Troubleshoot GKE TPU reservation stockouts caused by leaked node pool capacity

Use this skill to diagnose and resolve GKE TPU node pool creation or scale-up failures that fail with GCE_STOCKOUT, ZONE_RESOURCE_POOL_EXHAUSTED, or ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS (or queue due to lack of capacity) even though they target a specific Compute Engine TPU reservation.