📁 tg_bot_data/
  📁 cfg/     # config.json — API keys, settings
  📁 notes/   # {user_id}.json — per-user notes
  📁 tasks/   # {user_id}.json — per-user tasks
  📁 chats/   # {user_id}.json — AI conversation history
  📁 logs/    # messages.json — all messages log