E M 00a6264030
chore: use zonal GKE cluster to reduce provisioning time
Switch cluster and all node pools from regional to zonal (`europe-west4-b`) to avoid the 40+ minute provisioning time of a regional (multi-zone) cluster. Adds a `zone` variable to the GKE module and cluster config, and updates the workflow's `gcloud get-credentials` call to use `--zone` instead of `--region`.
2026-04-23 17:10:08 +10:00
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