feat: initial commit of diagd - unified Linux/BSD/macOS/Windows diagnostic tool (TUI + GUI)

test/widget_test.dart

@@ -0,0 +1,7 @@
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  test('diagnostics basic test placeholder', () {
+    expect(1 + 1, equals(2));
+  });
+}