feat(widgets): render icon fields with the universal icon picker

The widget FormRenderer icon case and the nav-menu item icon field now
emit the shared picker (preview + choose/clear + editable text input,
delegated events so lazy forms and repeater rows work). Icon values are
sanitized through aksrt_sanitize_icon_value on both save paths so inline
customsvg- markup survives; the widget admin screen enqueues the picker.

src/Admin/NavMenuOptions.php

@@ -21,18 +21,18 @@ class NavMenuOptions {
 		if ($hook !== 'nav-menus.php') {
 			return;
 		}
-		$path = get_template_directory() . '/assets/js/admin-nav-menu-senior.js';
-		if (!file_exists($path)) {
-			return;
-		}
 		wp_enqueue_media();
-		wp_enqueue_script(
-			'aksrt-admin-nav-menu-senior',
-			get_template_directory_uri() . '/assets/js/admin-nav-menu-senior.js',
-			['jquery'],
-			(string) filemtime($path),
-			true
-		);
+		aksrt_icon_picker_assets();
+		$path = get_template_directory() . '/assets/js/admin-nav-menu-senior.js';
+		if (file_exists($path)) {
+			wp_enqueue_script(
+				'aksrt-admin-nav-menu-senior',
+				get_template_directory_uri() . '/assets/js/admin-nav-menu-senior.js',
+				['jquery'],
+				(string) filemtime($path),
+				true
+			);
+		}
 	}
 
 	/**
@@ -57,11 +57,15 @@ class NavMenuOptions {
 		?>
 		<p class="field-aksrt-icon description description-wide">
 			<label for="edit-menu-item-aksrt-icon-<?php echo esc_attr((string) $item_id); ?>">
-				<?php esc_html_e('图标 class（如 fa fas fa-home）', 'aksrt'); ?><br>
-				<input type="text" id="edit-menu-item-aksrt-icon-<?php echo esc_attr((string) $item_id); ?>"
-					class="widefat" name="aksrt_menu_options[<?php echo esc_attr((string) $item_id); ?>][icon]"
-					value="<?php echo esc_attr($icon); ?>">
+				<?php esc_html_e('图标', 'aksrt'); ?>
 			</label>
+			<?php
+			echo aksrt_icon_picker_field(
+				sprintf('aksrt_menu_options[%d][icon]', $item_id),
+				sprintf('edit-menu-item-aksrt-icon-%d', $item_id),
+				$icon
+			);
+			?>
 		</p>
 		<p class="field-aksrt-badge description description-thin">
 			<label for="edit-menu-item-aksrt-badge-<?php echo esc_attr((string) $item_id); ?>">
@@ -127,7 +131,7 @@ class NavMenuOptions {
 		$raw = wp_unslash($_POST['aksrt_menu_options'][ $menu_item_db_id ]);
 
 		$clean = [
-			'icon'         => sanitize_text_field((string) ($raw['icon'] ?? '')),
+			'icon'         => aksrt_sanitize_icon_value((string) ($raw['icon'] ?? '')),
 			'badge'        => sanitize_text_field((string) ($raw['badge'] ?? '')),
 			'badge_class'  => sanitize_html_class((string) ($raw['badge_class'] ?? '')),
 			'submenu_s'    => !empty($raw['submenu_s']),

src/Admin/SchemaProvider.php

@@ -802,6 +802,10 @@ class SchemaProvider {
                     }
                 }
                 return $out;
+            case 'icon':
+                return function_exists('aksrt_sanitize_icon_value')
+                    ? aksrt_sanitize_icon_value((string) $value)
+                    : sanitize_text_field((string) $value);
             default:
                 return sanitize_text_field((string) $value);
         }
@@ -993,7 +997,7 @@ class SchemaProvider {
             // 自定义面板（验证码服务商等）按对象存储
             'custom'   => 'array',
             'color'    => 'string',
-            'icon'     => 'string',
+            'icon'     => 'icon',
             'media'    => 'url',
 			'upload'   => 'url',
 			'gallery'  => 'attachment_ids',

src/WidgetSystem/AdminFormController.php

@@ -28,6 +28,7 @@ final class AdminFormController {
 		wp_enqueue_script('jquery-ui-sortable');
 		wp_enqueue_style('aksrt-widget-admin', AKSRT_URI . '/assets/widgets/admin.css', ['wp-color-picker'], AKSRT_VERSION);
 		wp_enqueue_style('aksrt-widget-preview', AKSRT_URI . '/assets/widgets/frontend.css', [], AKSRT_VERSION);
+		aksrt_icon_picker_assets(['wp-color-picker']);
 		wp_enqueue_script('aksrt-widget-admin-core', AKSRT_URI . '/assets/widgets/admin-core.js', [], AKSRT_VERSION, true);
 		wp_enqueue_script('aksrt-widget-admin', AKSRT_URI . '/assets/widgets/admin.js', ['jquery', 'jquery-ui-sortable', 'wp-color-picker', 'aksrt-widget-admin-core'], AKSRT_VERSION, true);
 		wp_localize_script('aksrt-widget-admin', 'aksrtWidgetAdmin', [

src/WidgetSystem/FieldSchema.php

@@ -81,7 +81,9 @@ final class FieldSchema {
 			case 'color':
 				return self::color((string) $value);
 			case 'icon':
-				return sanitize_text_field((string) $value);
+				return function_exists('aksrt_sanitize_icon_value')
+					? aksrt_sanitize_icon_value((string) $value)
+					: sanitize_text_field((string) $value);
 			case 'textarea':
 				return !empty($field['allow_html']) ? wp_kses_post((string) $value) : sanitize_textarea_field((string) $value);
 			case 'text':

src/WidgetSystem/FormRenderer.php

@@ -79,7 +79,7 @@ final class FormRenderer {
 				echo '<input class="widefat aksrt-widget-color" type="text" id="' . esc_attr($field_id) . '" name="' . esc_attr($field_name) . '" value="' . esc_attr((string) $value) . '">';
 				break;
 			case 'icon':
-				echo '<div class="aksrt-widget-icon"><i class="' . esc_attr((string) $value) . '" aria-hidden="true"></i><input class="widefat" type="text" id="' . esc_attr($field_id) . '" name="' . esc_attr($field_name) . '" value="' . esc_attr((string) $value) . '" placeholder="fa fas fa-star"></div>';
+				echo aksrt_icon_picker_field($field_name, $field_id, (string) $value);
 				break;
 			case 'link':
 				self::link($widget, $key, is_array($value) ? $value : []);