diff --git a/config/agentrun.yaml b/config/agentrun.yaml
index 9d1c6bd7..6b0e3aec 100644
--- a/config/agentrun.yaml
+++ b/config/agentrun.yaml
@@ -51,7 +51,7 @@ client:
 controlPlane:
   default:
     node: NC01
-    lane: nc01-v02
+    lane: nc01-release
   nodes:
     NC01:
       route: NC01
diff --git a/docs/reference/agentrun.md b/docs/reference/agentrun.md
index a72192b7..1c220000 100644
--- a/docs/reference/agentrun.md
+++ b/docs/reference/agentrun.md
@@ -272,6 +272,7 @@ Artificer 标题契约：
 - 标题重复时返回歧义错误，内部 ID 继续作为不可变机器身份。
 
 - 默认直接执行 live 单命令，不把 `--dry-run` 作为派单前置步骤；
+- 未显式传 `--lane` 时，空选择或只传 YAML 默认 node 都使用 `config/agentrun.yaml#controlPlane.default`；
 - live 先经 Target `trans` 重入并执行 source/worktree/Aipod/SecretRef 只读预检；
 - 预检通过后在同一命令内 submit 并自动 dispatch；
 - 幂等重试不得重复创建 attempt 或重复 dispatch；
diff --git a/scripts/src/agentrun-lanes.ts b/scripts/src/agentrun-lanes.ts
index dbfc0828..fbe99cf8 100644
--- a/scripts/src/agentrun-lanes.ts
+++ b/scripts/src/agentrun-lanes.ts
@@ -393,6 +393,12 @@ export function resolveAgentRunLaneTarget(options: { node?: string | null; lane?
     return { configPath: config.sourcePath, spec };
   }
   if (requestedNode !== null) {
+    if (requestedNode === config.defaultTarget.node) {
+      const spec = config.lanes[config.defaultTarget.lane];
+      if (spec === undefined) throw new Error(`${config.sourcePath}: default controlPlane lane ${config.defaultTarget.lane} is not declared`);
+      if (spec.nodeId !== requestedNode) throw new Error(`${config.sourcePath}: controlPlane.default.node does not match default lane node`);
+      return { configPath: config.sourcePath, spec };
+    }
     const candidates = Object.values(config.lanes).filter((lane) => lane.nodeId === requestedNode);
     if (candidates.length === 0) throw new Error(`${config.sourcePath}: no AgentRun lane is declared for node ${requestedNode}`);
     if (candidates.length > 1) throw new Error(`--lane is required because node ${requestedNode} has multiple AgentRun lanes: ${candidates.map((lane) => lane.lane).join(", ")}`);