Add tests for centered modal adoption, search modal results, and accounts batch actions

- Implement tests for the CenteredModal component to ensure it follows the shared modal shell pattern.
- Add comprehensive tests for the SearchModal results, including API interactions and UI behavior.
- Create tests for accounts batch actions, verifying the functionality of refreshing balances and selecting accounts via row clicks.
- Introduce tests for the accounts centered modal to confirm the use of CenteredModal for add/edit/rebind flows.
- Add tests for the accounts edit panel to ensure proper rendering and functionality when opening the edit modal.
- Implement tests for the accounts tokens header to verify the reuse of the accounts page header in the tokens segment.
- Create tests for the system proxy settings, ensuring the correct saving of the proxy URL.
- Add tests for the tokens actions layout to confirm the proper layout and styling of token row actions.
- Implement tests for the tokens batch actions, including deletion of selected tokens and row selection behavior.
- Introduce tests for the tokens focus navigation to ensure the correct highlighting of focused token rows.

src/web/pages/accounts.centered-modal.test.ts

@@ -0,0 +1,13 @@
+import { describe, expect, it } from 'vitest';
+import { readFileSync } from 'node:fs';
+import { resolve } from 'node:path';
+
+describe('Accounts centered modal adoption', () => {
+  it('uses CenteredModal for add/edit/rebind flows instead of inline panel cards', () => {
+    const source = readFileSync(resolve(process.cwd(), 'src/web/pages/Accounts.tsx'), 'utf8');
+
+    expect(source).toContain("import CenteredModal from '../components/CenteredModal.js'");
+    expect(source).toContain('<CenteredModal');
+    expect(source).not.toContain('className={`card panel-presence rebind-panel');
+  });
+});