test(ambilight): [PKG-AMBILIGHT-02] reproduce historical frame and native canvas failures

refactor/tasks.json

@@ -1481,11 +1481,15 @@
         "ENG-03",
         "ENG-05"
       ],
-      "status": "todo",
+      "status": "done",
       "risk": "M",
       "deliverable": "跨域 canvas 失败、零尺寸、暂停、重复 start/stop 和 destroy",
       "acceptance": "旧版本行为可重跑，成功/失败/切源/销毁有必要断言",
-      "evidence": []
+      "evidence": [
+        "changes/2026-09-12-PKG-AMBILIGHT-02-tests.md",
+        "baselines/ambilight-behavior-validation.json",
+        "ambilight-validation.md"
+      ]
     },
     {
       "id": "PKG-AMBILIGHT-03",