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

internal/content/enhancer.go

@@ -192,6 +192,11 @@ func (e *Enhancer) enhanceWithEngine(htmlContent []byte, filePath string) ([]byt
 	return []byte(buf.String()), nil
 }
 
+// SetSiteID sets the site ID for the enhancer
+func (e *Enhancer) SetSiteID(siteID string) {
+	e.siteID = siteID
+}
+
 // EnhanceInPlace performs in-place enhancement of static site files
 func (e *Enhancer) EnhanceInPlace(sitePath string, siteID string) error {
 	// Use the provided siteID (derivation should happen at CLI level)
@@ -204,7 +209,7 @@ func (e *Enhancer) EnhanceInPlace(sitePath string, siteID string) error {
 // DeriveOrValidateSiteID automatically derives site_id for demo paths or validates for production
 func DeriveOrValidateSiteID(sitePath string, configSiteID string) string {
 	// Check if this is a demo path
-	if strings.Contains(sitePath, "/demos/") {
+	if strings.Contains(sitePath, "/demos/") || strings.Contains(sitePath, "./demos/") {
 		return deriveDemoSiteID(sitePath)
 	}
 
@@ -222,10 +227,10 @@ func deriveDemoSiteID(sitePath string) string {
 	}
 	absPath = filepath.Clean(absPath)
 
-	// Look for patterns in demo paths:
-	// demos/demo-site_enhanced -> "demo"
-	// demos/simple/test-simple_enhanced -> "simple"
-	// demos/simple/dan-eden-portfolio -> "dan-eden"
+	// Flattened structure - just use directory name after demos/
+	// demos/default -> "default"
+	// demos/simple -> "simple"
+	// demos/dan-eden-portfolio -> "dan-eden-portfolio"
 
 	parts := strings.Split(absPath, string(filepath.Separator))
 
@@ -240,41 +245,14 @@ func deriveDemoSiteID(sitePath string) string {
 
 	if demosIndex == -1 || demosIndex >= len(parts)-1 {
 		// Fallback if demos not found in path
-		return "demo"
+		return "default"
 	}
 
-	// Get the segment after demos/
-	nextSegment := parts[demosIndex+1]
+	// Get the segment after demos/ and clean it
+	dirName := parts[demosIndex+1]
+	dirName = strings.TrimSuffix(dirName, "_enhanced")
 
-	// Handle different demo directory patterns:
-	if strings.HasPrefix(nextSegment, "demo-site") {
-		return "demo"
-	}
-
-	if nextSegment == "simple" && len(parts) > demosIndex+2 {
-		// For demos/simple/something, use the something part
-		finalSegment := parts[demosIndex+2]
-
-		// Extract meaningful name from directory
-		if strings.HasPrefix(finalSegment, "test-") {
-			// test-simple_enhanced -> simple
-			return "simple"
-		}
-		if strings.Contains(finalSegment, "dan-eden") {
-			return "dan-eden"
-		}
-
-		// Generic case: use the directory name as-is
-		return strings.TrimSuffix(finalSegment, "_enhanced")
-	}
-
-	// Default case: use the immediate subdirectory of demos/
-	result := strings.TrimSuffix(nextSegment, "_enhanced")
-
-	// Clean up common suffixes
-	result = strings.TrimSuffix(result, "-site")
-
-	return result
+	return dirName
 }
 
 // copyFile copies a file from src to dst