Adding claude-code-dual-build to Development & Code Tools, alphabetically between Chrome Relay and Claude Code Terminal Title.
It's a Claude Code skill (/dual-build) that orchestrates symmetric Claude+Codex builds with mandatory bidirectional cross-review:
The cross-review is the load-bearing piece — different model families catch different bug classes. Worked example in the repo's EXAMPLES.md: Claude reviewing Codex's stop-button code caught a SIGKILL→ESRCH race + an ss permission-model UX bug the implementing model missed.
Repo includes a Claude Code plugin manifest, four custom subagents, an automated A/B test harness for grading vs. single-agent baseline, and a worked-examples gallery.