Update Railway config and health response

src/app/api/health/route.ts

@@ -7,10 +7,10 @@ export async function GET() {
   const healthy = services.every((service) => service.status === 'healthy' || service.status === 'not_configured');
 
   const payload = {
+    status: 'ok',
+    service: 'prism-console',
     ok: healthy,
-    service: SERVICE_ID,
     ts: new Date().toISOString(),
-    status: healthy ? 'ok' : 'degraded',
     environment: serverConfig.environment,
     version: process.env.npm_package_version ?? 'unknown',
     services