Create standalone browser port of LTX Athena with authenticated native API transport

frontend/lib/format.ts

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+// Human-readable byte size, e.g. 996_000_000 -> "949.9 MB". Binary units (1024).
+export function formatBytes(bytes: number): string {
+  if (bytes === 0) return '0 B'
+  const k = 1024
+  const sizes = ['B', 'KB', 'MB', 'GB', 'TB']
+  const i = Math.min(sizes.length - 1, Math.floor(Math.log(bytes) / Math.log(k)))
+  return `${(bytes / Math.pow(k, i)).toFixed(1)} ${sizes[i]}`
+}