fix: db was failing under testing

server/internal/store/conversations.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"sort"
+	"time"
 
 	"github.com/jackc/pgx/v5"
 )
@@ -145,16 +146,32 @@ func (s *Store) ListConversationsForUser(ctx context.Context, userID int64) ([]C
 	var list []ConversationSummary
 	for rows.Next() {
 		var cs ConversationSummary
-		var msg Message
+		var (
+			msgID      *int64
+			msgConvID  *int64
+			msgSender  *int64
+			msgBody    *string
+			msgCreated *time.Time
+			msgEdited  *time.Time
+			msgDeleted *time.Time
+		)
 		if err := rows.Scan(
 			&cs.ID, &cs.Type, &cs.CreatedAt,
-			&msg.ID, &msg.ConversationID, &msg.SenderID, &msg.Body, &msg.CreatedAt, &msg.EditedAt, &msg.DeletedAt,
+			&msgID, &msgConvID, &msgSender, &msgBody, &msgCreated, &msgEdited, &msgDeleted,
 			&cs.UnreadCount,
 		); err != nil {
 			return nil, err
 		}
-		if msg.ID != 0 {
-			cs.LastMessage = &msg
+		if msgID != nil {
+			cs.LastMessage = &Message{
+				ID:             *msgID,
+				ConversationID: *msgConvID,
+				SenderID:       *msgSender,
+				Body:           *msgBody,
+				CreatedAt:      *msgCreated,
+				EditedAt:       msgEdited,
+				DeletedAt:      msgDeleted,
+			}
 		}
 		list = append(list, cs)
 	}