delay-model-gate-evaluatorlisted

# Delay Model Gate Evaluator Run these checks before promoting model changes into placement/CTS optimization. ## Gate-0: Contract and sign consistency ```bash ROOT=/mnt/research/Hu_Jiang/Students/Fang_Donghao/TAMU-ASAP07-BSPDN-BPR-V0.00 cd "$ROOT" python3 scripts/debug/check_delay_model_contract.py \ --input-tsv <merged_or_unified_tsv> \ --delta-sign back_minus_front \ --min-sign-acc 0.60 \ --out-prefix slurm_logs/04_delay_modeling/<tag>.contract ``` Use `--strict` for CI-style hard fail. ## Gate-1: Bucketed scorecard ```bash python3 scripts/debug/bucketed_delay_model_scorecard.py \ --input-tsv <merged_or_unified_tsv> \ --delta-sign back_minus_front \ --out-prefix slurm_logs/04_delay_modeling/<tag>.bucketed ``` ## Promotion criteria 1. Gate-0 sign contract passes. 2. Key buckets (long + high fanout) are not worse than HPWL. 3. Scorecard results are archived with clear run tag and data source. Load `references/metric_contract.md` before interpreting results.