Wszystkie funkcjonalnosci git, potrzeba poprawy UI

Assets/Scripts/InitialSceneScripts/MenuController.cs

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+using UnityEngine;
+using TMPro;
+using UnityEngine.SceneManagement;
+
+public class MenuController : MonoBehaviour
+{
+    [Header("UI References")]
+    public TMP_InputField subjectIdInput;
+
+    [Header("Scene Settings")]
+    public string firstSceneName = "InstructionScene";
+
+    public void OnStartButtonClicked()
+    {
+        string subjectId = subjectIdInput.text.Trim();
+
+        // Fallback in case you forget to type an ID
+        if (string.IsNullOrEmpty(subjectId))
+        {
+            subjectId = "Test_Subject_01";
+            Debug.LogWarning("[MenuController] ID was empty. Using default ID.");
+        }
+
+        // 1. Create folders and connect to MQTT
+        ExperimentManager.Instance.InitializeSession(subjectId);
+
+        // 2. Load the next scene
+        SceneManager.LoadScene(firstSceneName);
+    }
+}