diff --git a/app/cache.php b/app/cache.php
index 69eee48..e0f2624 100644
--- a/app/cache.php
+++ b/app/cache.php
@@ -1,9 +1,9 @@
 <?php
 
-function getCachedMarkdown(string $filePath): ?string {
+function getCachedMarkdown(string $filePath, string $langPrefix = ''): ?string {
     $cacheDir = '/tmp/folderweb_cache';
     $mtime = filemtime($filePath);
-    $cacheKey = md5($filePath . $mtime);
+    $cacheKey = md5($filePath . $mtime . $langPrefix);
     $cachePath = "$cacheDir/$cacheKey";
     
     if (file_exists($cachePath)) {
@@ -13,14 +13,14 @@ function getCachedMarkdown(string $filePath): ?string {
     return null;
 }
 
-function setCachedMarkdown(string $filePath, string $html): void {
+function setCachedMarkdown(string $filePath, string $html, string $langPrefix = ''): void {
     $cacheDir = '/tmp/folderweb_cache';
     if (!is_dir($cacheDir)) {
         mkdir($cacheDir, 0755, true);
     }
     
     $mtime = filemtime($filePath);
-    $cacheKey = md5($filePath . $mtime);
+    $cacheKey = md5($filePath . $mtime . $langPrefix);
     $cachePath = "$cacheDir/$cacheKey";
     
     file_put_contents($cachePath, $html);
diff --git a/app/rendering.php b/app/rendering.php
index 4da9798..f197a37 100644
--- a/app/rendering.php
+++ b/app/rendering.php
@@ -1,16 +1,19 @@
 <?php
 
-function renderContentFile(string $filePath): string {
+function renderContentFile(string $filePath, ?Context $ctx = null): string {
     $ext = pathinfo($filePath, PATHINFO_EXTENSION);
 
     ob_start();
     if ($ext === 'md') {
         require_once __DIR__ . '/cache.php';
-        $cached = getCachedMarkdown($filePath);
+        $langPrefix = $ctx ? $ctx->get('langPrefix', '') : '';
+        $cached = getCachedMarkdown($filePath, $langPrefix);
 
         if ($cached !== null) {
             echo $cached;
         } else {
+            // Update to newer versions before PHP 9.0 release
+            // Current versions have been patched for PHP 8.4+ compatibility
             if (!class_exists('Parsedown')) {
                 require_once __DIR__ . '/vendor/Parsedown.php';
             }
@@ -18,10 +21,25 @@ function renderContentFile(string $filePath): string {
                 require_once __DIR__ . '/vendor/ParsedownExtra.php';
             }
             $html = '<article>' . (new ParsedownExtra())->text(file_get_contents($filePath)) . '</article>';
-            setCachedMarkdown($filePath, $html);
+            
+            // Add language prefix to internal links
+            if ($langPrefix) {
+                $html = preg_replace(
+                    '/href="(\/[^"]*)"/', 
+                    'href="' . $langPrefix . '$1"', 
+                    $html
+                );
+            }
+            
+            setCachedMarkdown($filePath, $html, $langPrefix);
             echo $html;
         }
     } elseif (in_array($ext, ['html', 'php'])) {
+        // Make template variables available to PHP content files
+        if ($ctx !== null && $ext === 'php') {
+            $templateVars = Hooks::apply(Hook::TEMPLATE_VARS, [], $ctx);
+            extract($templateVars);
+        }
         include $filePath;
     }
     return ob_get_clean();
@@ -29,12 +47,12 @@ function renderContentFile(string $filePath): string {
 
 function renderTemplate(Context $ctx, string $content, int $statusCode = 200): void {
     global $GLOBALS;
-    
+
     // Get basic template vars
     $navigation = $ctx->navigation;
     $homeLabel = $ctx->homeLabel;
     $pageTitle = null;
-    
+
     // Let plugins add template variables
     $templateVars = Hooks::apply(Hook::TEMPLATE_VARS, [
         'content' => $content,
@@ -42,7 +60,7 @@ function renderTemplate(Context $ctx, string $content, int $statusCode = 200): v
         'homeLabel' => $homeLabel,
         'pageTitle' => $pageTitle
     ], $ctx);
-    
+
     extract($templateVars);
 
     http_response_code($statusCode);
@@ -59,7 +77,7 @@ function renderFile(Context $ctx, string $filePath): void {
     $ext = pathinfo($realPath, PATHINFO_EXTENSION);
 
     if (in_array($ext, CONTENT_EXTENSIONS)) {
-        $content = renderContentFile($realPath);
+        $content = renderContentFile($realPath, $ctx);
 
         $pageDir = dirname($realPath);
         $pageMetadata = loadMetadata($pageDir);
@@ -97,7 +115,7 @@ function renderFile(Context $ctx, string $filePath): void {
             'pageCssHash' => $pageCssHash,
             'socialImageUrl' => $socialImageUrl
         ], $ctx);
-        
+
         extract($templateVars);
 
         // Wrap content with page template
@@ -116,11 +134,11 @@ function renderFile(Context $ctx, string $filePath): void {
 function renderMultipleFiles(Context $ctx, array $files, string $pageDir): void {
     $content = '';
     foreach ($files as $file) {
-        $content .= renderContentFile($file);
+        $content .= renderContentFile($file, $ctx);
     }
 
     $pageMetadata = loadMetadata($pageDir);
-    
+
     // Load page-level plugins
     getPluginManager()->loadPagePlugins($pageMetadata);
 
@@ -154,7 +172,7 @@ function renderMultipleFiles(Context $ctx, array $files, string $pageDir): void
         'pageCssHash' => $pageCssHash,
         'socialImageUrl' => $socialImageUrl
     ], $ctx);
-    
+
     extract($templateVars);
 
     // Wrap content with page template