perf(fonts): Self-host Poppins fonts

- Add WOFF2 font files for Poppins (400, 500, 600, 700 weights)
- Create @font-face declarations in css-global-fonts.css
- Remove Google Fonts dependency from enqueue-scripts.php
- Remove preconnect hints for fonts.googleapis.com from seo.php

Benefits:
- Eliminates 36.2 kB external transfer from Google Fonts
- Improves GDPR compliance (no Google tracking)
- Reduces render-blocking requests
- Faster font loading from local server

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

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

assets/css/css-global-fonts.css

@@ -45,26 +45,22 @@
  */
 
 /* ============================================
-   POPPINS (Opcional - Solo si se activa)
+   POPPINS (Self-hosted)
    ============================================
 
-   Las siguientes declaraciones @font-face solo
-   se cargan cuando el usuario activa "Use Custom Fonts"
-   en Apariencia > Personalizar > Tipografía.
+   Fuentes Poppins alojadas localmente para:
+   - Eliminar dependencia de Google Fonts
+   - Mejorar rendimiento (sin requests externos)
+   - Cumplimiento GDPR (sin tracking de Google)
 
-   Para activar Poppins:
-   1. Descargar archivos WOFF2 de Google Fonts
-   2. Colocar en assets/fonts/poppins/
-   3. Descomentar las declaraciones @font-face
-   4. Activar en Customizer
+   Pesos incluidos: 400, 500, 600, 700
+   Formato: WOFF2 (mejor compresión)
 
    ============================================ */
 
-/*
 @font-face {
     font-family: 'Poppins';
-    src: url('../fonts/poppins/Poppins-Regular.woff2') format('woff2'),
-         url('../fonts/poppins/Poppins-Regular.woff') format('woff');
+    src: url('../fonts/poppins-v24-latin-regular.woff2') format('woff2');
     font-weight: 400;
     font-style: normal;
     font-display: swap;
@@ -72,8 +68,7 @@
 
 @font-face {
     font-family: 'Poppins';
-    src: url('../fonts/poppins/Poppins-Medium.woff2') format('woff2'),
-         url('../fonts/poppins/Poppins-Medium.woff') format('woff');
+    src: url('../fonts/poppins-v24-latin-500.woff2') format('woff2');
     font-weight: 500;
     font-style: normal;
     font-display: swap;
@@ -81,8 +76,7 @@
 
 @font-face {
     font-family: 'Poppins';
-    src: url('../fonts/poppins/Poppins-SemiBold.woff2') format('woff2'),
-         url('../fonts/poppins/Poppins-SemiBold.woff') format('woff');
+    src: url('../fonts/poppins-v24-latin-600.woff2') format('woff2');
     font-weight: 600;
     font-style: normal;
     font-display: swap;
@@ -90,21 +84,11 @@
 
 @font-face {
     font-family: 'Poppins';
-    src: url('../fonts/poppins/Poppins-Bold.woff2') format('woff2'),
-         url('../fonts/poppins/Poppins-Bold.woff') format('woff');
+    src: url('../fonts/poppins-v24-latin-700.woff2') format('woff2');
     font-weight: 700;
     font-style: normal;
     font-display: swap;
 }
-*/
-
-/* Cuando Poppins esté activo, se aplica con clase .use-custom-fonts */
-/*
-.use-custom-fonts {
-    --font-primary: 'Poppins', var(--font-system);
-    --font-headings: 'Poppins', var(--font-system);
-}
-*/
 
 /* ============================================
    UTILIDADES DE FUENTES