Initial commit of vite-saas template

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/components/route-states.tsx

@@ -0,0 +1,34 @@
+import { Link } from '@tanstack/react-router';
+
+// Stand-ins for Next's built-in 404 and error pages.
+
+export function NotFound() {
+  return (
+    <div className="flex min-h-screen items-center justify-center">
+      <div className="flex items-center gap-6">
+        <div className="text-lg font-medium whitespace-nowrap">404</div>
+        <div className="h-6 border-l border-border"></div>
+        <div className="max-w-lg text-sm text-muted-foreground">
+          This page could not be found.{' '}
+          <Link to="/" className="underline underline-offset-2">
+            Go home
+          </Link>
+        </div>
+      </div>
+    </div>
+  );
+}
+
+export function ErrorMessage({ error }: { error: unknown }) {
+  return (
+    <div className="flex min-h-screen items-center justify-center">
+      <div className="flex items-center gap-6">
+        <div className="text-lg font-medium whitespace-nowrap">Something went wrong</div>
+        <div className="h-6 border-l border-border"></div>
+        <div className="max-w-lg text-sm text-muted-foreground">
+          {error instanceof Error ? error.message : String(error)}
+        </div>
+      </div>
+    </div>
+  );
+}