Add terminal UA detection, curl homepage, and agent skill embed
- middleware.ts: detect curl/wget/HTTPie/etc and rewrite / to /cli
- app/cli/route.ts: clean plain-text Markdown homepage for terminal clients
- page.tsx: add "Try in terminal" section with curl examples (j4ck.xyz,
jcsalterego.bsky.social, etc.); replace agent tab UI with embedded
skill.md viewer + single Copy button linking to agentskills.io
- FollowPrompt: fix "j4ck" → "jack" in fallback label text
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>