Merge worktree-agent: add struct literals, generics, print/log builtins

crates/el-compiler/src/codegen.rs

@@ -357,6 +357,17 @@ impl Codegen {
                 self.gen_expr(index)?;
                 self.emit(Bytecode::GetIndex);
             }
+            Expr::StructLit { type_name, fields, .. } => {
+                // Push each field value in declaration order
+                for (_, field_expr) in fields {
+                    self.gen_expr(field_expr)?;
+                }
+                let field_names: Vec<String> = fields.iter().map(|(n, _)| n.clone()).collect();
+                self.emit(Bytecode::BuildStruct {
+                    type_name: type_name.clone(),
+                    fields: field_names,
+                });
+            }
             // New expression kinds — push Nil as placeholder
             _ => {
                 self.emit(Bytecode::Push(Value::Nil));