day1-onboarding
High-risk skill: instructs downloading and executing remote installer scripts from `https://claude.ai/install.sh` and `https://claude.ai/install.ps1`, runs shell commands (e.g., `!cat`), and directs modifying `~/.claude/settings.json` to set `CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS`. The skill is an onboarding guide for Claude Code but contains explicit remote execution, network fetches, and agent-configuration writes.