feat: create scoped language functions from native calls

crates/objects/src/README.md

@@ -7,7 +7,7 @@
 | [lib.rs](lib.rs) | 包边界、对象类型／ObjectStore 公开导出与独立存储 rustdoc 示例 |
 | [object.rs](object.rs) | Value、CompareOp、ObjectPayload、ObjectHeader、EndorObject、Record、NativeFunction |
 | [types.rs](types.rs) | 托管名义类型、显式 Object/Type 引导、继承查询、受管方法表／接收者绑定、类字段与原生构造委托 |
-| [native.rs](native.rs) | NativeContext、上下文原生函数、作用域根与非递归委托调用 |
+| [native.rs](native.rs) | NativeContext、上下文原生函数、作用域语言函数工厂、根与非递归委托调用 |
 | [changes.rs](changes.rs) | 合并变更批次、变更键与有界通知额度 |
 | [number.rs](number.rs) | Integer／Decimal／Rational／BinaryFloat／Complex 的无损表示和装箱载荷 |
 | [builtins.rs](builtins.rs) | String、Dict、Cell、Function、BaseException 载荷与 trace 边 |

crates/objects/src/native.rs

@@ -58,6 +58,20 @@ impl<'a> NativeContext<'a> {
         self.allocate(crate::Record)
     }
 
+    /// Build a language function under this native scope using validated code.
+    pub fn new_function(
+        &mut self,
+        name: impl Into<String>,
+        code: ObjectRef,
+        globals: ObjectRef,
+    ) -> Result<ObjectRef, VmError> {
+        let function = self
+            .store
+            .new_function(name, code, globals, vec![], vec![])?;
+        self.roots.push(function);
+        Ok(function)
+    }
+
     pub fn new_dict(&mut self) -> Result<ObjectRef, VmError> {
         let object = self.store.new_dict()?;
         self.roots.push(object);