fix: resolve Prettier markdown code block parsing errors

- Fix syntax errors in skills markdown files (.github/skills, .opencode/skills)
- Change typescript to tsx for code blocks with JSX
- Replace ellipsis (...) in array examples with valid syntax
- Separate CSS from TypeScript into distinct code blocks
- Convert JavaScript object examples to valid JSON in docs
- Fix enum definitions with proper comma separation

middleware.ts

@@ -0,0 +1,14 @@
+import { neonAuthMiddleware } from "@neondatabase/auth/next/server";
+
+export default neonAuthMiddleware({
+  // Redirects unauthenticated users to sign-in page
+  loginUrl: "/auth/sign-in",
+});
+
+export const config = {
+  matcher: [
+    // Protected routes requiring authentication
+    "/dashboard/:path*",
+    "/account/:path*",
+  ],
+};