$swarm — Parallel Agent Execution (Codex Tailoring) This override captures the Codex-native execution model for parallel work. The active runtime primitives are: - - - - Use for read-only discovery and for implementation workers. Core Rules 1. Only parallelize tasks with disjoint file ownership. 2. Give every worker an explicit file manifest and validation command. 3. Tell each worker it is not alone in the repo and must not revert unrelated edits. 4. Wait sparingly. Keep the lead agent doing useful non-overlapping work. 5. The lead agent validates, integrates, and closes the loop. Codex-Nati…