feat: production-readiness pass

- Migrate login page to atelier design system (editorial modal style)
- Polish root error.tsx, not-found.tsx, loading.tsx with atelier design
- Add JSON-LD structured data: SoftwareApplication + LocalBusiness
- Fix next.config.ts outputFileTracingRoot absolute path warning
- Add force-dynamic to protected-example (uses cookies)
- Add proper type for stops page (replace : any)
- Fix unescaped quotes in StopTableClient
- Fix no-explicit-any in db-schema route
- Clean up console.logs in admin-permissions
- Fix inline any in admin/stops page
- Update OG image references to existing og-default.svg

next.config.ts

@@ -12,8 +12,9 @@ const nextConfig: NextConfig = {
   //    /home/tyler/package-lock.json as the root directory."
   // The deploy runner's APP_DIR is /home/tyler/route-commerce, so
   // resolving relative to the project root is correct both locally and
-  // in CI.
-  outputFileTracingRoot: ".",
+  // in CI. We resolve to an absolute path to avoid the warning in
+  // Next.js 16 which prefers absolute paths here.
+  outputFileTracingRoot: __dirname,
 
   // Enable strict mode
   reactStrictMode: true,