Codex_goal_hook

Maintain long Codex tasks with built-in Goals enabled while using lifecycle hooks, subagent summarizers, and `.codex-goal/` files for compact external context. Use when a user wants goal mode to stay active, Main/root to coordinate and ask follow-up questions, subagents to do most implementation and summary work, or Codex context compaction to be supported by delegated summaries instead of disabling Goals.