Function doUpload

src/lib/sync.ts:63–66

(userId: string)

// Upload current localStorage state to Supabase
async function doUpload(userId: string): Promise<void> {
  lastUploadAt = Date.now();
  await uploadProgress(userId);
}

// Debounced upload — call after every save
let uploadTimer: ReturnType<typeof setTimeout> | null = null;