Overstory orchestrates coding agents with pluggable runtimes

Overstory is less a coding agent and more the glue layer around coding agents, which is exactly the kind of tooling that becomes valuable once single-agent workflows stop scaling.

• –It isolates workers in git worktrees and uses tmux for coordination, which makes parallel execution feel deliberate instead of improvised.
• –The `AgentRuntime` abstraction is the main unlock: you can swap in different CLI agents without rewriting the orchestration layer.
• –The project is honest about the tradeoffs, and that matters; multi-agent setups can amplify cost, merge conflicts, and debugging complexity fast.