feat: add minimal test for socket connection using UnixStream

bridge/examples/test_connect.rs

@@ -0,0 +1,19 @@
+// Minimal test to verify socket connection
+use tokio::net::UnixStream;
+
+#[tokio::main]
+async fn main() {
+    let socket_path = std::env::var("XDG_RUNTIME_DIR")
+        .unwrap_or_else(|_| "/run/user/1000".to_string()) + "/stardust-0";
+    
+    println!("Attempting to connect to: {}", socket_path);
+    
+    match UnixStream::connect(&socket_path).await {
+        Ok(_stream) => {
+            println!("✓ Successfully connected to socket!");
+        }
+        Err(e) => {
+            println!("✗ Failed to connect: {}", e);
+        }
+    }
+}