fix: update browser e2e get-tree assertion to match new response shape (#49)

PR #45 changed the get-tree IPC response from a flat array to
{ nodes, totalCount }, but browser.test.ts was not updated to match,
causing the release workflow to fail on every push to main.

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: piotrski

packages/e2e-tests/src/browser.test.ts

@@ -71,7 +71,7 @@ describe('Browser e2e', () => {
   it('get-tree returns real component hierarchy', async () => {
     const resp = await sendIpcCommand(socketPath, { type: 'get-tree' });
     expect(resp.ok).toBe(true);
-    const nodes = resp.data as Array<{ displayName: string; type: string; label: string }>;
+    const { nodes } = resp.data as { nodes: Array<{ displayName: string; type: string; label: string }> };
     expect(nodes.length).toBeGreaterThan(5);
 
     const names = nodes.map((n) => n.displayName);