feat(narayana-rath): AD direction checked against p.51, book divergence listed (BUG-1225)

Round-6 ruling Q7: default by the AD start sign's odd/even (Table 13, as in
Table 25); Saturn in the MD sign -> always zodiacal (Table 11); Ketu ->
reversed (Table 14); both -> Ketu first. Each AD rule now carries
direction.book_divergence (p.47 J.S. 1.1.34; J.S. 2.4.31-32), not applied;
reference report shows one line, English twins added. Table 25 Taurus 12/12.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01N4f2nya58RoRu4yEmJgRGE

scripts/pl9_reader_english_terms.py

@@ -174,6 +174,20 @@ _PHRASES: dict[str, str] = {
     "| Rath MD | 星座 | 宫主 | 起始年龄 | 结束年龄 | 年数 |": "| Rath MD | Sign | Lord | Start age | End age | Years |",
     "| Rath AD | 星座 | 起始年龄 | 结束年龄 |": "| Rath AD | Sign | Start age | End age |",
     " 的子运：比较 ": " sub-periods: compare ",
+    # BUG-1225: narayana_legacy_label._ad_direction_lines_zh (AD direction + book divergence)
+    "- 子运方向：": "- AD direction: ",
+    "按子运起点星座奇偶（Table 13）": "by the odd/even of the AD start sign (Table 13)",
+    "大运星座有土星：一律顺行（Table 11）": "Saturn in the MD sign: always zodiacal (Table 11)",
+    "大运星座有计都：反向（Table 14）": "Ketu in the MD sign: reversed (Table 14)",
+    "（书内分歧，未采用：": " (book divergence, not applied: ",
+    "p.47（J.S. 1.1.34）看大运星座奇偶": "p.47 (J.S. 1.1.34) by the odd/even of the MD sign",
+    "J.S. 2.4.31–32 看大运星座或其宫主所落星座": "J.S. 2.4.31-32 by the MD sign or the sign its lord occupies",
+    " → 顺行；": " -> zodiacal; ",
+    " → 逆行；": " -> reverse; ",
+    " → 顺行）": " -> zodiacal)",
+    " → 逆行）": " -> reverse)",
+    "，顺行": ", zodiacal",
+    "，逆行": ", reverse",
     "，12 等分": ", twelve equal parts",
     # BUG-1214: tajika_year_lord.selection_basis_text (zh) → its en twin.
     "年盘不全，暂用 Muntha 主星": "Annual chart incomplete; Muntha sign lord used for now",