diff --git a/memrelay-manifest.json b/memrelay-manifest.json
index e0400da..1ab3f9b 100644
--- a/memrelay-manifest.json
+++ b/memrelay-manifest.json
@@ -103,6 +103,10 @@
         {
           "kind": "directory",
           "value": "e:/code/nixmsg-wt/t05"
+        },
+        {
+          "kind": "directory",
+          "value": "e:/code/nixmsg-wt/t04"
         }
       ],
       "created_at": "2026-09-29T15:42:27.642284+00:00",
diff --git a/projects/25464650-ed5d-440e-b362-190f2852d451/Checkpoint 2026-09-29 22-36-38 UTC [de7d2eb653].md b/projects/25464650-ed5d-440e-b362-190f2852d451/Checkpoint 2026-09-29 22-36-38 UTC [de7d2eb653].md
new file mode 100644
index 0000000..c8623fc
--- /dev/null
+++ b/projects/25464650-ed5d-440e-b362-190f2852d451/Checkpoint 2026-09-29 22-36-38 UTC [de7d2eb653].md	
@@ -0,0 +1,46 @@
+---
+title: Checkpoint 2026-09-29 22:36:38 UTC [de7d2eb653]
+type: checkpoint
+permalink: main/projects/25464650-ed5d-440e-b362-190f2852d451/checkpoint-2026-09-29-22-36-38-utc-de7d2eb653
+stable_id: c28f8d69-d185-4df0-9803-c4b0c11850f0
+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: t04-checkpoint-20260930-ready
+created_at: '2026-09-29T22:36:38.291116+00:00'
+updated_at: '2026-09-29T22:36:38.291116+00:00'
+tags:
+- t04
+- ready-to-merge
+- line-L
+- feat/t04-contracts
+---
+
+## T0.4 完成（线 L）ready-to-merge
+
+- **分支**：feat/t04-contracts
+- **工作树**：E:/code/NixMsg-wt/t04（toplevel 确认非主工作区）
+- **基于**：origin/main @ dd5a331
+- **提交**：22c56d1 feat: 补齐模块接口契约与管理 API 文档
+- **推送**：origin/feat/t04-contracts（普通推送，未强推，未推 main）
+- **验证**：工作树内 task check 通过（web build、embeddist build、golangci-lint 0、go test 含 auth/app/*/port/wire）
+
+## 交付内容
+- internal/auth：HashPool、SessionTokens、APITokens、LoginLocks + Stub
+- internal/app/message|identity|group|presence：Service 接口 + Stub
+- internal/app/port：UplinkHandler / Downlink / ConnControl（broker↔app，选 app/port）
+- cmd/nixmsg/wire.go 组装假实现；serve 接 RecoverOnStart，version/serve/healthz 不变
+- docs/api/admin-api.md：第 8 节管理路由契约（含 Cookie/X-Nixmsg-Request/Bearer，响应无正文）
+- docs/DEVIATIONS.md 总控 L T0.4 四条
+
+## 契约覆盖路由
+login/logout/me/password/overview/endpoints 列表开通 import batch 详情修改删除 kick reset-login-password talk-password unlock/registration/tokens 全部/groups 全部（含补充 GET 详情）/messages 列表详情/settings
+
+## 没做
+P/N/M/I/A 真实业务；mochi；admin HTTP 实现（仅文档契约）
+
+## 给下个会话
+可 ff-merge feat/t04-contracts；勿改主工作区；勿强推 main
\ No newline at end of file