fix(scripts): _coerce_halacha לא מקבל is_binding (הוסר ב-INV-DM7)

הפרמטר `is_binding` הוסר מ-`_coerce_halacha` כשבוצע split rule_type→role
ב-INV-DM7. הבאג היה בשני סקריפטי ה-A/B:
- ab_halacha_codex.py — גרם לקריסה בריצה הראשונה
- ab_halacha_opus48.py — אותה שגיאה לטנטית

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

scripts/ab_halacha_codex.py

@@ -236,7 +236,7 @@ async def main():
 
     cleaned_b = []
     for raw in raw_b:
-        coerced = hx._coerce_halacha(raw, is_binding=is_binding)
+        coerced = hx._coerce_halacha(raw)
         if coerced is None:
             continue
         coerced["quote_verified"] = hx._verify_quote(coerced["supporting_quote"], full_text)

scripts/ab_halacha_opus48.py

@@ -173,7 +173,7 @@ async def main():
 
     cleaned_b = []
     for raw in raw_b:
-        coerced = hx._coerce_halacha(raw, is_binding=is_binding)
+        coerced = hx._coerce_halacha(raw)
         if coerced is None:
             continue
         coerced["quote_verified"] = hx._verify_quote(coerced["supporting_quote"], full_text)