Complete Cocos Creator port with level bundles, themes, and tooling.

Adds level prefabs, theme assets, audio, extensions, and deployment scripts for the Unity WebGL migration.

Co-authored-by: Cursor <cursoragent@cursor.com>

tools/sync-main-site-level-db.sh

@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+# 已弃用：请用 sync-level-db.sh（Cocos 权威）
+# 本脚本转调 Cocos 导出，避免误从 Unity 覆盖地图数据。
+exec "$(cd "$(dirname "$0")" && pwd)/sync-level-db.sh" "$@"