Document updater removal, explicit fc upgrades, and stopped production attempt
docs: record automatic TLS, Go-only application and exact validation
Clarify external user CD and default temporary certificate validation
Withdraw host certificate installation; document Compose correction pending acceptance
docs: explain shared HTTP-01 delegation for storage certificates
docs: prepare storage certificate control and serial STUN operations
docs: explain existing staging keys and explicit Compose access
docs: publish Gin storage architecture and operator safety guidance