fix: reward day calculation

internal/service/sadhna_service.go

@@ -246,7 +246,13 @@ func (s *SadhnaService) Dashboard(ctx context.Context, userID string) (*model.Sa
 			s.ensureGrant(ctx, userID, current)
 		}
 		pending, _ = s.rewards.PendingGrant(ctx, userID)
-		nextReward = nextRewardDate(today, current, todayDone)
+		// Only project a next-gift date when a streak is actually in
+		// progress. With no live streak (current == 0) there's nothing to
+		// "continue", so the calendar shows no gift marker until the devotee
+		// completes a day (full rounds AND a quote).
+		if current > 0 {
+			nextReward = nextRewardDate(today, current, todayDone)
+		}
 	}
 
 	return &model.SadhnaDashboard{