feat: BreakPilot PWA - Full codebase (clean push without large binaries)

All services: admin-v2, studio-v2, website, ai-compliance-sdk,
consent-service, klausur-service, voice-service, and infrastructure.
Large PDFs and compiled binaries excluded via .gitignore.

breakpilot-drive/UnityScripts/UI/MainMenu.cs

@@ -0,0 +1,180 @@
+// ==============================================
+// MainMenu.cs - Hauptmenue Steuerung
+// ==============================================
+// Verwaltet das Startmenue mit Spielmodus-Auswahl
+// und Einstellungen.
+
+using UnityEngine;
+using UnityEngine.SceneManagement;
+using TMPro;
+
+namespace BreakpilotDrive
+{
+    public class MainMenu : MonoBehaviour
+    {
+        [Header("UI Elemente")]
+        [SerializeField] private GameObject mainPanel;
+        [SerializeField] private GameObject settingsPanel;
+        [SerializeField] private GameObject loadingPanel;
+
+        [Header("Benutzer-Info")]
+        [SerializeField] private TMP_InputField userIdInput;
+        [SerializeField] private TextMeshProUGUI levelText;
+        [SerializeField] private TextMeshProUGUI welcomeText;
+
+        [Header("Scene-Namen")]
+        [SerializeField] private string videoGameScene = "Game_Video";
+        [SerializeField] private string audioGameScene = "Game_Audio";
+
+        // Benutzer-Daten
+        private string currentUserId = "guest";
+        private LearningLevel currentLevel;
+
+        void Start()
+        {
+            // Panels initialisieren
+            if (mainPanel) mainPanel.SetActive(true);
+            if (settingsPanel) settingsPanel.SetActive(false);
+            if (loadingPanel) loadingPanel.SetActive(false);
+
+            // Gespeicherte User-ID laden
+            currentUserId = PlayerPrefs.GetString("UserId", "guest");
+            if (userIdInput != null)
+            {
+                userIdInput.text = currentUserId;
+            }
+
+            // Lernniveau laden
+            LoadUserLevel();
+        }
+
+        // ==============================================
+        // Benutzer-Management
+        // ==============================================
+        public void OnUserIdChanged(string newUserId)
+        {
+            currentUserId = string.IsNullOrEmpty(newUserId) ? "guest" : newUserId;
+            PlayerPrefs.SetString("UserId", currentUserId);
+            PlayerPrefs.Save();
+
+            LoadUserLevel();
+        }
+
+        private void LoadUserLevel()
+        {
+            if (BreakpilotAPI.Instance != null)
+            {
+                StartCoroutine(BreakpilotAPI.Instance.GetLearningLevel(currentUserId,
+                    onSuccess: (level) =>
+                    {
+                        currentLevel = level;
+                        UpdateLevelDisplay();
+                    },
+                    onError: (error) =>
+                    {
+                        Debug.LogWarning($"Lernniveau konnte nicht geladen werden: {error}");
+                        // Fallback-Level
+                        currentLevel = new LearningLevel { overall_level = 3 };
+                        UpdateLevelDisplay();
+                    }
+                ));
+            }
+        }
+
+        private void UpdateLevelDisplay()
+        {
+            if (levelText != null && currentLevel != null)
+            {
+                levelText.text = $"Level {currentLevel.overall_level}";
+            }
+
+            if (welcomeText != null)
+            {
+                string name = currentUserId == "guest" ? "Gast" : currentUserId;
+                welcomeText.text = $"Hallo, {name}!";
+            }
+        }
+
+        // ==============================================
+        // Spielstart
+        // ==============================================
+        public void PlayVideoMode()
+        {
+            StartGame(videoGameScene);
+        }
+
+        public void PlayAudioMode()
+        {
+            StartGame(audioGameScene);
+        }
+
+        private void StartGame(string sceneName)
+        {
+            // Loading anzeigen
+            if (loadingPanel) loadingPanel.SetActive(true);
+            if (mainPanel) mainPanel.SetActive(false);
+
+            // Fragen vorladen
+            if (BreakpilotAPI.Instance != null)
+            {
+                int difficulty = currentLevel?.overall_level ?? 3;
+                StartCoroutine(BreakpilotAPI.Instance.GetQuizQuestions(
+                    difficulty: difficulty,
+                    count: 20,
+                    onSuccess: (questions) =>
+                    {
+                        Debug.Log($"{questions.Length} Fragen vorgeladen");
+                        LoadScene(sceneName);
+                    },
+                    onError: (error) =>
+                    {
+                        Debug.LogWarning($"Fragen konnten nicht geladen werden: {error}");
+                        // Trotzdem starten (Offline-Modus)
+                        LoadScene(sceneName);
+                    }
+                ));
+            }
+            else
+            {
+                LoadScene(sceneName);
+            }
+        }
+
+        private void LoadScene(string sceneName)
+        {
+            SceneManager.LoadScene(sceneName);
+        }
+
+        // ==============================================
+        // Einstellungen
+        // ==============================================
+        public void OpenSettings()
+        {
+            if (mainPanel) mainPanel.SetActive(false);
+            if (settingsPanel) settingsPanel.SetActive(true);
+        }
+
+        public void CloseSettings()
+        {
+            if (settingsPanel) settingsPanel.SetActive(false);
+            if (mainPanel) mainPanel.SetActive(true);
+        }
+
+        // ==============================================
+        // Sonstiges
+        // ==============================================
+        public void QuitGame()
+        {
+            #if UNITY_EDITOR
+            UnityEditor.EditorApplication.isPlaying = false;
+            #else
+            Application.Quit();
+            #endif
+        }
+
+        public void OpenWebsite()
+        {
+            Application.OpenURL("https://breakpilot.app");
+        }
+    }
+}