feat(admin): add admin notification system for deposits, purchases, and renewals

bot/handlers/client/buy.py

@@ -29,6 +29,7 @@ from misc.utils import (
 )
 from schemas.di import DependenciesDTO
 from schemas.subscriptions import SubscriptionPlan
+from services.admin_notifications import notify_subscription_purchase
 
 router = Router()
 logger = logging.getLogger(__name__)
@@ -223,4 +224,18 @@ async def proceed_to_checkout(
             amount,
         )
 
+    if deducted_user:
+        await notify_subscription_purchase(
+            cb.bot,
+            user_id=user.id,
+            username=cb.from_user.username,
+            amount=amount,
+            balance_before=deducted_user.balance + amount,
+            balance_after=deducted_user.balance,
+            devices=ctx.devices,
+            duration_days=convert_duration_to_int(ctx.duration),
+            whitelists=ctx.whitelists,
+            credit=credit,
+        )
+
     await cb.message.edit_text(SUCCESSFULLY_CREATED_SUBSCRIPTION, reply_markup=return_to_menu)