test: 補 HookBus 與 audit 寫入的 integration 回歸網（PR-I）

HookBusIntegrationTest（14 tests，自 A 移植）
  integration bootstrap 原本只載入 hook-bus-bridge、沒載入 hook-bus 本體，
  所以連 WPDO_Hook_Bus alias 都建不出來 — 一併補 auto-promoter 與 hook-bus。

AuditLoggerIntegrationTest（4 tests，新寫）
  直接鎖住上一個 commit 修掉的 fatal：
  - after_write 必須寫出一列 audit（覆蓋 Logger::trace_id() 缺失）
  - group_name / action 兩欄必須有值（SCHEMA_VERSION 2.1.0 新增）
  - trace_id 必須是 UUIDv4 且同一 request 內共用
  - 未註冊的 key 不得寫入
  tearDownAfterClass 卸掉 listener 而非 drop 表，否則後續測試類的受管寫入
  會打到不存在的表；integration bootstrap 連帶補 remove_action() stub。

註：TermCommentBackfillTest 未移植 — 它 require HP AddOn 的
class-*-hivepress-term-comment-fields.php，屬 HP AddOn 測試套件而非核心。

unit 451 / integration 416 GREEN、PHPCS 0/0

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TbG1keQQ7XBa7qMQY16KCY

tests/integration/bootstrap.php

@@ -257,6 +257,11 @@ if ( ! function_exists( 'remove_filter' ) ) {
 		return true;
 	}
 }
+if ( ! function_exists( 'remove_action' ) ) {
+	function remove_action( string $hook, $cb, int $p = 10 ): bool {
+		return remove_filter( $hook, $cb, $p );
+	}
+}
 if ( ! function_exists( 'apply_filters' ) ) {
 	function apply_filters( string $hook, $value, ...$args ) {
 		foreach ( $GLOBALS['_wp_filter_callbacks'][ $hook ] ?? [] as $cb ) {
@@ -570,6 +575,8 @@ require_once TMDO_PATH . 'includes/engine/class-tmdo-schema-manager.php';
 require_once TMDO_PATH . 'includes/engine/class-tmdo-entity-registry.php';
 require_once TMDO_PATH . 'includes/engine/class-tmdo-entity-migration-engine.php';
 require_once TMDO_PATH . 'includes/engine/class-tmdo-entity-health.php';
+require_once TMDO_PATH . 'includes/engine/class-tmdo-auto-promoter.php';
+require_once TMDO_PATH . 'includes/engine/class-tmdo-hook-bus.php';
 require_once TMDO_PATH . 'includes/adapters/interface-entity-adapter.php';
 require_once TMDO_PATH . 'includes/adapters/class-tmdo-adapter-post.php';
 require_once TMDO_PATH . 'includes/adapters/class-tmdo-adapter-user.php';