diff --git a/app/resolve/scene_merge.py b/app/resolve/scene_merge.py
index 6af58f9..a1fc72b 100644
--- a/app/resolve/scene_merge.py
+++ b/app/resolve/scene_merge.py
@@ -221,6 +221,12 @@ def _coalesce_canonical_fields(keep: Scene, drop: Scene) -> None:
     if drop.title and len(drop.title) > len(keep.title or ""):
         keep.title = drop.title
         keep.title_normalized = drop.title_normalized
+    # created_at = najwcześniejsze "first seen" obu scen. NEW badge (apka) bazuje na
+    # created_at; gdy dedup wybierze świeży re-ingest/mirror jako `keep`, stara treść
+    # dostawałaby fałszywe NEW po merdżu (report f17799b3). Bierzemy min → zdeduplikowana
+    # scena zachowuje datę pierwszego pojawienia, nie datę re-ingestu.
+    if drop.created_at and keep.created_at and drop.created_at < keep.created_at:
+        keep.created_at = drop.created_at
 
 
 def _close_pending_candidates(