diff --git a/memrelay-manifest.json b/memrelay-manifest.json
index cd7fc84..e0400da 100644
--- a/memrelay-manifest.json
+++ b/memrelay-manifest.json
@@ -91,6 +91,18 @@
         {
           "kind": "directory",
           "value": "e:/code/nixmsg-wt/t01"
+        },
+        {
+          "kind": "directory",
+          "value": "e:/code/nixmsg-wt/t02"
+        },
+        {
+          "kind": "directory",
+          "value": "e:/code/nixmsg-wt/t03"
+        },
+        {
+          "kind": "directory",
+          "value": "e:/code/nixmsg-wt/t05"
         }
       ],
       "created_at": "2026-09-29T15:42:27.642284+00:00",
diff --git a/projects/25464650-ed5d-440e-b362-190f2852d451/Checkpoint 2026-09-29 22-00-06 UTC [0a3e2dc9c1].md b/projects/25464650-ed5d-440e-b362-190f2852d451/Checkpoint 2026-09-29 22-00-06 UTC [0a3e2dc9c1].md
new file mode 100644
index 0000000..3438e6b
--- /dev/null
+++ b/projects/25464650-ed5d-440e-b362-190f2852d451/Checkpoint 2026-09-29 22-00-06 UTC [0a3e2dc9c1].md	
@@ -0,0 +1,54 @@
+---
+title: Checkpoint 2026-09-29 22:00:06 UTC [0a3e2dc9c1]
+type: checkpoint
+permalink: main/projects/25464650-ed5d-440e-b362-190f2852d451/checkpoint-2026-09-29-22-00-06-utc-0a3e2dc9c1
+stable_id: ef3be336-00c6-40d7-ae47-77e7994e5e93
+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: nixmsg-t03-checkpoint-20260930-l
+created_at: '2026-09-29T22:00:06.111132+00:00'
+updated_at: '2026-09-29T22:00:06.111132+00:00'
+tags:
+- t03
+- ready-to-merge
+- line-L
+- feat/t03-store
+---
+
+## T0.3 完成（线 L）
+
+- **任务**：T0.3 internal/store（迁移、建表、写入队列接口）
+- **分支**：feat/t03-store
+- **工作树**：E:/code/NixMsg-wt/t03（toplevel 确认不是主工作区）
+- **基于**：origin/main @ 86dc10a
+- **提交**：33db3e7 feat: 实现 SQLite 迁移备份、完整表结构与简单写入队列
+- **已推送**：origin/feat/t03-store（普通推送，未推 main、未强推）
+
+### 关键实现
+- 保留 0001=SELECT 1；新增 0002_schema.sql（DEVELOPMENT 7.7 全部业务表/索引，含 api_tokens、settings、session_*）
+- Migrate：有 pending 且打开前已有 nixmsg.db 时 VACUUM INTO data_dir/backup/pre-migrate-<UTC>.db；失败返回错误
+- Open：写连接 DSN+_txlock=immediate MaxOpenConns(1)；读池去掉 _txlock；Queue 简单互斥一操作一事务
+- serve 改为 store.Open，保留 /healthz 与 listen.addr
+
+### 验证
+- task check 通过（web build、embeddist build、golangci-lint 0 issues、go test 全绿）
+- 单测：空目录建表、重复启动不重迁、旧库遇新版本有备份、Queue 写入可读
+
+### 偏差（docs/DEVIATIONS.md 总控 L / T0.3）
+1. 表在 0002 不改 0001
+2. Queue 互斥一事务，合并留给 P2
+3. 空库不备份；失败不自动还原
+
+### 未做
+- 写入合并（P2）
+- 7.8 启动恢复逻辑（属后续消息/平台任务，本任务未做）
+- 未改 go.mod（无新依赖）
+
+### 给下个会话
+- 复用工作树 E:/code/NixMsg-wt/t03 与分支 feat/t03-store
+- 总控审核后 ff-merge；勿在 e:/code/NixMsg 主工作区改
+- schema_migrations 由执行器维护，不在 0002 内
\ No newline at end of file