[cmpadden]

Summary

• Add a foreground-only delegate tool for bounded tasks using an explicit provider/model ID.
• Support parallel delegation with up to three active children per session and a cancellable FIFO queue.
• Accept explicit existing cwd values for parent-prepared Worktrunk worktrees; the parent decides whether isolation is needed. No automatic worktree creation or cleanup.
• Show queued/running/final status, canonical cwd, queue time, execution time, streamed activity, and usage.
• Propagate cancellation/shutdown to running and queued calls; avoid transferring parent project trust to a different cwd.
• Document shared-checkout/security boundaries, Worktrunk preparation, hooks, dirty-state limitations, and deliberate cleanup.

Validation

• All 32 delegate tests passed twice using fake child processes (no paid model requests in tests).
• Coverage includes real overlapping children, concurrency cap, FIFO, queued cancellation, shutdown, failure recovery, cwd/trust, rendering, and live timing.
• Code review found no blocking defects.
• make format passed with no changes.
• make lint: all available checks passed; both ShellCheck hooks could not run because shellcheck is not installed.
• Reviewed the staged changes for secrets and machine-specific state.

Only the delegate extension is included; unrelated local configuration changes and the unpushed tmux commit are excluded.