feat: serve install-skill.sh from agentic.hosting

[dennisonbertram]

New users who get an API key have no easy way to install the Claude Code skills. Add a one-liner installer:

curl agentic.hosting/install-skill.sh | sh

What the script does

1. Creates ~/.claude/skills/agentic-hosting/ and ensures ~/.claude/commands/ exists
2. Downloads SKILL.md and all command files (deploy.md, status.md, logs.md, db.md) from GitHub raw
3. Prints setup instructions: set AH_URL and AH_KEY, then run /status

Implementation

• Add website/install-skill.sh to the repo
• Wire it up as a static route in the ah HTTP server (same pattern as install.sh)
• Source files pulled from https://raw.githubusercontent.com/dennisonbertram/agentic-hosting/main/.claude/...

Why

Currently the only way to get the skills is to git clone the whole repo and run Claude from inside it. The global install path makes the skills available from any project directory.