Adds SKILL.md for channel-aware text formatting. When applied, converts
Claude's Markdown output to each channel's native syntax (WhatsApp,
Telegram, Slack) before delivery. Source code lives on the
skill/channel-formatting branch.
Co-Authored-By: Ken Bolton <ken@bscientific.com>
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
