Natural Memory NM2.1: 记忆路由器分叉、数据集缺陷修复与全轴评测证据

- 引入 MemoryRouterXL 与 v5/v6 流式多线程训练/编码管线
- 修复 prepare_memory_router_dataset 候选池重建缺陷（mega 家族 3568x 加速，输出逐字节相同）
- 修复 v5 被破坏的拒答与多跳标签（train 未知样本 319 -> 16319，multi_hop 平均正例 1.00 -> 2.00）
- 同存储预算下 V2-128 v6 逐轴 22/22 通过：Top-1 41.12% -> 94.62%，未知拒答 0.00% -> 100.00%
- 记录三条被实测推翻的显然优化（logits_to_keep=1 反而慢 55%、XL 容量未带来收益）
- 记忆手术跨架构可移植性 14/14，读写关闭时与原生模型逐位相同

data/realistic_v2/eval.manifest.json

@@ -0,0 +1,76 @@
+{
+  "generator": "make_realistic_memory_data.py",
+  "split": "eval",
+  "episodes": 200,
+  "per_category": 25,
+  "seed": 20260914,
+  "sha256": "b5e4d771e1bbd4d30048b7c545c2d77b68728f0f34506c5964374e8170d3b1bd",
+  "categories": {
+    "multi_entity": 25,
+    "alias_paraphrase": 25,
+    "update_conflict": 25,
+    "multi_hop": 25,
+    "near_miss": 25,
+    "noise_context": 25,
+    "long_fact": 25,
+    "unknown_attribute": 25
+  },
+  "attribute_families": [
+    "主库地址",
+    "仓库库位",
+    "代码仓库",
+    "供应商",
+    "保险到期",
+    "值班电话",
+    "值班表",
+    "发布窗口",
+    "合同编号",
+    "告警阈值",
+    "周会时间",
+    "培训周期"
+  ],
+  "disjointness": {
+    "train_families": [
+      "备份周期",
+      "审批人",
+      "客户等级",
+      "对接端口",
+      "对账日",
+      "常驻机房",
+      "应急联系人",
+      "开源协议",
+      "接口版本号",
+      "日志保留",
+      "样机编号",
+      "灰度比例",
+      "监控面板",
+      "结算币种",
+      "续约提醒",
+      "缓存容量",
+      "证书到期日",
+      "质检标准",
+      "运输方式",
+      "返修地址",
+      "镜像标签",
+      "限流上限",
+      "预算上限",
+      "风速上限"
+    ],
+    "eval_families": [
+      "主库地址",
+      "仓库库位",
+      "代码仓库",
+      "供应商",
+      "保险到期",
+      "值班电话",
+      "值班表",
+      "发布窗口",
+      "合同编号",
+      "告警阈值",
+      "周会时间",
+      "培训周期"
+    ],
+    "overlap": []
+  },
+  "note": "eval families never appear in training, so eval results measure generalisation to unseen attribute wording"
+}