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

signal_reliable.go

@@ -230,11 +230,15 @@ func sendSignalWithAckTracked(state *signalReliabilityState, scope string, signa
 }
 
 func (c *ClientCommon) sendSignalEnvelopeMaybeReliable(env Envelope, msg TransferMsg) error {
+	return c.sendSignalEnvelopeMaybeReliableAtRoute(c.clientSessionRouteSnapshot(), env, msg)
+}
+
+func (c *ClientCommon) sendSignalEnvelopeMaybeReliableAtRoute(route clientSessionRoute, env Envelope, msg TransferMsg) error {
 	state := c.getSignalReliabilityState()
 	state.incSignalSend()
 	cfg := c.getSignalReliabilityConfig()
 	if !cfg.Enabled || !signalCanUseTransportAck(msg) {
-		return c.sendEnvelope(env)
+		return c.sendEnvelopeAtRoute(route, env)
 	}
 	state.incReliableSend()
 	return retryReliableSignalSendWithAttempt(cfg, func(cfg signalReliabilityConfig, attempt int) error {
@@ -242,7 +246,7 @@ func (c *ClientCommon) sendSignalEnvelopeMaybeReliable(env Envelope, msg Transfe
 			state.incRetry()
 		}
 		return sendSignalWithAckTracked(state, clientFileScope(), env.ID, cfg.AckTimeout, c.getSignalAckPool(), func() error {
-			return c.sendEnvelope(env)
+			return c.sendEnvelopeAtRoute(route, env)
 		})
 	})
 }
@@ -274,7 +278,11 @@ func (s *ServerCommon) sendSignalEnvelopeMaybeReliableTransport(transport *Trans
 }
 
 func (c *ClientCommon) sendSignalAck(signalID uint64) error {
-	return c.sendEnvelope(newSignalAckEnvelope(signalID))
+	return c.sendSignalAckAtRoute(c.clientSessionRouteSnapshot(), signalID)
+}
+
+func (c *ClientCommon) sendSignalAckAtRoute(route clientSessionRoute, signalID uint64) error {
+	return c.sendEnvelopeAtRoute(route, newSignalAckEnvelope(signalID))
 }
 
 func (s *ServerCommon) sendSignalAck(logical *LogicalConn, signalID uint64) error {
@@ -311,6 +319,10 @@ func (s *ServerCommon) handleSignalAckEnvelopeTransport(transport *TransportConn
 }
 
 func (c *ClientCommon) handleReceivedSignalReliability(msg TransferMsg) bool {
+	return c.handleReceivedSignalReliabilityAtRoute(c.clientSessionRouteSnapshot(), msg)
+}
+
+func (c *ClientCommon) handleReceivedSignalReliabilityAtRoute(route clientSessionRoute, msg TransferMsg) bool {
 	cfg := c.getSignalReliabilityConfig()
 	if !cfg.Enabled || !signalCanUseTransportAck(msg) {
 		return false
@@ -321,7 +333,7 @@ func (c *ClientCommon) handleReceivedSignalReliability(msg TransferMsg) bool {
 		state.incDuplicateRecv()
 	}
 	state.incAckSend()
-	if err := c.sendSignalAck(msg.ID); err != nil {
+	if err := c.sendSignalAckAtRoute(route, msg.ID); err != nil {
 		state.incAckSendError()
 		if c.showError || c.debugMode {
 			fmt.Println("client send signal ack error", err)