[verified] dedupe auto-map AI row ids

routers/exam/templates.py

@@ -543,12 +543,27 @@ def _map_first_pass_to_rows(template_id: str, first_pass: Dict[str, Any], pdf_by
     return {"questions": questions, "response_areas": response_areas, "boundaries": boundaries, "layout": layout}
 
 
+def _dedupe_rows_by_id(rows: List[Dict[str, Any]]) -> List[Dict[str, Any]]:
+    """Preserve first occurrence of stable AI row ids emitted by noisy OCR detectors."""
+    out: List[Dict[str, Any]] = []
+    seen: set[str] = set()
+    for row in rows:
+        row_id = row.get("id")
+        if row_id:
+            key = str(row_id)
+            if key in seen:
+                continue
+            seen.add(key)
+        out.append(row)
+    return out
+
+
 def _refresh_ai_rows(ctx: ExamContext, template_id: str, rows: Dict[str, List[Dict[str, Any]]]) -> None:
     sb = ctx.supabase
     for table in ("exam_response_areas", "exam_boundaries", "exam_template_layout", "exam_questions"):
         sb.table(table).delete().eq("template_id", template_id).eq("source", "ai").eq("confirmed", False).execute()
     for table, key in (("exam_questions", "questions"), ("exam_response_areas", "response_areas"), ("exam_boundaries", "boundaries"), ("exam_template_layout", "layout")):
-        payload = rows.get(key) or []
+        payload = _dedupe_rows_by_id(rows.get(key) or [])
         if payload:
             sb.table(table).insert(payload).execute()