fix(runtime): 按参考主题硬切换为 loader/main/auto_fun 单一 DOM 生命周期

- 删除 AksrtFrontend registry/rehydrate 双路架构及 build/public.js 拼包入口，
  前台唯一初始路径为 PHP 本地栈（jQuery 1.9.1 → Bootstrap 3.4.1）
  → loader_js（_win/aksrtData 唯一注入）→ tbquire(['main']) → runtime/main.min.js
- window.auto_fun = debounce(z_auto_fun, 100) 为唯一重扫入口；所有模块改为
  执行一次 + off/on('auto_fun.aksrt-*') 命名空间重扫，data/class 标记幂等
- 局部更新协议统一：HTML 注入 → post_ajax.ed → auto_fun()；
  远程 modal → loaded.bs.modal → auto_fun()；JSON 成功 → zib_ajax.success
- 灯箱恢复 Miniimgbox/imgbox 唯一 owner（imgbox-container、a[data-imgbox]、
  imgbox_data），删除 AksrtLightbox/data-aksrt-lightbox 第二实现及 CSS/overlay，
  _win.imgbox* 重新接上 post-display 设置
- 死代码清理：runtime 下 11 组被自有实现替代的旧模块副本、无消费 vendored 库、
  顶层 grade.min.js、revenue.js、无调用方的 aksrt_get_win_runtime_config()，
  以及 loader 中 16 条死 mapping
- PHP 入队改为本地栈 + loader_js，routed/widget/submit 依赖统一换绑；
  用户卡片发布按钮恢复 nav_user_newposts_btn 设置门控
- 测试对齐：新增 frontend-lifecycle-contract，重写 navigation/lazyload/toast/
  auth-source/comment/page-display/post-visual 等断言为目标架构契约

验证：node --test widget-system+navigation 223 通过 0 失败；
构建脚本重建 main/imgbox min 与 CSS bundles；改动 PHP php -l、JS node --check
全部通过；git diff --check 干净；credits 重入 harness 通过。

assets/widgets/frontend.js

@@ -166,7 +166,7 @@
         }
         if (data.paginate_html) container.insertAdjacentHTML('beforeend', data.paginate_html);
         container.dataset.page = String(data.page || page);
-        window.AksrtFrontend.rehydrate(container, 'ajax');
+        scan(container);
       })
       .catch(function () { container.innerHTML = errorMarkup(); })
 			.finally(function () {
@@ -262,28 +262,31 @@
     requestAnimationFrame(frame);
   }
 
-  function elementsIn(root, selector) {
-    var scope = root || document;
-    var elements = [];
-    if (scope.matches && scope.matches(selector)) elements.push(scope);
-    if (scope.querySelectorAll) {
-      scope.querySelectorAll(selector).forEach(function (element) { elements.push(element); });
-    }
-    return elements;
-  }
-
   function scan(root) {
     var scope = root || document;
-    elementsIn(scope, '.aksrt-widget-video[data-video-url]').forEach(initVideo);
-    elementsIn(scope, '.aksrt-widget-toc').forEach(initToc);
-    elementsIn(scope, '.aksrt-widget-quote').forEach(initQuote);
-    elementsIn(scope, '[data-widget-items]').forEach(initItems);
-    elementsIn(scope, '.aksrt-widget-tabs, .widget-tab-post').forEach(initTabs);
-    elementsIn(scope, '.aksrt-faq').forEach(initFaq);
-    elementsIn(scope, '.aksrt-feature-intro').forEach(initFeatures);
-    elementsIn(scope, '[data-count-up]').forEach(initCount);
-    if (typeof window.VanillaTilt !== 'undefined') elementsIn(scope, '[data-aksrt-tilt]').forEach(function (el) { if (once(el, 'Tilt')) window.VanillaTilt.init(el); });
+    scope.querySelectorAll('.aksrt-widget-video[data-video-url]').forEach(initVideo);
+    scope.querySelectorAll('.aksrt-widget-toc').forEach(initToc);
+    scope.querySelectorAll('.aksrt-widget-quote').forEach(initQuote);
+    scope.querySelectorAll('[data-widget-items]').forEach(initItems);
+    scope.querySelectorAll('.aksrt-widget-tabs, .widget-tab-post').forEach(initTabs);
+    scope.querySelectorAll('.aksrt-faq').forEach(initFaq);
+    scope.querySelectorAll('.aksrt-feature-intro').forEach(initFeatures);
+    scope.querySelectorAll('[data-count-up]').forEach(initCount);
+    if (typeof window.VanillaTilt !== 'undefined') scope.querySelectorAll('[data-aksrt-tilt]').forEach(function (el) { if (once(el, 'Tilt')) window.VanillaTilt.init(el); });
   }
 
-  window.AksrtFrontend.register('aksrt-widgets', scan);
+  function ready() {
+    scan(document);
+    if ('MutationObserver' in window) {
+      new MutationObserver(function (mutations) {
+        mutations.forEach(function (mutation) { mutation.addedNodes.forEach(function (node) { if (node.nodeType === 1) scan(node); }); });
+      }).observe(document.body, { childList: true, subtree: true });
+    }
+  }
+
+  if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', ready);
+  else ready();
+
+  // AJAX 注入新内容后由 auto_fun 重扫（once() data 标记保证幂等）。
+  if (window.jQuery) window.jQuery(document).on('auto_fun', function () { scan(document); });
 })();