- contract_checks.rs (846行) を facade 化 - 6モジュールへ分割(1 module = 1 contract): - terminator_targets.rs (208行) - Branch/Jump検証 - exit_bindings.rs (35行) - exit_bindings ↔ exit_phis - carrier_inputs.rs (145行) - carrier_inputs完全性 - boundary_creation.rs (160行) - B1/C2不変条件 - entry_params.rs (317行) - Entry param一貫性 - mod.rs (30行) - Facade - Total: 846 → 895行(+49行モジュール境界オーバーヘッド) - 意味論不変: エラータグ/ヒント文すべて保存 - Fail-Fast遵守: silent fallback追加なし - 検証: Build 0 errors / Pattern6 RC=9 / quick 154/154 PASS 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>