chore: clean up swarm framework and stage source files

Update orchestrator log.

Add support for 'tmux' request type in orchestrator and stage related changes.

Update orchestrator hanging check to always check for prompts and increase snippet size.

Refactor swarm framework: enforce communication boundaries, update documentation, and improve tmux grid setup. Add orchestrator SKILL.md.

Update swarm orchestrator and bootstrap scripts

feat: Add swarm framework and orchestration skills