fix tests

src/server/models/download.py

@@ -162,7 +162,7 @@ class DownloadRequest(BaseModel):
         ..., min_length=1, description="Series name for display"
     )
     episodes: List[EpisodeIdentifier] = Field(
-        ..., min_length=1, description="List of episodes to download"
+        ..., description="List of episodes to download"
     )
     priority: DownloadPriority = Field(
         DownloadPriority.NORMAL, description="Priority level for queue items"
@@ -187,7 +187,7 @@ class QueueOperationRequest(BaseModel):
     """Request to perform operations on queue items."""
 
     item_ids: List[str] = Field(
-        ..., min_length=1, description="List of download item IDs"
+        ..., description="List of download item IDs"
     )