fix: not using airdate when rename is first event in sonarr

clients/sonarr_client.py

@@ -222,7 +222,7 @@ class SonarrClient:
             import_date = earliest_import["date"]
             _log("INFO", f"Found import date: {import_date} for episode {episode_id}")
             
-            # Check if this looks like an upgrade by comparing to renames
+            # Check if this import is likely a recent re-download/upgrade
             if rename_events:
                 earliest_rename = min(rename_events, key=lambda x: x["date"])
                 rename_date = earliest_rename["date"]
@@ -232,10 +232,12 @@ class SonarrClient:
                     rename_dt = datetime.fromisoformat(rename_date.replace("Z", "+00:00"))
                     days_diff = (import_dt - rename_dt).days
                     
-                    # If import is significantly after rename, prefer rename date
+                    # If import is significantly after rename, this is likely a re-download
+                    # The original import likely happened much earlier (possibly lost from history)
+                    # Return None to trigger aired date fallback instead of using rename date
                     if days_diff > 30:
-                        _log("WARNING", f"Import {import_date} is {days_diff} days after rename {rename_date} - using rename date")
-                        return rename_date
+                        _log("WARNING", f"Import {import_date} is {days_diff} days after rename {rename_date} - this looks like a re-download, using aired date fallback")
+                        return None  # Trigger aired date fallback
                         
                 except Exception as e:
                     _log("DEBUG", f"Error comparing dates: {e}")