Initial commit: Natural Memory Agent Lab：模型服务 + TypeScript agent + 记忆能力场景评测（冲突更新、跨会话回忆、遗忘撤回、多跳、未知拒答）

agent/scenarios/unknown_abstention.json

@@ -0,0 +1,29 @@
+{
+  "id": "unknown_abstention",
+  "description": "只写入一条无关事实，然后询问从未提及的属性。模型必须明确表示不知道，而不是编造或把相似记忆硬当答案。",
+  "sessions": [
+    {
+      "id": "s1",
+      "turns": [
+        "记一下：我的工位在 3 楼东侧。"
+      ]
+    },
+    {
+      "id": "s2",
+      "turns": [
+        "我的血型是什么？如果不知道就直说不知道，不要猜。"
+      ]
+    },
+    {
+      "id": "s3",
+      "turns": [
+        "我上个月去哪出差了？没有记录的话请直接说没有记录。"
+      ]
+    }
+  ],
+  "assertions": [
+    { "type": "answer_contains", "session": "s2", "turn": 0, "any": ["不知道", "没有记录", "无法确认", "未找到", "不清楚"] },
+    { "type": "answer_not_contains", "session": "s2", "turn": 0, "any": ["A 型", "B 型", "O 型", "AB 型"] },
+    { "type": "answer_contains", "session": "s3", "turn": 0, "any": ["没有记录", "不知道", "无法确认", "未找到", "不清楚"] }
+  ]
+}