Function byteToHex

byteToHex(byte: number): string
Converts a byte (0–255) to 2-digit uppercase hex string. Applies 0xFF mask for safety if input is out of range.
Parameters
- byte: number
Returns string
Example
```
byteToHex(255) → "FF"
```
Example
```
byteToHex(0)   → "00"
```
Example
```
byteToHex(256) → "00" (mask applied)
```
Example
```
byteToHex(-1)  → "FF" (mask applied)
```
- Defined in utils/hex.ts:33