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

bulk_control.go

@@ -793,31 +793,58 @@ func sendBulkResetServerTransport(ctx context.Context, s Server, transport *Tran
 	return decodeBulkResetResponse(msg)
 }
 
-func sendBulkReleaseClient(c Client, req BulkReleaseRequest) error {
+func sendBulkReleaseClient(ctx context.Context, c *ClientCommon, req BulkReleaseRequest) error {
 	if c == nil {
 		return errBulkClientNil
 	}
-	return c.SendObj(BulkReleaseSignalKey, req)
+	data, err := encode(req)
+	if err != nil {
+		return err
+	}
+	_, err = c.sendWithContext(ctx, TransferMsg{
+		Key:   BulkReleaseSignalKey,
+		Value: data,
+		Type:  MSG_ASYNC,
+	})
+	return err
 }
 
-func sendBulkReleaseServerLogical(s Server, logical *LogicalConn, req BulkReleaseRequest) error {
+func sendBulkReleaseServerLogical(ctx context.Context, s *ServerCommon, logical *LogicalConn, req BulkReleaseRequest) error {
 	if s == nil {
 		return errBulkServerNil
 	}
 	if logical == nil {
 		return errBulkLogicalConnNil
 	}
-	return s.SendObjLogical(logical, BulkReleaseSignalKey, req)
+	data, err := encode(req)
+	if err != nil {
+		return err
+	}
+	_, err = s.sendLogicalContext(ctx, logical, TransferMsg{
+		Key:   BulkReleaseSignalKey,
+		Value: data,
+		Type:  MSG_ASYNC,
+	}, 0)
+	return err
 }
 
-func sendBulkReleaseServerTransport(s Server, transport *TransportConn, req BulkReleaseRequest) error {
+func sendBulkReleaseServerTransport(ctx context.Context, s *ServerCommon, transport *TransportConn, req BulkReleaseRequest) error {
 	if s == nil {
 		return errBulkServerNil
 	}
 	if transport == nil {
 		return errBulkTransportNil
 	}
-	return s.SendObjTransport(transport, BulkReleaseSignalKey, req)
+	data, err := encode(req)
+	if err != nil {
+		return err
+	}
+	_, err = s.sendTransportContext(ctx, transport, TransferMsg{
+		Key:   BulkReleaseSignalKey,
+		Value: data,
+		Type:  MSG_ASYNC,
+	})
+	return err
 }
 
 func decodeBulkOpenRequest(msg *Message) (BulkOpenRequest, error) {