fix: size k8s worker pvcs from artifact metadata

[MarcStdt]

Summary

• resolve scroll OCI manifest annotations before create-time worker materialization
• pass gg.druid.scroll.minDisk into Kubernetes pull worker actions
• request that storage size for newly created runtime PVCs, falling back to 1Gi when absent/invalid

Why

Fresh prod prebuild E2E CRs were getting 1Gi runtime PVCs even when artifacts declare larger minDisk values, causing large prebuild pulls to fail before routing.

Tests

• GOCACHE=/private/tmp/druid-go-cache go test ./internal/runtime/kubernetes
• GOCACHE=/private/tmp/druid-go-cache go test ./apps/druid/adapters/cli
• GOCACHE=/private/tmp/druid-go-cache go test ./internal/core/services/registry
• GOCACHE=/private/tmp/druid-go-cache go test ./apps/druid/core/services
• GOCACHE=/private/tmp/druid-go-cache go test ./...

[druid-infra]

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