feat(nav): deep-align menu_search panel, pill radius, senior media

- Layout-2 remote-box AJAX panel (history/hot/posts) via aksrt_menu_search
- Live suggestions for post/topic/product; local history for guests
- Publish radius switch (zibll bool pill) mapped to CSS radius class
- Senior menu editor: WP media library image picker
- Active menu underline + panel CSS; acceptance/contract updates

assets/js/admin-nav-menu-senior.js

@@ -39,11 +39,15 @@
     };
   }
 
-  function field(name, label, value, type) {
+  function field(name, label, value, type, withMedia) {
     type = type || 'text';
+    var mediaBtn = withMedia
+      ? ' <button type="button" class="button aksrt-sme-pick-img" data-for="' + name + '">选择图片</button>'
+      : '';
     return (
       '<label class="aksrt-sme-field"><span>' +
       label +
+      mediaBtn +
       '</span><input type="' +
       type +
       '" data-name="' +
@@ -62,7 +66,7 @@
       html += '<div class="aksrt-sme-card" data-index="' + i + '">';
       html += '<div class="aksrt-sme-card-head"><strong>卡片 #' + (i + 1) + '</strong>';
       html += ' <button type="button" class="button-link-delete aksrt-sme-del-card">删除</button></div>';
-      html += field('img', '图片 URL', item.img || '');
+      html += field('img', '图片 URL', item.img || '', 'text', true);
       html += field('title', '标题', item.title || '');
       html += field('badge', '徽章', item.badge || '');
       html += field('badge_class', '徽章 class', item.badge_class || '');
@@ -236,6 +240,24 @@
     });
   }
 
+  
+  $(document).on('click', '.aksrt-sme-pick-img', function (e) {
+    e.preventDefault();
+    var $btn = $(this);
+    var name = $btn.data('for');
+    var $input = $btn.closest('.aksrt-sme-field').find('input[data-name="' + name + '"]');
+    if (typeof wp === 'undefined' || !wp.media) {
+      window.alert('媒体库不可用');
+      return;
+    }
+    var frame = wp.media({ title: '选择图片', button: { text: '使用此图' }, multiple: false, library: { type: 'image' } });
+    frame.on('select', function () {
+      var att = frame.state().get('selection').first().toJSON();
+      if (att && att.url) $input.val(att.url).trigger('change');
+    });
+    frame.open();
+  });
+
   $(boot);
   $(document).on('menu-item-added', function () {
     setTimeout(boot, 50);