diff --git a/memrelay-manifest.json b/memrelay-manifest.json
index 1ab3f9b..3f53748 100644
--- a/memrelay-manifest.json
+++ b/memrelay-manifest.json
@@ -107,6 +107,26 @@
         {
           "kind": "directory",
           "value": "e:/code/nixmsg-wt/t04"
+        },
+        {
+          "kind": "directory",
+          "value": "e:/code/nixmsg-wt/p"
+        },
+        {
+          "kind": "directory",
+          "value": "e:/code/nixmsg-wt/m"
+        },
+        {
+          "kind": "directory",
+          "value": "e:/code/nixmsg-wt/w"
+        },
+        {
+          "kind": "directory",
+          "value": "e:/code/nixmsg-wt/s1"
+        },
+        {
+          "kind": "directory",
+          "value": "e:/code/nixmsg-wt/s2"
         }
       ],
       "created_at": "2026-09-29T15:42:27.642284+00:00",
diff --git a/projects/25464650-ed5d-440e-b362-190f2852d451/Checkpoint 2026-09-29 22-47-58 UTC [99329660b1].md b/projects/25464650-ed5d-440e-b362-190f2852d451/Checkpoint 2026-09-29 22-47-58 UTC [99329660b1].md
new file mode 100644
index 0000000..ba52b5f
--- /dev/null
+++ b/projects/25464650-ed5d-440e-b362-190f2852d451/Checkpoint 2026-09-29 22-47-58 UTC [99329660b1].md	
@@ -0,0 +1,51 @@
+---
+title: Checkpoint 2026-09-29 22:47:58 UTC [99329660b1]
+type: checkpoint
+permalink: main/projects/25464650-ed5d-440e-b362-190f2852d451/checkpoint-2026-09-29-22-47-58-utc-99329660b1
+stable_id: ff8132b0-d7c6-429a-998e-dc3ebc8645ab
+scope: project
+memory_type: checkpoint
+project_id: 25464650-ed5d-440e-b362-190f2852d451
+usage_profile_id: 0c9feb46-d06e-43cd-9ef0-c5813c84a998
+status: active
+revision: 1
+request_id: i1-register-ready-20260930-064800
+created_at: '2026-09-29T22:47:58.818501+00:00'
+updated_at: '2026-09-29T22:47:58.818501+00:00'
+tags:
+- ready-to-merge
+- i1
+- line-I
+- feat/i1-register
+---
+
+# 检查点：I1 注册接口 ready-to-merge
+
+## 完成内容
+- 实现 `POST /api/client/register` 为可挂载 `http.Handler`（`identity.NewRegisterHandler` / `NewServer().Handler()`）。
+- 覆盖 DEVELOPMENT 6.9：开关、安全码常量时间比较、IP 锁定、CORS/OPTIONS、4KiB 体、字段规则、`source=self`、日志不含安全码/密码。
+- httptest + 临时 SQLite 覆盖 F23 验收；`task check` 通过。
+- 写 `docs/DEVIATIONS.md`「身份 I」五条。未改 PRD、cmd、listener。
+
+## 分支 / 路径 / 提交
+- 分支：`feat/i1-register`（已推送 origin，未推 main）
+- 工作树：`E:/code/NixMsg-wt/i`（基于 origin/main `22c56d1`）
+- 提交：`3f6f942` feat: 实现端自助注册 HTTP 接口与 F23 验收测试
+
+## 挂载方式
+```go
+mux.Handle("/api/client/register", identity.NewRegisterHandler(identity.RegisterConfig{
+  DB: db, Hash: hashPool, Locks: loginLocks, // P3 实现
+}))
+```
+
+## 验证
+- `task check`：web build、embeddist、golangci-lint 0、go test ./... 含 identity F23
+
+## 没做完
+- 未接线到 cmd/listener（等 N/总控）
+- 依赖 P3 真实 HashPool/LoginLocks；测试用 StubHashPool + 测试用 register IP 锁定器
+- I2–I5 未做；trusted_proxies IP 由接线注入 ClientIP
+
+## 给下个会话
+- 可 rebase origin/main 后由总控 ff-merge；勿强推 main；勿改主工作区 e:/code/NixMsg
\ No newline at end of file