# R2-03 — spec_parser.go: 属性访问器

## 缺失方法

`MIoTSpecProperty` 缺少 `writable / readable / notifiable` 三个布尔访问器。

Python 中通过 `access` 属性 setter 自动设置：
```python
@access.setter
def access(self, value: list) -> None:
    self._writable = 'write' in value
    self._readable = 'read' in value
    self._notifiable = 'notify' in value
```

## 目标文件

`D:\miot\go-miot\spec_parser.go`

添加：
```go
func (p *MIoTSpecProperty) Writable() bool {
    for _, a := range p.Access {
        if a == "write" { return true }
    }
    return false
}
func (p *MIoTSpecProperty) Readable() bool { ... }
func (p *MIoTSpecProperty) Notifiable() bool { ... }
```