feat: add Playwright E2E smoke tests and fix empty namespace crash

Fix getNamespaces() to skip cluster-scoped resources (Namespace: "")
that caused Router.createRouteURL to throw TypeError on the Namespaces
page. Add Playwright E2E smoke tests with Authentik OIDC auth for CI
and K8s token fallback for local dev. Add Gitea Actions E2E workflow,
vitest unit test infrastructure, and test-utils fixtures.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/components/NamespaceDetailView.test.tsx

@@ -0,0 +1,200 @@
+import { render, screen } from '@testing-library/react';
+import React from 'react';
+import { describe, expect, it, vi } from 'vitest';
+import { makeAuditData, makeResult } from '../test-utils';
+
+// Mock Headlamp lib
+vi.mock('@kinvolk/headlamp-plugin/lib', () => ({
+  ApiProxy: { request: vi.fn() },
+}));
+
+// Mock react-router-dom useParams
+const mockNamespace = vi.fn(() => 'test-ns');
+vi.mock('react-router-dom', () => ({
+  useParams: () => ({ namespace: mockNamespace() }),
+}));
+
+// Mock Headlamp CommonComponents
+vi.mock('@kinvolk/headlamp-plugin/lib/CommonComponents', () => ({
+  Loader: ({ title }: { title: string }) => <div data-testid="loader">{title}</div>,
+  SectionBox: ({ title, children }: { title?: string; children?: React.ReactNode }) => (
+    <div data-testid="section-box" data-title={title}>
+      {children}
+    </div>
+  ),
+  SectionHeader: ({ title }: { title: string }) => <div data-testid="section-header">{title}</div>,
+  StatusLabel: ({ status, children }: { status: string; children?: React.ReactNode }) => (
+    <span data-testid="status-label" data-status={status}>
+      {children}
+    </span>
+  ),
+  NameValueTable: ({ rows }: { rows: Array<{ name: string; value: React.ReactNode }> }) => (
+    <table data-testid="name-value-table">
+      <tbody>
+        {rows.map(row => (
+          <tr key={row.name}>
+            <td>{row.name}</td>
+            <td>{row.value}</td>
+          </tr>
+        ))}
+      </tbody>
+    </table>
+  ),
+  SimpleTable: ({
+    columns,
+    data,
+    emptyMessage,
+  }: {
+    columns: Array<{ label: string; getter: (row: unknown) => React.ReactNode }>;
+    data: unknown[];
+    emptyMessage?: string;
+  }) =>
+    data.length === 0 ? (
+      <div data-testid="simple-table-empty">{emptyMessage}</div>
+    ) : (
+      <table data-testid="simple-table">
+        <thead>
+          <tr>
+            {columns.map(col => (
+              <th key={col.label}>{col.label}</th>
+            ))}
+          </tr>
+        </thead>
+        <tbody>
+          {data.map((row, i) => (
+            <tr key={i}>
+              {columns.map(col => (
+                <td key={col.label}>{col.getter(row)}</td>
+              ))}
+            </tr>
+          ))}
+        </tbody>
+      </table>
+    ),
+}));
+
+const mockUsePolarisDataContext = vi.fn();
+vi.mock('../api/PolarisDataContext', () => ({
+  usePolarisDataContext: () => mockUsePolarisDataContext(),
+}));
+
+import NamespaceDetailView from './NamespaceDetailView';
+
+describe('NamespaceDetailView', () => {
+  it('renders loader when loading', () => {
+    mockUsePolarisDataContext.mockReturnValue({
+      data: null,
+      loading: true,
+      error: null,
+    });
+
+    render(<NamespaceDetailView />);
+    expect(screen.getByTestId('loader')).toHaveTextContent('Loading Polaris data for test-ns');
+  });
+
+  it('renders error message when error is set', () => {
+    mockUsePolarisDataContext.mockReturnValue({
+      data: null,
+      loading: false,
+      error: 'Access denied (403)',
+    });
+
+    render(<NamespaceDetailView />);
+    expect(screen.getByText('Access denied (403)')).toBeInTheDocument();
+    expect(screen.getByTestId('section-header')).toHaveTextContent('Polaris — test-ns');
+  });
+
+  it('renders "No Data" when no data and no error', () => {
+    mockUsePolarisDataContext.mockReturnValue({
+      data: null,
+      loading: false,
+      error: null,
+    });
+
+    render(<NamespaceDetailView />);
+    expect(screen.getByText('No Polaris audit results found.')).toBeInTheDocument();
+  });
+
+  it('renders namespace score and resource table with data', () => {
+    const data = makeAuditData([
+      makeResult({
+        Name: 'deploy-a',
+        Namespace: 'test-ns',
+        Kind: 'Deployment',
+        Results: {
+          c1: {
+            ID: 'c1',
+            Message: '',
+            Details: [],
+            Success: true,
+            Severity: 'warning',
+            Category: 'X',
+          },
+          c2: {
+            ID: 'c2',
+            Message: '',
+            Details: [],
+            Success: false,
+            Severity: 'warning',
+            Category: 'X',
+          },
+        },
+      }),
+      makeResult({
+        Name: 'other',
+        Namespace: 'other-ns',
+        Kind: 'Deployment',
+        Results: {
+          c3: {
+            ID: 'c3',
+            Message: '',
+            Details: [],
+            Success: true,
+            Severity: 'warning',
+            Category: 'X',
+          },
+        },
+      }),
+    ]);
+
+    mockUsePolarisDataContext.mockReturnValue({
+      data,
+      loading: false,
+      error: null,
+    });
+
+    render(<NamespaceDetailView />);
+
+    // Header
+    expect(screen.getByTestId('section-header')).toHaveTextContent('Polaris — test-ns');
+
+    // Score section: 50% (1 pass / 2 total)
+    expect(screen.getByText('50%')).toBeInTheDocument();
+    expect(screen.getByText('Total Checks')).toBeInTheDocument();
+
+    // Resource table shows only test-ns resources
+    expect(screen.getByText('deploy-a')).toBeInTheDocument();
+    expect(screen.queryByText('other')).not.toBeInTheDocument();
+  });
+
+  it('renders empty table message for namespace with no results', () => {
+    const data = makeAuditData([
+      makeResult({
+        Name: 'deploy-a',
+        Namespace: 'other-ns',
+        Results: {},
+      }),
+    ]);
+
+    mockUsePolarisDataContext.mockReturnValue({
+      data,
+      loading: false,
+      error: null,
+    });
+
+    render(<NamespaceDetailView />);
+    expect(screen.getByTestId('simple-table-empty')).toHaveTextContent(
+      'No resources found in namespace "test-ns"'
+    );
+  });
+});