docs: 添加 Rustdoc 注释

crates/oxide_builtins/src/stubs.rs

@@ -5,27 +5,35 @@ fn stub_error<H: VmHost>(vm: &mut H, name: &str) -> NativeResult {
 }
 
 // Architecturally deferred — these features are excluded from the supported language subset by design.
+/// Stub for the `Proxy` global. Always throws a TypeError; Proxy is deferred by design.
 pub fn proxy_stub<H: VmHost>(vm: &mut H, _args: &[u8]) -> NativeResult {
     stub_error(vm, "Proxy")
 }
+/// Stub for the `BigInt` global. Always throws a TypeError; BigInt is deferred by design.
 pub fn bigint_stub<H: VmHost>(vm: &mut H, _args: &[u8]) -> NativeResult {
     stub_error(vm, "BigInt")
 }
+/// Stub for the `WeakMap` global. Always throws a TypeError; WeakMap is deferred by design.
 pub fn weakmap_stub<H: VmHost>(vm: &mut H, _args: &[u8]) -> NativeResult {
     stub_error(vm, "WeakMap")
 }
+/// Stub for the `WeakSet` global. Always throws a TypeError; WeakSet is deferred by design.
 pub fn weakset_stub<H: VmHost>(vm: &mut H, _args: &[u8]) -> NativeResult {
     stub_error(vm, "WeakSet")
 }
+/// Stub for the `WeakRef` global. Always throws a TypeError; WeakRef is deferred by design.
 pub fn weakref_stub<H: VmHost>(vm: &mut H, _args: &[u8]) -> NativeResult {
     stub_error(vm, "WeakRef")
 }
+/// Stub for the `FinalizationRegistry` global. Always throws a TypeError; deferred by design.
 pub fn finalization_registry_stub<H: VmHost>(vm: &mut H, _args: &[u8]) -> NativeResult {
     stub_error(vm, "FinalizationRegistry")
 }
+/// Stub for the `SharedArrayBuffer` global. Always throws a TypeError; deferred by design.
 pub fn shared_array_buffer_stub<H: VmHost>(vm: &mut H, _args: &[u8]) -> NativeResult {
     stub_error(vm, "SharedArrayBuffer")
 }
+/// Stub for the `Atomics` global. Always throws a TypeError; deferred by design.
 pub fn atomics_stub<H: VmHost>(vm: &mut H, _args: &[u8]) -> NativeResult {
     stub_error(vm, "Atomics")
 }