Add jyotish oracle evidence calibration gate

scripts/ayanamsa_utils.py

@@ -0,0 +1,77 @@
+#!/usr/bin/env python3
+"""Shared Swiss Ephemeris ayanamsa helpers.
+
+Swiss Ephemeris stores sidereal mode globally inside the process. Any helper
+that calls calc_ut(..., FLG_SIDEREAL) must set the intended mode explicitly.
+"""
+
+from __future__ import annotations
+
+from typing import Any
+
+try:
+    import swisseph as swe
+except ImportError:  # pragma: no cover
+    swe = None
+
+
+AYANAMSA_MODES = {
+    'lahiri': getattr(swe, 'SIDM_LAHIRI', 1) if swe else 1,
+    'raman': getattr(swe, 'SIDM_RAMAN', 3) if swe else 3,
+    'kp': getattr(swe, 'SIDM_KRISHNAMURTI', 5) if swe else 5,
+    'krishnamurti': getattr(swe, 'SIDM_KRISHNAMURTI', 5) if swe else 5,
+    'fagan_bradley': getattr(swe, 'SIDM_FAGAN_BRADLEY', 0) if swe else 0,
+    'djwhal_khul': getattr(swe, 'SIDM_DJWHAL_KHUL', 6) if swe else 6,
+    'sassanian': getattr(swe, 'SIDM_SASSANIAN', 16) if swe else 16,
+    'true_citra': getattr(swe, 'SIDM_TRUE_CITRA', 27) if swe else 27,
+}
+
+AYANAMSA_DISPLAY_NAMES = {
+    'lahiri': 'Lahiri',
+    'raman': 'Raman',
+    'kp': 'Krishnamurti/KP',
+    'krishnamurti': 'Krishnamurti/KP',
+    'fagan_bradley': 'Fagan-Bradley',
+    'djwhal_khul': 'Djwhal Khul',
+    'sassanian': 'Sassanian',
+    'true_citra': 'True Citra',
+}
+
+ACTIVE_AYANAMSA_NAME = 'lahiri'
+
+
+def normalize_ayanamsa_name(name: Any = None) -> str:
+    key = str(name or 'lahiri').strip().lower().replace('-', '_')
+    if key in ('krishnamurti_paddhati', 'krishnamurti/kp'):
+        key = 'kp'
+    return key if key in AYANAMSA_MODES else 'lahiri'
+
+
+def ayanamsa_display_name(name: Any = None) -> str:
+    key = normalize_ayanamsa_name(name)
+    return AYANAMSA_DISPLAY_NAMES.get(key, key.title())
+
+
+def current_ayanamsa_name(args: Any = None) -> str:
+    name = getattr(args, 'ayanamsa', None) if args is not None else None
+    return normalize_ayanamsa_name(name or ACTIVE_AYANAMSA_NAME)
+
+
+def apply_ayanamsa(name: Any = 'lahiri', swe_module: Any = None) -> bool:
+    """Set Swiss Ephemeris sidereal mode explicitly."""
+    global ACTIVE_AYANAMSA_NAME
+    module = swe_module or swe
+    if module is None:
+        return False
+    key = normalize_ayanamsa_name(name)
+    try:
+        module.set_sid_mode(AYANAMSA_MODES[key])
+    except Exception:
+        return False
+    ACTIVE_AYANAMSA_NAME = key
+    return True
+
+
+def sidereal_flags(swe_module: Any, ayanamsa_name: Any = 'lahiri') -> int:
+    apply_ayanamsa(ayanamsa_name, swe_module)
+    return getattr(swe_module, 'FLG_SWIEPH', 2) | getattr(swe_module, 'FLG_SIDEREAL', 65536)