Agent Skills: swarm-spawning

Covers how to create agents in Claude Code swarms -- subagents vs teammates, built-in agent type catalog (Bash, Explore, Plan, general-purpose, claude-code-guide), plugin agent types from compound-engineering, spawn backend selection (in-process, tmux, iterm2) with auto-detection logic, and environment variables injected into spawned agents. Use when choosing how to spawn an agent, selecting the right agent type, configuring or troubleshooting spawn backends, or passing env vars to teammates.