同步主站 Cocos 当前工程：关卡资源、运行脚本与打包工具。

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

tools/export_all_levels.py

@@ -106,10 +106,9 @@ def merge_prefab_maps(L: dict, prefab_dir: Path) -> None:
         L["_mapSource"] = "boundary_ring"
         return
     maps = parse_level_prefab(p)
-    if maps.get("ground"):
-        L["ground"] = maps["ground"]
-    if maps.get("border"):
-        L["border"] = maps["border"]
+    # 空边框也要写回，避免旧 JSON 里的 WallBlock 残留
+    L["ground"] = maps.get("ground") or {}
+    L["border"] = maps.get("border") or {}
     L["_mapSource"] = "unity_prefab"
 
 
@@ -123,10 +122,8 @@ def strip_internal(L: dict) -> dict:
         out["unityPrefab"] = L["unityPrefab"]
     if L.get("cocosPrefab"):
         out["cocosPrefab"] = L["cocosPrefab"]
-    if L.get("ground"):
-        out["ground"] = L["ground"]
-    if L.get("border"):
-        out["border"] = L["border"]
+    out["ground"] = L.get("ground") or {}
+    out["border"] = L.get("border") or {}
     if L.get("theme"):
         out["theme"] = L["theme"]
     return out