feat(widgets): replicate 12 reference widgets for full Zibll parity

- rewrite schemas for posts, tab_posts, oneline_posts, hot_posts,
  term_cards, term_aggregation, media_cards, combo_info, partners,
  recent_comments, posts_toc and slider_media_combo to mirror the
  modern reference modules field by field (options, defaults,
  dependencies, min/max/step, subheadings)
- port reference renderers: hot ranking with TOP badges, category
  aggregation card, graphic cover cards, partners CSS marquee,
  combo info cards with auto band palette, recent comment list
- rename 分类与标签聚合卡片 to 分类聚合卡片 and restrict it to
  categories (no tags/topics branch in this project)
- drop topics filter fields and the topics query branch; align
  orderby value domain with supported post meta
- add searchable sortable terms admin field type and spinner unit
  suffix rendering
- unify widget pagination and lazy loading on the REST client with
  the runtime-owned ias reveal trigger; remove the legacy
  post_ajax_trigger dual path
- align section-navs TOC with the reference contract (wznav ids,
  3-heading minimum, zib-widget box)

assets/widgets/admin.css

@@ -197,3 +197,13 @@
   .aksrt-widget-switch span::after { transition: none; }
 }
 
+
+/* terms: searchable multi-select with drag ordering */
+.aksrt-widget-terms .aksrt-widget-terms__selected { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 6px; }
+.aksrt-widget-terms .aksrt-widget-terms__selected:empty { display: none; }
+.aksrt-widget-terms .aksrt-widget-terms__chip { display: inline-flex; align-items: center; gap: 3px; padding: 2px 6px; border-radius: 4px; background: #f0f0f1; border: 1px solid #dcdcde; font-size: 12px; cursor: move; }
+.aksrt-widget-terms .aksrt-widget-terms__chip .dashicons { font-size: 14px; width: 14px; height: 14px; }
+.aksrt-widget-terms .aksrt-widget-terms__remove { border: 0; background: none; cursor: pointer; line-height: 1; padding: 0 0 0 2px; text-decoration: none; }
+.aksrt-widget-terms .aksrt-widget-terms__search { margin-bottom: 6px; }
+.aksrt-widget-terms .aksrt-widget-terms__options { max-height: 180px; overflow-y: auto; border: 1px solid #dcdcde; border-radius: 4px; padding: 4px 8px; background: #fff; }
+.aksrt-widget-terms .aksrt-widget-terms__option { display: block; padding: 2px 0; }