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

session_owner_state.go

@@ -7,6 +7,7 @@ const (
 	ownerSessionStateStarting
 	ownerSessionStateRunning
 	ownerSessionStateStopping
+	ownerSessionStateFinalizing
 	ownerSessionStateStopped
 )
 
@@ -43,7 +44,7 @@ func markOwnerSessionStarted(state *atomic.Int32) {
 		switch current {
 		case ownerSessionStateRunning:
 			return
-		case ownerSessionStateStopping:
+		case ownerSessionStateStopping, ownerSessionStateFinalizing:
 			return
 		case ownerSessionStateStarting, ownerSessionStateIdle, ownerSessionStateStopped:
 			if state.CompareAndSwap(current, ownerSessionStateRunning) {
@@ -55,25 +56,47 @@ func markOwnerSessionStarted(state *atomic.Int32) {
 	}
 }
 
-func markOwnerSessionStopping(state *atomic.Int32) {
+func markOwnerSessionStopping(state *atomic.Int32) bool {
 	if state == nil {
-		return
+		return false
 	}
 	for {
 		current := state.Load()
 		switch current {
-		case ownerSessionStateStopping, ownerSessionStateStopped:
-			return
+		case ownerSessionStateStopping, ownerSessionStateFinalizing, ownerSessionStateStopped:
+			return false
 		case ownerSessionStateRunning, ownerSessionStateStarting:
 			if state.CompareAndSwap(current, ownerSessionStateStopping) {
-				return
+				return true
 			}
 		case ownerSessionStateIdle:
 			if state.CompareAndSwap(current, ownerSessionStateStopped) {
-				return
+				return true
 			}
 		default:
-			return
+			return false
+		}
+	}
+}
+
+// claimOwnerSessionStop elects exactly one caller to run session cleanup.
+// finalizing remains externally visible as "stopping" while preventing a
+// concurrent Stop/read-error path from entering cleanup a second time.
+func claimOwnerSessionStop(state *atomic.Int32) bool {
+	if state == nil {
+		return false
+	}
+	for {
+		current := state.Load()
+		switch current {
+		case ownerSessionStateFinalizing, ownerSessionStateStopped:
+			return false
+		case ownerSessionStateIdle, ownerSessionStateStarting, ownerSessionStateRunning, ownerSessionStateStopping:
+			if state.CompareAndSwap(current, ownerSessionStateFinalizing) {
+				return true
+			}
+		default:
+			return false
 		}
 	}
 }
@@ -101,7 +124,7 @@ func ownerSessionStateName(state int32) string {
 		return "starting"
 	case ownerSessionStateRunning:
 		return "running"
-	case ownerSessionStateStopping:
+	case ownerSessionStateStopping, ownerSessionStateFinalizing:
 		return "stopping"
 	case ownerSessionStateStopped:
 		return "stopped"
@@ -145,11 +168,18 @@ func (c *ClientCommon) markClientSessionStopped() {
 	markOwnerSessionStopped(&c.sessionOwnerState)
 }
 
-func (c *ClientCommon) markClientSessionStopping() {
+func (c *ClientCommon) markClientSessionStopping() bool {
 	if c == nil {
-		return
+		return false
 	}
-	markOwnerSessionStopping(&c.sessionOwnerState)
+	return markOwnerSessionStopping(&c.sessionOwnerState)
+}
+
+func (c *ClientCommon) claimClientSessionStop() bool {
+	if c == nil {
+		return false
+	}
+	return claimOwnerSessionStop(&c.sessionOwnerState)
 }
 
 func (c *ClientCommon) ownerSessionState() int32 {
@@ -191,11 +221,18 @@ func (s *ServerCommon) markServerSessionStopped() {
 	markOwnerSessionStopped(&s.sessionOwnerState)
 }
 
-func (s *ServerCommon) markServerSessionStopping() {
+func (s *ServerCommon) markServerSessionStopping() bool {
 	if s == nil {
-		return
+		return false
 	}
-	markOwnerSessionStopping(&s.sessionOwnerState)
+	return markOwnerSessionStopping(&s.sessionOwnerState)
+}
+
+func (s *ServerCommon) claimServerSessionStop() bool {
+	if s == nil {
+		return false
+	}
+	return claimOwnerSessionStop(&s.sessionOwnerState)
 }
 
 func (s *ServerCommon) ownerSessionState() int32 {