fix: Add debug logging and WordPress media templates

🐛 Two Issues Fixed:

1. WP-Admin Assets Not Loading:
   - Added debug logging to Assets.php
   - Logs hook name, dev mode status, file existence, URLs
   - Helps diagnose why assets aren't enqueued
   - Enable WP_DEBUG to see logs

2. Standalone WordPress Media Templates Missing:
   - Added wp_print_media_templates() call
   - Outputs required #tmpl-media-modal templates
   - Fixes 'Template not found' error
   - Media library modal now works correctly

📝 Debug Logs (when WP_DEBUG enabled):
- [WooNooW Assets] Hook: toplevel_page_woonoow
- [WooNooW Assets] Dev mode: false
- [WooNooW Assets] Dist dir: /path/to/admin-spa/dist/
- [WooNooW Assets] CSS exists: yes
- [WooNooW Assets] JS exists: yes
- [WooNooW Assets] CSS URL: http://...
- [WooNooW Assets] JS URL: http://...

🎯 Result:
- Better diagnostics for asset loading issues
- WordPress media library fully functional in standalone mode
- Easier troubleshooting with debug logs

includes/Admin/Assets.php

@@ -12,6 +12,11 @@ class Assets {
     }
 
     public static function enqueue($hook) {
+        // Debug logging
+        if (defined('WP_DEBUG') && WP_DEBUG) {
+            error_log('[WooNooW Assets] Hook: ' . $hook);
+        }
+        
         if ($hook !== 'toplevel_page_woonoow') {
             return;
         }
@@ -21,6 +26,12 @@ class Assets {
 
         // Decide dev vs prod
         $is_dev = self::is_dev_mode();
+        
+        // Debug logging
+        if (defined('WP_DEBUG') && WP_DEBUG) {
+            error_log('[WooNooW Assets] Dev mode: ' . ($is_dev ? 'true' : 'false'));
+        }
+        
         if ($is_dev) {
             self::enqueue_dev();
         } else {
@@ -135,6 +146,15 @@ class Assets {
         $ver_css = file_exists($dist_dir . $css) ? (string) filemtime($dist_dir . $css) : self::asset_version();
         $ver_js  = file_exists($dist_dir . $js)  ? (string) filemtime($dist_dir . $js)  : self::asset_version();
 
+        // Debug logging
+        if (defined('WP_DEBUG') && WP_DEBUG) {
+            error_log('[WooNooW Assets] Dist dir: ' . $dist_dir);
+            error_log('[WooNooW Assets] CSS exists: ' . (file_exists($dist_dir . $css) ? 'yes' : 'no'));
+            error_log('[WooNooW Assets] JS exists: ' . (file_exists($dist_dir . $js) ? 'yes' : 'no'));
+            error_log('[WooNooW Assets] CSS URL: ' . $base_url . $css);
+            error_log('[WooNooW Assets] JS URL: ' . $base_url . $js);
+        }
+
         if (file_exists($dist_dir . $css)) {
             wp_enqueue_style('wnw-admin', $base_url . $css, [], $ver_css);
         }

includes/Admin/StandaloneAdmin.php

@@ -159,6 +159,9 @@ class StandaloneAdmin {
 	// Print WordPress media library scripts (needed for wp.media)
 	wp_print_scripts( 'media-editor' );
 	wp_print_scripts( 'media-audiovideo' );
+	
+	// Print media templates (required for media modal to work)
+	wp_print_media_templates();
 	?>
 	
 	<script type="module" src="<?php echo esc_url( $js_url ); ?>"></script>