feat(runtime): 全站前端脚本统一接入 AksrtFrontend 全局 DOM 生命周期

- rehydrate.js 新增 boot()/aksrt:ready 事件，支持 boot 后晚注册立即以 init 触发
- aksrt-runtime.js 初始加载改走 AksrtFrontend.boot，tooltip/倒计时注册为组件
- 约 30 个前端脚本（首页、评论、支付、路由、页面叶子、widgets）
  从直接 DOMContentLoaded 迁移为 AksrtFrontend.register，并加幂等标记
- section-navs 依赖改为 aksrt-runtime，保证注册时序
- 清理死代码：删除孤儿 loader.js/main.js 及 runtime/page-navs 遗留副本
- loader.js 移除已迁移模块的 tbquire 路径映射，main.js 相应瘦身
- build-public-assets.mjs 增加 runtime/main.min.js 自动压缩步骤
- 新增 4 个契约测试（homepage-dom/rehydrate-runtime/global-dom-init/
  public-bundle-parity），3 个既有 harness 适配注册表初始化方式

assets/js/auth.js

@@ -8,6 +8,8 @@
   var modal = null;
   var lastModalTrigger = null;
   var qrStates = [];
+  var globalEventsBound = false;
+  var oauthResultChecked = false;
   var oauthErrorMessages = {
     access_denied: '已取消第三方授权',
     cancelled: '已取消第三方授权',
@@ -507,6 +509,17 @@
   }
 
   function initRoot(root) {
+    root = root || document;
+    if (root.nodeType === 1 && root.matches('[data-aksrt-auth]')) {
+      initAuthRoot(root);
+      return;
+    }
+    if (root.querySelectorAll) root.querySelectorAll('[data-aksrt-auth]').forEach(initAuthRoot);
+  }
+
+  function initAuthRoot(root) {
+    if (root.dataset.aksrtAuthInitialized === '1') return;
+    root.dataset.aksrtAuthInitialized = '1';
     root.querySelectorAll('input').forEach(function (input) {
       if (!input.hasAttribute('placeholder')) input.setAttribute('placeholder', ' ');
     });
@@ -662,10 +675,14 @@
     }
   }
 
-  function init() {
-    showOAuthResultToast();
-    document.querySelectorAll('[data-aksrt-auth]').forEach(initRoot);
+  function initGlobal() {
     modal = document.querySelector('[data-auth-modal]');
+    if (!oauthResultChecked) {
+      oauthResultChecked = true;
+      showOAuthResultToast();
+    }
+    if (globalEventsBound) return;
+    globalEventsBound = true;
     document.addEventListener('click', function (event) {
       var trigger = event.target.closest('[data-aksrt-auth-required], .aksrt-login-trigger, #nav-login-btn, .signin-loader, .signup-loader, .qrcode-signin');
       if (!trigger) return;
@@ -673,17 +690,7 @@
       var tab = trigger.classList.contains('signup-loader') ? 'signup' : (trigger.classList.contains('qrcode-signin') ? 'oauth' : 'signin');
       openModal(tab, trigger.dataset.authRedirect || window.location.href, trigger);
     });
-    if (modal) {
-      modal.addEventListener('click', function (event) {
-        if (event.target.closest('[data-auth-close]')) closeModal(true);
-      });
-      document.addEventListener('keydown', handleModalKeydown);
-      if (modal.dataset.auto === '1' && Number(window.localStorage.getItem('aksrtAuthAutoUntil') || 0) < Date.now()) {
-        window.setTimeout(function () {
-          openModal(modal.querySelector('[data-aksrt-auth]').dataset.initialTab || 'signin', window.location.href, null);
-        }, Math.max(1, Number(modal.dataset.autoWait) || 5) * 1000);
-      }
-    }
+    document.addEventListener('keydown', handleModalKeydown);
     document.addEventListener('visibilitychange', function () {
       qrStates.forEach(function (state) {
         if (document.visibilityState !== 'visible') stopQr(state.root);
@@ -692,6 +699,25 @@
     });
   }
 
-  if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', init);
-  else init();
+  function initModal() {
+    if (!modal || modal.dataset.aksrtAuthModalInitialized === '1') return;
+    modal.dataset.aksrtAuthModalInitialized = '1';
+    modal.addEventListener('click', function (event) {
+      if (event.target.closest('[data-auth-close]')) closeModal(true);
+    });
+    if (modal.dataset.auto === '1' && Number(window.localStorage.getItem('aksrtAuthAutoUntil') || 0) < Date.now()) {
+      window.setTimeout(function () {
+        var root = modal.querySelector('[data-aksrt-auth]');
+        if (root) openModal(root.dataset.initialTab || 'signin', window.location.href, null);
+      }, Math.max(1, Number(modal.dataset.autoWait) || 5) * 1000);
+    }
+  }
+
+  if (window.AksrtFrontend && typeof window.AksrtFrontend.register === 'function') {
+    window.AksrtFrontend.register('aksrt-auth', function (root) {
+      initGlobal();
+      initRoot(root);
+      initModal();
+    });
+  }
 }());