From de8e6f2391c65eb81edece5c27149a85f20a9011 Mon Sep 17 00:00:00 2001
From: MemRelay <memrelay@gmail.com>
Date: Wed, 30 Sep 2026 06:01:23 +0800
Subject: [PATCH] create: Checkpoint 2026-09-29 22:01:20 UTC [b12c120b2c]

MemRelay-Operation: checkpoint-save:t02-checkpoint-20260930-ready
MemRelay-Resource: e7becf00-932c-44df-a1ad-ba9c4d07f1f4
---
 ...nt 2026-09-29 22-01-20 UTC [b12c120b2c].md | 36 +++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 projects/25464650-ed5d-440e-b362-190f2852d451/Checkpoint 2026-09-29 22-01-20 UTC [b12c120b2c].md

diff --git a/projects/25464650-ed5d-440e-b362-190f2852d451/Checkpoint 2026-09-29 22-01-20 UTC [b12c120b2c].md b/projects/25464650-ed5d-440e-b362-190f2852d451/Checkpoint 2026-09-29 22-01-20 UTC [b12c120b2c].md
new file mode 100644
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+---
+title: Checkpoint 2026-09-29 22:01:20 UTC [b12c120b2c]
+type: checkpoint
+permalink: main/projects/25464650-ed5d-440e-b362-190f2852d451/checkpoint-2026-09-29-22-01-20-utc-b12c120b2c
+stable_id: e7becf00-932c-44df-a1ad-ba9c4d07f1f4
+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: t02-checkpoint-20260930-ready
+created_at: '2026-09-29T22:01:20.722902+00:00'
+updated_at: '2026-09-29T22:01:20.722902+00:00'
+tags:
+- t02
+- ready-to-merge
+- line-L
+- feat/t02-protocol
+---
+
+## T0.2 协议包完成（线 L）
+
+- **任务**：T0.2 `internal/protocol`
+- **分支**：`feat/t02-protocol`（已普通推送到 origin，非 force）
+- **工作树**：`E:/code/NixMsg-wt/t02`（`git rev-parse --show-toplevel` = `E:/code/NixMsg-wt/t02`，非主工作区）
+- **基于**：`origin/main` @ `86dc10a`
+- **提交**：
+  - `31d92f8` feat: 实现 internal/protocol 帧类型、编解码、校验与请求指纹
+  - `f9351e8` docs: 记录 T0.2 协议包实现偏差
+- **关键实现**：第 6 节全部 MQTT 帧类型 + 6.9 注册请求/响应 + hello `session_token` + `self.logout`；6.10 错误码常量；`Marshal`/`Encode` 用 `json.Encoder`+`SetEscapeHTML(false)` 并去掉尾换行；字段校验（端编号小写、消息号可大小写、正文/meta 大小、send_at_ms/delay_ms 互斥、登录密码禁 `nst_`）；7.3 请求指纹（meta 键序无关）；`FrameBytes`
+- **验证**：工作树内 `task check` 通过（web build、embeddist build、golangci-lint 0 issues、go test 全绿含 protocol 表驱动）
+- **偏差**：`docs/DEVIATIONS.md`「总控 L」T0.2 四条（指纹布局、有效默认值、去尾换行、校验范围）
+- **未做**：T0.3/T0.5/T0.4；未改 PRD；未改主工作区
+- **下一步**：总控审阅后 ff-merge 进 main；各线 rebase
+- **给下个会话**：复用工作树 `E:/code/NixMsg-wt/t02` 与分支 `feat/t02-protocol`；指纹布局以 fingerprint.go 为准，SDK 须对齐；合并前再 `task check`
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