diff --git a/Antigravity-Manager b/Antigravity-Manager
new file mode 160000
index 00000000..a9d96bd5
--- /dev/null
+++ b/Antigravity-Manager
@@ -0,0 +1 @@
+Subproject commit a9d96bd54978c22d3033830debfe77aeeeee2500
diff --git a/backend/internal/service/payment_service.go b/backend/internal/service/payment_service.go
index f88e4171..6fc23f97 100644
--- a/backend/internal/service/payment_service.go
+++ b/backend/internal/service/payment_service.go
@@ -288,7 +288,6 @@ func psComputeValidityDays(days int, unit string) int {
 	}
 }
 
-
 func psStartOfDayUTC(t time.Time) time.Time {
 	y, m, d := t.UTC().Date()
 	return time.Date(y, m, d, 0, 0, 0, 0, time.UTC)