fix(notify): 修复传输生命周期竞态，完善背压与协议边界

- 完善 stream/bulk DataID 分配、预留和双向命名空间，修复并发打开及 dedicated/shared 回退时的 ID 冲突
- 将收发、回复、恢复任务和 sidecar 绑定原始会话与物理连接，防止重连后的旧消息误操作新连接
- 加强 close/reset 身份校验及实例移除检查，修复 dedicated attach 失败、通道引用和资源回收竞态
- 收紧批量发送器停止准入，确保在途入队完成后统一清理请求、缓冲区和等待者
- 修复 record 满队列死锁、取消时序号消耗及关闭竞态，确保关闭有界并返回真实错误
- 增加协商式 record 逻辑半关闭，保留反向 ACK；通过 reset 传递 RecordFailure，避免背压掩盖原始失败原因
- 补齐帧长度、批次数量、序号溢出和未确认窗口校验，提前拒绝超限数据并按字节预算拆批
- 为入站分发增加全局及单连接的条数、字节预算和阻塞背压，关闭时唤醒等待者，消除正常断连日志噪音
- 完善 bulk 窗口释放失败处理与传输诊断，补充并发、重连、背压、协议边界及真实 TCP 回归覆盖

server_session.go

@@ -62,6 +62,15 @@ func (s *ServerCommon) detachClientSessionTransport(client *ClientConn, reason s
 }
 
 func (s *ServerCommon) detachLogicalSessionTransport(logical *LogicalConn, reason string, err error) {
+	if s == nil || logical == nil {
+		return
+	}
+	logical.transportLifecycleMu.Lock()
+	defer logical.transportLifecycleMu.Unlock()
+	s.detachLogicalSessionTransportLocked(logical, reason, err)
+}
+
+func (s *ServerCommon) detachLogicalSessionTransportLocked(logical *LogicalConn, reason string, err error) {
 	if s == nil || logical == nil {
 		return
 	}
@@ -185,6 +194,14 @@ func (s *ServerCommon) attachAcceptedLogicalTransport(logical *LogicalConn, addr
 		return errors.New("logical conn is nil")
 	}
 	logical.setServer(s)
+	logical.transportLifecycleMu.Lock()
+	defer logical.transportLifecycleMu.Unlock()
+	if oldConn := logical.transportSnapshot(); tuConn != nil && oldConn != nil && oldConn != tuConn {
+		// Reusing a logical peer is a transport-generation boundary. Retire every
+		// operation pinned to the old connection before publishing the replacement;
+		// otherwise an in-flight dedicated attach can revive an old bulk.
+		s.detachLogicalSessionTransportLocked(logical, "server transport replaced", transportDetachedError("server transport replaced", nil))
+	}
 	return logical.attachAcceptedTransport(addr, tuConn)
 }