diff --git a/cheap-worker/cheap_service_app.py b/cheap-worker/cheap_service_app.py
index d25fa987..fd3e886b 100644
--- a/cheap-worker/cheap_service_app.py
+++ b/cheap-worker/cheap_service_app.py
@@ -414,6 +414,13 @@ def main() -> None:
     host = os.environ.get("CHEAP_SERVICE_HOST", "0.0.0.0")
     port = int(os.environ.get("CHEAP_SERVICE_PORT", "8300"))
     print(f"[cheap-service] 启动 Agent Service:http://{host}:{port}", flush=True)
+
+    # genconfig 热源接线(配置控制面阶段二·步骤4,与 tier2 service/app.py:main 对称):TIER2_GENCONFIG_NACOS=1
+    #   才启用,默认关 = 行为字节不变。工厂自带启用旗判断 + best-effort(失败只告警不抛、不 attach),订阅
+    #   cheap 档 dataId(gen-hot-params-cheap)——与 tier2 各进程各热源,天然不串档(worker.genconfig 注释详解)。
+    from worker import genconfig_nacos  # noqa: PLC0415 —— 惰性 import,默认关时不牵 nacos 依赖
+    genconfig_nacos.build_and_attach_hot_source(tier="cheap")
+
     uvicorn.run(build_cheap_app(), host=host, port=port)
 
 
diff --git a/tier2/gen-worker/service/app.py b/tier2/gen-worker/service/app.py
index 8045081a..ee3fb262 100644
--- a/tier2/gen-worker/service/app.py
+++ b/tier2/gen-worker/service/app.py
@@ -314,6 +314,12 @@ def main() -> None:
         from . import nacos_registry  # noqa: PLC0415 —— 惰性 import,默认关时不牵 nacos 依赖
         nacos_registry.register(host, port)
 
+    # genconfig 热源接线(配置控制面阶段二·步骤4):TIER2_GENCONFIG_NACOS=1 才启用,默认关 = 行为字节不变。
+    #   工厂自带启用旗判断 + best-effort(Nacos 不可达只告警不抛),故此处无条件调、不再包旗;订阅 tier2 档
+    #   dataId(gen-hot-params-tier2),软预算/门阈值经 genconfig 数秒热读、不重启。
+    from worker import genconfig_nacos  # noqa: PLC0415 —— 惰性 import,默认关时不牵 nacos 依赖
+    genconfig_nacos.build_and_attach_hot_source(tier="tier2")
+
     if reload:
         # reload 模式必须传 import 字符串(uvicorn 要能在 worker 子进程重导入);指向本模块的 module-level `app`。
         #   子进程重导入 service.app 时,module-level `app` 只在 TIER2_SERVICE_EAGER_APP=1 时才建——故在此
diff --git a/tier2/gen-worker/worker/genconfig.py b/tier2/gen-worker/worker/genconfig.py
index 192138e1..d9f0974d 100644
--- a/tier2/gen-worker/worker/genconfig.py
+++ b/tier2/gen-worker/worker/genconfig.py
@@ -421,9 +421,11 @@ if __name__ == "__main__":  # pragma: no cover —— 本地自测
     reload()
     os.environ.pop("TIER2_GENCONFIG", None)
     _check("内置默认 model.max_tokens", get("model", "max_tokens", 16000), 16000)
-    _check("内置默认 budget.rmb_hard_limit", get("budget", "rmb_hard_limit", 3.0), 3.0)
+    # 期望值锚当前单源现值(YAML/内置):rmb_hard_limit 裁决 ¥50(0号 spike 占位 3.0 已废)、
+    # writer_max_iters 60(2026-07-04 创始人阈值批 40→60)。改单源必须同步这里,否则自测块先失真。
+    _check("内置默认 budget.rmb_hard_limit", get("budget", "rmb_hard_limit", 3.0), 50.0)
     _check("内置默认 model.thinking_enable(bool)", get("model", "thinking_enable", True), True)
-    _check("内置默认 iteration.writer_max_iters", get("iteration", "writer_max_iters", 40), 40)
+    _check("内置默认 iteration.writer_max_iters", get("iteration", "writer_max_iters", 40), 60)
 
     # ② 调用方 default 兜底:内置默认未登记的 key → 返回 default。
     _check("未登记 key 回落 default", get("model", "不存在的key", 999), 999)
@@ -437,7 +439,7 @@ if __name__ == "__main__":  # pragma: no cover —— 本地自测
     _check("env 覆盖 bool=false", get("model", "thinking_enable", True), False)
     # env 非法值 → 忽略、回落内置默认(不变 None)。
     os.environ["TIER2_GEN__ITERATION__WRITER_MAX_ITERS"] = "abc"
-    _check("env 非法值回落默认", get("iteration", "writer_max_iters", 40), 40)
+    _check("env 非法值回落默认", get("iteration", "writer_max_iters", 40), 60)
     for k in ("TIER2_GEN__ITERATION__WRITER_MAX_ITERS", "TIER2_GEN__BUDGET__RMB_HARD_LIMIT",
               "TIER2_GEN__MODEL__THINKING_ENABLE"):
         os.environ.pop(k, None)
@@ -452,7 +454,7 @@ if __name__ == "__main__":  # pragma: no cover —— 本地自测
         _check("YAML 改值流通 model.max_tokens", get("model", "max_tokens", 16000), 24000)
         _check("YAML 改值流通 budget.rmb_hard_limit", get("budget", "rmb_hard_limit", 3.0), 2.0)
         # YAML 没写的 key 仍回落内置默认(= 现值)。
-        _check("YAML 未写 key 回落内置默认", get("iteration", "writer_max_iters", 40), 40)
+        _check("YAML 未写 key 回落内置默认", get("iteration", "writer_max_iters", 40), 60)
         os.environ.pop("TIER2_GENCONFIG", None)
         os.unlink(tmp_path)
         reload()