diff --git a/docs/BUG_HISTORY.md b/docs/BUG_HISTORY.md
index 3f5f0f82..e91c9e59 100644
--- a/docs/BUG_HISTORY.md
+++ b/docs/BUG_HISTORY.md
@@ -17014,3 +17014,19 @@
 - 相关记录：BUG-1265
 - 复发自：无
 - 修复版本：本分支待发布
+
+## BUG-1266 | 木星相对月亮的增长宫被记成车格局
+
+- 状态：resolved
+- 首次发现：2026-10-07
+- 最近更新：2026-10-07
+- 影响面：`references/yoga_rules.json` 规则 `jupiter_upachaya_from_moon`；读这条规则名称或类别的瑜伽卡和报告
+- 用户现象：木星落在月亮的第 2、5、8 或 11 宫时被标成车格局，类别是 durbhaga
+- 触发条件：用规则表判断木星相对月亮的位置
+- 根因：这条规则的中文名写成「车格局（从月亮）」，类别写成 durbhaga，并挂了 Shakata-2。表达式看的是第 2、5、8、11 宫，还排除了与月亮成 1、4、7、10 的间距。增长宫是从月亮数的第 3、6、10、11 宫，只是几何配置，不是名为 Shakata 的格局。生成器里另一条 `shakata_yoga`（车格局）是不同规则，未改
+- 修复：中文名改为「木星位于月亮增长宫」，英文名不带 Yoga。类别改为 configuration。表达式改为 `(house_of('Jupiter') - house_of('Moon')) % 12 + 1` 落在 3、6、10、11。解释只陈述几何关系。卡片把未知类别收成 other，标签不再把这条叫成格局
+- 验证：`tests/test_yoga_upachaya_configuration.py`；`tests/test_yoga_rules_integrity.py`；`tests/test_report_english_dictionary.py`
+- 防复发：上述测试锁住名称、类别和四宫
+- 相关记录：无
+- 复发自：无
+- 修复版本：本分支待发布
diff --git a/references/yoga_rules.json b/references/yoga_rules.json
index 61dbaafb..e0bd3b82 100644
--- a/references/yoga_rules.json
+++ b/references/yoga_rules.json
@@ -3741,26 +3741,23 @@
     {
       "id": "jupiter_upachaya_from_moon",
       "name": "Jupiter in Upachaya from Moon",
-      "name_cn": "车格局（从月亮）",
-      "category": "durbhaga",
-      "source": "BPHS",
-      "bvr_id": "Shakata-2",
+      "name_cn": "木星位于月亮增长宫",
+      "category": "configuration",
+      "source": "Moon-relative Upachaya geometry (houses 3, 6, 10, 11); not a named yoga",
       "logic": {
         "type": "and",
         "conditions": [
           {
             "type": "custom",
-            "expr": "'Jupiter' in planets and 'Moon' in planets and house_of('Jupiter') in [2,5,8,11] and abs(house_of('Jupiter') - house_of('Moon')) not in [0,3,6,9]"
+            "expr": "'Jupiter' in planets and 'Moon' in planets and (house_of('Jupiter') - house_of('Moon')) % 12 + 1 in [3,6,10,11]"
           }
         ]
       },
       "effects": [
-        "财富波动",
-        "精神压力"
+        "木星相对月亮位于第3、6、10或11宫；只记录几何关系"
       ],
       "effects_en": [
-        "Fluctuating wealth",
-        "Mental stress"
+        "Jupiter occupies house 3, 6, 10, or 11 counted from the Moon; geometry only"
       ],
       "strength": "弱",
       "strength_en": "weak",
diff --git a/tests/test_yoga_upachaya_configuration.py b/tests/test_yoga_upachaya_configuration.py
new file mode 100644
index 00000000..fc4cbcce
--- /dev/null
+++ b/tests/test_yoga_upachaya_configuration.py
@@ -0,0 +1,47 @@
+"""Jupiter in the Moon's upachaya houses is a configuration, not Shakata (BUG-1266)."""
+
+from __future__ import annotations
+
+import json
+from pathlib import Path
+
+from scripts.yoga_engine import YogaEngine
+
+ROOT = Path(__file__).resolve().parents[1]
+RULES = ROOT / "references" / "yoga_rules.json"
+
+
+def _rule() -> dict:
+    rules = json.loads(RULES.read_text(encoding="utf-8"))["rules"]
+    return next(rule for rule in rules if rule["id"] == "jupiter_upachaya_from_moon")
+
+
+def _hits(moon_house: int, jupiter_house: int) -> list[dict]:
+    planets = {
+        "Moon": {"sign": "Aries", "house": moon_house, "degree": 10.0},
+        "Jupiter": {"sign": "Leo", "house": jupiter_house, "degree": 10.0},
+    }
+    return [row for row in YogaEngine(str(RULES)).detect(planets, "Aries") if row.get("rule_id") == "jupiter_upachaya_from_moon"]
+
+
+def test_rule_names_the_geometry_and_not_shakata() -> None:
+    rule = _rule()
+    assert rule["name_cn"] == "木星位于月亮增长宫"
+    assert rule["category"] == "configuration"
+    assert "bvr_id" not in rule
+    assert "Shakata" not in json.dumps(rule, ensure_ascii=False)
+    assert "瑜伽" not in rule["name_cn"] and "Yoga" not in rule["name"]
+    assert "3,6,10,11" in rule["logic"]["conditions"][0]["expr"]
+
+
+def test_relative_houses_3_6_10_11_match_and_5_does_not() -> None:
+    # Moon in house 1. House 3 is the 3rd from the Moon. House 5 is not an upachaya.
+    assert _hits(1, 3)
+    assert _hits(1, 6)
+    assert _hits(1, 10)
+    assert _hits(1, 11)
+    assert _hits(1, 5) == []
+    hit = _hits(1, 3)[0]
+    assert hit["category"] == "configuration"
+    assert hit["name_cn"] == "木星位于月亮增长宫"
+    assert hit["bvr_id"] is None