Function prefixMatchesModel

src/utils/model/modelAllowlist.ts:27–32

* Check if a model name starts with a prefix at a segment boundary. * The prefix must match up to the end of the name or a "-" separator. * e.g. "claude-opus-4-5" matches "claude-opus-4-5-20251101" but not "claude-opus-4-50".

(modelName: string, prefix: string)

 * e.g. "claude-opus-4-5" matches "claude-opus-4-5-20251101" but not "claude-opus-4-50".
 */
function prefixMatchesModel(modelName: string, prefix: string): boolean {
  if (!modelName.startsWith(prefix)) {
    return false
  }
  return modelName.length === prefix.length || modelName[prefix.length] === '-'
}

/**
 * Check if a model matches a version-prefix entry in the allowlist.