diff --git a/cheap-worker/worker_service.py b/cheap-worker/worker_service.py
index d56fb622..5b627842 100644
--- a/cheap-worker/worker_service.py
+++ b/cheap-worker/worker_service.py
@@ -138,6 +138,9 @@ def _default_run_fn(job: dict):
     import cheap_studio
 
     game_id = job.get("gameId") or job.get("job_id")
+    # 真后端来的 gameId 是 Java Long → JSON 数字 → Python int；cheap_run 的 subprocess shell-out（scaffold/build/stage/smoke/play）
+    #   与路径段都要求 str，int 会抛 TypeError(expected str, not int) → 生成静默判 llm_error。此处在 job 消费边界统一归一为 str。
+    game_id = str(game_id) if game_id is not None else None
     brief = job.get("brief") or ""
     summary = asyncio.run(cheap_studio.run_studio(game_id, brief))
     return summary, cheap_run.game_dir(game_id)
@@ -257,6 +260,9 @@ def _process_modify_job(state: WorkerState, job: dict, modify: dict) -> dict:
     trace_id = job.get("traceId") or job.get("job_id")
     mode = modify.get("mode")
     game_id = job.get("gameId") or job.get("job_id")
+    # 真后端来的 gameId 是 Java Long → JSON 数字 → Python int；cheap_run 的 subprocess shell-out（scaffold/build/stage/smoke/play）
+    #   与路径段都要求 str，int 会抛 TypeError(expected str, not int) → 生成静默判 llm_error。此处在 job 消费边界统一归一为 str。
+    game_id = str(game_id) if game_id is not None else None
 
     # A11 M4:模块重生成(改玩法)分流——有界单文件重写 game-logic.js,复用 cheap_studio resume + 三层校验。
     if mode == "regenerate-module":
@@ -346,6 +352,9 @@ def _process_regenerate_job(state: WorkerState, job: dict, modify: dict) -> dict
     """
     trace_id = job.get("traceId") or job.get("job_id")
     game_id = job.get("gameId") or job.get("job_id")
+    # 真后端来的 gameId 是 Java Long → JSON 数字 → Python int；cheap_run 的 subprocess shell-out（scaffold/build/stage/smoke/play）
+    #   与路径段都要求 str，int 会抛 TypeError(expected str, not int) → 生成静默判 llm_error。此处在 job 消费边界统一归一为 str。
+    game_id = str(game_id) if game_id is not None else None
 
     import cheap_run