fix(bhava): use the named mirrored equal-house strength profile

Upstream a4d4a249. Dig tables, Capricorn's first half, the sputa formula, and the benefic set now match jyotishganit_mirrored_equal_house_v2. Mercury is neutral. The result names that profile and does not call it a classical ruling. BUG-1385.

Co-Authored-By: Grok (agent loop)
Co-authored-by: Cursor <cursoragent@cursor.com>

tests/test_bhava_bala_vendor_profile.py

@@ -0,0 +1,71 @@
+"""Replay the vendored pure formula functions, not a second handwritten oracle.
+
+AST isolation avoids importing the vendor's unrelated Skyfield/network stack.
+This establishes bounded formula parity, not full-engine or classical authority.
+"""
+import ast
+import importlib.util
+from pathlib import Path
+from types import SimpleNamespace
+import sys
+
+import pytest
+from scripts import bhava_bala as local
+
+VENDOR=Path(__file__).resolve().parents[1]/'references/open_source_sources/jyotishganit/jyotishganit'
+
+
+@pytest.fixture
+def vendor(monkeypatch):
+    name='jyotishganit.core.constants'
+    spec=importlib.util.spec_from_file_location(name,VENDOR/'core/constants.py')
+    constants=importlib.util.module_from_spec(spec);spec.loader.exec_module(constants)
+    monkeypatch.setitem(sys.modules,name,constants)
+    names={'normalize','planet_longitude_from_sign','get_sputa_drishti_degree',
+           '_calculate_general_sputa','_calculate_planet_sputa',
+           'compute_bhava_adhipathi_bala','compute_bhava_dig_bala','compute_bhava_drik_bala',
+           'get_angular_distance_between_planets_and_house'}
+    path=VENDOR/'components/strengths.py'
+    parsed=ast.parse(path.read_text())
+    functions=[node for node in parsed.body if isinstance(node,ast.FunctionDef) and node.name in names]
+    assert {f.name for f in functions}==names
+    module=ast.Module(body=[ast.ImportFrom(module='__future__',names=[ast.alias(name='annotations')],level=0),*functions],type_ignores=[])
+    namespace=dict(vars(constants))
+    exec(compile(ast.fix_missing_locations(module),str(path),'exec'),namespace)
+    return SimpleNamespace(**namespace)
+
+
+@pytest.mark.parametrize('planet',['Sun','Moon','Mars','Mercury','Jupiter','Venus','Saturn'])
+def test_aspect_boundaries_against_vendor(vendor,planet):
+    angles=[-360,-210,0,1,15,29.99999,30,45,59.99999,60,75,89.99999,90,
+            105,119.99999,120,135,149.99999,150,165,179.99999,180,210,240,270,300,359.99999,360]
+    for angle in angles:
+        assert local._get_sputa_drishti(angle,planet)==pytest.approx(vendor.get_sputa_drishti_degree(angle,planet))
+
+
+@pytest.mark.parametrize('degree',[0.0001,14.9999,15,29.9999])
+def test_all_signs_at_all_house_indices(vendor,degree):
+    for sign in local.SIGNS:
+        chart=SimpleNamespace(houses=[SimpleNamespace(sign=sign,sign_degrees=degree) for _ in range(12)])
+        vendor.compute_bhava_dig_bala(chart)
+        assert local.calc_bhava_dig_bala([sign]*12,[degree]*12)==[h.bhava_dig_bala for h in chart.houses]
+
+
+def test_zero_degree_capricorn_uses_first_half():
+    # Vendor's `(sign_degrees or 15)` misclassifies exact zero; honor the
+    # explicit first-half boundary rather than copying that input bug.
+    assert local.calc_bhava_dig_bala(['Capricorn']*12,[0]*12)==local.BHAVA_STRENGTH_FROM_SIGN_NATURE['chatushpada']
+
+
+def test_full_component_replay_on_synthetic_chart(vendor):
+    positions={p:{'sign':local.SIGNS[i],'degree':3.75+i*2} for i,p in enumerate(('Sun','Moon','Mars','Mercury','Jupiter','Venus','Saturn'))}
+    strengths={p:300+i*20 for i,p in enumerate(positions)}
+    planets=[SimpleNamespace(celestial_body=p,sign=row['sign'],sign_degrees=row['degree'],shadbala={'Shadbala':{'Total':strengths[p]}}) for p,row in positions.items()]
+    houses=[SimpleNamespace(sign=s,sign_degrees=12.3,lord=local.SIGN_LORDS[s]) for s in local.SIGNS]
+    chart=SimpleNamespace(planets=planets,houses=houses)
+    vendor.compute_bhava_adhipathi_bala(chart);vendor.compute_bhava_dig_bala(chart);vendor.compute_bhava_drik_bala(chart)
+    got=local.calc_bhava_bala(local.SIGNS,[12.3]*12,'Aries',12.3,positions,strengths)
+    for row,h in zip(got['houses'],houses):
+        for key,expected in [('adhipathi_bala',h.bhava_bala_adhipathi),('dig_bala',h.bhava_dig_bala),('drik_bala',h.bhava_drik_bala)]:
+            assert row[key]==round(expected,2)
+        assert row['total']==round(h.bhava_bala_adhipathi+h.bhava_dig_bala+h.bhava_drik_bala,2)