refactor: 动态编译改经 CompilerService 注入，oxide_vm 去编译器依赖

crates/oxide_vm/tests/undeclared_read_tests.rs

@@ -6,6 +6,7 @@
 use std::sync::Arc;
 
 use oxide_compiler::compiler::Compiler;
+use oxide_compiler::DefaultCompilerService;
 use oxide_types::value::JsValue;
 use oxide_vm::vm::Vm;
 
@@ -14,12 +15,14 @@ fn eval(source: &str) -> Result<JsValue, String> {
     let program = oxide_parser::parse(&allocator, source).map_err(|e| format!("Parse: {:?}", e))?;
     let module = Compiler::new().compile(&program).map_err(|e| format!("Compile: {}", e))?;
     let mut vm = Vm::new();
+    vm.set_compiler_service(Arc::new(DefaultCompilerService));
     vm.run(&Arc::new(module))
 }
 
 /// 求值并取字符串结果内容（字符串值走 lookup_str，非字符串走 Display）。
 fn eval_str(source: &str) -> Result<String, String> {
     let mut vm = Vm::new();
+    vm.set_compiler_service(Arc::new(DefaultCompilerService));
     let allocator = oxide_parser::Allocator::default();
     let program = oxide_parser::parse(&allocator, source).map_err(|e| format!("Parse: {:?}", e))?;
     let module = Compiler::new().compile(&program).map_err(|e| format!("Compile: {}", e))?;