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/migrate-level-prefab-bundle.sh

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+#!/usr/bin/env bash
+# 将关卡预制体从 resources 拆到独立 Asset Bundle（level-prefabs），减小 resources 包体积。
+#
+# 用法:
+#   bash tools/migrate-level-prefab-bundle.sh          # 执行迁移
+#   bash tools/migrate-level-prefab-bundle.sh --dry-run
+#
+# 迁移后请在 Cocos Creator 中重新构建 Web，再运行 package-for-project.sh
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+PROJECT_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
+SRC="$PROJECT_DIR/assets/resources/level-prefabs"
+DST="$PROJECT_DIR/assets/bundle-level-prefabs/level-prefabs"
+DRY_RUN=0
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --dry-run) DRY_RUN=1; shift ;;
+    -h|--help)
+      echo "将 assets/resources/level-prefabs 移至 assets/bundle-level-prefabs/level-prefabs"
+      exit 0
+      ;;
+    *) echo "未知参数: $1" >&2; exit 1 ;;
+  esac
+done
+
+if [[ ! -d "$SRC" ]]; then
+  echo "源目录不存在（可能已迁移）: $SRC" >&2
+  exit 0
+fi
+
+PREFAB_COUNT="$(find "$SRC" -maxdepth 1 -name 'Level*.prefab' 2>/dev/null | wc -l | tr -d ' ')"
+echo "==> 待迁移预制体: ${PREFAB_COUNT} 个"
+echo "    $SRC"
+echo " -> $DST"
+
+if [[ "$DRY_RUN" -eq 1 ]]; then
+  echo "（dry-run，未修改文件）"
+  exit 0
+fi
+
+mkdir -p "$PROJECT_DIR/assets/bundle-level-prefabs"
+mkdir -p "$(dirname "$DST")"
+
+if [[ -d "$DST" ]]; then
+  echo "错误: 目标已存在: $DST" >&2
+  echo "若需重新迁移，请先手动删除 bundle-level-prefabs/level-prefabs" >&2
+  exit 1
+fi
+
+mv "$SRC" "$DST"
+rm -f "$PROJECT_DIR/assets/resources/level-prefabs.meta"
+
+# 子目录 meta（Creator 会在下次打开时补全 uuid，此处提供基础结构）
+cat > "$DST.meta" <<'META'
+{
+  "ver": "1.2.0",
+  "importer": "directory",
+  "imported": true,
+  "uuid": "b2c3d4e5-f6a7-8901-bcde-f12345678901",
+  "files": [],
+  "subMetas": {},
+  "userData": {}
+}
+META
+
+echo "==> 迁移完成。下一步:"
+echo "  1. 打开 Cocos Creator，确认 bundle-level-prefabs 显示为 Asset Bundle「level-prefabs」"
+echo "  2. 构建 Web Desktop"
+echo "  3. bash tools/package-for-project.sh"