0ce11f6f4d
Add a new skill that teaches agents how to format messages using Slack's mrkdwn syntax. Updates agent CLAUDE.md files to detect channel type from folder name prefix and use appropriate formatting. - container/skills/slack-formatting/SKILL.md: comprehensive mrkdwn reference - groups/global/CLAUDE.md: channel-aware formatting instructions - groups/main/CLAUDE.md: same, plus emoji shortcode examples https://claude.ai/code/session_01W44WtL2gRETr9YBB6h62YM