Replace :latest with @sha256: digest for acb-api, acb-evolver, acb-index-builder,
acb-matchmaker, and acb-worker. Add argocd-image-updater annotations to all five
deployments to auto-track future sha-* tag builds. Add missing deployment manifests
for index-builder, matchmaker, and worker.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
