style: fix linting issues

- Fix SQLite GetReaction to use standard List pattern (consistent with MySQL/PostgreSQL)
- Add periods to comment endings (godot linter requirement)
- Simplify GetReaction implementation to avoid sql.ErrNoRows handling

server/router/api/v1/reaction_service.go

@@ -68,7 +68,7 @@ func (s *APIV1Service) DeleteMemoReaction(ctx context.Context, request *v1pb.Del
 		return nil, status.Errorf(codes.InvalidArgument, "invalid reaction name: %v", err)
 	}
 
-	// Get reaction and check ownership
+	// Get reaction and check ownership.
 	reaction, err := s.Store.GetReaction(ctx, &store.FindReaction{
 		ID: &reactionID,
 	})
@@ -76,7 +76,7 @@ func (s *APIV1Service) DeleteMemoReaction(ctx context.Context, request *v1pb.Del
 		return nil, status.Errorf(codes.Internal, "failed to get reaction")
 	}
 	if reaction == nil {
-		// Return permission denied to avoid revealing if reaction exists
+		// Return permission denied to avoid revealing if reaction exists.
 		return nil, status.Errorf(codes.PermissionDenied, "permission denied")
 	}
 

store/db/sqlite/reaction.go

@@ -88,40 +88,15 @@ func (d *DB) ListReactions(ctx context.Context, find *store.FindReaction) ([]*st
 }
 
 func (d *DB) GetReaction(ctx context.Context, find *store.FindReaction) (*store.Reaction, error) {
-	where, args := []string{"1 = 1"}, []any{}
-
-	if find.ID != nil {
-		where, args = append(where, "id = ?"), append(args, *find.ID)
-	}
-	if find.CreatorID != nil {
-		where, args = append(where, "creator_id = ?"), append(args, *find.CreatorID)
-	}
-	if find.ContentID != nil {
-		where, args = append(where, "content_id = ?"), append(args, *find.ContentID)
-	}
-
-	reaction := &store.Reaction{}
-	if err := d.db.QueryRowContext(ctx, `
-		SELECT
-			id,
-			created_ts,
-			creator_id,
-			content_id,
-			reaction_type
-		FROM reaction
-		WHERE `+strings.Join(where, " AND ")+`
-		LIMIT 1`,
-		args...,
-	).Scan(
-		&reaction.ID,
-		&reaction.CreatedTs,
-		&reaction.CreatorID,
-		&reaction.ContentID,
-		&reaction.ReactionType,
-	); err != nil {
+	list, err := d.ListReactions(ctx, find)
+	if err != nil {
 		return nil, err
 	}
+	if len(list) == 0 {
+		return nil, nil
+	}
 
+	reaction := list[0]
 	return reaction, nil
 }