Fix Bootstrap Icons: Mover de CDN a local - Issue #135

PROBLEMA:
- Iconos de share buttons no se mostraban en staging
- Bootstrap Icons CDN causaba SecurityError (CORS)
- Browser bloqueaba acceso a cssRules del stylesheet cross-origin
- content: "" vacío en ::before pseudo-elements

SOLUCIÓN:
- Descargar Bootstrap Icons v1.11.3 localmente
- assets/vendor/bootstrap-icons.min.css (85KB)
- assets/vendor/fonts/ con woff2 y woff (298KB total)
- Actualizar enqueue-scripts.php para cargar local
- Agregar dependencia en apus-bootstrap
- Version 1.0.12 -> 1.0.13

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

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

wp-content/themes/apus-theme/inc/enqueue-scripts.php

@@ -49,11 +49,11 @@ function apus_enqueue_bootstrap() {
         'all'
     );
 
-    // Bootstrap Icons CSS - from CDN
+    // Bootstrap Icons CSS - LOCAL (Issue #135: CORS bloqueaba CDN)
     wp_enqueue_style(
         'bootstrap-icons',
-        'https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.min.css',
-        array(),
+        get_template_directory_uri() . '/assets/vendor/bootstrap-icons.min.css',
+        array('apus-bootstrap'),
         '1.11.3',
         'all'
     );