polish for failed retry mechanic and consistent sub naming

backend/app/api/downloads.py

@@ -29,8 +29,10 @@ async def list_downloads():
     async with current_app.db_engine.connect() as conn:
         session = AsyncSession(bind=conn)
 
-        # Build query
-        query = select(Download)
+        # Build query - eager load source and subscription for labeling
+        query = select(Download).options(
+            selectinload(Download.source).selectinload(Source.subscription)
+        )
         count_query = select(func.count()).select_from(Download)
 
         filters = []
@@ -58,8 +60,20 @@ async def list_downloads():
         result = await session.execute(query)
         downloads = result.scalars().all()
 
+        # Include source info with each download
+        items = []
+        for d in downloads:
+            item = d.to_dict()
+            if d.source:
+                item["subscription_name"] = d.source.subscription.name if d.source.subscription else None
+                item["platform"] = d.source.platform
+            else:
+                item["subscription_name"] = None
+                item["platform"] = None
+            items.append(item)
+
         return jsonify({
-            "items": [d.to_dict() for d in downloads],
+            "items": items,
             "total": total,
             "page": page,
             "per_page": per_page,
@@ -147,8 +161,11 @@ async def recent_activity():
         session = AsyncSession(bind=conn)
 
         # Get failed downloads OR completed with files (noteworthy activity)
+        # Eager load source and subscription for labeling
         from sqlalchemy import or_
-        query = select(Download).where(
+        query = select(Download).options(
+            selectinload(Download.source).selectinload(Source.subscription)
+        ).where(
             and_(
                 Download.created_at >= cutoff,
                 or_(
@@ -164,8 +181,20 @@ async def recent_activity():
         result = await session.execute(query)
         downloads = result.scalars().all()
 
+        # Include source info with each download
+        items = []
+        for d in downloads:
+            item = d.to_dict()
+            if d.source:
+                item["subscription_name"] = d.source.subscription.name if d.source.subscription else None
+                item["platform"] = d.source.platform
+            else:
+                item["subscription_name"] = None
+                item["platform"] = None
+            items.append(item)
+
         return jsonify({
-            "items": [d.to_dict() for d in downloads],
+            "items": items,
             "count": len(downloads),
         })