fix: restore ayanamsa state and keep tests hermetic

tests/test_ayanamsa_mode_ownership.py

@@ -0,0 +1,15 @@
+import re
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[1]
+
+
+def test_only_ayanamsa_utils_sets_process_sidereal_mode() -> None:
+    violations = []
+    for path in (ROOT / "scripts").rglob("*.py"):
+        if path.name == "ayanamsa_utils.py":
+            continue
+        if re.search(r"\bset_sid_mode\s*\(", path.read_text(encoding="utf-8")):
+            violations.append(str(path.relative_to(ROOT)))
+    assert violations == []

tests/test_full_technique_invocation_matrix.py

@@ -14,15 +14,16 @@ INDEX = ROOT / "references/oracle/evidence_packet_index_2026_07_19.json"
 
 
 @pytest.fixture(scope="module")
-def matrix_packet() -> dict:
+def matrix_packet(tmp_path_factory: pytest.TempPathFactory) -> dict:
+    output_dir = tmp_path_factory.mktemp("full-technique-invocation-matrix")
     subprocess.run(
-        [sys.executable, "scripts/full_technique_invocation_matrix.py"],
+        [sys.executable, "scripts/full_technique_invocation_matrix.py", "--output-dir", str(output_dir)],
         cwd=ROOT,
         check=True,
         text=True,
         capture_output=True,
     )
-    return json.loads(PACKET.read_text(encoding="utf-8"))
+    return json.loads((output_dir / PACKET.name).read_text(encoding="utf-8"))
 
 
 def test_full_matrix_scans_all_required_runtime_layers(matrix_packet: dict) -> None:

tests/test_gulika_ayanamsa_mode.py

@@ -0,0 +1,32 @@
+from datetime import datetime
+
+import pytest
+import swisseph as swe
+
+from scripts.gulika import calculate_gulika
+from ayanamsa_utils import DEFAULT_AYANAMSA_NAME, apply_ayanamsa
+
+
+def _moon_longitude() -> float:
+    jd = swe.julday(2000, 1, 1, 12.0)
+    return float(swe.calc_ut(jd, swe.MOON, swe.FLG_SWIEPH | swe.FLG_SIDEREAL)[0][0])
+
+
+@pytest.mark.parametrize(("previous", "requested"), [("lahiri", "raman"), ("raman", "lahiri")])
+def test_gulika_restores_process_ayanamsa(previous: str, requested: str) -> None:
+    try:
+        assert apply_ayanamsa(previous, swe)
+        before = _moon_longitude()
+
+        result = calculate_gulika(
+            datetime(1990, 1, 1, 12, 0),
+            lat=39.9042,
+            lon=116.4074,
+            tz=8,
+            ayanamsa=requested,
+        )
+
+        assert result["ayanamsa"] == requested
+        assert _moon_longitude() == pytest.approx(before, abs=1e-10)
+    finally:
+        apply_ayanamsa(DEFAULT_AYANAMSA_NAME, swe)

tests/test_muhurta_factor_only_scoring_packet.py

@@ -7,10 +7,10 @@ ROOT = Path(__file__).resolve().parents[1]
 PACKET = ROOT / "references/oracle/muhurta_factor_only_scoring_packet_2026_07_23.json"
 
 
-def test_muhurta_factor_only_packet_generator_captures_ten_factors():
+def test_muhurta_factor_only_packet_generator_captures_ten_factors(tmp_path: Path):
     data = json.loads(
         subprocess.check_output(
-            ["python3", "scripts/muhurta_factor_only_scoring_packet.py"],
+            ["python3", "scripts/muhurta_factor_only_scoring_packet.py", "--output-dir", str(tmp_path)],
             cwd=ROOT,
             text=True,
         )

tests/test_prashna_context.py

@@ -22,6 +22,8 @@ def test_prashna_context_uses_backend_chart_from_question_moment():
     assert packet["ascendant"]["degree"] >= 0
     assert "Sun" in packet["planets"]
     assert "question_timestamp" in packet
+    assert packet["ayanamsa"] == "lahiri"
+    assert packet["supporting_indicators"]["gulika"]["ayanamsa"] == "lahiri"
 
 
 def test_prashna_context_rejects_missing_time_or_non_wgs84_location():

tests/test_prashna_sphuta_oss_case_probe.py

@@ -7,8 +7,8 @@ ARTIFACT = ROOT / "references/oracle/prashna_sphuta_oss_case_probe_2026_07_20.js
 INDEX = ROOT / "references/oracle/evidence_packet_index_2026_07_19.json"
 
 
-def test_prashna_sphuta_oss_case_probe_runs_pyjhora_case_in_isolation():
-    data = json.loads(subprocess.check_output(["python3", "scripts/prashna_sphuta_oss_case_probe.py", "--date", "2026-07-20"], cwd=ROOT, text=True))
+def test_prashna_sphuta_oss_case_probe_runs_pyjhora_case_in_isolation(tmp_path: Path):
+    data = json.loads(subprocess.check_output(["python3", "scripts/prashna_sphuta_oss_case_probe.py", "--date", "2026-07-20", "--output-dir", str(tmp_path)], cwd=ROOT, text=True))
     assert data["scope"] == "prashna_sphuta_oss_case_probe"
     assert data["claim_status"] == "tooling_observation_only"
     assert data["license_boundary"] == "agpl_observation_only_do_not_vendor"

tests/test_standalone_ayanamsa_defaults.py

@@ -79,10 +79,10 @@ def test_solar_return_julian_datetime_helpers_work_without_greg_flag_constant():
     assert roundtrip.minute == 30
 
 
-def test_muhurta_sun_moon_helper_defaults_to_lahiri_after_global_raman_switch():
+def test_muhurta_sun_moon_helper_defaults_to_product_ayanamsa():
     jd = swe.julday(2026, 6, 25, 4.0)
-    expected_sun = _sidereal_lon(jd, swe.SUN, swe.SIDM_LAHIRI)
-    expected_moon = _sidereal_lon(jd, swe.MOON, swe.SIDM_LAHIRI)
+    expected_sun = _sidereal_lon(jd, swe.SUN, swe.SIDM_RAMAN)
+    expected_moon = _sidereal_lon(jd, swe.MOON, swe.SIDM_RAMAN)
 
     _apply_ayanamsa('raman')
     actual = _swisseph_sun_moon_lon(jd)
@@ -92,10 +92,10 @@ def test_muhurta_sun_moon_helper_defaults_to_lahiri_after_global_raman_switch():
     assert _angular_diff(actual[1], expected_moon) < 1e-9
 
 
-def test_cmd_muhurta_helper_defaults_to_lahiri_after_global_raman_switch():
+def test_cmd_muhurta_helper_defaults_to_product_ayanamsa():
     jd = swe.julday(2026, 6, 25, 4)
-    expected_sun = _sidereal_lon(jd, swe.SUN, swe.SIDM_LAHIRI)
-    expected_moon = _sidereal_lon(jd, swe.MOON, swe.SIDM_LAHIRI)
+    expected_sun = _sidereal_lon(jd, swe.SUN, swe.SIDM_RAMAN)
+    expected_moon = _sidereal_lon(jd, swe.MOON, swe.SIDM_RAMAN)
 
     _apply_ayanamsa('raman')
     sun, moon, has_swe = _get_sun_moon_lons(2026, 6, 25, hour=4)