fix: Update all paths to PascalCase (Css, Js, Fonts)

- Update enqueue-scripts.php: /Assets/css/ → /Assets/Css/, /Assets/js/ → /Assets/Js/
- Update related-posts.php, performance.php, minify-css.php, CSSConflictValidator.php
- Fix 404 errors for CSS/JS/Fonts on production

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Inc/performance.php

@@ -346,7 +346,7 @@ function roi_preload_critical_resources() {
 	// Preload del CSS de fuentes (crítico para evitar FOIT/FOUT)
 	printf(
 		'<link rel="preload" href="%s" as="style">' . "\n",
-		esc_url( $theme_uri . '/Assets/css/css-global-fonts.css' )
+		esc_url( $theme_uri . '/Assets/Css/css-global-fonts.css' )
 	);
 
 	// Fase 4.3 PageSpeed: Preload de TODAS las fuentes Poppins para eliminar CLS