Invalid languages


`type`	`https://docs.frem.sh/reference/api/errors/invalid-languages`
HTTP status	`400` Bad Request

What it means

A SAST rule’s languages is missing, too long, or names a language fremforge does not support for custom rules.

Example detail messages returned with this error:

languages: 1 to 5 of bash, c, cpp, csharp, dockerfile, generic, go, html, java, javascript, json, kotlin, php, python, ruby, rust, scala, swift, terraform, typescript, yaml.

List 1 to 5 of the supported languages.

All fremforge API errors are RFC 9457 problem+json:

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

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