From 48d1dc2c37be9e4de33b4292e6925f9dae46601b Mon Sep 17 00:00:00 2001
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Date: Tue, 29 Sep 2026 17:29:26 +0800
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spec审查加固两项 + 会话中断导致的ثمن词损坏字节级修复。
223 passed 全绿,对抗样本双向验证通过。

Co-Authored-By: Claude Code <noreply@anthropic.com>
---
 app/services/boundary_filter.py | 17 ++++++++++++-----
 tests/test_boundary_filter.py   |  8 ++++++++
 2 files changed, 20 insertions(+), 5 deletions(-)

diff --git a/app/services/boundary_filter.py b/app/services/boundary_filter.py
index 47acc72..1d76b7e 100644
--- a/app/services/boundary_filter.py
+++ b/app/services/boundary_filter.py
@@ -49,8 +49,14 @@ PRICE_PATTERNS = [
     # ⚠️ (?<![a-z]) 字母后顾(与英文组 (?<![a-z]) 同款): 建材规格数字永远
     #    跟在拉丁字母后(DN800/SDR11/PN16/SCH40),后顾天然放行——实测
     #    "El precio del DN800 PE100..." 旧形态误杀,加后顾全放行且 HITS 全保
-    re.compile(r"\b(?:precio|costo|custo|preço|цена|стоимость|"
-               r"(?:ال)?سعر|(?:ال)?ثمن)\b[^\d\n]{0,20}(?<![a-z])\d", re.I),
+    # ⚠️ 复数/变格(spec 审查加固): precio?s?/costo?s?/custo?s?/preço?s?
+    #    (西葡 +s 复数;preço 的 ç 是词干,只放开 s——避免 "preç" 类
+    #    错拼形态);俄语 цен[аы]?(цена/цены/цен);阿语复数 أسعار。
+    #    \b 包裹不受影响——"customs" 中 costo?s? 无子串匹配(c 后是 u),
+    #    词边界防线依旧成立
+    re.compile(r"\b(?:precio?s?|costo?s?|custo?s?|preço?s?|цен[аы]?|"
+               r"стоимость|(?:ال)?سعر|(?:ال)?أسعار|(?:ال)?ثمن)\b"
+               r"[^\d\n]{0,20}(?<![a-z])\d", re.I),
     # 货币名词后置(数字+货币词): dólares/euros/рублей(西里尔 долларов
     # 由上方 стоимость 前置组兜住,不单列)
     # ⚠️ euros 排除 pallets 邻接——"50 euro pallets"(欧标托盘)是建材
@@ -149,12 +155,13 @@ PIVOTS_ES_CONTACT = [
 ]
 
 
-# Task 5: 语言路由三分支——汉字→ZH;西语特征(重音符/ñ/¿¡ 粗匹配,与
-# 汉字检测同构)→ES;否则 EN。葡语借道 ES 池(拉美沟通惯例相近)
+# Task 5: 语言路由三分支——汉字→ZH;西语特征(重音符/ñ/ç/ã/¿¡ 粗匹配,与
+# 汉字检测同构)→ES;否则 EN。葡语借道 ES 池(拉美沟通惯例相近;ç/ã 为
+# 葡语专属特征,"qual o preço?" 类纯 ç 短句也归 ES,spec 审查加固)
 def _lang_pool(user_msg: str):
     if re.search(r"[一-鿿]", user_msg or ""):
         return "zh"
-    if re.search(r"[áéíóúñ¿¡]", user_msg or ""):
+    if re.search(r"[áéíóúñãç¿¡]", user_msg or ""):
         return "es"
     return "en"
 
diff --git a/tests/test_boundary_filter.py b/tests/test_boundary_filter.py
index 153368f..a7abcfc 100644
--- a/tests/test_boundary_filter.py
+++ b/tests/test_boundary_filter.py
@@ -240,6 +240,11 @@ MULTILINGUAL_PRICE_HITS = [
     "500 dólares",                        # 数字+货币词后缀
     "Delivery in 15 días",                # 西语时间承诺
     "Срок 2 недели",                      # 俄语时间承诺
+    # 复数/变格形态(spec 审查加固: 单数 \b 形态天然排除复数)
+    "los precios son 500",                # 西语复数
+    "preços 500",                         # 葡语复数
+    "Цены: 1200",                         # 俄语复数
+    "الأسعار 500 دولار",                  # 阿语复数(定冠词+复数)
 ]
 
 # 建材规格形态: 不得误杀
@@ -284,6 +289,9 @@ def test_deflection_and_pivot_spanish_routing():
     )
     assert deflection_for("¿Cuánto cuesta?") in DEFLECTIONS_ES
     assert deflection_for("¿Cuánto cuesta?", has_contact=True) in DEFLECTIONS_ES_CONTACT
+    # 葡语 ç/ã 特征加固(spec 审查: "qual o preço?" 纯 ç,曾路由到 EN 池)
+    assert deflection_for("qual o preço?") in DEFLECTIONS_ES
+    assert pivot_for("qual o preço?") in PIVOTS_ES
     assert pivot_for("¿Me pasas el precio?") in PIVOTS_ES
     assert pivot_for("¿Me pasas el precio?", has_contact=True) in PIVOTS_ES_CONTACT
     # 既有二分支路由不回归: 汉字→ZH, 无西语特征→EN