fix: bound Budhaditya yoga under combustion (upstream 994638f0, Budha-Aditya part only)

A combust Mercury keeps the Budha-Aditya formation visible but downgrades it
to conditional. Upstream's other card-gating fields in the same hunk come
from separate commits and are not taken. TASK-upstream-sync5-20261002 U7.

(cherry picked from commit 994638f0)

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

scripts/yoga_engine.py

@@ -744,6 +744,21 @@ class YogaEngine:
                     "effects_en": list(rule.get("effects_en") or rule.get("effects", [])),
                     "strength_en": rule.get("strength_en") if strength == rule.get("strength") and rule.get("strength_en") else STRENGTH_EN.get(str(strength), str(strength)),
                 }
+                # Budha-Aditya is a conjunction witness, but a combust
+                # Mercury must not be presented as an unqualified full yoga
+                # (upstream yinduzhanxing 994638f0; sync5 U7).
+                if rule.get('id') == 'budhaditya_yoga':
+                    mercury = ctx.planets.get('Mercury') or {}
+                    if mercury.get('combust') is True:
+                        entry['condition_status'] = 'combustion_requires_review'
+                        entry['traditional_effects'] = entry['effects']
+                        entry['effects'] = []
+                        entry['strength'] = 'conditional'
+                        entry['combustion_witness'] = {
+                            'planet': 'Mercury',
+                            'combust': True,
+                            'claim_boundary': 'Do not treat Budha-Aditya as an unqualified benefic result while Mercury is combust.'
+                        }
                 dedup_key = rule.get("dedup_key") or rule["name"]
                 dedup_val = f"{dedup_key}:{m.get('combination', '')}"
                 if dedup_val in seen_dedup: