {
 						site.Path = path
 					}
+					if sourcePath, ok := configMap["source_path"].(string); ok {
+						site.SourcePath = sourcePath
+					}
 					if domain, ok := configMap["domain"].(string); ok {
 						site.Domain = domain
 					}
 					if autoEnhance, ok := configMap["auto_enhance"].(bool); ok {
 						site.AutoEnhance = autoEnhance
 					}
-					if backupOriginals, ok := configMap["backup_originals"].(bool); ok {
-						site.BackupOriginals = backupOriginals
-					}
 					if site.SiteID != "" && site.Path != "" {
 						sites = append(sites, site)
 					}
@@ -108,6 +108,14 @@ func runServe(cmd *cobra.Command, args []string) {
 		}
 	}
 
+	// Auto-enhance sites if enabled
+	if devMode {
+		log.Printf("🔄 Auto-enhancing sites in development mode...")
+		if err := siteManager.EnhanceAllSites(); err != nil {
+			log.Printf("⚠️ Some sites failed to enhance: %v", err)
+		}
+	}
+
 	// Initialize handlers
 	contentHandler := api.NewContentHandler(database, authService)
 	contentHandler.SetSiteManager(siteManager)