Regex too complex


`type`	`https://docs.frem.sh/reference/api/errors/regex-too-complex`
HTTP status	`400` Bad Request

What it means

The custom pattern repeats more than 256 times ({n,m}) or nests groups more than 6 deep.

Simplify the pattern. See Custom patterns.

All fremforge API errors are RFC 9457 problem+json:

{
  "type": "https://docs.frem.sh/reference/api/errors/regex-too-complex",
  "title": "Bad Request",
  "status": 400,
  "detail": "..."
}

Branch on type, not on title or detail - those are human-readable and may be reworded.