Function safeKey

server/src/training-agent/state.ts:344–348

(value: string | undefined, max: number, pattern: RegExp)

const SAFE_ACCOUNT_ID_RE = /^[a-zA-Z0-9._-]+$/;

function safeKey(value: string | undefined, max: number, pattern: RegExp): string | null {
  if (!value || value.length === 0 || value.length > max) return null;
  if (!pattern.test(value)) return null;
  return value;
}

/** Derive a session key from the request context.
 *