feat(upserver): 保存M2客户端KV迁移至本人统计写检查点

保存独立KV用户服务、固定会话存档与原业务接线，以及C3d资料缓存和C3e本人统计写。
保留原PF/AGG路线、业务公式和时序；榜单读取、好友资料、公告、匹配及首场景闸仍待完成。

验证：ServiceHost两条件各33组646断言；Unity CLI Loop编译0错误269警告。
包含相关方案、评审裁决、测试及状态文档。未操作服务器、正式账号或打包。

CodexOutput/upserver/B3BatchMigration/M2/M2-KV替代范围重申-规则增量hash.json

@@ -0,0 +1,41 @@
+{
+  "date": "2026-09-30T14:18:27.606103+08:00",
+  "reason": "用户重申KV替代原PlayFab功能，纠正默认转服务端的工作归属",
+  "agentsBeforeSha256": "E4A8CD34451F651B7CD9AF8A1ED2E96C0A730CC4138CDCE9A948B53440F8314A",
+  "agentsAfter": {
+    "path": "AGENTS.md",
+    "sha256": "D3FE30FDCBE18B787C4168FCADE644629010DE908BC5C362EDBFF5E0ECE860C0"
+  },
+  "document": {
+    "path": "CodexOutput/upserver/B3BatchMigration/M2/M2-KV替代范围重申与剩余SDK接线集中核查-2026-09-30.md",
+    "sha256": "50C038797FE5BE371E127477154673340DD8EBA7CB35F33B9681FB8E7157B66F"
+  },
+  "readOnlyInputs": [
+    {
+      "path": "Client/Assets/Scripts/Core/KVMgr.cs",
+      "sha256": "D976675D655B12BB5C81E1EAC11A92CAF64C1651BBC58C7FF46AE3ED1AB1A37B"
+    },
+    {
+      "path": "Client/Assets/Scripts/Services/PlayerData/PlayerKVClient.cs",
+      "sha256": "9D2D9FC38A0EE48F2CB0B926BB733621045FE179C5B20E7717B0F975D415D2FE"
+    },
+    {
+      "path": "Client/Assets/Scripts/DataCenter/DataCenter.LeadboardData.cs",
+      "sha256": "0A3F56F258C245196CA2609C62CFEBB97419993E45946CE69474CC819E1C9F2D"
+    },
+    {
+      "path": "Client/Assets/Scripts/Services/FriendService.cs",
+      "sha256": "749ABCF06DD93B94211281479532392FD11D83CA5E413B6648EB04EBB24DD451"
+    },
+    {
+      "path": "Client/Assets/Scripts/Services/UserService.cs",
+      "sha256": "11FF067AEC6AF420308D3CBFB000D5F88F877E9E589C413566F674DFD350D815"
+    },
+    {
+      "path": "Client/Assets/Scripts/Duel/UI/EventFishingDuelPanel.cs",
+      "sha256": "80FA5553606347CF48C4FACE9D05D88F3347E7FB923B73F39565B85016F08D59"
+    }
+  ],
+  "productionChanged": false,
+  "reviewReceived": false
+}