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.swarm.portainer.yml

@@ -252,6 +252,8 @@ 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}
       VALKEY_URL: redis://valkey:6379
       VALKEY_HOST: valkey
@@ -263,6 +265,8 @@ services:
       GIT_USER_EMAIL: "orchestrator@mosaicstack.dev"
       KILLSWITCH_ENABLED: "true"
       SANDBOX_ENABLED: "true"
+      # API key for authenticating requests from the web proxy
+      ORCHESTRATOR_API_KEY: ${ORCHESTRATOR_API_KEY}
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock:ro
       - orchestrator_workspace:/workspace