fix: add cameleer-traefik network so deployed apps can reach server

Deployed app containers are put on the cameleer-traefik network by the
orchestrator, but the server and Traefik were only on the compose-internal
network. This caused UnresolvedAddressException when apps tried to connect
to cameleer3-server:8081 for agent registration and SSE.

- Add cameleer-traefik network with fixed name (no compose project prefix)
- Attach server to cameleer-traefik with DNS alias "cameleer3-server"
- Attach Traefik to cameleer-traefik for routing to deployed apps
- Add dev overrides for Docker orchestration (socket, volumes, env vars)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docker-compose.yml

@@ -38,6 +38,7 @@ services:
       - certs:/etc/traefik/certs:ro
     networks:
       - cameleer
+      - cameleer-traefik
 
   postgres:
     image: postgres:16-alpine
@@ -190,7 +191,10 @@ services:
     labels:
       - traefik.enable=false
     networks:
-      - cameleer
+      cameleer:
+      cameleer-traefik:
+        aliases:
+          - cameleer3-server
 
   cameleer3-server-ui:
     image: ${CAMELEER3_SERVER_UI_IMAGE:-gitea.siegeln.net/cameleer/cameleer3-server-ui}:${VERSION:-latest}
@@ -231,6 +235,9 @@ services:
 networks:
   cameleer:
     driver: bridge
+  cameleer-traefik:
+    name: cameleer-traefik
+    driver: bridge
 
 volumes:
   pgdata: