Service is now a proper struct with OnStart/OnStop/OnReload lifecycle
functions — not a registry wrapping any. Packages create Service{} with
typed fields, same pattern as Command and Option.
Result drops generics — Value is any. The struct is the container,
Value is the generic. No more Result[T] ceremony.
Service(name, Service{}) to register, Service(name) to get — both
return Result. ServiceFactory returns Result not (any, error).
NewWithFactories/NewRuntime return Result.
232 tests, 77.8% coverage.
Co-Authored-By: Virgil <virgil@lethean.io>
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