Changes:
- Replace PollAnswerHandler with RawUpdateHandler
- Handle UpdateMessagePollVote instead of PollAnswer
- Parse options as Vector<bytes> per Telegram API spec
- Extract user_id from PeerUser properly
- Add test_kurigram_compat.py for validation
- Update STATISTICS_GUIDE.md with correct handler info
Fixes ImportError with kurigram's handler structure.
Now compatible with Telegram MTProto API Layer 222.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Azimkin
6c6ef263be