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+---
+title: Checkpoint 2026-09-30 11:20:45 UTC [d43d623f2c]
+type: checkpoint
+permalink: main/projects/25464650-ed5d-440e-b362-190f2852d451/checkpoint-2026-09-30-11-20-45-utc-d43d623f2c
+stable_id: 6fb237f4-e609-44b3-8921-7e33816b6a19
+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: ckpt-r3-66-a14ca0d-20260930
+created_at: '2026-09-30T11:20:45.148322+00:00'
+updated_at: '2026-09-30T11:20:45.148322+00:00'
+tags:
+- ready-to-merge
+- r3-02
+- issue-66
+---
+
+# 检查点：#66 / R3-02 积压断开已推送
+
+## 完成
+- 分支 `feat/fix-r3-66-disconnect` HEAD `a14ca0d`，已推送 origin，未合 main。
+- 带断开下行：本帧 OnPacketSent（packet id / 载荷）等待，去掉连接级 sentPub。
+- Shutdown：ctx 未取消时先 waitConnsQuiet（downCh + wirePending），再 DisconnectClient 发 0x8B，waitConnsGone；已取消则发完即 Close。
+- DEVIATIONS 追加「复审修复 R3-02」。Gitea #66 已评论。
+
+## 验证
+- `go test ./internal/broker/` 通过
+- `go test ./cmd/nixmsg/` 通过
+
+## 给下个会话
+- 可 rebase origin/main 后由总控合入；不要合 feat/fix-3-downlink-deadlock。