new layer model

kiln-core/src/api/registry.rs

@@ -1,7 +1,7 @@
 use rhai::{Dynamic, Engine, ImmutableString};
 use crate::api::board::BoardRef;
 use crate::script::Registerable;
-use crate::utils::{ErrorSink, RegistryValue};
+use crate::utils::{LogSink, RegistryValue};
 
 /// The board's script registry, pushed into scope as the constant `Registry`.
 /// `get`/`set`/`get_or` methods let scripts read and write per-board key→value pairs
@@ -11,7 +11,7 @@ use crate::utils::{ErrorSink, RegistryValue};
 pub struct Registry(pub BoardRef);
 
 impl Registerable for Registry {
-    fn register(engine: &mut Engine, _error_sink: ErrorSink) {
+    fn register(engine: &mut Engine, _log_sink: LogSink) {
         engine.register_type_with_name::<Registry>("Registry");
 
         // Registry.get(key) -> Dynamic  — returns () if the key is absent.