fix(web,api): fix orchestrator proxy 502 connectivity (#542)

Co-authored-by: Jason Woltje <jason@diversecanvas.com>
Co-committed-by: Jason Woltje <jason@diversecanvas.com>

docker-compose.coolify.yml

@@ -158,6 +158,8 @@ services:
       - NEXT_PUBLIC_APP_URL=${NEXT_PUBLIC_APP_URL}
       - NEXT_PUBLIC_ORCHESTRATOR_URL=${NEXT_PUBLIC_ORCHESTRATOR_URL:-}
       - NEXT_PUBLIC_AUTH_MODE=${NEXT_PUBLIC_AUTH_MODE:-real}
+      # Server-side orchestrator proxy (API routes forward to orchestrator service over internal network)
+      - ORCHESTRATOR_URL=http://orchestrator:3001
       - ORCHESTRATOR_API_KEY=${ORCHESTRATOR_API_KEY:-}
     depends_on:
       api:
@@ -222,6 +224,8 @@ services:
     environment:
       - NODE_ENV=production
       - ORCHESTRATOR_PORT=3001
+      # Bind to all interfaces so the web container can reach it over Docker networking
+      - HOST=0.0.0.0
       - AI_PROVIDER=${AI_PROVIDER:-ollama}
       - OLLAMA_ENDPOINT=${OLLAMA_ENDPOINT:-}
       - OLLAMA_MODEL=${OLLAMA_MODEL:-llama3.2}