fix(notify): 根治低带宽控制面阻塞与传输写入卡死

- 为控制消息增加优先级、公平调度、队列字节预算和自适应批处理
- 支持可取消的写门等待，收紧 shared/dedicated bulk、stream 和 Reply 写入边界
- 修复 bulk reset/close、连接 handoff 和安全 profile 切换时序
- 保留旧取消与超时错误契约，新增阶段化 TransportSendError
- 增加 ReplyCtx、ReplyObjCtx、写超时配置及黑洞连接和竞态回归测试

client_conn_session.go

@@ -107,6 +107,11 @@ func (c *LogicalConn) detachServerOwnedTransport() {
 	if c == nil {
 		return
 	}
-	c.closeTransport()
+	conn := c.transportSnapshot()
+	// Revoke read-loop ownership before closing the socket. Otherwise the close
+	// error can race with detach and incorrectly stop the logical session.
 	c.clearSessionRuntimeTransport()
+	if conn != nil {
+		_ = conn.Close()
+	}
 }