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/rehydrate.js

@@ -6,8 +6,9 @@
  * to initialize or re-initialize them on a given root element.
  *
  * Usage:
- *   AksrtFrontend.register('name', initFn);   // Register a component
- *   AksrtFrontend.rehydrate(root, 'init');     // Initialize all components
+ *   AksrtFrontend.register('name', initFn);  // Register a component
+ *   AksrtFrontend.boot(document);            // One-time initial page load
+ *   AksrtFrontend.rehydrate(root, 'ajax');    // Initialize dynamic content
  *
  * @package AKSRT
  * @since   5.0.0
@@ -16,7 +17,25 @@
   'use strict';
 
   var _registry = [];
-  var _initialized = [];
+  var _booted = false;
+  var _bootRoot = null;
+
+  function invoke(entry, root, reason) {
+    try {
+      entry.initFn(root, reason);
+    } catch (err) {
+      console.error('[AKSRT Rehydrate] Error initializing "' + entry.name + '":', err);
+    }
+  }
+
+  function dispatch(root, reason, eventName) {
+    try {
+      root.dispatchEvent(new CustomEvent(eventName, {
+        bubbles: true,
+        detail: { reason: reason }
+      }));
+    } catch (e) { /* IE fallback */ }
+  }
 
   window.AksrtFrontend = {
 
@@ -32,10 +51,26 @@
       for (var i = 0; i < _registry.length; i++) {
         if (_registry[i].name === name) {
           _registry[i].initFn = initFn;
+          if (_booted) invoke(_registry[i], _bootRoot || document, 'init');
           return;
         }
       }
-      _registry.push({ name: name, initFn: initFn });
+      var entry = { name: name, initFn: initFn };
+      _registry.push(entry);
+      if (_booted) invoke(entry, _bootRoot || document, 'init');
+    },
+
+    /**
+     * Run the one-time initial page boot.
+     *
+     * @param {Element|Document} root The document root to initialize
+     */
+    boot: function (root) {
+      if (_booted) return;
+      _booted = true;
+      _bootRoot = root || document;
+      this.rehydrate(_bootRoot, 'init');
+      dispatch(_bootRoot, 'init', 'aksrt:ready');
     },
 
     /**
@@ -53,21 +88,10 @@
       reason = reason || 'init';
 
       for (var i = 0; i < _registry.length; i++) {
-        var entry = _registry[i];
-        try {
-          entry.initFn(root, reason);
-        } catch (err) {
-          console.error('[AKSRT Rehydrate] Error initializing "' + entry.name + '":', err);
-        }
+        invoke(_registry[i], root, reason);
       }
 
-      // Dispatch event so external scripts can hook in
-      try {
-        root.dispatchEvent(new CustomEvent('aksrt:rehydrated', {
-          bubbles: true,
-          detail: { reason: reason }
-        }));
-      } catch (e) { /* IE fallback */ }
+      dispatch(root, reason, 'aksrt:rehydrated');
     },
 
     /**
@@ -75,6 +99,10 @@
      */
     getRegistered: function () {
       return _registry.map(function (r) { return r.name; });
+    },
+
+    isBooted: function () {
+      return _booted;
     }
   };