minor fixes

back/db/api-db.ts

@@ -122,7 +122,7 @@ export async function getMessages(roomId: number) {
 
         WHERE msg.room_id = ?
         GROUP BY msg.message_id
-        ORDER BY message.idate DESC;
+        ORDER BY message.idate ASC;
     `;
     const values = [roomId];
     return await execQueryAsync(query, values);