feat(notify): 重构通信内核并补齐 stream/bulk/record/transfer 能力

- 引入 LogicalConn/TransportConn 分层，ClientConn 保留兼容适配层
  - 新增 Stream、Bulk、RecordStream 三条数据面能力及对应控制路径
  - 完成 transfer/file 传输内核与状态快照、诊断能力
  - 补齐 reconnect、inbound dispatcher、modern psk 等基础模块
  - 增加大规模回归、并发与基准测试覆盖
  - 更新依赖库

client_dispatcher.go

@@ -0,0 +1,47 @@
+package notify
+
+func (c *ClientCommon) dispatchMsg(message Message) {
+	switch message.TransferMsg.Type {
+	case MSG_SYS_WAIT:
+		fallthrough
+	case MSG_SYS:
+		c.sysMsg(message)
+		return
+	case MSG_KEY_CHANGE:
+		fallthrough
+	case MSG_SYS_REPLY:
+		fallthrough
+	case MSG_SYNC_REPLY:
+		if c.getPendingWaitPool().deliver(message.ID, message) {
+			return
+		}
+		fallthrough
+	default:
+	}
+	if c.dispatchInternalTransferControl(message) {
+		return
+	}
+	callFn := func(fn func(*Message)) {
+		fn(&message)
+	}
+	fn, ok := c.linkFns[message.Key]
+	if ok {
+		callFn(fn)
+	}
+	if c.defaultFns != nil {
+		callFn(c.defaultFns)
+	}
+}
+
+func (c *ClientCommon) sysMsg(message Message) {
+	switch message.Key {
+	case "bye":
+		if message.TransferMsg.Type == MSG_SYS_WAIT {
+			c.setByeFromServer(true)
+			message.Reply(nil)
+			c.stopClientSession("recv stop signal from server", nil)
+			return
+		}
+		c.stopClientSessionFromServer("recv stop signal from server", nil)
+	}
+}