App is running fine (logs show clean polling every 5 minutes), but public URL claude-messaging-production.up.railway.app returns persistent 502 from edge. Container healthy, but routing layer not connecting to it.

Response to curl command:

HTTP/2 502

content-type: application/json

server: railway-hikari

x-railway-fallback: true

x-railway-request-id: -UwAbe-GT-qHMgJDnTga3g

content-length: 109

date: Wed, 26 Aug 2026 23:51:44 GMT

x-hikari-trace: yul1.dxc5

x-railway-edge: yul1

{"status":"error","code":502,"message":"Application failed to respond","request_id":"-UwAbe-GT-qHMgJDnTga3g"}