fix(service-job): use explicit .js extensions for nodenext module resolution

The package's dts build runs under moduleResolution nodenext — relative
imports of run-with-policy must carry the .js extension.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: os-zhuang

packages/services/service-job/src/cron-job-adapter.ts

@@ -8,7 +8,7 @@ import type {
   JobExecution,
   JobScheduleOptions,
 } from '@objectstack/spec/contracts';
-import { runWithPolicy, JobTimeoutError } from './run-with-policy';
+import { runWithPolicy, JobTimeoutError } from './run-with-policy.js';
 
 /** Minimal cluster lock surface for scheduler leader-election (structural — no hard dep on the cluster contract). */
 interface SchedulerCluster {

packages/services/service-job/src/interval-job-adapter.ts

@@ -1,7 +1,7 @@
 // Copyright (c) 2025 ObjectStack. Licensed under the Apache-2.0 license.
 
 import type { IJobService, JobSchedule, JobHandler, JobExecution, JobScheduleOptions } from '@objectstack/spec/contracts';
-import { runWithPolicy, JobTimeoutError } from './run-with-policy';
+import { runWithPolicy, JobTimeoutError } from './run-with-policy.js';
 
 /**
  * Internal record for a scheduled job.