feat(narayana): show the Sanjay Rath version beside the legacy one (T4, BUG-1218)

Display only; scoring and timing conclusions keep the legacy algorithm.
narayana_legacy_label attaches a Rath view (seed, deciding level, direction,
24 MDs, running MD/AD) under modules.narayana_dasha.rath for the consultation
modules, full reading Step 4.13 and the CLI. Reference report: one summary
line under the legacy line plus Rath MD / running-MD AD tables (English terms
added). Evidence card: narayana_rath (label, seed sign, level, running MD) on
timing / annual cards only — other cards sit at 11,979 of 12,000 characters.
Goldens re-captured from the real engine.

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

scripts/cmd_narayana_dasha.py

@@ -56,8 +56,9 @@ def cmd_narayana_dasha(args, chart_data):
         current_age=current_age,
         birth_year=birth_year,
     )
-    from narayana_legacy_label import label_legacy_narayana  # BUG-1215
-    label_legacy_narayana(result)
+    from narayana_legacy_label import label_legacy_narayana  # BUG-1215; Rath view BUG-1218
+    label_legacy_narayana(result, lagna_sign_idx=asc_idx, planet_lons=planet_lons,
+                          current_age=current_age, birth_year=birth_year)
 
     # 格式化输出
     lines = [
@@ -98,4 +99,20 @@ def cmd_narayana_dasha(args, chart_data):
     for line in result.get('interpretation', []):
         lines.append(f"  {line}")
 
+    rath = result.get('rath') or {}
+    if rath:
+        lines.append("")
+        lines.append(f"── {rath.get('algorithm_label')} ──")
+        if rath.get('seed_sign'):
+            lines.append(f"  起运宫: {rath['seed_sign']}（第 {rath.get('strength_level_decided')} 级：{rath.get('strength_level_text')}）；{rath.get('direction_text')}")
+            if rath.get('method_note'):
+                lines.append(f"  {rath['method_note']}")
+            for p in rath.get('mahadasha', [])[:12]:
+                lines.append(f"  {p['sign']:>12s} ({p['lord']:>7s}): {p['years']:2d}年  [{p['start_age']:5.1f}→{p['end_age']:5.1f}]")
+            rmd = (rath.get('current_dasha') or {}).get('md')
+            if rmd:
+                lines.append(f"  当前大运: {rmd['sign']}（{rmd['lord']}）{rmd['years']}年")
+        else:
+            lines.append(f"  起运宫未定（{rath.get('reason') or rath.get('status')}）")
+
     return "\n".join(lines)