Squid 1.9.1 Multi-pod concurrency correctness + at-rest secret encryption + disk self-heal completion. - Atomic one-active-deployment-per-concurrency-tag claim (#441) - Defer tentacle upgrade when a deployment script is in flight on the machine (#443) - Encrypt DeploymentAccount.Credentials / ExternalFeed.Password / Certificate.Password+Data at rest (#437/#438/#439) - Wire disk self-heal into K8s-agent local-exec mode (#440)