Function formatProgress

frontend/app.js:1455–1458

(progress)

    },

    formatProgress(progress) {
      const value = Number(progress || 0);
      return `${Math.max(0, Math.min(100, value)).toFixed(0)}%`;
    },

    formatTime(seconds) {
      const total = Math.max(0, Math.floor(Number(seconds || 0)));