CodeOps for Codex 0.2.0-beta.6

• Keep single-document preflight audits scoped to their selected target while using related artifacts only as context.
• Bound corrective rescans, preserve finding identity by root cause, and stop cleanly when minor findings are explicitly accepted.
• Store narrow preflight evidence separately so sibling requirements and whole plans cannot advance from an out-of-scope pass.
• Add deterministic validation for preflight scope and convergence contracts.