Added Start Menu, -Added CartSpawner, -Added Get Car Key Objective

Assets/Scripts/Day1CarExitTrigger.cs

@@ -0,0 +1,32 @@
+using UnityEngine;
+using TMPro;
+
+public class Day1CarExitTrigger : MonoBehaviour
+{
+    public GameObject dayCompleteUI; // UI panel that shows "Day 1 Complete!"
+    public TMP_Text messageText;     // Optional text to show messages
+
+    private void OnTriggerEnter(Collider other)
+    {
+        if (!other.CompareTag("Player")) return;
+
+        if (KeyPickup.hasKeys)
+        {
+            if (dayCompleteUI != null)
+                dayCompleteUI.SetActive(true);
+
+            if (messageText != null)
+                messageText.text = "Day 1 Complete!";
+
+            Debug.Log("Day complete! Player has keys.");
+            Time.timeScale = 0f;
+            Cursor.lockState = CursorLockMode.None;
+            Cursor.visible = true;
+        }
+        else
+        {
+            if (messageText != null)
+                messageText.text = "You need to find your keys near the car!";
+        }
+    }
+}