Function readRegistry

readRegistry(hive: number, key: string, name: string): RegValue
Read a single registry value.

Return type mirrors the registry type:
- REG_SZ / REG_EXPAND_SZ → string
- REG_DWORD → number
- REG_QWORD → number (JS float64; exact up to 2^53)
- REG_MULTI_SZ → string[]
- REG_BINARY / other → Uint8Array
Parameters
- hive: number
  Root handle, e.g. HKCU
- key: string
  Subkey path, e.g. 'Software\\MyApp'
- name: string
  Value name
Returns RegValue
Example
```
const enabled = readRegistry(HKCU,
    'Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings',
    'ProxyEnable') as number;  // 0 or 1
```