b1b3d84f57
Adds the build, Helm, PVC, and plugin deploy steps needed for the shared volume E2E approach. Uses the correct kubernetes-sigs Helm repo URL and overrides config.sessionTTL=0 to avoid schema validation error. This is the workflow counterpart to the deployment manifests and scripts already in this PR (PVC, values overlay, deploy script). Co-Authored-By: Paperclip <noreply@paperclip.ing>