chore: standardize config and fix component test mocks

- Replace .eslintrc.json with .eslintrc.js (standard @headlamp-k8s/eslint-config)
- Create .prettierrc.js (standard Headlamp prettier config)
- Add .headlamp-plugin/, .env, .env.local, .eslintcache to .gitignore
- Remove .claude/settings.json and .claude/settings.local.json from .gitignore
- Create .claude/settings.local.json with enabled MCP servers
- Remove "Subagent guidance" section and hardcoded test count from CLAUDE.md
- Fix 8 component test files: replace require('./__mocks__/commonComponents.ts')
  with await import('./__mocks__/commonComponents') in vi.mock factories —
  require() cannot process TypeScript in hoisted mock context

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/components/BenchmarkPage.test.tsx

@@ -13,8 +13,8 @@ vi.mock('@kinvolk/headlamp-plugin/lib', () => ({
   },
 }));
 
-vi.mock('@kinvolk/headlamp-plugin/lib/CommonComponents', () =>
-  require('./__mocks__/commonComponents.ts')
+vi.mock('@kinvolk/headlamp-plugin/lib/CommonComponents', async () =>
+  await import('./__mocks__/commonComponents')
 );
 
 vi.mock('../api/TnsCsiDataContext');

src/components/DriverStatusCard.test.tsx

@@ -1,8 +1,8 @@
 import { render, screen } from '@testing-library/react';
 import { describe, expect, it, vi } from 'vitest';
 
-vi.mock('@kinvolk/headlamp-plugin/lib/CommonComponents', () =>
-  require('./__mocks__/commonComponents.ts')
+vi.mock('@kinvolk/headlamp-plugin/lib/CommonComponents', async () =>
+  await import('./__mocks__/commonComponents')
 );
 
 import DriverStatusCard from './DriverStatusCard';

src/components/MetricsPage.test.tsx

@@ -1,8 +1,8 @@
 import { fireEvent, render, screen, waitFor } from '@testing-library/react';
 import { describe, expect, it, vi, beforeEach } from 'vitest';
 
-vi.mock('@kinvolk/headlamp-plugin/lib/CommonComponents', () =>
-  require('./__mocks__/commonComponents.ts')
+vi.mock('@kinvolk/headlamp-plugin/lib/CommonComponents', async () =>
+  await import('./__mocks__/commonComponents')
 );
 
 vi.mock('../api/TnsCsiDataContext');

src/components/OverviewPage.test.tsx

@@ -1,8 +1,8 @@
 import { fireEvent, render, screen, waitFor } from '@testing-library/react';
 import { describe, expect, it, vi, beforeEach } from 'vitest';
 
-vi.mock('@kinvolk/headlamp-plugin/lib/CommonComponents', () =>
-  require('./__mocks__/commonComponents.ts')
+vi.mock('@kinvolk/headlamp-plugin/lib/CommonComponents', async () =>
+  await import('./__mocks__/commonComponents')
 );
 
 vi.mock('../api/TnsCsiDataContext');

src/components/PVCDetailSection.test.tsx

@@ -1,8 +1,8 @@
 import { render, screen } from '@testing-library/react';
 import { describe, expect, it, vi } from 'vitest';
 
-vi.mock('@kinvolk/headlamp-plugin/lib/CommonComponents', () =>
-  require('./__mocks__/commonComponents.ts')
+vi.mock('@kinvolk/headlamp-plugin/lib/CommonComponents', async () =>
+  await import('./__mocks__/commonComponents')
 );
 
 vi.mock('../api/TnsCsiDataContext');

src/components/SnapshotsPage.test.tsx

@@ -1,8 +1,8 @@
 import { render, screen } from '@testing-library/react';
 import { describe, expect, it, vi } from 'vitest';
 
-vi.mock('@kinvolk/headlamp-plugin/lib/CommonComponents', () =>
-  require('./__mocks__/commonComponents.ts')
+vi.mock('@kinvolk/headlamp-plugin/lib/CommonComponents', async () =>
+  await import('./__mocks__/commonComponents')
 );
 
 vi.mock('../api/TnsCsiDataContext');

src/components/StorageClassesPage.test.tsx

@@ -1,8 +1,8 @@
 import { fireEvent, render, screen } from '@testing-library/react';
 import { describe, expect, it, vi, beforeEach } from 'vitest';
 
-vi.mock('@kinvolk/headlamp-plugin/lib/CommonComponents', () =>
-  require('./__mocks__/commonComponents.ts')
+vi.mock('@kinvolk/headlamp-plugin/lib/CommonComponents', async () =>
+  await import('./__mocks__/commonComponents')
 );
 
 let mockHash = '';

src/components/VolumesPage.test.tsx

@@ -1,8 +1,8 @@
 import { fireEvent, render, screen } from '@testing-library/react';
 import { describe, expect, it, vi, beforeEach } from 'vitest';
 
-vi.mock('@kinvolk/headlamp-plugin/lib/CommonComponents', () =>
-  require('./__mocks__/commonComponents.ts')
+vi.mock('@kinvolk/headlamp-plugin/lib/CommonComponents', async () =>
+  await import('./__mocks__/commonComponents')
 );
 
 let mockHash = '';