- Add /deepen-plan command that enhances plans with parallel research agents - Each plan section gets its own sub-agent for best practices, performance, UI research - Update /workflows:plan to offer /deepen-plan as option 2 after plan creation - Auto-run /deepen-plan when using ultrathink mode for maximum depth 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>