9df4f9bb84
Envelope-encryption (AES-256-GCM) secrets lib + Theme RCL UI + CLI for the
ZB.MOM.WW.* family. Pluggable IMasterKeyProvider (env/file/DPAPI), SQLite behind
an ISecretStore seam, ISecretResolver + ${secret:} config expander, HistorianGateway
as reference consumer. Cluster-sync seam + schema now, Akka replicator deferred.