refactor(engine): simplify asset and code generation helpers

crates/engine/src/dev/dev_resources.rs

@@ -7,12 +7,12 @@
 //! capped) and never fetched or opened by the engine. A link added without a name is named after
 //! its URL (no page title is looked up).
 
-use figcraft_doc::*;
+use figcraft_doc::{DevResource, Document, NodeId, NodeKind};
 use serde_json::{Value, json};
 
 use crate::cmd::CommandSpec;
 use crate::components::{inside_instance, variant_set};
-use crate::params::*;
+use crate::params::{get, req_index, targets};
 use crate::{Result, Session, bad, spec};
 
 /// Most dev resources on one layer.