fix: 来源冲突比较升级为广告家族归一（meta/google/bing/yandex 家族）

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

server/tracker/services/attribution.py

@@ -19,8 +19,18 @@ from tracker import constants as C
 _CTRL_CHARS = re.compile(r"[\x00-\x1f\x7f]")
 _GENERIC_TLDS = ("com",)   # 引擎 host 落在这些 TLD 时不作为国家 variant 显示
 
-# UTM 标签 ↔ 平台名别名（冲突判定前归一）：缩写/中文品牌名 → 标准名；baidu 恒等仅为可读
-_UTM_ALIASES = {"fb": "facebook", "ig": "instagram", "tt": "tiktok",
+# 广告平台家族归一表（冲突判定前）：同一家族的各种写法（缩写/全称/带 ads 后缀/
+# 中文俄文别称）→ 家族名。fbclid 推出的 "Meta Ads" 与 utm_source=fb/ig 同属 meta
+# 家族 → 印证而非矛盾。键为去空格后的紧凑形态（"meta ads" → "metaads"）。
+_AD_FAMILIES = {
+    "fb": "meta", "facebook": "meta", "fbads": "meta",
+    "ig": "meta", "instagram": "meta", "meta": "meta", "metaads": "meta",
+    "google": "google", "googleads": "google", "adwords": "google",
+    "bing": "bing", "bingads": "bing", "microsoftads": "bing",
+    "yandex": "yandex", "yandexads": "yandex", "директ": "yandex",
+}
+# UTM 标签 ↔ 平台名别名（家族表之外的零散别名）；baidu 恒等仅为可读
+_UTM_ALIASES = {"tt": "tiktok",
                 "wa": "whatsapp", "g": "google", "baidu": "baidu", "百度": "baidu"}
 
 
@@ -94,8 +104,10 @@ def _in_app_name(ua: str) -> str:
 
 def _canon(name: str) -> str:
     """平台名/UTM 标签宽松归一（仅用于冲突判定）：小写 → 去协议与路径 → 去 www. 前缀
-    → 去最后一段域名后缀（chatgpt.com→chatgpt、google.ru→google）→ 别名表 → 仅留
-    字母数字（含汉字）。fb↔Facebook、百度↔baidu 归一后同源，不再误报 conflict。"""
+    → 去最后一段域名后缀（chatgpt.com→chatgpt、google.ru→google）→ 去空格（"meta
+    ads"→"metaads"）→ 家族表（fb/ig↔Meta Ads→meta；adwords→google；директ→yandex）
+    → 别名表 → 仅留字母数字（含汉字）。同广告家族（meta/google/bing/yandex）归一后
+    同源，不再误报 conflict。"""
     s = (name or "").lower().strip()
     if "://" in s:
         s = s.split("://", 1)[1]
@@ -104,6 +116,9 @@ def _canon(name: str) -> str:
         s = s[4:]
     if "." in s:
         s = s.rsplit(".", 1)[0]
+    s = re.sub(r"\s+", "", s)
+    if s in _AD_FAMILIES:               # 家族命中即返回家族名（已是规范 token）
+        return _AD_FAMILIES[s]
     s = _UTM_ALIASES.get(s, s)
     return re.sub(r"[^0-9a-z一-鿿]", "", s)
 

server/tracker/tests/test_attribution.py

@@ -145,6 +145,33 @@ def test_utm_chinese_alias_baidu_matches():
     assert r["detail"].get("utm_source") == "百度"
 
 
+# ------------------------------------------- 广告家族归一（付费点击参数 ↔ UTM 同家族）
+def test_fbclid_with_utm_fb_same_meta_family_combined():
+    r = classify(landing_path="/?fbclid=IwAR0", utm={"utm_source": "fb"})
+    assert r["channel"] == "paid_search" and r["platform"] == "Meta Ads"
+    assert r["resolution"] == "resolved" and r["evidence_kind"] == "combined"
+    assert r["detail"].get("utm_source") == "fb"       # fb ↔ Meta Ads 同 meta 家族
+
+
+def test_fbclid_with_utm_ig_combined():
+    r = classify(landing_path="/?fbclid=IwAR0", utm={"utm_source": "ig"})
+    assert r["platform"] == "Meta Ads"                 # ig 也在 meta 家族
+    assert r["resolution"] != "conflict" and r["evidence_kind"] == "combined"
+
+
+def test_gclid_with_utm_google_combined():
+    r = classify(landing_path="/offer?gclid=EAIaIQ", utm={"utm_source": "google"})
+    assert r["channel"] == "paid_search" and r["platform"] == "Google Ads"
+    assert r["resolution"] != "conflict" and r["evidence_kind"] == "combined"
+
+
+def test_fbclid_with_utm_tiktok_still_conflict():
+    r = classify(landing_path="/?fbclid=IwAR0", utm={"utm_source": "tiktok"})
+    assert r["resolution"] == "conflict"               # 跨家族（meta vs tiktok）= 真矛盾
+    assert r["detail"]["referrer_evidence"]["platform"] == "Meta Ads"
+    assert r["detail"]["utm_evidence"]["platform"] == "tiktok"
+
+
 def test_utm_only_is_label_only():
     r = classify(utm={"utm_source": "newsletter"})
     assert r["channel"] == "referral"               # 未知标签 → 有名 referral，但状态诚实标注