feat(ppclock): batch JSONL 批量执行（单连接），104 测试全绿

tests/test_cli.py

@@ -165,3 +165,29 @@ class TestCommands:
         assert code == 0
         t = FakeTransport.instances[0]
         assert len(t.epd_writes) == 63 + 63 + 1  # 默认三色双平面
+
+
+class TestBatch:
+    def test_batch_jsonl(self, capsys, tmp_path):
+        f = tmp_path / "job.jsonl"
+        f.write_text(
+            '{"argv": ["mode", "clock1"]}\n'
+            '{"argv": ["parking", "12"]}\n'
+            '{"argv": ["countdown"]}\n'  # 故意错误行
+        )
+        code, out = run_cli(capsys, ["--json", "batch", str(f)])
+        assert code == 0
+        results = out["data"]["results"]
+        assert [r["ok"] for r in results] == [True, True, False]
+        # 单连接：只有1个 transport 实例
+        assert len(FakeTransport.instances) == 1
+
+    def test_batch_stop_on_error(self, capsys, tmp_path):
+        f = tmp_path / "job.jsonl"
+        f.write_text(
+            '{"argv": ["countdown"]}\n'
+            '{"argv": ["mode", "clock1"]}\n'
+        )
+        code, out = run_cli(capsys, ["--json", "batch", str(f), "--stop-on-error"])
+        results = out["data"]["results"]
+        assert len(results) == 1 and results[0]["ok"] is False