Agent Skills: delegate-work

Executor routing policy for ALL delegated work — pick the right model for every sub-agent and the right Codex variant for every implementation slice. Use whenever you are about to spawn a sub-agent/Task (research, review, QA, UI, search), whenever a desplega skill (implement-plan, v-implement, run-phase, run-step, research) is choosing executors for phases/steps, or when the user says "implement with codex", "delegate this", "which model should do this", or similar. Supersedes codex-implement (its worktree/exec mechanics live here).