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_runtime.go

@@ -289,7 +289,7 @@ func (c *ClientCommon) startClientWithConnSource(conn net.Conn, source *clientCo
 	queue := stario.NewQueueCtx(stopCtx, 4, math.MaxUint32)
 	c.setClientConnectSource(source)
 	rt := newClientSessionRuntime(conn, stopCtx, stopFn, queue, epoch)
-	c.setClientSessionRuntime(rt)
+	c.setClientSessionRuntimeWithCloseOld(rt, true)
 	c.resetClientStopState()
 	c.markSessionStarted()
 	return c.clientPostInit(rt)
@@ -360,7 +360,16 @@ func (c *ClientCommon) bootstrapClientTransportRuntime(rt *clientSessionRuntime,
 	if err := c.announceClientPeerIdentity(); err != nil {
 		return c.failClientTransportBootstrap(rt, stopSessionOnFailure, "peer attach failed", err)
 	}
+	var transitionProfile *transportProtectionProfile
+	if c.securityConfigured {
+		transitionProfile = c.installInboundTransitionProfile(c.clientTransportProtectionSnapshot())
+	}
 	c.activateClientSteadyTransportProtection()
+	if transitionProfile != nil {
+		time.AfterFunc(peerAttachTransitionFallbackTTL, func() {
+			c.clearInboundTransitionProfile(transitionProfile)
+		})
+	}
 	return nil
 }