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/build.py

@@ -366,8 +366,8 @@ def build(tender: str, bid: str, style: str, run: str) -> None:
             if f.get("only_deviations"):
                 devs = [r for r in src if r["deviation"] != "无偏离"]
                 rows = [_row(k, r, columns) for k, r in enumerate(devs, 1)]
-                empty = {"no": "1", "requirement": "—", "answer": "无偏离", "deviation": "无"}
-                rows = rows or [{"cells": [empty.get(c, "") for c in columns], "anchor": columns.index("answer")}]
+                empty = {"no": "1", "requirement": "—", "answer": "—", "deviation": "无偏离"}  # 苏采云范本：没有偏离时注明「无偏离」
+                rows = rows or [{"cells": [empty.get(c, "") for c in columns], "anchor": columns.index("deviation") if "deviation" in columns else 0}]
                 pool = [
                     _row(0, r, columns) for r in src if r["deviation"] == "无偏离"
                 ]  # 没列出的（默认接受）：注入时可以挑来写成偏离