Adds the `traefik.enable=true` tag to the `ollama` service definition within the `ai-backend` Nomad job.
This enables Traefik to automatically discover and route incoming requests to the Ollama service, making it accessible through the Traefik ingress.
The `OLLAMA_HOST` environment variable in the `ai-backend` Nomad job has been updated from `0.0.0.0` to `0.0.0.0:11434`.
This change ensures OLLAMA explicitly binds to the correct address and port, preventing potential connectivity issues or misconfigurations where the port might be omitted or incorrectly inferred.
