fix(dignity): record Neecha Bhanga kendras and clip the first dasha from its full parent (BUG-1268, upstream 4a807e7d)

tests/test_neecha_bhanga_dignity_evidence.py

@@ -0,0 +1,73 @@
+"""Dignity-path Neecha Bhanga records the two kendra conditions (BUG-1268)."""
+
+from __future__ import annotations
+
+from datetime import datetime
+
+from scripts.jyotish_engine import (
+    _build_dignity_context,
+    _get_dignity_level,
+    _neecha_bhanga_evidence,
+    cmd_dasha,
+)
+
+
+def _capricorn_jupiter(**extra_planets):
+    planets = {
+        "Jupiter": {"sign": "Capricorn", "degree": 10.0, "house": 10},
+        "Moon": {"sign": "Gemini", "degree": 5.0, "house": 3},
+        "Mars": {"sign": "Leo", "degree": 5.0, "house": 5},
+    }
+    planets.update(extra_planets)
+    return planets
+
+
+def test_dispositor_kendra_from_lagna_is_checked_and_is_not_a_raja_yoga() -> None:
+    planets = _capricorn_jupiter(Saturn={"sign": "Aries", "degree": 4.0, "house": 1})
+    context = _build_dignity_context(planets)
+    assert context["Saturn"]["house"] == 1
+    evidence = _neecha_bhanga_evidence("Jupiter", "Capricorn", context)
+    assert evidence["conditions_checked"] == [
+        "dispositor_exalted",
+        "exaltation_lord_conjunct_debilitation_sign",
+        "dispositor_kendra_from_moon",
+        "dispositor_kendra_from_lagna",
+    ]
+    assert evidence["royal_yoga_label_allowed"] is False
+    assert "Raja Yoga" in evidence["claim_boundary"]
+    assert {row["condition"] for row in evidence["reasons"]} == {"dispositor_kendra_from_lagna"}
+    assert _get_dignity_level("Jupiter", "Capricorn", 10.0, context) == "NEECHA_BHANGA"
+
+
+def test_dispositor_kendra_from_moon_is_checked() -> None:
+    planets = _capricorn_jupiter(
+        Saturn={"sign": "Cancer", "degree": 4.0, "house": 5},
+        Moon={"sign": "Cancer", "degree": 8.0, "house": 5},
+    )
+    context = _build_dignity_context(planets)
+    evidence = _neecha_bhanga_evidence("Jupiter", "Capricorn", context)
+    assert {row["condition"] for row in evidence["reasons"]} == {"dispositor_kendra_from_moon"}
+    assert evidence["reasons"][0]["house_from_moon"] == 1
+
+
+def test_first_mahadasha_antardasha_keeps_the_unclipped_parent_start() -> None:
+    # 原值 / 新值 / 原因: 旧小运从截断后的可见段重排；新值保留未截断起点并裁掉出生前已结束的小运。
+    args = type("Args", (), {
+        "moon_lon": 79.0,
+        "nakshatra": None,
+        "pada": None,
+        "birthdate": "1990-01-15",
+        "today": "2026-05-04",
+    })()
+    first = cmd_dasha(args)["timeline"][0]
+    birth = datetime(1990, 1, 15)
+    assert first["is_balance"] is True
+    ads = first["antardasha_timeline"]
+    assert ads
+    for row in ads:
+        assert datetime.fromisoformat(row["start_datetime"]) >= birth
+        assert datetime.fromisoformat(row["end_datetime"]) > birth
+        assert "unclipped_start_datetime" in row
+    straddling = [row for row in ads if row["unclipped_start_datetime"] != row["start_datetime"]]
+    assert straddling
+    assert datetime.fromisoformat(straddling[0]["unclipped_start_datetime"]) < birth