Update documentation for per-AZ ProjectQuota, FlavorGroupCapacity, and usage reconciler#833
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…reconciler
Reflect that ProjectQuota is now one CRD per (project × AZ) pair with naming
convention quota-{projectID}-{az}, document the usage reconciler that pre-computes
AssignedInstances and UsedResources into CommittedResource status, and add
FlavorGroupCapacity and ProjectQuota to the apis.md CRD overview.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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May 11, 2026
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This PR updates documentation to reflect recent architectural changes in the committed resource reservation system. The ProjectQuota CRD is now scoped per (project × availability zone) pair rather than one per project, using the naming convention quota-{projectID}-{az}. The Quota API creates one CRD per AZ combination, and a quota controller reconciles TotalUsage and PaygUsage into the status by watching CommittedResource and Hypervisor CRDs. The Report-Usage endpoint now reads pre-computed VM-to-commitment assignments from CommittedResource.Status fields (AssignedInstances, UsedResources, LastUsageReconcileAt, UsageObservedGeneration) populated by a dedicated usage reconciler, rather than computing assignments inline at request time. FlavorGroupCapacity and ProjectQuota CRD descriptions are added to the apis.md CRD overview section to complete the picture of scheduling-related custom resources.