feat(controls): atom-inheritance schema-aware (text + jsonb source_citation)

Prod canonical_controls.source_citation ist text-mit-JSON (DB-Swap-Anomalie),
macmini ist jsonb. _art()-Helper nutzt pg_input_is_valid(col::text,'jsonb') +
(col::text)::jsonb->>'article' (PG16+) -> ein Skript fuer beide Schemata.
Prod-Apply 2026-06-21 verifiziert: Zitierfaehigkeit 6,8%->60,8% (+169.755),
Stichprobe 8/8 korrekt. macmini-Dry-Run 0 (idempotent, kein Regress).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

control-pipeline/scripts/atom_citation_inheritance.py

@@ -33,18 +33,21 @@ import sys
 
 DB_URL = os.getenv("DATABASE_URL", "postgresql://breakpilot:breakpilot@localhost:5432/breakpilot_db")
 
+def _art(alias: str) -> str:
+    """SQL for source_citation->>'article' that works whether the column is jsonb
+    (macmini) or text-containing-JSON (prod schema anomaly from the DB swap).
+    pg_input_is_valid (PG16+) guards rows with invalid JSON so the cast never errors."""
+    col = f"{alias}.source_citation"
+    return (
+        f"(CASE WHEN {col} IS NOT NULL AND pg_input_is_valid({col}::text, 'jsonb') "
+        f"THEN ({col}::text)::jsonb->>'article' ELSE NULL END)"
+    )
+
+
 # A row "needs" a citation when it has no article yet.
-_NEEDS = (
-    "(cc.source_citation IS NULL "
-    " OR cc.source_citation->>'article' IS NULL "
-    " OR cc.source_citation->>'article' = '')"
-)
+_NEEDS = f"({_art('cc')} IS NULL OR {_art('cc')} = '')"
 # A parent can supply one when it carries a real article.
-_PARENT_HAS = (
-    "p.source_citation IS NOT NULL "
-    "AND p.source_citation->>'article' IS NOT NULL "
-    "AND p.source_citation->>'article' <> ''"
-)
+_PARENT_HAS = f"({_art('p')} IS NOT NULL AND {_art('p')} <> '')"
 
 SQL_REPORT = f"""
 SET search_path TO compliance, public;