Using Codex to debug and verify fixes in parallel
用Codex并行调试验证修复
The author uses Codex in temporary crabbox environments to recreate bug states, verify failures, apply fixes, and re-verify them, while running 10 sessions in parallel to avoid local state pollution and speed loss.
Why it matters: HKR-H/K/R all pass, but this is a single first-person workflow note, not a product release or benchmark. The 10-session Codex/crabbox setup earns featured-level practical signal, near the lower band.