feat(engine): RunEvent 增 executor 驻地字段（ADR-R6 补记：双端透明调度设计——三条纪律+确定性路由表+数据不动原则）

packages/rpa-core/src/engine/checkpoint-events.test.ts

@@ -87,6 +87,8 @@ describe("A++ 检查点事件负载", () => {
     expect(first.checkpointId).toBe("first");
     expect(first.resumable).toBe(true);
     expect(first.idempotencyKey).toBe("run_cp:first");
+    // 双端透明调度（ADR-R6 补记）：本地执行驻地必须随事件上报，供审计区分
+    expect(first.executor).toBe("local");
 
     const second = finished.find((e) => e.nodeId === "second")!;
     expect(second.checkpointId).toBe("second");

packages/rpa-core/src/engine/runtime.ts

@@ -370,6 +370,7 @@ async function executeNode(node: FlowNode, ctx: RunContext, states: Map<string,
       evidence: state.evidence,
       checkpointId: node.id,
       resumable,
+      executor: "local",
       ...(resumable ? { idempotencyKey: `${ctx.runId}:${node.id}` } : {})
     });
     return result;

packages/rpa-core/src/types.ts

@@ -185,6 +185,8 @@ export interface RunEvent {
   checkpointId?: string;
   idempotencyKey?: string;
   resumable?: boolean;
+  // 双端透明调度（ADR-R6 补记）：本次执行驻地；用户界面不展示，审计/排障必须可见
+  executor?: "local" | "backend";
   startedAt?: string;
   nodeLabel?: string;
   total?: number;