Utility helpers for caneth.
(s: str) -> bytes
Parse a human-friendly hex string into bytes.
Accepts formats like (case-insensitive):
"12 34 56"
"0x12,0x34,0x56"
"12-34-56"
"12:34:56"
"123456"
Returns:
bytes: parsed byte sequence.
Raises:
ValueError: on odd-length hex without separators.