Route pair metadata structurally

caption_metadata_routes.py

@@ -5,8 +5,10 @@ from dataclasses import dataclass
 from typing import Any, Callable
 
 try:
+    from . import formatter_input as input_policy
     from . import formatter_target as target_policy
 except ImportError:  # pragma: no cover - plain-script smoke tests
+    import formatter_input as input_policy
     import formatter_target as target_policy
 
 
@@ -308,7 +310,7 @@ def insta_of_pair_from_row_result(
     keep_style = request.keep_style
     pair_target = target_policy.pair_policy(request.target)
     target = pair_target.pair_target
-    if deps.clean_text(row.get("mode")).lower() != "insta/of":
+    if not input_policy.is_pair_metadata(row):
         return None
     soft_row = row.get("softcore_row")
     hard_row = row.get("hardcore_row")