We want to eliminate static secrets wherever it is practical. Long-lived tokens in Git variables, copied into Terraform backends, or baked into cluster manifests rot slowly, leak easily, and rarely map cleanly to who actually called the API. Workload identity federation is a better default: a platform OIDC identity proves this pipeline or this service account ran the job, and Thalassa issues short-lived access in exchange. The tcloud iam workload-identity-federation bootstrap command is one piece of that puzzle.