test: unit and end-to-end suites

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

test/e2e-graph.test.cjs

@@ -32,7 +32,7 @@ app.whenReady().then(async () => {
   try {
     await sleep(1500);
     // Open Graph View
-    await js(`document.querySelector('.topbar [aria-label="Graph view"]').click()`);
+    await js(`[...document.querySelectorAll('.sidebar .qa')].find((b) => b.textContent.includes('Graph view')).click()`);
     await sleep(1000);
 
     // Open settings panel