feat: caching, optimization, legal pages & footer

- WP Super Cache enabled (PHP mode, gzip, Nginx compatible)
- Autoptimize: CSS/HTML minification + deferred JS + Google Fonts optimization
- Cookie Notice: GDPR/LOPD banner styled with brand colors (navy/burgundy/gold)
- Legal pages: Aviso Legal, Política de Privacidad, Política de Cookies (ES)
- MU-plugin: custom footer with legal links + Cloud Host credit
- Footer: copyright, legal nav, Hosted & Maintained by Cloud Host (cloudhost.es)
- Security: X-Frame-Options, X-Content-Type, Referrer-Policy headers
- Security: XML-RPC disabled, REST user enumeration blocked
- Performance: emoji scripts removed, post revisions limited to 3

wp-content/plugins/autoptimize/classes/critcss-inc/admin_settings_debug.php

@@ -0,0 +1,87 @@
+<?php
+/**
+ * Debug panel.
+ */
+
+// Attach wpdb() object.
+global $wpdb;
+
+// Query AO's options.
+$ao_options = $wpdb->get_results(
+    '
+    SELECT option_name  AS name,
+    option_value AS value
+    FROM ' . $wpdb->options . '
+    WHERE option_name LIKE "autoptimize_%%"
+    ORDER BY name
+    ',
+    ARRAY_A
+);
+
+// Query AO's transients.
+$ao_trans = $wpdb->get_results(
+    '
+    SELECT option_name  AS name,
+    option_value AS value
+    FROM ' . $wpdb->options . '
+    WHERE option_name LIKE "_transient_autoptimize_%%"
+    OR option_name LIKE "_transient_timeout_autoptimize_%%"
+    ',
+    ARRAY_A
+);
+
+// Render debug panel if there's something to show.
+if ( $ao_options || $ao_trans ) {
+    ?>
+<!-- BEGIN: Settings Debug -->
+<ul>
+    <li class="itemDetail">
+        <h2 class="itemTitle"><?php esc_html_e( 'Debug Information', 'autoptimize' ); ?></h2>
+
+        <?php
+        // Render options.
+        if ( $ao_options ) {
+            ?>
+            <h4><?php esc_html_e( 'Options', 'autoptimize' ); ?>:</h4>
+            <table class="form-table debug">
+            <?php
+            foreach ( $ao_options as $option ) {
+                ?>
+                <tr>
+                    <th scope="row">
+                        <?php echo wp_strip_all_tags( $option['name'] ); ?>
+                    </th>
+                    <td>
+                        <?php
+                        if ( 'autoptimize_ccss_queue' == $option['name'] || 'autoptimize_ccss_rules' == $option['name'] ) {
+                            $value = print_r( json_decode( wp_strip_all_tags( $option['value'] ), true ), true );
+                            if ( $value ) {
+                                echo "Raw JSON:\n<pre>" . wp_strip_all_tags( $option['value'] ) . "</pre>\n\nDecoded JSON:\n<pre>" . wp_strip_all_tags( $value ) . '</pre>';
+                            } else {
+                                echo 'Empty';
+                            }
+                        } else {
+                            echo wp_strip_all_tags( $option['value'] );
+                        }
+                        ?>
+                    </td>
+                </tr>
+                <?php
+            }
+            ?>
+            </table>
+            <hr />
+            <?php
+        }
+        // Render WP-Cron intervals and scheduled events.
+        ?>
+        <h4><?php esc_html_e( 'WP-Cron Intervals', 'autoptimize' ); ?>:</h4>
+        <pre><?php print_r( wp_get_schedules() ); ?></pre>
+        <hr />
+        <h4><?php esc_html_e( 'WP-Cron Scheduled Events', 'autoptimize' ); ?>:</h4>
+        <pre><?php print_r( _get_cron_array() ); ?></pre>
+    </li>
+</ul>
+<!-- END: Settings Debug -->
+    <?php
+}