feat(check): 偏离栏直读、响应错位判断；复查复用和硬预算（C2）

- deviation.py：模型判已响应的条目，证据所在表格行的偏离格写着「偏离 / 部分满足」等
  就改判负偏离；照抄要求格、响应格写的是别的内容的改判「响应可能对不上」
- reuse.py：按「提示词 + 要求 + 候选句原文」算缓存键，存模型原始结论；复查时内容没变、
  证据找得回的条目直接沿用，不调模型
- 每次检查送给模型的字数有上限，超出的条目列为请人工核对，写进覆盖范围
- 开发集 17 份：召回 61% → 73%，负偏离未说明 64% → 90%，规矩投标文件问题数不变

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

evals/check/run_check.py

@@ -25,7 +25,7 @@ from bid_doctor.ai import prompts
 from bid_doctor.ai import service as ai_service
 from bid_doctor.ai.providers.base import near_limit
 from bid_doctor.ai.service import OutputIncomplete, provider
-from bid_doctor.check import applicability, findings, match, rules
+from bid_doctor.check import applicability, deviation, findings, match, rules
 from bid_doctor.checklist import response_mode
 from bid_doctor.checklist import price
 from bid_doctor.checklist.extract import amount_yuan
@@ -184,6 +184,8 @@ async def main() -> None:
     ap.add_argument("--v1", action="store_true", help="第 1 步的做法：提示词 v1、不带同一行的单元格（对比基线）")
     ap.add_argument("--no-modes", action="store_true", help="不按响应方式和「要不要回答」筛选（C12 之前的做法）")
     ap.add_argument("--rules-only", action="store_true", help="只重跑规则检查，写回已有运行的 results.json")
+    ap.add_argument("--no-direct", action="store_true", help="不做偏离栏直读（对比用）")
+    ap.add_argument("--no-mismatch", action="store_true", help="不做响应错位判断（对比用）")
     args = ap.parse_args()
     d = OUT / args.bid
     manifest = json.loads((d / "manifest.json").read_text())
@@ -247,6 +249,10 @@ async def main() -> None:
         decisions = {i: applicability.decide(p, modes) for i, p in items.items()}
         items = {i: p for i, p in items.items() if decisions[i].match}
     results, stats = await match.run(ctx, uuid4(), items, docs, progress)
+    if not args.no_direct:
+        deviation.direct_read(results, docs)
+    if not args.no_mismatch:
+        deviation.mismatch_read(results, items, docs)
     if decisions:
         match.apply_modes(results, items, decisions)
         match.scanned_fallback(results, items, decisions, docs)