As a cost management administrator running OpenShift on Google Cloud, I want to configure GCP cost integration so that I can view consolidated reports showing both my OpenShift workload costs and the underlying GCP Compute Engine, Persistent Disk, networking, and other service costs.

Definition of Done:

• [ ] GCP billing data is successfully ingested
• [ ] OpenShift nodes are mapped to their underlying Compute Engine instances
• [ ] Consolidated cost reports show both OpenShift and GCP costs
• [ ] Cost allocation works correctly across projects and OpenShift namespaces
• [ ] Integration tests validate data accuracy