feat: Temporal.PlainMonthDay.from——ISO 串解析/字段 bag/实例复制与 overflow 语义

crates/oxide_vm/src/bindings/bind_temporal.rs

@@ -974,6 +974,12 @@ pub fn bind_temporal(core: &Arc<KernelCore>, session: &KernelSession, global: &m
         .map_or(0, |props| props.len() as u32)
         .saturating_sub(1);
     plain_month_day_ctor.set_data_meta(length_pos, PropAttributes::new(false, false, true));
+    apply_binding_table(
+        world,
+        plain_month_day_ctor,
+        core,
+        &[("from", oxide_builtins::temporal::plain_month_day_from::<crate::vm::Vm> as *const (), 1)],
+    );
 
     let plain_month_day_proto_ptr = world.plain_month_day_proto.as_ptr() as *mut JsObject;
     let plain_month_day_proto = unsafe { &mut *plain_month_day_proto_ptr };