Function isRateLimitedForModel

src/auth.js:1087–1098

* Check if an account is rate-limited for a specific model.

(account, modelKey, now)

 * Check if an account is rate-limited for a specific model.
 */
function isRateLimitedForModel(account, modelKey, now) {
  // Global rate limit
  if (account.rateLimitedUntil && account.rateLimitedUntil > now) return true;
  // Per-model rate limit
  if (modelKey && account._modelRateLimits) {
    const until = account._modelRateLimits[modelKey];
    if (until && until > now) return true;
    // Clean up expired entries
    if (until && until <= now) delete account._modelRateLimits[modelKey];
  }
  return false;
}

/**
 * Report an error for an API key (increment error count, auto-disable).