feat(evals): 导出风格 B 改写输入；改正规范里 S01、S05 的响应方式记录；空偏离表注明「无偏离」

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

evals/check/export_rewrite.py

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+"""导出风格 B 改写的输入：从风格 A 的投标文件稿里取出要改写的表格行（evals/check/prompts/style-B.md）。
+
+    cd server && ../.venv/bin/python ../evals/check/export_rewrite.py <招标文件> [...]
+输出：evals/out/check/<招标文件>-B/rewrite-input.json（数组，字段 key、requirement、answer）。
+"""
+
+from __future__ import annotations
+
+import json
+import pathlib
+import sys
+
+OUT = pathlib.Path(__file__).resolve().parents[1] / "out" / "check"
+
+for tender in sys.argv[1:]:
+    spec = json.loads((OUT / f"{tender}-A" / "spec.json").read_text())
+    rows: dict[str, dict[str, str]] = {}
+    for v in spec["volumes"]:
+        for b in v["blocks"]:
+            cols = b.get("columns") or []
+            if b.get("type") != "table" or "requirement" not in cols or "answer" not in cols:
+                continue
+            for r in [*b["rows"], *(b.get("pool") or [])]:
+                if r.get("key") and r["key"] not in rows:
+                    rows[r["key"]] = {
+                        "key": r["key"],
+                        "requirement": r["cells"][cols.index("requirement")],
+                        "answer": r["cells"][cols.index("answer")],
+                    }
+    d = OUT / f"{tender}-B"
+    d.mkdir(exist_ok=True)
+    (d / "rewrite-input.json").write_text(json.dumps(list(rows.values()), ensure_ascii=False, indent=1))
+    print(tender, len(rows))