feat(narayana): Sanjay Rath profile replayed against the book tables; not wired (BUG-1215)
Round-4 ruling Q4. scripts/narayana_rath.py builds the Rath sequence from the rule ledger and book rows ported verbatim from upstream yinduzhanxing c7117f92 (sanjay_rath_narayana_book_ledger JSON + md, chara_narayana_book_golden_cases): Table 10 order (Saturn -> Table 11, Ketu -> reversed), years by jaimini_odd_footed_dignity_v2 with jaimini_dual_lord_source_v1, ADs twelve equal parts from the MD sign (Table 13 / 11 / 14), start sign by the existing select_narayana_seed_sign, ties reported as parameter_sensitive with both sequences. Given the book's start sign, Tables 15 / 17 / 18 match 36/36 MD signs and years. The start sign does not: Table 17 picks Virgo (book Pisces), Table 18 ties (book Cancer). Task red line 2: the profile stays out of every user-visible surface and out of scoring; T5 trial not run. A test pins that no script imports it. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01N4f2nya58RoRu4yEmJgRGE
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Jesse_Chen
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Claude Opus 5.5
Claude Opus 5.5
parent
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#!/usr/bin/env python3
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"""Narayana Dasha, Sanjay Rath profile (`sanjay_rath`) — research only (BUG-1215).
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Astrologer round-4 ruling 2026-10-03, Q4: the second time axis should be Sanjay
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Rath's Narayana Dasha (start from the stronger of Lagna and 7th, order by the
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start sign, dual lords by the traditional profile). The current product axis
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(`narayana_dasha.calc_narayana_mahadasha`) always starts from the Lagna and runs
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zodiacally; it is labelled `legacy_reference_only` on user-visible surfaces.
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This module builds the Rath sequence from the rule ledger ported from upstream
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yinduzhanxing c7117f92 (`references/oracle/sanjay_rath_narayana_book_ledger_2026_08_28.json`,
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`docs/research/sanjay_rath_narayana_book_ledger_2026_08_28.md`):
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- start sign: stronger of Lagna / 7th (`rath_md_start_stronger_lagna_seventh`),
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decided by the existing `narayana_dasha.select_narayana_seed_sign`; a tie
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(`later_narayana_sign_strength_rules_required`) gives
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`status: parameter_sensitive` and both sequences;
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- MD order: Table 10 by the start sign (`rath_md_general_order_table10`); Saturn
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in the start sign -> Table 11, zodiacal (`rath_saturn_start_exception`); Ketu
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in the start sign (no Saturn) -> Table 10 direction reversed (the reversal
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rule, `rath_ketu_reversal_exception`; the ledger tables only the AD form);
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- years: `jaimini_odd_footed_dignity_v2` (Upadesa 1.1.25-27 odd/even-footed
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count with the fixed-sign exception, exalted +1 / debilitated -1, ledger
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`upadesa_1125_1126_odd_even_count`, `upadesa_1127_fixed_sign_exception`,
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`upadesa_bphs_exalt_debil_adjustment`); Scorpio / Aquarius lords by
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`jaimini_dual_lord_source_v1` (`upadesa_dual_lord_strength_chain`, partial);
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- AD: twelve equal parts from the MD sign, Table 13 order; Saturn in the MD sign
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-> Table 11, Ketu -> Table 14 (`rath_ad_equal_twelfths`, `rath_ad_order_table13`).
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Not wired into scoring, consultation or reports: the three book tables
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(Table 15 / 17 / 18) are not all reproduced (see
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`docs/tasks/PROGRESS-astrologer-rulings-batch2-20261003.md`, task red line 2).
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"""
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from __future__ import annotations
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from typing import Any, Dict, List, Optional
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try: # scripts/ on sys.path
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import narayana_dasha as nd
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except ImportError: # pragma: no cover - package import
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from scripts import narayana_dasha as nd
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PROFILE = "sanjay_rath"
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DURATION_PROFILE = "jaimini_odd_footed_dignity_v2"
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DUAL_LORD_PROFILE = "jaimini_dual_lord_source_v1"
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SOURCE = ("Sanjay Rath, Narayana Dasa — rule ledger and Tables 10/11/13/14 "
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"(ported from upstream yinduzhanxing c7117f92)")
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SIGNS = nd.SIGNS
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def md_order(seed_sign_idx: int, planet_lons: Dict[str, float]) -> Dict[str, Any]:
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"""MD sign order for one start sign, with the rule that decided it."""
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saturn = nd._get_planet_sign("Saturn", planet_lons) == seed_sign_idx
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ketu = nd._get_planet_sign("Ketu", planet_lons) == seed_sign_idx
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if saturn:
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order = nd.build_narayana_sign_sequence(seed_sign_idx, profile="rath_saturn_table11_v1")
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direction = "table11_saturn_zodiacal"
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elif ketu:
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table10 = nd.build_narayana_sign_sequence(seed_sign_idx, profile="rath_general_table10_v1")
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order = [(2 * seed_sign_idx - sign) % 12 for sign in table10]
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direction = "table10_reversed_ketu"
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else:
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order = nd.build_narayana_sign_sequence(seed_sign_idx, profile="rath_general_table10_v1")
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direction = "table10_general"
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return {"order": order, "direction": direction, "saturn_in_seed": saturn, "ketu_in_seed": ketu}
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def _ad_order_profile(md_sign_idx: int, planet_lons: Dict[str, float]) -> str:
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if nd._get_planet_sign("Saturn", planet_lons) == md_sign_idx:
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return "rath_saturn_table11_v1"
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if nd._get_planet_sign("Ketu", planet_lons) == md_sign_idx:
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return "rath_ketu_table14_v1"
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return "rath_table13_v1"
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def mahadasha_sequence(seed_sign_idx: int, planet_lons: Dict[str, float],
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*, start_age: float = 0.0, cycle_count: int = 2) -> Dict[str, Any]:
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"""Rath MD rows from one start sign (cycle 2 = twelve minus cycle 1)."""
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order = md_order(seed_sign_idx, planet_lons)
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rows: List[Dict[str, Any]] = []
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cursor = float(start_age)
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for position, sign_idx in enumerate(order["order"], start=1):
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lord = nd._resolve_narayana_lord(sign_idx, planet_lons, dual_lord_profile=DUAL_LORD_PROFILE)
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lord_sign_idx = nd._get_planet_sign(lord, planet_lons)
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if lord_sign_idx is None:
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lord_sign_idx = sign_idx
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years, adjustment = nd.calculate_narayana_period_years(sign_idx, lord, lord_sign_idx, profile=DURATION_PROFILE)
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rows.append({
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"sign": SIGNS[sign_idx], "sign_idx": sign_idx, "lord": lord,
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"lord_in_sign": SIGNS[lord_sign_idx], "lord_sign_idx": lord_sign_idx,
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"years": years, "dignity_adjustment": adjustment, "cycle_index": 1,
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"period_key": f"narayana_rath:1:{position:02d}:{SIGNS[sign_idx]}",
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"start_age": round(cursor, 4), "end_age": round(cursor + years, 4),
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})
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cursor += years
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if cycle_count == 2:
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for position, first in enumerate(list(rows), start=1):
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years = 12 - first["years"]
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rows.append({**first, "years": years, "dignity_adjustment": None, "cycle_index": 2,
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"period_key": f"narayana_rath:2:{position:02d}:{first['sign']}",
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"start_age": round(cursor, 4), "end_age": round(cursor + years, 4)})
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cursor += years
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return {**order, "seed_sign": SIGNS[seed_sign_idx], "seed_sign_idx": seed_sign_idx, "mahadasha": rows}
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def antardasha(md_row: Dict[str, Any], planet_lons: Dict[str, float]) -> List[Dict[str, Any]]:
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"""Twelve equal ADs from the MD sign (Table 13 / 11 / 14)."""
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profile = _ad_order_profile(md_row["sign_idx"], planet_lons)
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rows = nd.subdivide_narayana_equal_order(
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md_row, start_sign_idx=md_row["sign_idx"], order_profile=profile, level="AD",
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parent_key="parent_md", parent_name=md_row["sign"],
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)
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return rows
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def calc_narayana_rath(lagna_sign_idx: int, planet_lons: Dict[str, float],
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*, seed_sign_idx: Optional[int] = None, cycle_count: int = 2) -> Dict[str, Any]:
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"""Rath Narayana Dasha for one chart.
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`seed_sign_idx` overrides the start sign (book-table replay only).
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"""
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if seed_sign_idx is not None:
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selection = {"status": "explicit", "selected_sign_idx": seed_sign_idx}
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else:
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selection = nd.select_narayana_seed_sign(lagna_sign_idx, planet_lons)
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base = {
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"profile": PROFILE,
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"duration_profile": DURATION_PROFILE,
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"dual_lord_rule": DUAL_LORD_PROFILE,
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"source": SOURCE,
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"lagna_sign": SIGNS[lagna_sign_idx],
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"seed_selection": selection,
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}
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if selection["status"] in ("selected", "explicit"):
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seq = mahadasha_sequence(selection["selected_sign_idx"], planet_lons, cycle_count=cycle_count)
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return {**base, "status": "partial_verified" if selection["status"] == "selected" else "explicit_seed",
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"seed_sign": seq["seed_sign"],
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"seed_basis": ("explicit_seed" if selection["status"] == "explicit"
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else "stronger_of_lagna_seventh:" + "+".join(selection.get("selection_levels", []))),
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"direction": seq["direction"], "mahadasha": seq["mahadasha"]}
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alternatives = {
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SIGNS[idx]: mahadasha_sequence(idx, planet_lons, cycle_count=cycle_count)
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for idx in (lagna_sign_idx, (lagna_sign_idx + 6) % 12)
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}
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lagna_seq = alternatives[SIGNS[lagna_sign_idx]]
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return {**base, "status": "parameter_sensitive", "reason": selection.get("reason"),
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"seed_sign": None, "seed_basis": "tie_lagna_seventh_both_listed",
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"direction": None, "mahadasha": None,
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"alternatives": {sign: {"seed_sign": seq["seed_sign"], "direction": seq["direction"],
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"mahadasha": seq["mahadasha"]} for sign, seq in alternatives.items()},
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"lagna_start_mahadasha": lagna_seq["mahadasha"]}
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