test(mask): [PKG-MASK-05] checkpoint native model and historical-core coverage

refactor/tasks.json

@@ -2605,11 +2605,15 @@
         "PKG-MASK-04",
         "CORE-22"
       ],
-      "status": "todo",
+      "status": "doing",
       "risk": "H",
       "deliverable": "真实模型和 danmuku/seek/全屏组合，GPU 资源释放",
       "acceptance": "最终核心与原支持范围核心分别通过；设备/SDK 缺证据不能标完成",
-      "evidence": []
+      "evidence": [
+        "changes/2026-09-14-PKG-MASK-05-native-checkpoint.md",
+        "baselines/danmuku-mask-native-validation.json",
+        "baselines/danmuku-mask-historical-cores.json"
+      ]
     },
     {
       "id": "PKG-MASK-06",