Implement message splitting for messages exceeding Telegram's 4096 character
limit. Update header branding, increase max_tokens to 4000, adjust END_HOUR
to 20, update default AI model, and revise documentation to reflect channel
setup instead of groups.
Adds comprehensive documentation for creating a Telegram bot, configuring
a group, and setting permissions. Updates TELEGRAM_CHAT_ID in .env to
the correct group identifier for automated messaging.
marco