// CRITICAL/** * Logging levels. */export type LogLevel = "debug" | "info" | "warn" | "error"; /** * Logger contract. */export interface Logger {  debug: (message: string, details?: Record<string, unknown>) => void;  info: (message: string, details?: Record<string, unknown>) => void;  warn: (message: string, details?: Record<string, unknown>) => void;  error: (message: string, details?: Record<string, unknown>) => void;} /** * Create a logger with a minimum level. * @param level - Minimum log level. * @returns Logger instance. */export const createLogger = (level: LogLevel): Logger => {  const priority: Record<LogLevel, number> = {    debug: 10,    info: 20,    warn: 30,    error: 40,  };   const shouldLog = (target: LogLevel): boolean => priority[target] >= priority[level];   const format = (message: string, details?: Record<string, unknown>): string => {    if (!details || Object.keys(details).length === 0) {      return message;    }    return `${message} ${JSON.stringify(details)}`;  };   return {    debug: (message, details): void => {      if (shouldLog("debug")) {        console.debug(format(message, details));      }    },    info: (message, details): void => {      if (shouldLog("info")) {        console.info(format(message, details));      }    },    warn: (message, details): void => {      if (shouldLog("warn")) {        console.warn(format(message, details));      }    },    error: (message, details): void => {      if (shouldLog("error")) {        console.error(format(message, details));      }    },  };}; /** * Resolve the log level from environment variables. * @param fallback - Default log level. * @returns Resolved log level. */export const resolveLogLevel = (fallback: LogLevel): LogLevel => {  const raw = process.env["VLLM_STUDIO_LOG_LEVEL"]?.toLowerCase();  if (raw === "debug" || raw === "info" || raw === "warn" || raw === "error") {    return raw;  }  return fallback;};