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/css/frontend/nav/zib-utilities.css

@@ -162,3 +162,61 @@ body.mobile-navbar-show { overflow: hidden; }
 .aksrt-sme-field { display: block; margin: 4px 0; }
 .aksrt-sme-field span { display: block; font-size: 12px; color: #646970; }
 .aksrt-sme-card, .aksrt-sme-col { border: 1px solid #dcdcde; padding: 8px; margin: 8px 0; border-radius: 4px; }
+
+/* Layout-2 remote menu search panel (zibll menu_search) */
+.aksrt-remote-box[data-aksrt-menu-search-remote] {
+  min-height: 8px;
+}
+.navbar-inline-search-panel {
+  min-width: 300px;
+  max-width: 380px;
+  max-height: 70vh;
+  overflow: auto;
+}
+.aksrt-menu-search-posts__item {
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+  padding: 6px 2px;
+  color: inherit;
+  text-decoration: none;
+  border-bottom: 1px solid rgba(0,0,0,.04);
+}
+.aksrt-menu-search-posts__item:last-child { border-bottom: 0; }
+.aksrt-menu-search-posts__item:hover { color: var(--focus-color); }
+.aksrt-menu-search-history__list .but,
+.navbar-inline-search-hots .but { margin: 0 4px 4px 0; }
+.loading-spot {
+  display: inline-block;
+  width: 1em;
+  height: 1em;
+  margin: 8px;
+  border: 2px solid rgba(0,0,0,.15);
+  border-top-color: var(--focus-color, #f04494);
+  border-radius: 50%;
+  animation: aksrt-spin .7s linear infinite;
+}
+@keyframes aksrt-spin { to { transform: rotate(360deg); } }
+.navbar-but .radius,
+.navbar-but .but.radius,
+.navbar-cta.radius {
+  border-radius: 999px !important;
+}
+
+/* Active menu underline (zibll-like) */
+.navbar-top .nav > li.current-menu-item > a,
+.navbar-top .nav > li.current-menu-ancestor > a {
+  color: var(--focus-color);
+}
+.navbar-top .nav > li.current-menu-item > a::before,
+.navbar-top .nav > li.current-menu-ancestor > a::before {
+  content: "";
+  position: absolute;
+  left: 10px;
+  right: 10px;
+  top: 0;
+  height: 3px;
+  border-radius: 0 0 3px 3px;
+  background: var(--focus-color);
+}
+.navbar-top .nav > li > a { position: relative; }