feat(cheap): T4 生产 create 路 genre 最小路由(brief→五类确定性词表·先验序=特异性降序·无命中回退通用) (M3 cutover 放行检查单增补)

- cheap_genre_route:纯词表路由(零 LLM/零 IO/确定性),规则表数据化单源(_GENRE_RULES 顺序即先验序:
  非遗>TRPG>经营>解谜>剧情,特异词前泛词后);映射对齐 GENRE_BY_TEMPLATE 五类模板
- cheap_service_driver:取代硬编码 scaffold_template=None——命中选 per-genre 黄金骨架+genre 透传丰富度评分
  (生产 create 路与 S5 bake_off 复验同轨);无命中 (None,None) 走通用 _template(路由只加不减)
- tests/test_genre_route:五类命中/无命中回退/多类共现先验序/GENRE_BY_TEMPLATE 一致性/确定性/脏输入 14 用例

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

cheap-worker/cheap_genre_route.py

@@ -0,0 +1,65 @@
+"""cheap_genre_route.py — brief → genre 确定性关键词路由(生产 create 路最小品类接线)。
+
+背景(M3 cutover plan「放行检查单增补 2026-07-04」):live Service 创建路 cheap_service_driver 此前硬编码
+scaffold_template=None,不选品类骨架、不透传 genre——W-GENRE 四件套(品类 skill/骨架/few-shot/评分尺)在
+生产 create 路不通电,而 S5 复验(bake_off)是显式传品类的,复验口径与放量后生产口径不同轨。本模块补最小
+路由:纯词表匹配、零 LLM、确定性(同 brief 恒同结果),词表映射到既有 GENRE_BY_TEMPLATE 的五类模板;
+无命中回退 None(走通用 _template,与旧行为一致——路由只加不减,失配面=原行为)。
+
+规则表数据化:_GENRE_RULES 是唯一规则源(顺序即先验序),改词表/调先验只动这一张表,不动逻辑。
+"""
+
+from typing import Optional, Tuple
+
+# 品类路由规则表(唯一规则源;列表顺序 = 先验序)。
+#   先验序依据:按【词面特异性】降序——特异词品类在前(非遗/TRPG 的词几乎不出现在别的品类 brief 里,
+#   误伤率最低),泛词品类垫后(「剧情/故事」在各品类 brief 里都常见,最易过泛匹配)。多类词共现时取
+#   序前者:如「经营一家店铺,顾客的故事各不相同」同时命中经营与剧情 → 判经营(特异性高者定品类,
+#   泛词只是修饰)。每条:(genre 键, scaffold 模板名, 关键词元组)——genre/模板对齐 cheap_verify.GENRE_BY_TEMPLATE。
+_GENRE_RULES: Tuple[Tuple[str, str, Tuple[str, ...]], ...] = (
+    # ① 非遗(heritage):非遗工艺词特异性最高,与其他品类零重叠。
+    ("heritage", "_template-feiyi", (
+        "非遗", "剪纸", "皮影", "刺绣", "年画", "扎染", "泥塑", "糖画", "风筝制作",
+        "传统工艺", "传统手艺", "民俗", "戏曲", "京剧", "昆曲", "陶艺", "木雕", "漆器",
+    )),
+    # ② TRPG:跑团/骰子/地下城词特异性高。
+    ("trpg", "_template-trpg", (
+        "trpg", "跑团", "骰子", "地下城", "龙与地下城", "dnd", "角色扮演冒险", "冒险者小队",
+        "桌面角色扮演", "属性检定", "掷骰",
+    )),
+    # ③ 经营(sim-business):开店/客人/生意词较特异(「服务」单字面泛,组合词收窄)。
+    ("sim-business", "_template-shop", (
+        "经营", "开店", "店铺", "商店", "餐厅", "饭店", "奶茶店", "咖啡店", "咖啡馆", "面馆",
+        "小卖部", "杂货店", "顾客", "客人", "接客", "点单", "上菜", "生意", "收银", "摆摊",
+    )),
+    # ④ 解谜(puzzle):谜题/推理词。
+    ("puzzle", "_template-puzzle", (
+        "解谜", "谜题", "谜语", "推理", "密室", "华容道", "数独", "拼图", "解密", "机关",
+        "找不同", "找茬",
+    )),
+    # ⑤ 剧情(narrative):故事/分支词最泛,垫底(仅当没有更特异品类命中时才路由到剧情)。
+    ("narrative", "_template-story", (
+        "剧情", "故事", "文字冒险", "互动小说", "视觉小说", "对话选择", "分支", "多结局",
+        "章节", "叙事",
+    )),
+)
+
+
+def route_genre(brief: Optional[str]) -> Tuple[Optional[str], Optional[str]]:
+    """把用户 brief 确定性路由到 (scaffold_template, genre);无命中 → (None, None) 走通用模板(原行为)。
+
+    匹配口径:大小写不敏感的子串包含(brief 是自然语言短句,词表词都是低歧义中文词/固定拼写,子串够用、
+    不引分词依赖);按 _GENRE_RULES 先验序扫,首个命中即定(多类词共现取先验序前者)。空/非字符串 brief
+    → 无命中回退。纯函数、零 IO、零 LLM——同 brief 恒同结果(生产路由必须可复验)。
+
+    Returns:
+        (scaffold_template, genre):如 ("_template-shop", "sim-business");无命中 (None, None)。
+    """
+    if not brief or not isinstance(brief, str):
+        return None, None
+    text = brief.lower()
+    for genre, template, keywords in _GENRE_RULES:
+        for kw in keywords:
+            if kw.lower() in text:
+                return template, genre
+    return None, None

cheap-worker/cheap_service_driver.py

@@ -219,8 +219,15 @@ async def drive_cheap_generation(job: dict, *, base_url: str | None = None, user
     brief = job.get("brief") or ""
     t0 = time.time()
 
-    # create 路默认参(对齐现 _default_run_fn):通用 scaffold(无 per-genre 模板)、通用系统提示、write_whitelist=None。
-    scaffold_template = None
+    # create 路参数:brief→genre 确定性关键词路由(T4 最小品类接线,取代硬编码 scaffold_template=None)。
+    #   命中五类(经营/剧情/TRPG/非遗/解谜)→ 选 per-genre 黄金骨架 + genre 透传丰富度评分(生产 create 路
+    #   与 S5 bake_off 复验口径同轨);无命中 → (None, None) 走通用 _template(与旧行为一致,路由只加不减)。
+    #   write_whitelist=None(create 不收窄,对齐现 _default_run_fn)。
+    from cheap_genre_route import route_genre  # noqa: PLC0415
+
+    scaffold_template, genre = route_genre(brief)
+    if scaffold_template:
+        print(f"[cheap-driver] game={game_id} 品类路由命中:genre={genre} template={scaffold_template}", flush=True)
     scaffold_desc = None
     write_whitelist = None
     # 失控兜底轮数(与三闸 150 对齐;成本上界=max_repairs=6 优雅终止,而非轮数闸;放开防单 POST 多续修被 EXCEED_MAX_ITERS 提前切断)。
@@ -318,8 +325,9 @@ async def drive_cheap_generation(job: dict, *, base_url: str | None = None, user
     summary = _build_summary(game_id, brief, verdict, svc, turn, t0)
 
     # ⑩ reply 外收口:非阻塞丰富度 LLM 评分(additive;不进 verdict、不改 ok;token 不污染生成成本台账)。
+    #    genre 透传(T4):品类路由命中时同一次评分 additive 追加品类扩展条目(与 run_studio 的 genre 参数同义)。
     try:
-        summary["richness"] = await cheap_verify.verify_richness(game_id, brief=brief)
+        summary["richness"] = await cheap_verify.verify_richness(game_id, brief=brief, genre=genre)
         rv = summary["richness"]
         print(f"[cheap-driver] game={game_id} 丰富度 score={rv.get('score')}/{rv.get('max')} "
               f"groups={rv.get('groups')} degraded={rv.get('degraded')}", flush=True)

cheap-worker/tests/test_genre_route.py

@@ -0,0 +1,113 @@
+"""test_genre_route.py — brief→genre 确定性关键词路由单测(T4 生产 create 路品类接线)。
+
+守的不变量:五类各自命中且映射到 GENRE_BY_TEMPLATE 登记的模板;无命中回退 (None, None)(=旧通用行为);
+多类词共现取先验序(特异性高者胜);空/脏输入不炸;确定性(同 brief 恒同结果)。
+
+跑:cheap-worker/.venv/bin/python -m pytest cheap-worker/tests/test_genre_route.py -v
+"""
+
+import sys
+from pathlib import Path
+
+sys.path.insert(0, str(Path(__file__).resolve().parents[1]))  # → cheap-worker/
+from cheap_genre_route import route_genre  # noqa: E402
+from cheap_verify import GENRE_BY_TEMPLATE  # noqa: E402
+
+
+# ───────────────────────── 五类命中 ─────────────────────────
+
+def test_sim_business_hits():
+    for brief in ("经营一家奶茶店", "开店卖包子招待顾客", "餐厅上菜小游戏", "收银台接客人"):
+        t, g = route_genre(brief)
+        assert (t, g) == ("_template-shop", "sim-business"), brief
+
+
+def test_narrative_hits():
+    for brief in ("一个多结局的文字冒险", "互动小说,对话选择推动剧情", "分支叙事小游戏"):
+        t, g = route_genre(brief)
+        assert (t, g) == ("_template-story", "narrative"), brief
+
+
+def test_trpg_hits():
+    for brief in ("跑团风格的冒险", "掷骰过检定的 TRPG", "地下城探险,骰子决定命运"):
+        t, g = route_genre(brief)
+        assert (t, g) == ("_template-trpg", "trpg"), brief
+
+
+def test_heritage_hits():
+    for brief in ("剪纸主题小游戏", "体验非遗皮影戏", "做一款刺绣传统工艺游戏"):
+        t, g = route_genre(brief)
+        assert (t, g) == ("_template-feiyi", "heritage"), brief
+
+
+def test_puzzle_hits():
+    for brief in ("华容道解谜", "一个密室逃脱谜题", "数独小游戏"):
+        t, g = route_genre(brief)
+        assert (t, g) == ("_template-puzzle", "puzzle"), brief
+
+
+# ───────────────────────── 无命中回退(=旧通用行为)─────────────────────────
+
+def test_no_hit_falls_back_to_none():
+    for brief in ("一个简单的点击得分小游戏", "接住掉落的水果", "打砖块"):
+        assert route_genre(brief) == (None, None), brief
+
+
+def test_empty_and_dirty_input():
+    for brief in (None, "", 123, [], {}):
+        assert route_genre(brief) == (None, None)
+
+
+# ───────────────────────── 多类共现取先验序 ─────────────────────────
+
+def test_cooccurrence_specific_beats_generic():
+    """经营词 + 剧情泛词共现 → 判经营(特异性高者定品类,泛词只是修饰;先验序=规则表序)。"""
+    t, g = route_genre("经营一家小店,每位顾客都有自己的故事")
+    assert (t, g) == ("_template-shop", "sim-business")
+
+
+def test_cooccurrence_heritage_beats_business():
+    """非遗词 + 经营词共现 → 判非遗(非遗特异性序最前:『经营剪纸铺』的灵魂是剪纸)。"""
+    t, g = route_genre("经营一家剪纸铺,传承传统手艺")
+    assert (t, g) == ("_template-feiyi", "heritage")
+
+
+def test_cooccurrence_trpg_beats_narrative():
+    t, g = route_genre("跑团故事:骰子决定每章剧情走向")
+    assert (t, g) == ("_template-trpg", "trpg")
+
+
+# ───────────────────────── 一致性 ─────────────────────────
+
+def test_templates_registered_in_genre_by_template():
+    """路由产出的每个模板都必须在 GENRE_BY_TEMPLATE 登记,且 genre 键一致(不造孤儿模板/键漂移)。"""
+    from cheap_genre_route import _GENRE_RULES
+
+    for genre, template, _ in _GENRE_RULES:
+        assert GENRE_BY_TEMPLATE.get(template) == genre, \
+            f"规则表 {template}→{genre} 与 GENRE_BY_TEMPLATE({GENRE_BY_TEMPLATE.get(template)})漂移"
+
+
+def test_deterministic():
+    """确定性:同 brief 重复路由恒同结果(生产路由必须可复验)。"""
+    brief = "经营奶茶店的故事"
+    assert all(route_genre(brief) == route_genre(brief) for _ in range(5))
+
+
+def test_case_insensitive():
+    assert route_genre("一场 DND 冒险")[1] == "trpg"
+    assert route_genre("一场 dnd 冒险")[1] == "trpg"
+
+
+if __name__ == "__main__":
+    _fns = [v for k, v in sorted(globals().items()) if k.startswith("test_") and callable(v)]
+    _failed = 0
+    for _fn in _fns:
+        try:
+            _fn()
+            print(f"  PASS {_fn.__name__}")
+        except Exception as e:  # noqa: BLE001
+            _failed += 1
+            print(f"  FAIL {_fn.__name__}: {type(e).__name__}: {e}")
+    print(f"\n{len(_fns) - _failed}/{len(_fns)} passed")
+    sys.exit(1 if _failed else 0)