Send Telegram Rich Messages via Bot API 10.x sendRichMessage: collapsible expandable blockquotes, details blocks, tables, checklists, code blocks, spoilers, date widgets, dividers, footers — all in ONE message. Contains LIVE-VERIFIED JSON shapes (many differ from the official docs!), a ready Python sender, a probe script, and the troubleshooting table of API error messages. Use when posting changelogs, reports, digests, or any formatted content to Telegram chats/threads/topics. Triggers: rich message, sendRichMessage, свёрнутый блок, collapsible block, expandable blockquote, TG post, changelog to Telegram, telegram formatting.
