v0.2.0

What's Changed

• feat: add /check health check command with rich card reply
• feat: add emoji reaction on user message after forwarding to agent
• feat: add /atim command and optimize ! shell command forwarding
• feat: add welcome message on bot added to group, add pre-commit hooks
• perf: prioritize Nerd Fonts in screenshot rendering
• docs: refine AGENTS.md with session discovery, routing, and release workflow