feat: VmHost trait 边界钉为单 realm 接口，跨 realm 值传递不挂 trait

Cargo.lock

@@ -1160,7 +1160,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_builtins"
-version = "0.8.65"
+version = "0.8.66"
 dependencies = [
  "chrono",
  "fast-float",
@@ -1185,7 +1185,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_bytecode"
-version = "0.8.65"
+version = "0.8.66"
 dependencies = [
  "num-bigint",
  "oxide_log",
@@ -1193,7 +1193,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_cfg"
-version = "0.8.65"
+version = "0.8.66"
 dependencies = [
  "oxide_bytecode",
  "oxide_emit",
@@ -1204,7 +1204,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_cli"
-version = "0.8.65"
+version = "0.8.66"
 dependencies = [
  "ansi_term",
  "bumpalo",
@@ -1225,7 +1225,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_code_cache"
-version = "0.8.65"
+version = "0.8.66"
 dependencies = [
  "lru",
  "oxide_bytecode",
@@ -1234,7 +1234,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_compiler"
-version = "0.8.65"
+version = "0.8.66"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1253,7 +1253,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_dce"
-version = "0.8.65"
+version = "0.8.66"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1267,7 +1267,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_emit"
-version = "0.8.65"
+version = "0.8.66"
 dependencies = [
  "num-bigint",
  "oxc_allocator",
@@ -1282,7 +1282,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_ir"
-version = "0.8.65"
+version = "0.8.66"
 dependencies = [
  "oxide_bytecode",
  "oxide_log",
@@ -1291,7 +1291,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_kernel"
-version = "0.8.65"
+version = "0.8.66"
 dependencies = [
  "bumpalo",
  "dashmap",
@@ -1306,7 +1306,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_liveness"
-version = "0.8.65"
+version = "0.8.66"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1318,7 +1318,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_log"
-version = "0.8.65"
+version = "0.8.66"
 dependencies = [
  "tracing",
  "tracing-appender",
@@ -1327,7 +1327,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_parser"
-version = "0.8.65"
+version = "0.8.66"
 dependencies = [
  "oxc_allocator",
  "oxc_ast",
@@ -1342,7 +1342,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_regalloc"
-version = "0.8.65"
+version = "0.8.66"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1358,7 +1358,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_runtime_api"
-version = "0.8.65"
+version = "0.8.66"
 dependencies = [
  "num-bigint",
  "num-traits",
@@ -1370,7 +1370,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_test262"
-version = "0.8.65"
+version = "0.8.66"
 dependencies = [
  "oxide_bytecode",
  "oxide_compiler",
@@ -1387,7 +1387,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_types"
-version = "0.8.65"
+version = "0.8.66"
 dependencies = [
  "bumpalo",
  "hashbrown 0.14.5",
@@ -1399,7 +1399,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_vm"
-version = "0.8.65"
+version = "0.8.66"
 dependencies = [
  "bumpalo",
  "chrono",

Cargo.toml

@@ -22,7 +22,7 @@ members = [
 ]
 
 [workspace.package]
-version = "0.8.65"
+version = "0.8.66"
 edition = "2021"
 license = "MIT"
 rust-version = "1.80"

crates/oxide_builtins/src/message_value.rs

@@ -8,6 +8,8 @@
 //! 为 well-known 符号映目标 realm 同 local_index、用户符号经描述重新 intern。
 //!
 //! 边界：
+//! - 两函数为独立函数，刻意不挂 `VmHost` trait：trait 是单 realm 接口，跨 realm
+//!   值传递不挂 trait（见 trait 文档边界条款），免污染单 realm 接口。
 //! - `MessageValue` 是树形（无共享引用间接），值图内循环引用报 DataCloneError；
 //!   共享引用（有向无环）复制为多份。
 //! - 装箱对象（Boolean/Number/String 盒、BigInt 包装）传递时解箱为原始值。

crates/oxide_runtime_api/src/host.rs

@@ -10,6 +10,13 @@ use oxide_types::value::JsValue;
 ///
 /// 方法签名是 `Vm` 上同名固有方法的逐字节拷贝；`impl VmHost for Vm` 委托给
 /// 它们。trait 刻意保持扁平且非对象安全——builtins 始终接受 `&mut impl VmHost`。
+///
+/// 边界：本 trait 是单 realm 接口——所有方法只作用于所属 VM 的当前 realm，
+/// 不含跨 realm（跨线程）值传递方法。跨 realm 值传递由
+/// `oxide_builtins::message_value` 的独立函数实现（源 realm 侧 `detach_message`、
+/// 目标 realm 侧 `rehydrate_message`，经 `MessageValue` 中间表示），不挂本 trait，
+/// 免污染单 realm 接口。trait 亦无 realm 查找方法：`realm_id` 只用于符号编码
+/// （符号身份 = (realm 编号, 局部下标) 的 realm 维度），不用于查找他 realm 对象。
 pub trait VmHost {
     // 寄存器访问
     fn reg(&self, idx: u8) -> JsValue;