feat: убираем денормализацию (антипреждевременная оптимизация)

src/usecase/analytics/get_spending_analytics.py

@@ -74,6 +74,10 @@ async def get_spending_analytics(
     post_ids = [p.post.id for p in filtered if p.post]
     views_map = await self.database.get_latest_views_data_batch(post_ids) if post_ids else {}
 
+    # Batch fetch subscriptions counts
+    placement_ids = [p.id for p in filtered]
+    subscriptions_counts = await self.database.count_subscriptions_by_placement_batch(placement_ids)
+
     # Группировка по периодам
     period_data: dict[str, PeriodData] = defaultdict(PeriodData)
 
@@ -85,8 +89,9 @@ async def get_spending_analytics(
             total_cost += p.cost
             pd.cost += p.cost
 
-        total_subs += p.subscriptions_count
-        pd.subscriptions += p.subscriptions_count
+        subs_count = subscriptions_counts.get(p.id, 0)
+        total_subs += subs_count
+        pd.subscriptions += subs_count
 
         # Get views from batch data
         if p.post and p.post.id in views_map: