feat(stereo): 新增不同型号的小爱音箱组立体声应用

examples/stereo/src/app/entry.rs

@@ -0,0 +1,28 @@
+#![cfg(target_os = "linux")]
+
+use crate::app::master::run_master;
+use crate::app::slave::run_slave;
+use crate::net::protocol::ChannelRole;
+use anyhow::Result;
+use std::env;
+
+pub async fn run_stereo() -> Result<()> {
+    let args: Vec<String> = env::args().collect();
+    if args.len() < 3 {
+        eprintln!("用法: {} [master|slave] [left|right]", args[0]);
+        return Ok(());
+    }
+
+    let mode = &args[1];
+    let role = if args[2].to_lowercase() == "left" {
+        ChannelRole::Left
+    } else {
+        ChannelRole::Right
+    };
+
+    if mode == "master" {
+        run_master(role).await
+    } else {
+        run_slave(role).await
+    }
+}