feat: add bundled WireGuard tools support for macOS desktop client with fallback path resolution

Add wg and wg-quick bundling to build-tunnel-helper.sh for aarch64-apple-darwin target. Check for wireguard-tools installation and copy binaries to output directory with execute permissions.

Implement find_wg_quick helper with bundled tool detection and standard path fallbacks. Add bundled_macos_tool to check for tools in current executable directory. Update connect_direct and disconnect_direct to use explicit

desktop-client/tunnel-helper/src/main.rs

@@ -529,7 +529,9 @@ fn connect_direct(profile: &Path) -> Result<(), String> {
 
     #[cfg(target_os = "macos")]
     {
-        let command = format!("wg-quick up '{}'", profile.display());
+        let wg_quick = find_wg_quick()?;
+        let path_prefix = macos_command_path_prefix(&wg_quick);
+        let command = format!("PATH='{}:$PATH' '{}' up '{}'", path_prefix, wg_quick.display(), profile.display());
         let status = Command::new("osascript")
             .arg("-e")
             .arg(format!("do shell script \"{}\" with administrator privileges", command))
@@ -567,7 +569,9 @@ fn disconnect_direct(profile: &Path) -> Result<(), String> {
 
     #[cfg(target_os = "macos")]
     {
-        let command = format!("wg-quick down '{}'", profile.display());
+        let wg_quick = find_wg_quick()?;
+        let path_prefix = macos_command_path_prefix(&wg_quick);
+        let command = format!("PATH='{}:$PATH' '{}' down '{}'", path_prefix, wg_quick.display(), profile.display());
         let status = Command::new("osascript")
             .arg("-e")
             .arg(format!("do shell script \"{}\" with administrator privileges", command))
@@ -808,9 +812,59 @@ fn find_wg_cli() -> Result<PathBuf, String> {
 
 #[cfg(target_os = "macos")]
 fn find_wg_cli() -> Result<PathBuf, String> {
+    if let Some(path) = bundled_macos_tool("wg") {
+        return Ok(path);
+    }
+
+    let candidates = [
+        PathBuf::from("/opt/homebrew/bin/wg"),
+        PathBuf::from("/usr/local/bin/wg"),
+        PathBuf::from("/usr/bin/wg"),
+    ];
+
+    if let Some(path) = candidates.into_iter().find(|path| path.exists()) {
+        return Ok(path);
+    }
+
     Ok(PathBuf::from("wg"))
 }
 
+#[cfg(target_os = "macos")]
+fn find_wg_quick() -> Result<PathBuf, String> {
+    if let Some(path) = bundled_macos_tool("wg-quick") {
+        return Ok(path);
+    }
+
+    let candidates = [
+        PathBuf::from("/opt/homebrew/bin/wg-quick"),
+        PathBuf::from("/usr/local/bin/wg-quick"),
+        PathBuf::from("/usr/bin/wg-quick"),
+    ];
+
+    candidates
+        .into_iter()
+        .find(|path| path.exists())
+        .or_else(|| Some(PathBuf::from("wg-quick")))
+        .ok_or_else(|| "required macOS tunnel runtime is not available".to_string())
+}
+
+#[cfg(target_os = "macos")]
+fn bundled_macos_tool(name: &str) -> Option<PathBuf> {
+    let current_exe = std::env::current_exe().ok()?;
+    let dir = current_exe.parent()?;
+    let path = dir.join(name);
+    path.exists().then_some(path)
+}
+
+#[cfg(target_os = "macos")]
+fn macos_command_path_prefix(tool_path: &Path) -> String {
+    let parent = tool_path
+        .parent()
+        .map(|path| path.display().to_string())
+        .unwrap_or_else(|| "/opt/homebrew/bin".to_string());
+    format!("{parent}:/opt/homebrew/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin")
+}
+
 #[cfg(target_os = "windows")]
 fn find_windows_wireguard() -> Result<PathBuf, String> {
     let candidates = [