Media browser: recursive scan entire content/ tree, /-media/ URL prefix, editor change detection fix

- handleMediaList() now scans content/ recursively for all media files
- URLs use /-media/ prefix mapping directly to content/ (no special cases)
- index.php: added /-media/ route, kept /-assets/ for backward compat
- editor-toolbar.js: fixed editor.on('change') placement (was inside switchMode)
- content-edit.php and content-new.php: back-btn unsaved-changes detection
- Removed unused __editorCleanup global

cms/core/class/CodePressCMS.php

@@ -45,7 +45,7 @@ class CodePressCMS {
         $this->currentLanguage = $this->getCurrentLanguage();
         $this->translations = $this->loadTranslations($this->currentLanguage);
         
-        // Initialize plugin manager (files already loaded in engine/core/index.php)
+        // Initialize plugin manager (files already loaded in cms/core/index.php)
         $this->pluginManager = new PluginManager(__DIR__ . '/../../../plugins');
         $api = new CMSAPI($this);
         $this->pluginManager->setAPI($api);
@@ -182,7 +182,10 @@ class CodePressCMS {
         $result = [];
         
         foreach ($items as $item) {
-            if ($item[0] === '.') continue;
+            if ($item[0] === '.' || $item[0] === '-') continue;
+            
+            // Skip assets directory (old name, kept for safety)
+            if ($item === 'assets' && is_dir($dir . '/' . $item)) continue;
             
             // Skip language-specific content that doesn't match current language
             $availableLangs = array_keys($this->getAvailableLanguages());
@@ -640,6 +643,12 @@ class CodePressCMS {
      * @return string Formatted display name
      */
     private function formatDisplayName($filename) {
+        // Preserve leading dash before processing
+        $hasLeadingDash = $filename[0] === '-';
+        if ($hasLeadingDash) {
+            $filename = substr($filename, 1);
+        }
+        
         // Remove language prefixes dynamically based on available languages
         $availableLangs = array_keys($this->getAvailableLanguages());
         $langPattern = '/^(' . implode('|', $availableLangs) . ')\.(.+)$/';
@@ -656,11 +665,12 @@ class CodePressCMS {
             'ict' => 'ICT',
         ];
         if (isset($specialCases[strtolower($filename)])) {
-            return $specialCases[strtolower($filename)];
+            return ($hasLeadingDash ? '- ' : '') . $specialCases[strtolower($filename)];
         }
         
         // Replace hyphens and underscores with spaces, then title case
         $name = str_replace(['-', '_'], ' ', $filename);
+        $name = trim($name);
         $name = ucwords(strtolower($name));
         
         // Post-process special cases in compound names
@@ -668,7 +678,7 @@ class CodePressCMS {
             $name = str_ireplace(ucfirst($lower), $correct, $name);
         }
         
-        return $name;
+        return ($hasLeadingDash ? '- ' : '') . $name;
     }
     
     /**
@@ -983,8 +993,12 @@ private function getGuidePage() {
         // Get homepage title
         $homepageTitle = $this->getHomepageTitle();
         
-        // Get sidebar content from plugins
-        $sidebarContent = $this->pluginManager->getSidebarContent();
+        // Get sidebar content from plugins (filtered per-page if specified in frontmatter)
+        $allowedPlugins = null;
+        if (!empty($page['metadata']['plugins'])) {
+            $allowedPlugins = array_map('trim', explode(',', $page['metadata']['plugins']));
+        }
+        $sidebarContent = $this->pluginManager->getSidebarContent($allowedPlugins);
         
         // Get layout from page metadata
         $layout = $page['layout'] ?? 'sidebar-content';
@@ -994,7 +1008,7 @@ private function getGuidePage() {
             'site_title' => $this->config['site_title'],
             'page_title' => htmlspecialchars($page['title']),
 
-            'content' => $page['content'],
+            'content' => $this->processContent($page['content']),
             'sidebar_content' => $sidebarContent,
             'layout' => $layout,
             'page_metadata' => $page['metadata'] ?? [],
@@ -1017,10 +1031,14 @@ private function getGuidePage() {
             // Theme colors
             'header_color' => $this->config['theme']['header_color'] ?? '#0d6efd',
             'header_font_color' => $this->config['theme']['header_font_color'] ?? '#ffffff',
+            'header_height' => $this->config['theme']['header_height'] ?? '56',
             'navigation_color' => $this->config['theme']['navigation_color'] ?? '#f8f9fa',
             'navigation_font_color' => $this->config['theme']['navigation_font_color'] ?? '#000000',
+            'nav_height' => $this->config['theme']['nav_height'] ?? '42',
             'sidebar_background' => $this->config['theme']['sidebar_background'] ?? '#f8f9fa',
             'sidebar_border' => $this->config['theme']['sidebar_border'] ?? '#dee2e6',
+            'background_image_css' => $this->getBackgroundImageCss(),
+            'background_image_opacity' => $this->getBackgroundImageOpacity(),
             // Language
             'current_lang' => $this->currentLanguage,
             'current_lang_upper' => strtoupper($this->currentLanguage),
@@ -1286,4 +1304,27 @@ private function getGuidePage() {
         }
         return false;
     }
+
+    private function getBackgroundImageCss(): string
+    {
+        $bg = $this->config['theme']['background_image'] ?? '';
+        if (empty($bg)) {
+            return 'none';
+        }
+        if (str_starts_with($bg, 'http')) {
+            return 'url(' . $bg . ')';
+        }
+        return 'url(/themes/' . $bg . ')';
+    }
+
+    private function getBackgroundImageOpacity(): int
+    {
+        $opacity = intval($this->config['theme']['background_image_opacity'] ?? 100);
+        return max(0, min(100, $opacity));
+    }
+
+    private function processContent(string $content): string
+    {
+        return str_replace('-/assets/', '/-assets/', $content);
+    }
 }