My Node.js backend (scenefinder-backend, deployment 9eee43ba) registers POST /api/search and POST /api/upload — confirmed in startup logs. But all POST requests from external clients return {"error":"Route not found"}, which is our app's 404 catch-all handler. This means Railway's ingress proxy is routing POST requests differently than GET requests.

GET /api/library works fine (returns 200). But GET /api/search (a POST-only route) returns 404 instead of 405 Method Not Allowed. This proves the request is being intercepted before Express can check the HTTP method.

Please check if there is a routing rule, ingress config, WAF rule, or proxy layer that is blocking or stripping POST method traffic before it reaches port 8080.