Added comments to everything

Assets/Scripts/Game/PlayerJoinCard.cs

@@ -1,17 +1,39 @@
 using TMPro;
-using UnityEngine; using Game; using Music; using Player;
+using UnityEngine;
+using Game;
+using Music;
+using Player;
+
 namespace Game
 {
-
-public class PlayerJoinCard : MonoBehaviour
-{
-    public GameObject playerPreview;
-    public int playerNumber;
-    public TextMeshProUGUI playerNumberText;
-
-    void Start() // Sets player number
+    /// <summary>
+    /// This class represents a player join card, displaying the player's number
+    /// and preview in the game lobby.
+    /// </summary>
+    public class PlayerJoinCard : MonoBehaviour
     {
-        playerNumberText.text = playerNumber.ToString();
+        /// <summary>
+        /// The preview object representing the player.
+        /// </summary>
+        public GameObject playerPreview;
+
+        /// <summary>
+        /// The number assigned to the player.
+        /// </summary>
+        public int playerNumber;
+
+        /// <summary>
+        /// The text element displaying the player's number.
+        /// </summary>
+        public TextMeshProUGUI playerNumberText;
+
+        /// <summary>
+        /// Sets the player's number text when the game starts.
+        /// </summary>
+        private void Start()
+        {
+            // Display the player's number on the join card
+            playerNumberText.text = playerNumber.ToString();
+        }
     }
-}
 }