fusion-ultimate-review

Plan → cross-model plan audit → self-correction → implement → cross-model implementation review → tweak, with NO user round-trips in between. Claude writes an in-depth plan, Codex audits the plan's decisions BEFORE any code exists (the reverse of a post-hoc review), Claude adjudicates, runs a pride gate, locks the plan, implements it, then Codex does a fast final review and Claude applies the tweaks. Use for any request worth getting right the first time — features, refactors, migrations, anything where a bad early decision is expensive to unwind. Triggers: "ultimate review", "/fusion:ultimate-review", "plan then build it properly", "have codex check the plan", "fuse claude and codex on this", "review before and after".