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.dev.yml

@@ -21,6 +21,20 @@ services:
   cameleer3-server:
     ports:
       - "8081:8081"
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+      - jardata:/data/jars
+    group_add:
+      - "0"
+    environment:
+      CAMELEER_RUNTIME_ENABLED: "true"
+      CAMELEER_JAR_STORAGE_PATH: /data/jars
+      CAMELEER_RUNTIME_BASE_IMAGE: gitea.siegeln.net/cameleer/cameleer-runtime-base:latest
+      CAMELEER_DOCKER_NETWORK: cameleer-saas_cameleer
+      CAMELEER_SERVER_URL: http://cameleer3-server:8081
+      CAMELEER_ROUTING_DOMAIN: ${PUBLIC_HOST:-localhost}
+      CAMELEER_ROUTING_MODE: path
+      CAMELEER_JAR_DOCKER_VOLUME: cameleer-saas_jardata
 
   cameleer3-server-ui:
     ports:
@@ -29,3 +43,6 @@ services:
   clickhouse:
     ports:
       - "8123:8123"
+
+volumes:
+  jardata: