fix(routes): add missing coverage route and update gitignore

- Add src/routes/dashboard/coverage/index.tsx that was missing from repo
- Update .gitignore to use /coverage/ pattern to only ignore root-level
  coverage directory, not src/routes/dashboard/coverage/

The routeTree.gen.ts was referencing this route but it wasn't tracked.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Author: aledlie

.gitignore

@@ -24,8 +24,8 @@ yarn-error.log*
 lerna-debug.log*
 pnpm-debug.log*
 
-# Testing
-coverage/
+# Testing (root-level coverage directory only, not src/routes/dashboard/coverage)
+/coverage/
 .nyc_output/
 *.lcov
 

src/routes/dashboard/coverage/index.tsx

@@ -0,0 +1,41 @@
+import { createFileRoute } from '@tanstack/react-router';
+import { lazy, Suspense } from 'react';
+import { SuspenseLoader } from '@/components/SuspenseLoader';
+
+/**
+ * Lazy-loaded Test Coverage Page component
+ *
+ * Uses React.lazy for code splitting to reduce initial bundle size.
+ * The TestCoveragePage component is only loaded when this route is accessed.
+ */
+const TestCoveragePage = lazy(() => import('@/features/dashboard/components/TestCoveragePage'));
+
+/**
+ * Test Coverage Route Configuration
+ *
+ * File-based routing for TanStack Router.
+ * Route: /dashboard/coverage/
+ *
+ * Features:
+ * - Lazy loading with React.lazy and Suspense
+ * - SuspenseLoader fallback during code/data loading
+ * - Breadcrumb configuration for navigation
+ * - Type-safe route definition
+ */
+export const Route = createFileRoute('/dashboard/coverage/')({
+  /**
+   * Route component with Suspense wrapper
+   */
+  component: () => (
+    <Suspense fallback={<SuspenseLoader />}>
+      <TestCoveragePage />
+    </Suspense>
+  ),
+
+  /**
+   * Loader function for route metadata
+   */
+  loader: () => ({
+    crumb: 'Test Coverage',
+  }),
+});