docs: document JobStopped and lease cleanup contract for interrupt

examples/simulator_browser_rpa/README.md

@@ -55,7 +55,7 @@ simulator_browser_rpa/
 | `browser_session.py` | async 系统 Chrome/Edge + launch args；**不在此 goto** |
 | `account_client.py` | **唯一** account-manager subprocess 封装（`pick_web_account`→ensure-web / `release_lease`） |
 | `simulator_playwright.py` | 门户轮询、登录、批量表单、PIN、解析 `batch_id`、截图 |
-| `adapter/simulator_rpa.py` | **薄** adapter：pick 账号、lease、委托 RPA、`finally release_lease` |
+| `adapter/simulator_rpa.py` | **薄** adapter：pick 账号、lease、委托 RPA、`finally` 先 `release_lease` 再关浏览器 |
 | `adapter/mock.py` | 不启浏览器，供 unit/mock/CI |
 | `task_service.py` | async 校验输入 → 选 adapter → `await submit_batch` |
 | `sandbox/demo_app.html` | 可控 DOM；含可选门户门闩 + 原批量提交流程 |