changed dev routing away from faulty proxy

backend/package.json

@@ -4,7 +4,8 @@
   "type": "module",
   "scripts": {
     "dev": "npm run build && npx tsx src/server.ts",
-    "build": "tsc", 
+    "dev:single": "cross-env NODE_ENV=development npx tsx src/server.ts",
+    "build": "tsc",
     "start": "node dist/server.js",
     "prestart": "npm run build",
     "test": "jest",
@@ -32,6 +33,7 @@
     "@types/jest": "^29.5.0",
     "ts-node": "^10.9.0",
     "typescript": "^5.0.0",
-    "tsx": "^4.0.0"
+    "tsx": "^4.0.0",
+    "cross-env": "10.1.0"
   }
 }

backend/src/controllers/employeeController.ts

@@ -18,17 +18,17 @@ function generateEmail(firstname: string, lastname: string): string {
 
   const cleanFirstname = convertUmlauts(firstname).replace(/[^a-z0-9]/g, '');
   const cleanLastname = convertUmlauts(lastname).replace(/[^a-z0-9]/g, '');
-  
+
   return `${cleanFirstname}.${cleanLastname}@sp.de`;
 }
 
 export const getEmployees = async (req: AuthRequest, res: Response): Promise<void> => {
   try {
     console.log('🔍 Fetching employees - User:', req.user);
-    
+
     const { includeInactive } = req.query;
     const includeInactiveFlag = includeInactive === 'true';
-    
+
     let query = `
       SELECT 
         e.id, e.email, e.firstname, e.lastname, 
@@ -43,13 +43,13 @@ export const getEmployees = async (req: AuthRequest, res: Response): Promise<voi
       FROM employees e
       LEFT JOIN employee_roles er ON e.id = er.employee_id
     `;
-    
+
     if (!includeInactiveFlag) {
       query += ' WHERE e.is_active = 1';
     }
-    
+
     query += ' ORDER BY e.firstname, e.lastname';
-    
+
     const employees = await db.all<any>(query);
 
     // Format employees with proper field names and roles array
@@ -132,12 +132,12 @@ export const createEmployee = async (req: AuthRequest, res: Response): Promise<v
       password: '***hidden***'
     });
 
-    const { 
-      password, 
-      firstname, 
-      lastname, 
+    const {
+      password,
+      firstname,
+      lastname,
       roles = ['user'],
-      employeeType, 
+      employeeType,
       contractType,
       canWorkAlone = false,
       isTrainee = false
@@ -146,21 +146,21 @@ export const createEmployee = async (req: AuthRequest, res: Response): Promise<v
     // Validation
     if (!password || !firstname || !lastname || !employeeType) {
       console.log('❌ Validation failed: Missing required fields');
-      res.status(400).json({ 
-        error: 'Password, firstname, lastname und employeeType sind erforderlich' 
+      res.status(400).json({
+        error: 'Password, firstname, lastname und employeeType sind erforderlich'
       });
       return;
     }
 
     // ✅ ENHANCED: Validate employee type exists and get category info
-    const employeeTypeInfo = await db.get<{type: string, category: string, has_contract_type: number}>(
+    const employeeTypeInfo = await db.get<{ type: string, category: string, has_contract_type: number }>(
       'SELECT type, category, has_contract_type FROM employee_types WHERE type = ?',
       [employeeType]
     );
 
     if (!employeeTypeInfo) {
-      res.status(400).json({ 
-        error: `Ungültiger employeeType: ${employeeType}. Gültige Typen: manager, personell, apprentice, guest` 
+      res.status(400).json({
+        error: `Ungültiger employeeType: ${employeeType}. Gültige Typen: manager, personell, apprentice, guest`
       });
       return;
     }
@@ -169,22 +169,22 @@ export const createEmployee = async (req: AuthRequest, res: Response): Promise<v
     if (employeeTypeInfo.has_contract_type === 1) {
       // Internal types require contract type
       if (!contractType) {
-        res.status(400).json({ 
-          error: `contractType ist erforderlich für employeeType: ${employeeType}` 
+        res.status(400).json({
+          error: `contractType ist erforderlich für employeeType: ${employeeType}`
         });
         return;
       }
       if (!['small', 'large', 'flexible'].includes(contractType)) {
-        res.status(400).json({ 
-          error: `Ungültiger contractType: ${contractType}. Gültige Werte: small, large, flexible` 
+        res.status(400).json({
+          error: `Ungültiger contractType: ${contractType}. Gültige Werte: small, large, flexible`
         });
         return;
       }
     } else {
       // External types (guest) should not have contract type
       if (contractType) {
-        res.status(400).json({ 
-          error: `contractType ist nicht erlaubt für employeeType: ${employeeType}` 
+        res.status(400).json({
+          error: `contractType ist nicht erlaubt für employeeType: ${employeeType}`
         });
         return;
       }
@@ -192,8 +192,8 @@ export const createEmployee = async (req: AuthRequest, res: Response): Promise<v
 
     // ✅ ENHANCED: isTrainee validation - only applicable for personell type
     if (isTrainee && employeeType !== 'personell') {
-      res.status(400).json({ 
-        error: `isTrainee ist nur für employeeType 'personell' erlaubt` 
+      res.status(400).json({
+        error: `isTrainee ist nur für employeeType 'personell' erlaubt`
       });
       return;
     }
@@ -204,11 +204,11 @@ export const createEmployee = async (req: AuthRequest, res: Response): Promise<v
 
     // Check if generated email already exists
     const existingUser = await db.get<any>('SELECT id FROM employees WHERE email = ? AND is_active = 1', [email]);
-    
+
     if (existingUser) {
       console.log('❌ Generated email already exists:', email);
-      res.status(409).json({ 
-        error: `Employee with email ${email} already exists. Please use different firstname/lastname.` 
+      res.status(409).json({
+        error: `Employee with email ${email} already exists. Please use different firstname/lastname.`
       });
       return;
     }
@@ -228,12 +228,12 @@ export const createEmployee = async (req: AuthRequest, res: Response): Promise<v
           is_active, is_trainee
         ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,
         [
-          employeeId, 
-          email, 
-          hashedPassword, 
-          firstname, 
-          lastname, 
-          employeeType, 
+          employeeId,
+          email,
+          hashedPassword,
+          firstname,
+          lastname,
+          employeeType,
           contractType, // Will be NULL for external types
           canWorkAlone ? 1 : 0,
           1,
@@ -302,9 +302,9 @@ export const updateEmployee = async (req: AuthRequest, res: Response): Promise<v
     const { id } = req.params;
     const { firstname, lastname, roles, isActive, employeeType, contractType, canWorkAlone, isTrainee } = req.body;
 
-    console.log('📝 Update Employee Request:', { 
-      id, firstname, lastname, roles, isActive, 
-      employeeType, contractType, canWorkAlone, isTrainee 
+    console.log('📝 Update Employee Request:', {
+      id, firstname, lastname, roles, isActive,
+      employeeType, contractType, canWorkAlone, isTrainee
     });
 
     // Check if employee exists and get current data
@@ -321,10 +321,10 @@ export const updateEmployee = async (req: AuthRequest, res: Response): Promise<v
         'SELECT role FROM employee_roles WHERE employee_id = ?',
         [currentUser.userId]
       );
-      
+
       const isCurrentlyAdmin = currentUserRoles.some(role => role.role === 'admin');
       const willBeAdmin = roles.includes('admin');
-      
+
       if (isCurrentlyAdmin && !willBeAdmin) {
         res.status(400).json({ error: 'You cannot remove your own admin role' });
         return;
@@ -372,8 +372,8 @@ export const updateEmployee = async (req: AuthRequest, res: Response): Promise<v
       );
 
       if (!validEmployeeType) {
-        res.status(400).json({ 
-          error: `Ungültiger employeeType: ${employeeType}` 
+        res.status(400).json({
+          error: `Ungültiger employeeType: ${employeeType}`
         });
         return;
       }
@@ -385,16 +385,16 @@ export const updateEmployee = async (req: AuthRequest, res: Response): Promise<v
       const newFirstname = firstname || existingEmployee.firstname;
       const newLastname = lastname || existingEmployee.lastname;
       email = generateEmail(newFirstname, newLastname);
-      
+
       // Check if new email already exists (for another employee)
       const emailExists = await db.get<any>(
-        'SELECT id FROM employees WHERE email = ? AND id != ? AND is_active = 1', 
+        'SELECT id FROM employees WHERE email = ? AND id != ? AND is_active = 1',
         [email, id]
       );
-      
+
       if (emailExists) {
-        res.status(409).json({ 
-          error: `Cannot update name - email ${email} already exists for another employee` 
+        res.status(409).json({
+          error: `Cannot update name - email ${email} already exists for another employee`
         });
         return;
       }
@@ -423,7 +423,7 @@ export const updateEmployee = async (req: AuthRequest, res: Response): Promise<v
       if (roles) {
         // Delete existing roles
         await db.run('DELETE FROM employee_roles WHERE employee_id = ?', [id]);
-        
+
         // Insert new roles
         for (const role of roles) {
           await db.run(
@@ -541,18 +541,18 @@ export const deleteEmployee = async (req: AuthRequest, res: Response): Promise<v
     try {
       // 1. Remove availabilities
       await db.run('DELETE FROM employee_availability WHERE employee_id = ?', [id]);
-      
+
       // 2. Remove from assigned_shifts (JSON field cleanup)
       interface AssignedShift {
         id: string;
         assigned_employees: string;
       }
-      
+
       const assignedShifts = await db.all<AssignedShift>(
-        'SELECT id, assigned_employees FROM scheduled_shifts WHERE json_extract(assigned_employees, "$") LIKE ?', 
+        'SELECT id, assigned_employees FROM scheduled_shifts WHERE json_extract(assigned_employees, "$") LIKE ?',
         [`%${id}%`]
       );
-      
+
       for (const shift of assignedShifts) {
         try {
           const employeesArray: string[] = JSON.parse(shift.assigned_employees || '[]');
@@ -581,7 +581,7 @@ export const deleteEmployee = async (req: AuthRequest, res: Response): Promise<v
 
       await db.run('COMMIT');
       console.log('✅ Successfully deleted employee:', existingEmployee.email);
-      
+
       res.status(204).send();
 
     } catch (error) {
@@ -655,23 +655,23 @@ export const updateAvailabilities = async (req: AuthRequest, res: Response): Pro
     }
 
     // Validate contract type requirements
-    const availableCount = availabilities.filter((avail: any) => 
+    const availableCount = availabilities.filter((avail: any) =>
       avail.preferenceLevel === 1 || avail.preferenceLevel === 2
     ).length;
 
     const contractType = existingEmployee.contract_type;
-    
+
     // Apply contract type minimum requirements
     if (contractType === 'small' && availableCount < 2) {
-      res.status(400).json({ 
-        error: 'Employees with small contract must have at least 2 available shifts' 
+      res.status(400).json({
+        error: 'Employees with small contract must have at least 2 available shifts'
       });
       return;
     }
 
     if (contractType === 'large' && availableCount < 3) {
-      res.status(400).json({ 
-        error: 'Employees with large contract must have at least 3 available shifts' 
+      res.status(400).json({
+        error: 'Employees with large contract must have at least 3 available shifts'
       });
       return;
     }
@@ -742,12 +742,12 @@ export const changePassword = async (req: AuthRequest, res: Response): Promise<v
 
     // Get the current user from the auth middleware
     const currentUser = (req as AuthRequest).user;
-    
+
     // Check if user is changing their own password or is an admin
     if (currentUser?.userId !== id && currentUser?.role !== 'admin') {
       res.status(403).json({ error: 'You can only change your own password' });
       return;
-    } 
+    }
 
     // Check if employee exists and get password
     const employee = await db.get<{ password: string }>('SELECT password FROM employees WHERE id = ?', [id]);
@@ -756,8 +756,8 @@ export const changePassword = async (req: AuthRequest, res: Response): Promise<v
       return;
     }
 
-    // For non-admin users, verify current password
-    if (currentUser?.role !== 'admin') {
+    // Verify current password
+    if (employee) {
       const isValidPassword = await bcrypt.compare(currentPassword, employee.password);
       if (!isValidPassword) {
         res.status(400).json({ error: 'Current password is incorrect' });
@@ -766,8 +766,8 @@ export const changePassword = async (req: AuthRequest, res: Response): Promise<v
     }
 
     // Validate new password
-    if (!newPassword || newPassword.length < 6) {
-      res.status(400).json({ error: 'New password must be at least 6 characters long' });
+    if (!newPassword || newPassword.length < 8) {
+      res.status(400).json({ error: 'New password must be at least 8 characters long' });
       return;
     }
 
@@ -798,13 +798,13 @@ export const updateLastLogin = async (req: AuthRequest, res: Response): Promise<
     // Update last_login with current timestamp
     const currentTimestamp = new Date().toISOString();
     await db.run(
-      'UPDATE employees SET last_login = ? WHERE id = ?', 
+      'UPDATE employees SET last_login = ? WHERE id = ?',
       [currentTimestamp, id]
     );
 
     console.log(`✅ Last login updated for employee ${id}: ${currentTimestamp}`);
-    
-    res.json({ 
+
+    res.json({
       message: 'Last login updated successfully',
       lastLogin: currentTimestamp
     });
@@ -825,7 +825,7 @@ const checkAdminCount = async (employeeId: string, newRoles: string[]): Promise<
     );
 
     const currentAdminCount = adminCountResult?.count || 0;
-    
+
     // Check ALL current roles for the employee
     const currentEmployeeRoles = await db.all<{ role: string }>(
       `SELECT role FROM employee_roles WHERE employee_id = ?`,

backend/src/controllers/setupController.ts

@@ -16,7 +16,7 @@ function generateEmail(firstname: string, lastname: string): string {
 
   const cleanFirstname = convertUmlauts(firstname).replace(/[^a-z0-9]/g, '');
   const cleanLastname = convertUmlauts(lastname).replace(/[^a-z0-9]/g, '');
-  
+
   return `${cleanFirstname}.${cleanLastname}@sp.de`;
 }
 
@@ -31,15 +31,15 @@ export const checkSetupStatus = async (req: Request, res: Response): Promise<voi
     );
 
     console.log('Admin exists check:', adminExists);
-    
+
     const needsSetup = !adminExists || adminExists['COUNT(*)'] === 0;
-    
+
     res.json({
       needsSetup: needsSetup
     });
   } catch (error) {
     console.error('Error checking setup status:', error);
-    res.status(500).json({ 
+    res.status(500).json({
       error: 'Internal server error during setup check'
     });
   }
@@ -75,8 +75,8 @@ export const setupAdmin = async (req: Request, res: Response): Promise<void> =>
     }
 
     // Password length validation
-    if (password.length < 6) {
-      res.status(400).json({ error: 'Das Passwort muss mindestens 6 Zeichen lang sein' });
+    if (password.length < 8) {
+      res.status(400).json({ error: 'Das Passwort muss mindestens 8 Zeichen lang sein' });
       return;
     }
 
@@ -125,15 +125,15 @@ export const setupAdmin = async (req: Request, res: Response): Promise<void> =>
     } catch (dbError) {
       await db.run('ROLLBACK');
       console.error('❌ Database error during admin creation:', dbError);
-      res.status(500).json({ 
+      res.status(500).json({
         error: 'Fehler beim Erstellen des Admin-Accounts'
       });
     }
   } catch (error) {
     console.error('❌ Error in setup:', error);
-    
+
     if (!res.headersSent) {
-      res.status(500).json({ 
+      res.status(500).json({
         error: 'Ein unerwarteter Fehler ist aufgetreten'
       });
     }

backend/src/middleware/Validation/Employee.md

@@ -23,7 +23,7 @@
 ### \[CREATE\] Employee
 * `firstname` 1-100 characters and must not be empty
 * `lastname` 1-100 characters and must not be empty
-* `password` must be at least 6 characters (in create mode)
+* `password` must be at least 8 characters (in create mode)
 * `employeeType` must be `manager`, `personell`, `apprentice`, or `guest`
 * `canWorkAlone` optional boolean
 * `isTrainee` optional boolean

backend/src/middleware/validation.ts

@@ -73,7 +73,7 @@ export const validateEmployee = [
   body('contractType')
     .custom((value, { req }) => {
       const employeeType = req.body.employeeType;
-      
+
       // Manager, apprentice => contractType must be flexible
       if (['manager', 'apprentice'].includes(employeeType)) {
         if (value !== 'flexible') {
@@ -92,7 +92,7 @@ export const validateEmployee = [
           throw new Error(`contractType must be 'small' or 'large' for employeeType: ${employeeType}`);
         }
       }
-      
+
       return true;
     }),
 
@@ -156,7 +156,7 @@ export const validateEmployeeUpdate = [
     .custom((value, { req }) => {
       const employeeType = req.body.employeeType;
       if (!employeeType) return true; // Skip if employeeType not provided
-      
+
       // Same validation logic as create
       if (['manager', 'apprentice'].includes(employeeType)) {
         if (value !== 'flexible') {
@@ -173,7 +173,7 @@ export const validateEmployeeUpdate = [
           throw new Error(`contractType must be 'small' or 'large' for employeeType: ${employeeType}`);
         }
       }
-      
+
       return true;
     }),
 
@@ -209,7 +209,7 @@ export const validateChangePassword = [
     .isLength({ min: 1 })
     .withMessage('Current password is required for self-password change'),
 
-  body('password')
+  body('newPassword')
     .isLength({ min: 8 })
     .withMessage('Password must be at least 8 characters')
     .matches(/^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[!@#$%^&*()_+\-=\[\]{};':"\\|,.<>\/?])/)
@@ -217,7 +217,7 @@ export const validateChangePassword = [
 
   body('confirmPassword')
     .custom((value, { req }) => {
-      if (value !== req.body.password) {
+      if (value !== req.body.newPassword) {
         throw new Error('Passwords do not match');
       }
       return true;
@@ -465,7 +465,7 @@ export const validateAvailabilities = [
     .withMessage('Availabilities must be an array')
     .custom((availabilities, { req }) => {
       // Count available shifts (preference level 1 or 2)
-      const availableCount = availabilities.filter((avail: any) => 
+      const availableCount = availabilities.filter((avail: any) =>
         avail.preferenceLevel === 1 || avail.preferenceLevel === 2
       ).length;
 
@@ -473,7 +473,7 @@ export const validateAvailabilities = [
       if (availableCount === 0) {
         throw new Error('At least one available shift is required');
       }
-      
+
       return true;
     }),
 

backend/src/models/helpers/employeeHelpers.ts

@@ -14,7 +14,7 @@ function generateEmail(firstname: string, lastname: string): string {
 
   const cleanFirstname = convertUmlauts(firstname).replace(/[^a-z0-9]/g, '');
   const cleanLastname = convertUmlauts(lastname).replace(/[^a-z0-9]/g, '');
-  
+
   return `${cleanFirstname}.${cleanLastname}@sp.de`;
 }
 
@@ -22,8 +22,8 @@ function generateEmail(firstname: string, lastname: string): string {
 export function validateEmployeeData(employee: CreateEmployeeRequest): string[] {
   const errors: string[] = [];
 
-  if (employee.password?.length < 6) {
-    errors.push('Password must be at least 6 characters long');
+  if (employee.password?.length < 8) {
+    errors.push('Password must be at least 8 characters long');
   }
 
   if (!employee.firstname?.trim() || employee.firstname.trim().length < 2) {
@@ -72,16 +72,16 @@ export function generateEmployeeEmail(firstname: string, lastname: string): stri
 }
 
 // UPDATED: Business logic helpers for new employee types
-export const isManager = (employee: Employee): boolean => 
+export const isManager = (employee: Employee): boolean =>
   employee.employeeType === 'manager';
 
-export const isPersonell = (employee: Employee): boolean => 
+export const isPersonell = (employee: Employee): boolean =>
   employee.employeeType === 'personell';
 
-export const isApprentice = (employee: Employee): boolean => 
+export const isApprentice = (employee: Employee): boolean =>
   employee.employeeType === 'apprentice';
 
-export const isGuest = (employee: Employee): boolean => 
+export const isGuest = (employee: Employee): boolean =>
   employee.employeeType === 'guest';
 
 export const isInternal = (employee: Employee): boolean =>
@@ -91,24 +91,24 @@ export const isExternal = (employee: Employee): boolean =>
   employee.employeeType === 'guest';
 
 // UPDATED: Trainee logic - now based on isTrainee field for personell type
-export const isTrainee = (employee: Employee): boolean => 
+export const isTrainee = (employee: Employee): boolean =>
   employee.employeeType === 'personell' && employee.isTrainee;
 
-export const isExperienced = (employee: Employee): boolean => 
+export const isExperienced = (employee: Employee): boolean =>
   employee.employeeType === 'personell' && !employee.isTrainee;
 
 // Role-based helpers
-export const isAdmin = (employee: Employee): boolean => 
+export const isAdmin = (employee: Employee): boolean =>
   employee.roles?.includes('admin') || false;
 
-export const isMaintenance = (employee: Employee): boolean => 
+export const isMaintenance = (employee: Employee): boolean =>
   employee.roles?.includes('maintenance') || false;
 
-export const isUser = (employee: Employee): boolean => 
+export const isUser = (employee: Employee): boolean =>
   employee.roles?.includes('user') || false;
 
 // UPDATED: Work alone permission - managers and experienced personell can work alone
-export const canEmployeeWorkAlone = (employee: Employee): boolean => 
+export const canEmployeeWorkAlone = (employee: Employee): boolean =>
   employee.canWorkAlone && (isManager(employee) || isExperienced(employee));
 
 // Helper for full name display

backend/src/routes/employees.ts

@@ -11,15 +11,15 @@ import {
   changePassword,
   updateLastLogin
 } from '../controllers/employeeController.js';
-import { 
-  handleValidationErrors, 
-  validateEmployee, 
-  validateEmployeeUpdate, 
+import {
+  handleValidationErrors,
+  validateEmployee,
+  validateEmployeeUpdate,
   validateChangePassword,
   validateId,
   validateEmployeeId,
   validateAvailabilities,
-  validatePagination 
+  validatePagination
 } from '../middleware/validation.js';
 
 const router = express.Router();
@@ -28,18 +28,18 @@ const router = express.Router();
 router.use(authMiddleware);
 
 // Employee CRUD Routes
-router.get('/', validatePagination, handleValidationErrors, getEmployees);
+router.get('/', validatePagination, handleValidationErrors, authMiddleware, getEmployees);
 router.get('/:id', validateId, handleValidationErrors, requireRole(['admin', 'maintenance']), getEmployee);
 router.post('/', validateEmployee, handleValidationErrors, requireRole(['admin']), createEmployee);
 router.put('/:id', validateId, validateEmployeeUpdate, handleValidationErrors, requireRole(['admin', 'maintenance']), updateEmployee);
 router.delete('/:id', validateId, handleValidationErrors, requireRole(['admin']), deleteEmployee);
 
 // Password & Login Routes
-router.put('/:id/password', validateId, validateChangePassword, handleValidationErrors, changePassword);
-router.put('/:id/last-login', validateId, handleValidationErrors, updateLastLogin);
+router.put('/:id/password', validateId, validateChangePassword, handleValidationErrors, authMiddleware, changePassword);
+router.put('/:id/last-login', validateId, handleValidationErrors, authMiddleware, updateLastLogin);
 
 // Availability Routes
-router.get('/:employeeId/availabilities', validateEmployeeId, handleValidationErrors, getAvailabilities);
-router.put('/:employeeId/availabilities', validateEmployeeId, validateAvailabilities, handleValidationErrors, updateAvailabilities);
+router.get('/:employeeId/availabilities', validateEmployeeId, handleValidationErrors, authMiddleware, getAvailabilities);
+router.put('/:employeeId/availabilities', validateEmployeeId, validateAvailabilities, handleValidationErrors, authMiddleware, updateAvailabilities);
 
 export default router;

backend/src/scripts/initializeDatabase.ts

@@ -33,10 +33,10 @@ export async function initializeDatabase(): Promise<void> {
 
   console.log(`✅ Using schema at: ${schemaPath}`);
   const schema = fs.readFileSync(schemaPath, 'utf8');
-  
+
   try {
     console.log('Starting database initialization...');
-    
+
     try {
       const existingAdmin = await db.get<{ count: number }>(
         `SELECT COUNT(*) as count 
@@ -44,7 +44,7 @@ export async function initializeDatabase(): Promise<void> {
          JOIN employee_roles er ON e.id = er.employee_id
          WHERE er.role = 'admin' AND e.is_active = 1`
       );
-      
+
       if (existingAdmin && existingAdmin.count > 0) {
         console.log('✅ Database already initialized with admin user');
         return;
@@ -52,23 +52,23 @@ export async function initializeDatabase(): Promise<void> {
     } catch (error) {
       console.log('ℹ️ Database tables might not exist yet, creating schema...');
     }
-    
+
     // Get list of existing tables
     interface TableInfo {
       name: string;
     }
-    
+
     try {
       const existingTables = await db.all<TableInfo>(
         "SELECT name FROM sqlite_master WHERE type='table' AND name NOT LIKE 'sqlite_%'"
       );
-      
+
       console.log('Existing tables found:', existingTables.map(t => t.name).join(', ') || 'none');
-      
-      // UPDATED: Drop tables in correct dependency order for new schema
+
+      // Drop tables in correct dependency order for new schema
       const tablesToDrop = [
         'employee_availability',
-        'shift_assignments', 
+        'shift_assignments',
         'scheduled_shifts',
         'shifts',
         'time_slots',
@@ -79,7 +79,7 @@ export async function initializeDatabase(): Promise<void> {
         'shift_plans',
         'applied_migrations'
       ];
-      
+
       for (const table of tablesToDrop) {
         if (existingTables.some(t => t.name === table)) {
           console.log(`Dropping table: ${table}`);
@@ -94,17 +94,41 @@ export async function initializeDatabase(): Promise<void> {
       console.error('Error checking/dropping existing tables:', error);
       // Continue with schema creation even if table dropping fails
     }
-    
-    // Execute schema creation in a transaction
-    await db.run('BEGIN EXCLUSIVE TRANSACTION');
-    
-    // Execute each statement separately for better error reporting
-    const statements = schema
+
+    // NEU: PRAGMA-Anweisungen außerhalb der Transaktion ausführen
+    console.log('Executing PRAGMA statements outside transaction...');
+    const pragmaStatements = schema
       .split(';')
       .map(stmt => stmt.trim())
       .filter(stmt => stmt.length > 0)
+      .filter(stmt => stmt.toUpperCase().startsWith('PRAGMA'))
+      .map(stmt => {
+        return stmt.split('\n')
+          .filter(line => !line.trim().startsWith('--'))
+          .join('\n')
+          .trim();
+      });
+
+    for (const statement of pragmaStatements) {
+      try {
+        console.log('Executing PRAGMA:', statement);
+        await db.run(statement);
+      } catch (error) {
+        console.warn('PRAGMA statement might have failed:', statement, error);
+        // Continue even if PRAGMA fails
+      }
+    }
+
+    // Schema-Erstellung in Transaktion
+    await db.run('BEGIN EXCLUSIVE TRANSACTION');
+
+    // Nur die CREATE TABLE und andere Anweisungen (ohne PRAGMA)
+    const schemaStatements = schema
+      .split(';')
+      .map(stmt => stmt.trim())
+      .filter(stmt => stmt.length > 0)
+      .filter(stmt => !stmt.toUpperCase().startsWith('PRAGMA'))
       .map(stmt => {
-        // Remove any single-line comments
         return stmt.split('\n')
           .filter(line => !line.trim().startsWith('--'))
           .join('\n')
@@ -112,7 +136,7 @@ export async function initializeDatabase(): Promise<void> {
       })
       .filter(stmt => stmt.length > 0);
 
-    for (const statement of statements) {
+    for (const statement of schemaStatements) {
       try {
         console.log('Executing statement:', statement.substring(0, 50) + '...');
         await db.run(statement);
@@ -123,8 +147,8 @@ export async function initializeDatabase(): Promise<void> {
         throw error;
       }
     }
-    
-    // UPDATED: Insert default data in correct order
+
+    // Insert default data in correct order
     try {
       console.log('Inserting default employee types...');
       await db.run(`INSERT OR IGNORE INTO employee_types (type, category, has_contract_type) VALUES ('manager', 'internal', 1)`);
@@ -132,7 +156,7 @@ export async function initializeDatabase(): Promise<void> {
       await db.run(`INSERT OR IGNORE INTO employee_types (type, category, has_contract_type) VALUES ('apprentice', 'internal', 1)`);
       await db.run(`INSERT OR IGNORE INTO employee_types (type, category, has_contract_type) VALUES ('guest', 'external', 0)`);
       console.log('✅ Default employee types inserted');
-      
+
       console.log('Inserting default roles...');
       await db.run(`INSERT OR IGNORE INTO roles (role, authority_level, description) VALUES ('admin', 100, 'Vollzugriff')`);
       await db.run(`INSERT OR IGNORE INTO roles (role, authority_level, description) VALUES ('maintenance', 50, 'Wartungszugriff')`);
@@ -143,13 +167,13 @@ export async function initializeDatabase(): Promise<void> {
       await db.run('ROLLBACK');
       throw error;
     }
-    
+
     await db.run('COMMIT');
     console.log('✅ Database schema successfully initialized');
-    
+
     // Give a small delay to ensure all transactions are properly closed
     await new Promise(resolve => setTimeout(resolve, 100));
-    
+
   } catch (error) {
     console.error('Error during database initialization:', error);
     throw error;

backend/src/server.ts

@@ -5,6 +5,7 @@ import { fileURLToPath } from 'url';
 import { initializeDatabase } from './scripts/initializeDatabase.js';
 import fs from 'fs';
 import helmet from 'helmet';
+import type { ViteDevServer } from 'vite';
 
 // Route imports
 import authRoutes from './routes/auth.js';
@@ -22,6 +23,62 @@ const app = express();
 const PORT = 3002;
 const isDevelopment = process.env.NODE_ENV === 'development';
 
+let vite: ViteDevServer | undefined;
+
+if (isDevelopment) {
+  // Dynamically import and setup Vite middleware
+  const setupViteDevServer = async () => {
+    try {
+      const { createServer } = await import('vite');
+      vite = await createServer({
+        server: { middlewareMode: true },
+        appType: 'spa'
+      });
+      app.use(vite.middlewares);
+      console.log('🔧 Vite dev server integrated with Express');
+    } catch (error) {
+      console.warn('⚠️ Vite integration failed, using static files:', error);
+    }
+  };
+  setupViteDevServer();
+}
+
+const configureStaticFiles = () => {
+  const possiblePaths = [
+    // Production path (Docker)
+    '/app/frontend-build',
+    // Development paths
+    path.resolve(__dirname, '../../frontend/dist'),
+    path.resolve(__dirname, '../frontend/dist'), // Added for monorepo
+    path.resolve(process.cwd(), 'frontend/dist'), // Current directory
+    path.resolve(process.cwd(), '../frontend/dist'), // Parent directory
+    // Vite dev server fallback
+    ...(isDevelopment ? [path.resolve(__dirname, '../../frontend')] : [])
+  ];
+
+  for (const testPath of possiblePaths) {
+    try {
+      if (fs.existsSync(testPath)) {
+        // In development, check for dist or direct source
+        if (fs.existsSync(path.join(testPath, 'index.html'))) {
+          console.log('✅ Found frontend at:', testPath);
+          app.use(express.static(testPath));
+          return testPath;
+        }
+        // For Vite dev server in development
+        else if (isDevelopment && fs.existsSync(path.join(testPath, 'index.html'))) {
+          console.log('🔧 Development: Serving frontend source from:', testPath);
+          app.use(express.static(testPath));
+          return testPath;
+        }
+      }
+    } catch (error) {
+      // Silent catch
+    }
+  }
+  return null;
+};
+
 app.set('trust proxy', true);
 
 // Security configuration
@@ -81,8 +138,8 @@ app.use('/api/scheduling', schedulingRoutes);
 
 // Health route
 app.get('/api/health', (req: express.Request, res: express.Response) => {
-  res.json({ 
-    status: 'OK', 
+  res.json({
+    status: 'OK',
     message: 'Backend läuft!',
     timestamp: new Date().toISOString(),
     mode: process.env.NODE_ENV || 'development'
@@ -118,6 +175,7 @@ const findFrontendBuildPath = (): string | null => {
 };
 
 const frontendBuildPath = findFrontendBuildPath();
+const staticPath = configureStaticFiles();
 
 if (frontendBuildPath) {
   app.use(express.static(frontendBuildPath));
@@ -130,46 +188,71 @@ if (frontendBuildPath) {
 }
 
 // Root route
-app.get('/', (req, res) => {
-  if (!frontendBuildPath) {
-    if (isDevelopment) {
-      return res.redirect('http://localhost:3003');
+app.get('/', async (req, res) => {
+  // In development with Vite middleware
+  if (vite) {
+    try {
+      const template = fs.readFileSync(
+        path.resolve(__dirname, '../../frontend/index.html'),
+        'utf-8'
+      );
+      const html = await vite.transformIndexHtml(req.url, template);
+      res.send(html);
+    } catch (error) {
+      res.status(500).send('Vite dev server error');
     }
-    return res.status(500).send('Frontend build not found');
+    return;
   }
-  
+
+  // Fallback to static file serving
+  if (!frontendBuildPath) {
+    return res.status(500).send('Frontend not available');
+  }
+
   const indexPath = path.join(frontendBuildPath, 'index.html');
   res.sendFile(indexPath);
 });
 
 // Client-side routing fallback
-app.get('*', (req, res) => {
+app.get('*', async (req, res, next) => {
   if (req.path.startsWith('/api/')) {
-    return res.status(404).json({ error: 'API endpoint not found' });
+    return next(); // API routes handled normally
   }
-  
-  if (!frontendBuildPath) {
-    if (isDevelopment) {
-      return res.redirect(`http://localhost:3003${req.path}`);
+
+  // Vite dev server handling
+  if (vite) {
+    try {
+      const template = fs.readFileSync(
+        path.resolve(__dirname, '../../frontend/index.html'),
+        'utf-8'
+      );
+      const html = await vite.transformIndexHtml(req.url, template);
+      return res.send(html);
+    } catch (error) {
+      console.error('Vite transformation error:', error);
     }
-    return res.status(500).json({ error: 'Frontend application not available' });
   }
-  
-  const indexPath = path.join(frontendBuildPath, 'index.html');
-  res.sendFile(indexPath);
+
+  // Static file fallback
+  if (staticPath) {
+    const indexPath = path.join(staticPath, 'index.html');
+    return res.sendFile(indexPath);
+  }
+
+  res.status(500).send('Frontend not available');
 });
 
 // Error handling
 app.use((err: any, req: express.Request, res: express.Response, next: express.NextFunction) => {
   console.error('Error:', err);
-  
+
   if (process.env.NODE_ENV === 'production') {
-    res.status(500).json({ 
+    res.status(500).json({
       error: 'Internal server error',
       message: 'Something went wrong'
     });
   } else {
-    res.status(500).json({ 
+    res.status(500).json({
       error: 'Internal server error',
       message: err.message,
       stack: err.stack
@@ -196,7 +279,7 @@ const initializeApp = async () => {
       if (frontendBuildPath) {
         console.log(`📍 Frontend: http://localhost:${PORT}`);
       } else if (isDevelopment) {
-        console.log(`📍 Frontend (Vite): http://localhost:3003`);
+        console.log(`📍 Frontend (Vite): http://localhost:3002`);
       }
       console.log(`📍 API: http://localhost:${PORT}/api`);
     });

frontend/src/hooks/useBackendValidation.ts

@@ -33,35 +33,19 @@ export const useBackendValidation = () => {
         const result = await apiCall();
         return result;
       } catch (error: any) {
-        if (error.validationErrors) {
+        if (error.validationErrors && Array.isArray(error.validationErrors)) {
           setValidationErrors(error.validationErrors);
-          
-          // Show specific validation error messages
-          if (error.validationErrors.length > 0) {
-            // Show the first validation error as the main notification
-            const firstError = error.validationErrors[0];
-            showNotification({
-              type: 'error',
-              title: 'Validierungsfehler',
-              message: firstError.message
-            });
 
-            // If there are multiple errors, show additional notifications for each
-            if (error.validationErrors.length > 1) {
-              // Wait a bit before showing additional notifications to avoid overlap
-              setTimeout(() => {
-                error.validationErrors.slice(1).forEach((validationError: ValidationError, index: number) => {
-                  setTimeout(() => {
-                    showNotification({
-                      type: 'error',
-                      title: 'Weiterer Fehler',
-                      message: validationError.message
-                    });
-                  }, index * 300); // Stagger the notifications
-                });
-              }, 500);
-            }
-          }
+          // Show specific validation error messages from backend
+          error.validationErrors.forEach((validationError: ValidationError, index: number) => {
+            setTimeout(() => {
+              showNotification({
+                type: 'error',
+                title: 'Validierungsfehler',
+                message: `${validationError.field ? `${validationError.field}: ` : ''}${validationError.message}`
+              });
+            }, index * 500); // Stagger the notifications
+          });
         } else {
           // Show notification for other errors
           showNotification({

frontend/src/models/helpers/employeeHelpers.ts

@@ -14,7 +14,7 @@ function generateEmail(firstname: string, lastname: string): string {
 
   const cleanFirstname = convertUmlauts(firstname).replace(/[^a-z0-9]/g, '');
   const cleanLastname = convertUmlauts(lastname).replace(/[^a-z0-9]/g, '');
-  
+
   return `${cleanFirstname}.${cleanLastname}@sp.de`;
 }
 
@@ -22,8 +22,8 @@ function generateEmail(firstname: string, lastname: string): string {
 export function validateEmployeeData(employee: CreateEmployeeRequest): string[] {
   const errors: string[] = [];
 
-  if (employee.password?.length < 6) {
-    errors.push('Password must be at least 6 characters long');
+  if (employee.password?.length < 8) {
+    errors.push('Password must be at least 8 characters long');
   }
 
   if (!employee.firstname?.trim() || employee.firstname.trim().length < 2) {
@@ -72,16 +72,16 @@ export function generateEmployeeEmail(firstname: string, lastname: string): stri
 }
 
 // UPDATED: Business logic helpers for new employee types
-export const isManager = (employee: Employee): boolean => 
+export const isManager = (employee: Employee): boolean =>
   employee.employeeType === 'manager';
 
-export const isPersonell = (employee: Employee): boolean => 
+export const isPersonell = (employee: Employee): boolean =>
   employee.employeeType === 'personell';
 
-export const isApprentice = (employee: Employee): boolean => 
+export const isApprentice = (employee: Employee): boolean =>
   employee.employeeType === 'apprentice';
 
-export const isGuest = (employee: Employee): boolean => 
+export const isGuest = (employee: Employee): boolean =>
   employee.employeeType === 'guest';
 
 export const isInternal = (employee: Employee): boolean =>
@@ -91,24 +91,24 @@ export const isExternal = (employee: Employee): boolean =>
   employee.employeeType === 'guest';
 
 // UPDATED: Trainee logic - now based on isTrainee field for personell type
-export const isTrainee = (employee: Employee): boolean => 
+export const isTrainee = (employee: Employee): boolean =>
   employee.employeeType === 'personell' && employee.isTrainee;
 
-export const isExperienced = (employee: Employee): boolean => 
+export const isExperienced = (employee: Employee): boolean =>
   employee.employeeType === 'personell' && !employee.isTrainee;
 
 // Role-based helpers
-export const isAdmin = (employee: Employee): boolean => 
+export const isAdmin = (employee: Employee): boolean =>
   employee.roles?.includes('admin') || false;
 
-export const isMaintenance = (employee: Employee): boolean => 
+export const isMaintenance = (employee: Employee): boolean =>
   employee.roles?.includes('maintenance') || false;
 
-export const isUser = (employee: Employee): boolean => 
+export const isUser = (employee: Employee): boolean =>
   employee.roles?.includes('user') || false;
 
 // UPDATED: Work alone permission - managers and experienced personell can work alone
-export const canEmployeeWorkAlone = (employee: Employee): boolean => 
+export const canEmployeeWorkAlone = (employee: Employee): boolean =>
   employee.canWorkAlone && (isManager(employee) || isExperienced(employee));
 
 // Helper for full name display

frontend/src/pages/Employees/components/EmployeeForm.tsx

@@ -23,12 +23,12 @@ interface EmployeeFormData {
   lastname: string;
   email: string;
   password: string;
-  
+
   // Step 2: Mitarbeiterkategorie
   employeeType: EmployeeType;
   contractType: ContractType | undefined;
   isTrainee: boolean;
-  
+
   // Step 3: Berechtigungen & Status
   roles: string[];
   canWorkAlone: boolean;
@@ -64,12 +64,12 @@ const useEmployeeForm = (mode: 'create' | 'edit', employee?: Employee) => {
     canWorkAlone: false,
     isActive: true
   });
-  
+
   const [passwordForm, setPasswordForm] = useState<PasswordFormData>({
     newPassword: '',
     confirmPassword: ''
   });
-  
+
   const [showPasswordSection, setShowPasswordSection] = useState(false);
   const [loading, setLoading] = useState(false);
   const [error, setError] = useState('');
@@ -116,7 +116,7 @@ const useEmployeeForm = (mode: 'create' | 'edit', employee?: Employee) => {
 
     const cleanFirstname = convertUmlauts(firstname).replace(/[^a-z0-9]/g, '');
     const cleanLastname = convertUmlauts(lastname).replace(/[^a-z0-9]/g, '');
-    
+
     return `${cleanFirstname}.${cleanLastname}@sp.de`;
   };
 
@@ -177,7 +177,7 @@ const useEmployeeForm = (mode: 'create' | 'edit', employee?: Employee) => {
   const goToNextStep = (): void => {
     setError('');
     clearErrors(); // Clear previous validation errors
-    
+
     if (!validateCurrentStep(currentStep)) {
       return;
     }
@@ -198,7 +198,7 @@ const useEmployeeForm = (mode: 'create' | 'edit', employee?: Employee) => {
   const handleStepChange = (stepIndex: number): void => {
     setError('');
     clearErrors(); // Clear validation errors when changing steps
-    
+
     // Nur erlauben, zu bereits validierten Schritten zu springen
     if (stepIndex <= currentStep + 1) {
       // Vor dem Wechsel validieren
@@ -212,7 +212,7 @@ const useEmployeeForm = (mode: 'create' | 'edit', employee?: Employee) => {
   // ===== FORM HANDLER =====
   const handleInputChange = (e: React.ChangeEvent<HTMLInputElement | HTMLSelectElement>) => {
     const { name, value, type } = e.target;
-    
+
     setFormData(prev => ({
       ...prev,
       [name]: type === 'checkbox' ? (e.target as HTMLInputElement).checked : value
@@ -264,9 +264,9 @@ const useEmployeeForm = (mode: 'create' | 'edit', employee?: Employee) => {
     }
 
     // Determine if can work alone based on employee type
-    const canWorkAlone = employeeType === 'manager' || 
-                        (employeeType === 'personell' && !formData.isTrainee);
-    
+    const canWorkAlone = employeeType === 'manager' ||
+      (employeeType === 'personell' && !formData.isTrainee);
+
     // Reset isTrainee if not personell
     const isTrainee = employeeType === 'personell' ? formData.isTrainee : false;
 
@@ -311,9 +311,9 @@ const useEmployeeForm = (mode: 'create' | 'edit', employee?: Employee) => {
           canWorkAlone: formData.canWorkAlone,
           isTrainee: formData.isTrainee
         };
-        
+
         // Use executeWithValidation ONLY for the API call
-        await executeWithValidation(() => 
+        await executeWithValidation(() =>
           employeeService.createEmployee(createData)
         );
       } else if (employee) {
@@ -327,9 +327,9 @@ const useEmployeeForm = (mode: 'create' | 'edit', employee?: Employee) => {
           isActive: formData.isActive,
           isTrainee: formData.isTrainee
         };
-        
+
         // Use executeWithValidation for the update call
-        await executeWithValidation(() => 
+        await executeWithValidation(() =>
           employeeService.updateEmployee(employee.id, updateData)
         );
 
@@ -343,12 +343,13 @@ const useEmployeeForm = (mode: 'create' | 'edit', employee?: Employee) => {
           await executeWithValidation(() =>
             employeeService.changePassword(employee.id, {
               currentPassword: '',
-              newPassword: passwordForm.newPassword
+              newPassword: passwordForm.newPassword,
+              confirmPassword: passwordForm.confirmPassword
             })
           );
         }
       }
-      
+
       return Promise.resolve();
     } catch (err: any) {
       // Only set error if it's not a validation error (validation errors are handled by the hook)
@@ -364,9 +365,9 @@ const useEmployeeForm = (mode: 'create' | 'edit', employee?: Employee) => {
   const isStepCompleted = (stepIndex: number): boolean => {
     switch (stepIndex) {
       case 0:
-        return !!formData.firstname.trim() && 
-               !!formData.lastname.trim();
-               // REMOVE: (mode === 'edit' || formData.password.length >= 6)
+        return !!formData.firstname.trim() &&
+          !!formData.lastname.trim();
+      // REMOVE: (mode === 'edit' || formData.password.length >= 6)
       case 1:
         return !!formData.employeeType;
       case 2:
@@ -391,7 +392,7 @@ const useEmployeeForm = (mode: 'create' | 'edit', employee?: Employee) => {
     validationErrors,
     getFieldError,
     hasErrors,
-    
+
     // Actions
     goToNextStep,
     goToPrevStep,
@@ -405,7 +406,7 @@ const useEmployeeForm = (mode: 'create' | 'edit', employee?: Employee) => {
     handleSubmit,
     setShowPasswordSection,
     clearErrors,
-    
+
     // Helpers
     isStepCompleted
   };
@@ -430,8 +431,8 @@ interface StepContentProps {
   hasErrors: (fieldName?: string) => boolean;
 }
 
-const Step1Content: React.FC<StepContentProps> = ({ 
-  formData, 
+const Step1Content: React.FC<StepContentProps> = ({
+  formData,
   onInputChange,
   emailPreview,
   mode
@@ -439,9 +440,9 @@ const Step1Content: React.FC<StepContentProps> = ({
   <div style={{ display: 'flex', flexDirection: 'column', gap: '1.5rem' }}>
     <div style={{ display: 'grid', gridTemplateColumns: '1fr 1fr', gap: '1rem' }}>
       <div>
-        <label style={{ 
-          display: 'block', 
-          marginBottom: '0.5rem', 
+        <label style={{
+          display: 'block',
+          marginBottom: '0.5rem',
           fontWeight: '600',
           color: '#495057'
         }}>
@@ -465,9 +466,9 @@ const Step1Content: React.FC<StepContentProps> = ({
       </div>
 
       <div>
-        <label style={{ 
-          display: 'block', 
-          marginBottom: '0.5rem', 
+        <label style={{
+          display: 'block',
+          marginBottom: '0.5rem',
           fontWeight: '600',
           color: '#495057'
         }}>
@@ -493,17 +494,17 @@ const Step1Content: React.FC<StepContentProps> = ({
 
     {/* Email Preview */}
     <div>
-      <label style={{ 
-        display: 'block', 
-        marginBottom: '0.5rem', 
+      <label style={{
+        display: 'block',
+        marginBottom: '0.5rem',
         fontWeight: '600',
         color: '#495057'
       }}>
         E-Mail Adresse (automatisch generiert)
       </label>
-      <div style={{ 
-        padding: '0.75rem', 
-        backgroundColor: '#e9ecef', 
+      <div style={{
+        padding: '0.75rem',
+        backgroundColor: '#e9ecef',
         border: '1px solid #ced4da',
         borderRadius: '6px',
         color: '#495057',
@@ -512,8 +513,8 @@ const Step1Content: React.FC<StepContentProps> = ({
       }}>
         {emailPreview || 'max.mustermann@sp.de'}
       </div>
-      <div style={{ 
-        fontSize: '0.875rem', 
+      <div style={{
+        fontSize: '0.875rem',
         color: '#6c757d',
         marginTop: '0.25rem'
       }}>
@@ -523,9 +524,9 @@ const Step1Content: React.FC<StepContentProps> = ({
 
     {mode === 'create' && (
       <div>
-        <label style={{ 
-          display: 'block', 
-          marginBottom: '0.5rem', 
+        <label style={{
+          display: 'block',
+          marginBottom: '0.5rem',
           fontWeight: '600',
           color: '#495057'
         }}>
@@ -546,8 +547,8 @@ const Step1Content: React.FC<StepContentProps> = ({
           }}
           placeholder="Passwort eingeben"
         />
-        <div style={{ 
-          fontSize: '0.875rem', 
+        <div style={{
+          fontSize: '0.875rem',
           color: '#6c757d',
           marginTop: '0.25rem'
         }}>
@@ -558,7 +559,7 @@ const Step1Content: React.FC<StepContentProps> = ({
   </div>
 );
 
-const Step2Content: React.FC<StepContentProps> = ({ 
+const Step2Content: React.FC<StepContentProps> = ({
   formData,
   onEmployeeTypeChange,
   onTraineeChange,
@@ -581,11 +582,11 @@ const Step2Content: React.FC<StepContentProps> = ({
       {/* Mitarbeiter Kategorie */}
       <div>
         <h3 style={{ margin: '0 0 1rem 0', color: '#495057' }}>👥 Mitarbeiter Kategorie</h3>
-        
+
         {employeeTypeError && (
-          <div style={{ 
-            color: '#dc3545', 
-            fontSize: '0.875rem', 
+          <div style={{
+            color: '#dc3545',
+            fontSize: '0.875rem',
             marginBottom: '1rem',
             padding: '0.5rem',
             backgroundColor: '#f8d7da',
@@ -595,10 +596,10 @@ const Step2Content: React.FC<StepContentProps> = ({
             {employeeTypeError}
           </div>
         )}
-        
+
         <div style={{ display: 'flex', flexDirection: 'column', gap: '0.75rem' }}>
           {Object.values(EMPLOYEE_TYPE_CONFIG).map(type => (
-            <div 
+            <div
               key={type.value}
               style={{
                 display: 'flex',
@@ -626,16 +627,16 @@ const Step2Content: React.FC<StepContentProps> = ({
                 }}
               />
               <div style={{ flex: 1 }}>
-                <div style={{ 
-                  fontWeight: 'bold', 
+                <div style={{
+                  fontWeight: 'bold',
                   color: '#2c3e50',
                   marginBottom: '4px',
                   fontSize: '16px'
                 }}>
                   {type.label}
                 </div>
-                <div style={{ 
-                  fontSize: '14px', 
+                <div style={{
+                  fontSize: '14px',
                   color: '#7f8c8d',
                   lineHeight: '1.4'
                 }}>
@@ -658,10 +659,10 @@ const Step2Content: React.FC<StepContentProps> = ({
 
         {/* Trainee checkbox for personell type */}
         {formData.employeeType === 'personell' && (
-          <div style={{ 
+          <div style={{
             marginTop: '1rem',
-            display: 'flex', 
-            alignItems: 'center', 
+            display: 'flex',
+            alignItems: 'center',
             gap: '10px',
             padding: '1rem',
             border: '1px solid #e0e0e0',
@@ -692,11 +693,11 @@ const Step2Content: React.FC<StepContentProps> = ({
       {hasRole(['admin']) && showContractType && (
         <div>
           <h3 style={{ margin: '0 0 1rem 0', color: '#0c5460' }}>📝 Vertragstyp</h3>
-          
+
           {contractTypeError && (
-            <div style={{ 
-              color: '#dc3545', 
-              fontSize: '0.875rem', 
+            <div style={{
+              color: '#dc3545',
+              fontSize: '0.875rem',
               marginBottom: '1rem',
               padding: '0.5rem',
               backgroundColor: '#f8d7da',
@@ -706,16 +707,16 @@ const Step2Content: React.FC<StepContentProps> = ({
               {contractTypeError}
             </div>
           )}
-          
+
           <div style={{ display: 'flex', flexDirection: 'column', gap: '0.75rem' }}>
             {contractTypeOptions.map(contract => {
               const isFlexibleDisabled = contract.value === 'flexible' && formData.employeeType === 'personell';
-              const isSmallLargeDisabled = (contract.value === 'small' || contract.value === 'large') && 
-                                        (formData.employeeType === 'manager' || formData.employeeType === 'apprentice');
+              const isSmallLargeDisabled = (contract.value === 'small' || contract.value === 'large') &&
+                (formData.employeeType === 'manager' || formData.employeeType === 'apprentice');
               const isDisabled = isFlexibleDisabled || isSmallLargeDisabled;
-              
+
               return (
-                <div 
+                <div
                   key={contract.value}
                   style={{
                     display: 'flex',
@@ -745,8 +746,8 @@ const Step2Content: React.FC<StepContentProps> = ({
                     }}
                   />
                   <div style={{ flex: 1 }}>
-                    <div style={{ 
-                      fontWeight: 'bold', 
+                    <div style={{
+                      fontWeight: 'bold',
                       color: '#2c3e50',
                       marginBottom: '4px',
                       fontSize: '16px'
@@ -773,8 +774,8 @@ const Step2Content: React.FC<StepContentProps> = ({
                         </span>
                       )}
                     </div>
-                    <div style={{ 
-                      fontSize: '14px', 
+                    <div style={{
+                      fontSize: '14px',
                       color: '#7f8c8d',
                       lineHeight: '1.4'
                     }}>
@@ -801,7 +802,7 @@ const Step2Content: React.FC<StepContentProps> = ({
   );
 };
 
-const Step3Content: React.FC<StepContentProps> = ({ 
+const Step3Content: React.FC<StepContentProps> = ({
   formData,
   onInputChange,
   onRoleChange,
@@ -816,11 +817,11 @@ const Step3Content: React.FC<StepContentProps> = ({
       {/* Eigenständigkeit */}
       <div>
         <h3 style={{ margin: '0 0 1rem 0', color: '#495057' }}>🎯 Eigenständigkeit</h3>
-        
+
         {canWorkAloneError && (
-          <div style={{ 
-            color: '#dc3545', 
-            fontSize: '0.875rem', 
+          <div style={{
+            color: '#dc3545',
+            fontSize: '0.875rem',
             marginBottom: '1rem',
             padding: '0.5rem',
             backgroundColor: '#f8d7da',
@@ -830,10 +831,10 @@ const Step3Content: React.FC<StepContentProps> = ({
             {canWorkAloneError}
           </div>
         )}
-        
-        <div style={{ 
-          display: 'flex', 
-          alignItems: 'center', 
+
+        <div style={{
+          display: 'flex',
+          alignItems: 'center',
           gap: '15px',
           padding: '1rem',
           border: '1px solid #e0e0e0',
@@ -847,16 +848,16 @@ const Step3Content: React.FC<StepContentProps> = ({
             checked={formData.canWorkAlone}
             onChange={onInputChange}
             disabled={formData.employeeType === 'manager' || (formData.employeeType === 'personell' && formData.isTrainee)}
-            style={{ 
-              width: '20px', 
+            style={{
+              width: '20px',
               height: '20px',
               opacity: (formData.employeeType === 'manager' || (formData.employeeType === 'personell' && formData.isTrainee)) ? 0.5 : 1
             }}
           />
           <div style={{ flex: 1 }}>
-            <label htmlFor="canWorkAlone" style={{ 
-              fontWeight: 'bold', 
-              color: '#2c3e50', 
+            <label htmlFor="canWorkAlone" style={{
+              fontWeight: 'bold',
+              color: '#2c3e50',
               display: 'block',
               opacity: (formData.employeeType === 'manager' || (formData.employeeType === 'personell' && formData.isTrainee)) ? 0.5 : 1
             }}>
@@ -864,11 +865,11 @@ const Step3Content: React.FC<StepContentProps> = ({
               {(formData.employeeType === 'manager' || (formData.employeeType === 'personell' && formData.isTrainee)) && ' (Automatisch festgelegt)'}
             </label>
             <div style={{ fontSize: '14px', color: '#7f8c8d' }}>
-              {formData.employeeType === 'manager' 
+              {formData.employeeType === 'manager'
                 ? 'Chefs sind automatisch als eigenständig markiert.'
                 : formData.employeeType === 'personell' && formData.isTrainee
-                ? 'Auszubildende können nicht als eigenständig markiert werden.'
-                : 'Dieser Mitarbeiter kann komplexe Aufgaben eigenständig lösen und benötigt keine ständige Betreuung.'
+                  ? 'Auszubildende können nicht als eigenständig markiert werden.'
+                  : 'Dieser Mitarbeiter kann komplexe Aufgaben eigenständig lösen und benötigt keine ständige Betreuung.'
               }
             </div>
           </div>
@@ -890,11 +891,11 @@ const Step3Content: React.FC<StepContentProps> = ({
       {hasRole(['admin']) && (
         <div>
           <h3 style={{ margin: '0 0 1rem 0', color: '#856404' }}>⚙️ Systemrollen</h3>
-          
+
           {rolesError && (
-            <div style={{ 
-              color: '#dc3545', 
-              fontSize: '0.875rem', 
+            <div style={{
+              color: '#dc3545',
+              fontSize: '0.875rem',
               marginBottom: '1rem',
               padding: '0.5rem',
               backgroundColor: '#f8d7da',
@@ -904,10 +905,10 @@ const Step3Content: React.FC<StepContentProps> = ({
               {rolesError}
             </div>
           )}
-          
+
           <div style={{ display: 'flex', flexDirection: 'column', gap: '0.75rem' }}>
             {ROLE_CONFIG.map(role => (
-              <div 
+              <div
                 key={role.value}
                 style={{
                   display: 'flex',
@@ -951,7 +952,7 @@ const Step3Content: React.FC<StepContentProps> = ({
   );
 };
 
-const Step4Content: React.FC<StepContentProps> = ({ 
+const Step4Content: React.FC<StepContentProps> = ({
   formData,
   passwordForm,
   onInputChange,
@@ -970,7 +971,7 @@ const Step4Content: React.FC<StepContentProps> = ({
       {/* Passwort ändern */}
       <div>
         <h3 style={{ margin: '0 0 1rem 0', color: '#856404' }}>🔒 Passwort zurücksetzen</h3>
-        
+
         {!showPasswordSection ? (
           <button
             type="button"
@@ -1009,10 +1010,10 @@ const Step4Content: React.FC<StepContentProps> = ({
                 placeholder="Mindestens 6 Zeichen"
               />
               {newPasswordError && (
-                <div style={{ 
-                  color: '#dc3545', 
-                  fontSize: '0.875rem', 
-                  marginTop: '0.25rem' 
+                <div style={{
+                  color: '#dc3545',
+                  fontSize: '0.875rem',
+                  marginTop: '0.25rem'
                 }}>
                   {newPasswordError}
                 </div>
@@ -1039,10 +1040,10 @@ const Step4Content: React.FC<StepContentProps> = ({
                 placeholder="Passwort wiederholen"
               />
               {confirmPasswordError && (
-                <div style={{ 
-                  color: '#dc3545', 
-                  fontSize: '0.875rem', 
-                  marginTop: '0.25rem' 
+                <div style={{
+                  color: '#dc3545',
+                  fontSize: '0.875rem',
+                  marginTop: '0.25rem'
                 }}>
                   {confirmPasswordError}
                 </div>
@@ -1074,9 +1075,9 @@ const Step4Content: React.FC<StepContentProps> = ({
 
       {/* Aktiv Status */}
       {mode === 'edit' && (
-        <div style={{ 
-          display: 'flex', 
-          alignItems: 'center', 
+        <div style={{
+          display: 'flex',
+          alignItems: 'center',
           gap: '10px',
           padding: '1rem',
           border: `1px solid ${isActiveError ? '#dc3545' : '#e0e0e0'}`,
@@ -1099,10 +1100,10 @@ const Step4Content: React.FC<StepContentProps> = ({
               Inaktive Mitarbeiter können sich nicht anmelden und werden nicht für Schichten eingeplant.
             </div>
             {isActiveError && (
-              <div style={{ 
-                color: '#dc3545', 
-                fontSize: '0.875rem', 
-                marginTop: '0.25rem' 
+              <div style={{
+                color: '#dc3545',
+                fontSize: '0.875rem',
+                marginTop: '0.25rem'
               }}>
                 {isActiveError}
               </div>
@@ -1151,9 +1152,9 @@ const EmployeeForm: React.FC<EmployeeFormProps> = ({
 
   // Inline Step Indicator Komponente (wie in Setup.tsx)
   const StepIndicator: React.FC = () => (
-    <div style={{ 
-      display: 'flex', 
-      justifyContent: 'space-between', 
+    <div style={{
+      display: 'flex',
+      justifyContent: 'space-between',
       alignItems: 'center',
       marginBottom: '2.5rem',
       position: 'relative',
@@ -1169,18 +1170,18 @@ const EmployeeForm: React.FC<EmployeeFormProps> = ({
         backgroundColor: '#e9ecef',
         zIndex: 1
       }} />
-      
+
       {steps.map((step, index) => {
         const isCompleted = index < currentStep;
         const isCurrent = index === currentStep;
         const isClickable = index <= currentStep + 1;
-        
+
         return (
-          <div 
+          <div
             key={step.id}
-            style={{ 
-              display: 'flex', 
-              flexDirection: 'column', 
+            style={{
+              display: 'flex',
+              flexDirection: 'column',
               alignItems: 'center',
               zIndex: 2,
               position: 'relative',
@@ -1210,18 +1211,18 @@ const EmployeeForm: React.FC<EmployeeFormProps> = ({
             >
               {index + 1}
             </button>
-            
+
             <div style={{ textAlign: 'center' }}>
-              <div style={{ 
-                fontSize: '14px', 
+              <div style={{
+                fontSize: '14px',
                 fontWeight: isCurrent ? '600' : '400',
                 color: isCurrent ? '#51258f' : '#6c757d'
               }}>
                 {step.title}
               </div>
               {step.subtitle && (
-                <div style={{ 
-                  fontSize: '12px', 
+                <div style={{
+                  fontSize: '12px',
                   color: '#6c757d',
                   marginTop: '2px'
                 }}>
@@ -1275,8 +1276,8 @@ const EmployeeForm: React.FC<EmployeeFormProps> = ({
       showNotification({ // Changed from addNotification to showNotification
         type: 'success',
         title: 'Erfolg',
-        message: mode === 'create' 
-          ? 'Mitarbeiter wurde erfolgreich erstellt' 
+        message: mode === 'create'
+          ? 'Mitarbeiter wurde erfolgreich erstellt'
           : 'Mitarbeiter wurde erfolgreich aktualisiert'
       });
       onSuccess();
@@ -1287,11 +1288,11 @@ const EmployeeForm: React.FC<EmployeeFormProps> = ({
 
   const getNextButtonText = (): string => {
     if (loading) return '⏳ Wird gespeichert...';
-    
+
     if (currentStep === steps.length - 1) {
       return mode === 'create' ? 'Mitarbeiter erstellen' : 'Änderungen speichern';
     }
-    
+
     return 'Weiter →';
   };
 
@@ -1307,8 +1308,8 @@ const EmployeeForm: React.FC<EmployeeFormProps> = ({
       border: '1px solid #e0e0e0',
       boxShadow: '0 4px 6px rgba(0,0,0,0.1)'
     }}>
-      <h2 style={{ 
-        margin: '0 0 1.5rem 0', 
+      <h2 style={{
+        margin: '0 0 1.5rem 0',
         color: '#2c3e50',
         borderBottom: '2px solid #f0f0f0',
         paddingBottom: '1rem',
@@ -1322,16 +1323,16 @@ const EmployeeForm: React.FC<EmployeeFormProps> = ({
 
       {/* Aktueller Schritt Titel und Beschreibung */}
       <div style={{ textAlign: 'center', marginBottom: '1.5rem' }}>
-        <h3 style={{ 
-          fontSize: '1.25rem', 
-          fontWeight: 'bold', 
+        <h3 style={{
+          fontSize: '1.25rem',
+          fontWeight: 'bold',
           marginBottom: '0.5rem',
           color: '#2c3e50'
         }}>
           {steps[currentStep].title}
         </h3>
         {steps[currentStep].subtitle && (
-          <p style={{ 
+          <p style={{
             color: '#6c757d',
             fontSize: '1rem'
           }}>
@@ -1346,9 +1347,9 @@ const EmployeeForm: React.FC<EmployeeFormProps> = ({
       </div>
 
       {/* Navigations-Buttons */}
-      <div style={{ 
-        marginTop: '2rem', 
-        display: 'flex', 
+      <div style={{
+        marginTop: '2rem',
+        display: 'flex',
         justifyContent: 'space-between',
         alignItems: 'center'
       }}>
@@ -1368,7 +1369,7 @@ const EmployeeForm: React.FC<EmployeeFormProps> = ({
         >
           {currentStep === 0 ? 'Abbrechen' : '← Zurück'}
         </button>
-        
+
         <button
           onClick={isLastStep ? handleFinalSubmit : goToNextStep}
           disabled={loading}
@@ -1390,16 +1391,16 @@ const EmployeeForm: React.FC<EmployeeFormProps> = ({
 
       {/* Zusätzliche Informationen */}
       {isLastStep && !loading && (
-        <div style={{ 
-          marginTop: '1.5rem', 
-          textAlign: 'center', 
-          color: '#6c757d', 
+        <div style={{
+          marginTop: '1.5rem',
+          textAlign: 'center',
+          color: '#6c757d',
           fontSize: '0.9rem',
           padding: '1rem',
           backgroundColor: '#f8f9fa',
           borderRadius: '6px'
         }}>
-          {mode === 'create' 
+          {mode === 'create'
             ? 'Überprüfen Sie alle Daten, bevor Sie den Mitarbeiter erstellen'
             : 'Überprüfen Sie alle Änderungen, bevor Sie sie speichern'
           }

frontend/src/pages/Settings/Settings.tsx

@@ -1,8 +1,9 @@
-// frontend/src/pages/Settings/Settings.tsx - UPDATED WITH NEW STYLES
+// frontend/src/pages/Settings/Settings.tsx - UPDATED WITH VALIDATION STRATEGY
 import React, { useState, useEffect, useRef } from 'react';
 import { useAuth } from '../../contexts/AuthContext';
 import { employeeService } from '../../services/employeeService';
 import { useNotification } from '../../contexts/NotificationContext';
+import { useBackendValidation } from '../../hooks/useBackendValidation';
 import AvailabilityManager from '../Employees/components/AvailabilityManager';
 import { Employee } from '../../models/Employee';
 import { styles } from './type/SettingsType';
@@ -10,11 +11,12 @@ import { styles } from './type/SettingsType';
 const Settings: React.FC = () => {
   const { user: currentUser, updateUser } = useAuth();
   const { showNotification } = useNotification();
+  const { executeWithValidation, clearErrors, isSubmitting } = useBackendValidation();
+
   const [activeTab, setActiveTab] = useState<'profile' | 'password' | 'availability'>('profile');
-  const [loading, setLoading] = useState(false);
   const [showAvailabilityManager, setShowAvailabilityManager] = useState(false);
-  
-  // Profile form state - updated for firstname/lastname
+
+  // Profile form state
   const [profileForm, setProfileForm] = useState({
     firstname: currentUser?.firstname || '',
     lastname: currentUser?.lastname || ''
@@ -73,7 +75,7 @@ const Settings: React.FC = () => {
     }));
   };
 
-  // Password visibility handlers for current password
+  // Password visibility handlers
   const handleCurrentPasswordMouseDown = () => {
     currentPasswordTimeoutRef.current = setTimeout(() => {
       setShowCurrentPassword(true);
@@ -88,7 +90,6 @@ const Settings: React.FC = () => {
     setShowCurrentPassword(false);
   };
 
-  // Password visibility handlers for new password
   const handleNewPasswordMouseDown = () => {
     newPasswordTimeoutRef.current = setTimeout(() => {
       setShowNewPassword(true);
@@ -103,7 +104,6 @@ const Settings: React.FC = () => {
     setShowNewPassword(false);
   };
 
-  // Password visibility handlers for confirm password
   const handleConfirmPasswordMouseDown = () => {
     confirmPasswordTimeoutRef.current = setTimeout(() => {
       setShowConfirmPassword(true);
@@ -129,7 +129,6 @@ const Settings: React.FC = () => {
     cleanup();
   };
 
-  // Prevent context menu
   const handleContextMenu = (e: React.MouseEvent) => {
     e.preventDefault();
   };
@@ -138,40 +137,46 @@ const Settings: React.FC = () => {
     e.preventDefault();
     if (!currentUser) return;
 
-    // Validation
-    if (!profileForm.firstname.trim() || !profileForm.lastname.trim()) {
+    // BASIC FRONTEND VALIDATION: Only check required fields
+    if (!profileForm.firstname.trim()) {
       showNotification({
         type: 'error',
         title: 'Fehler',
-        message: 'Vorname und Nachname sind erforderlich'
+        message: 'Vorname ist erforderlich'
+      });
+      return;
+    }
+
+    if (!profileForm.lastname.trim()) {
+      showNotification({
+        type: 'error',
+        title: 'Fehler',
+        message: 'Nachname ist erforderlich'
       });
       return;
     }
 
     try {
-      setLoading(true);
-      await employeeService.updateEmployee(currentUser.id, {
-        firstname: profileForm.firstname.trim(),
-        lastname: profileForm.lastname.trim()
-      });
+      // Use executeWithValidation to handle backend validation
+      await executeWithValidation(async () => {
+        const updatedEmployee = await employeeService.updateEmployee(currentUser.id, {
+          firstname: profileForm.firstname.trim(),
+          lastname: profileForm.lastname.trim()
+        });
 
-      // Update the auth context with new user data
-      const updatedUser = await employeeService.getEmployee(currentUser.id);
-      updateUser(updatedUser);
+        // Update the auth context with new user data
+        updateUser(updatedEmployee);
 
-      showNotification({
-        type: 'success',
-        title: 'Erfolg',
-        message: 'Profil erfolgreich aktualisiert'
+        showNotification({
+          type: 'success',
+          title: 'Erfolg',
+          message: 'Profil erfolgreich aktualisiert'
+        });
       });
-    } catch (error: any) {
-      showNotification({
-        type: 'error',
-        title: 'Fehler',
-        message: error.message || 'Profil konnte nicht aktualisiert werden'
-      });
-    } finally {
-      setLoading(false);
+    } catch (error) {
+      // Backend validation errors are already handled by executeWithValidation
+      // We only need to handle unexpected errors here
+      console.error('Unexpected error:', error);
     }
   };
 
@@ -179,12 +184,30 @@ const Settings: React.FC = () => {
     e.preventDefault();
     if (!currentUser) return;
 
-    // Validation
-    if (passwordForm.newPassword.length < 6) {
+    // BASIC FRONTEND VALIDATION: Only check minimum requirements
+    if (!passwordForm.currentPassword) {
       showNotification({
         type: 'error',
         title: 'Fehler',
-        message: 'Das neue Passwort muss mindestens 6 Zeichen lang sein'
+        message: 'Aktuelles Passwort ist erforderlich'
+      });
+      return;
+    }
+
+    if (!passwordForm.newPassword) {
+      showNotification({
+        type: 'error',
+        title: 'Fehler',
+        message: 'Neues Passwort ist erforderlich'
+      });
+      return;
+    }
+
+    if (passwordForm.newPassword.length < 8) {
+      showNotification({
+        type: 'error',
+        title: 'Fehler',
+        message: 'Das neue Passwort muss mindestens 8 Zeichen lang sein'
       });
       return;
     }
@@ -199,34 +222,30 @@ const Settings: React.FC = () => {
     }
 
     try {
-      setLoading(true);
-      
-      // Use the actual password change endpoint
-      await employeeService.changePassword(currentUser.id, {
-        currentPassword: passwordForm.currentPassword,
-        newPassword: passwordForm.newPassword
-      });
+      // Use executeWithValidation to handle backend validation
+      await executeWithValidation(async () => {
+        await employeeService.changePassword(currentUser.id, {
+          currentPassword: passwordForm.currentPassword,
+          newPassword: passwordForm.newPassword,
+          confirmPassword: passwordForm.confirmPassword
+        });
 
-      showNotification({
-        type: 'success',
-        title: 'Erfolg',
-        message: 'Passwort erfolgreich geändert'
-      });
+        showNotification({
+          type: 'success',
+          title: 'Erfolg',
+          message: 'Passwort erfolgreich geändert'
+        });
 
-      // Clear password form
-      setPasswordForm({
-        currentPassword: '',
-        newPassword: '',
-        confirmPassword: ''
+        // Clear password form
+        setPasswordForm({
+          currentPassword: '',
+          newPassword: '',
+          confirmPassword: ''
+        });
       });
-    } catch (error: any) {
-      showNotification({
-        type: 'error',
-        title: 'Fehler',
-        message: error.message || 'Passwort konnte nicht geändert werden'
-      });
-    } finally {
-      setLoading(false);
+    } catch (error) {
+      // Backend validation errors are already handled by executeWithValidation
+      console.error('Unexpected error:', error);
     }
   };
 
@@ -243,12 +262,18 @@ const Settings: React.FC = () => {
     setShowAvailabilityManager(false);
   };
 
+  // Clear validation errors when switching tabs
+  const handleTabChange = (tab: 'profile' | 'password' | 'availability') => {
+    clearErrors();
+    setActiveTab(tab);
+  };
+
   if (!currentUser) {
-    return <div style={{ 
-      textAlign: 'center', 
-      padding: '3rem', 
-      color: '#666', 
-      fontSize: '1.1rem' 
+    return <div style={{
+      textAlign: 'center',
+      padding: '3rem',
+      color: '#666',
+      fontSize: '1.1rem'
     }}>Nicht eingeloggt</div>;
   }
 
@@ -270,10 +295,10 @@ const Settings: React.FC = () => {
           <h1 style={styles.title}>Einstellungen</h1>
           <div style={styles.subtitle}>Verwalten Sie Ihre Kontoeinstellungen und Präferenzen</div>
         </div>
-        
+
         <div style={styles.tabs}>
           <button
-            onClick={() => setActiveTab('profile')}
+            onClick={() => handleTabChange('profile')}
             style={{
               ...styles.tab,
               ...(activeTab === 'profile' ? styles.tabActive : {})
@@ -299,9 +324,9 @@ const Settings: React.FC = () => {
               <span style={{ fontSize: '0.8rem', opacity: 0.7, marginTop: '2px' }}>Persönliche Informationen</span>
             </div>
           </button>
-          
+
           <button
-            onClick={() => setActiveTab('password')}
+            onClick={() => handleTabChange('password')}
             style={{
               ...styles.tab,
               ...(activeTab === 'password' ? styles.tabActive : {})
@@ -327,9 +352,9 @@ const Settings: React.FC = () => {
               <span style={{ fontSize: '0.8rem', opacity: 0.7, marginTop: '2px' }}>Sicherheitseinstellungen</span>
             </div>
           </button>
-          
+
           <button
-            onClick={() => setActiveTab('availability')}
+            onClick={() => handleTabChange('availability')}
             style={{
               ...styles.tab,
               ...(activeTab === 'availability' ? styles.tabActive : {})
@@ -369,7 +394,7 @@ const Settings: React.FC = () => {
                 Verwalten Sie Ihre persönlichen Informationen und Kontaktdaten
               </p>
             </div>
-            
+
             <form onSubmit={handleProfileUpdate} style={{ marginTop: '2rem' }}>
               <div style={styles.formGrid}>
                 {/* Read-only information */}
@@ -480,28 +505,28 @@ const Settings: React.FC = () => {
               <div style={styles.actions}>
                 <button
                   type="submit"
-                  disabled={loading || !profileForm.firstname.trim() || !profileForm.lastname.trim()}
+                  disabled={isSubmitting || !profileForm.firstname.trim() || !profileForm.lastname.trim()}
                   style={{
                     ...styles.button,
                     ...styles.buttonPrimary,
-                    ...((loading || !profileForm.firstname.trim() || !profileForm.lastname.trim()) ? styles.buttonDisabled : {})
+                    ...((isSubmitting || !profileForm.firstname.trim() || !profileForm.lastname.trim()) ? styles.buttonDisabled : {})
                   }}
                   onMouseEnter={(e) => {
-                    if (!loading && profileForm.firstname.trim() && profileForm.lastname.trim()) {
+                    if (!isSubmitting && profileForm.firstname.trim() && profileForm.lastname.trim()) {
                       e.currentTarget.style.background = styles.buttonPrimaryHover.background;
                       e.currentTarget.style.transform = styles.buttonPrimaryHover.transform;
                       e.currentTarget.style.boxShadow = styles.buttonPrimaryHover.boxShadow;
                     }
                   }}
                   onMouseLeave={(e) => {
-                    if (!loading && profileForm.firstname.trim() && profileForm.lastname.trim()) {
+                    if (!isSubmitting && profileForm.firstname.trim() && profileForm.lastname.trim()) {
                       e.currentTarget.style.background = styles.buttonPrimary.background;
                       e.currentTarget.style.transform = 'none';
                       e.currentTarget.style.boxShadow = styles.buttonPrimary.boxShadow;
                     }
                   }}
                 >
-                  {loading ? '⏳ Wird gespeichert...' : 'Profil aktualisieren'}
+                  {isSubmitting ? '⏳ Wird gespeichert...' : 'Profil aktualisieren'}
                 </button>
               </div>
             </form>
@@ -517,7 +542,7 @@ const Settings: React.FC = () => {
                 Aktualisieren Sie Ihr Passwort für erhöhte Sicherheit
               </p>
             </div>
-            
+
             <form onSubmit={handlePasswordUpdate} style={{ marginTop: '2rem' }}>
               <div style={styles.formGridCompact}>
                 {/* Current Password Field */}
@@ -575,9 +600,9 @@ const Settings: React.FC = () => {
                       value={passwordForm.newPassword}
                       onChange={handlePasswordChange}
                       required
-                      minLength={6}
+                      minLength={8}
                       style={styles.fieldInputWithIcon}
-                      placeholder="Mindestens 6 Zeichen"
+                      placeholder="Mindestens 8 Zeichen"
                       onFocus={(e) => {
                         e.target.style.borderColor = '#1a1325';
                         e.target.style.boxShadow = '0 0 0 3px rgba(26, 19, 37, 0.1)';
@@ -606,7 +631,7 @@ const Settings: React.FC = () => {
                     </button>
                   </div>
                   <div style={styles.fieldHint}>
-                    Das Passwort muss mindestens 6 Zeichen lang sein.
+                    Das Passwort muss mindestens 8 Zeichen lang sein.
                   </div>
                 </div>
 
@@ -657,28 +682,28 @@ const Settings: React.FC = () => {
               <div style={styles.actions}>
                 <button
                   type="submit"
-                  disabled={loading || !passwordForm.currentPassword || !passwordForm.newPassword || !passwordForm.confirmPassword}
+                  disabled={isSubmitting || !passwordForm.currentPassword || !passwordForm.newPassword || !passwordForm.confirmPassword}
                   style={{
                     ...styles.button,
                     ...styles.buttonPrimary,
-                    ...((loading || !passwordForm.currentPassword || !passwordForm.newPassword || !passwordForm.confirmPassword) ? styles.buttonDisabled : {})
+                    ...((isSubmitting || !passwordForm.currentPassword || !passwordForm.newPassword || !passwordForm.confirmPassword) ? styles.buttonDisabled : {})
                   }}
                   onMouseEnter={(e) => {
-                    if (!loading && passwordForm.currentPassword && passwordForm.newPassword && passwordForm.confirmPassword) {
+                    if (!isSubmitting && passwordForm.currentPassword && passwordForm.newPassword && passwordForm.confirmPassword) {
                       e.currentTarget.style.background = styles.buttonPrimaryHover.background;
                       e.currentTarget.style.transform = styles.buttonPrimaryHover.transform;
                       e.currentTarget.style.boxShadow = styles.buttonPrimaryHover.boxShadow;
                     }
                   }}
                   onMouseLeave={(e) => {
-                    if (!loading && passwordForm.currentPassword && passwordForm.newPassword && passwordForm.confirmPassword) {
+                    if (!isSubmitting && passwordForm.currentPassword && passwordForm.newPassword && passwordForm.confirmPassword) {
                       e.currentTarget.style.background = styles.buttonPrimary.background;
                       e.currentTarget.style.transform = 'none';
                       e.currentTarget.style.boxShadow = styles.buttonPrimary.boxShadow;
                     }
                   }}
                 >
-                  {loading ? '⏳ Wird geändert...' : 'Passwort ändern'}
+                  {isSubmitting ? '⏳ Wird geändert...' : 'Passwort ändern'}
                 </button>
               </div>
             </form>
@@ -694,16 +719,16 @@ const Settings: React.FC = () => {
                 Legen Sie Ihre persönliche Verfügbarkeit für Schichtpläne fest
               </p>
             </div>
-            
+
             <div style={styles.availabilityCard}>
               <div style={styles.availabilityIcon}>📅</div>
               <h3 style={styles.availabilityTitle}>Verfügbarkeit verwalten</h3>
               <p style={styles.availabilityDescription}>
                 Hier können Sie Ihre persönliche Verfügbarkeit für Schichtpläne festlegen.
-                Legen Sie für jeden Tag und jede Schicht fest, ob Sie bevorzugt, möglicherweise 
+                Legen Sie für jeden Tag und jede Schicht fest, ob Sie bevorzugt, möglicherweise
                 oder nicht verfügbar sind.
               </p>
-              
+
               <button
                 onClick={() => setShowAvailabilityManager(true)}
                 style={{

frontend/src/pages/Settings/type/SettingsType.tsx

@@ -1,275 +1,275 @@
-// frontend/src/pages/Settings/type/SettingsType.tsx - CORRECTED
+// frontend/src/pages/Settings/type/SettingsType.tsx
 export const styles = {
-    container: {
-      display: 'flex',
-      minHeight: 'calc(100vh - 120px)',
-      background: '#FBFAF6',
-      padding: '2rem',
-      maxWidth: '1200px',
-      margin: '0 auto',
-      gap: '2rem',
-    },
-    sidebar: {
-      width: '280px',
-      background: '#FBFAF6',
-      borderRadius: '16px',
-      border: '1px solid rgba(255, 255, 255, 0.8)',
-      boxShadow: '0 4px 20px rgba(0, 0, 0, 0.06), 0 1px 4px rgba(0, 0, 0, 0.04)',
-      padding: '1.5rem',
-      height: 'fit-content',
-      position: 'sticky' as const,
-      top: '2rem',
-    },
-    header: {
-      marginBottom: '2rem',
-      paddingBottom: '1.5rem',
-      borderBottom: '1px solid rgba(26, 19, 37, 0.1)',
-    },
-    title: {
-      fontSize: '1.5rem',
-      fontWeight: 600,
-      color: '#161718',
-      margin: '0 0 0.5rem 0',
-    },
-    subtitle: {
-      fontSize: '0.95rem',
-      color: '#666',
-      fontWeight: 400,
-      lineHeight: 1.5,
-    },
-    tabs: {
-      display: 'flex',
-      flexDirection: 'column' as const,
-      gap: '0.5rem',
-    },
-    tab: {
-      display: 'flex',
-      alignItems: 'center',
-      gap: '1rem',
-      padding: '1rem 1.25rem',
-      background: 'transparent',
-      color: '#666',
-      border: 'none',
-      borderRadius: '8px',
-      cursor: 'pointer',
-      fontWeight: 500,
-      transition: 'all 0.3s cubic-bezier(0.4, 0, 0.2, 1)',
-      textAlign: 'left' as const,
-      width: '100%',
-    },
-    tabActive: {
-      background: '#51258f',
-      color: '#FBFAF6',
-      boxShadow: '0 4px 12px rgba(26, 19, 37, 0.15)',
-    },
-    tabHover: {
-      background: 'rgba(81, 37, 143, 0.1)',
-      color: '#1a1325',
-      transform: 'translateX(4px)',
-    },
-    content: {
-      flex: 1,
-      background: '#FBFAF6',
-      padding: '2.5rem',
-      borderRadius: '16px',
-      border: '1px solid rgba(255, 255, 255, 0.8)',
-      boxShadow: '0 4px 20px rgba(0, 0, 0, 0.06), 0 1px 4px rgba(0, 0, 0, 0.04)',
-      backdropFilter: 'blur(10px)',
-      minHeight: '100px',
-    },
-    section: {
-      marginBottom: '2rem',
-    },
-    sectionTitle: {
-      fontSize: '1.75rem',
-      fontWeight: 600,
-      color: '#161718',
-      margin: '0 0 0.5rem 0',
-    },
-    sectionDescription: {
-      color: '#666',
-      fontSize: '1rem',
-      margin: 0,
-      lineHeight: 1.5,
-    },
-    formGrid: {
-      display: 'grid',
-      gap: '1.5rem',
-    },
-    formGridCompact: {
-      display: 'grid',
-      gap: '1.5rem',
-      maxWidth: '500px',
-    },
-    infoCard: {
-      padding: '1.5rem',
-      background: 'rgba(26, 19, 37, 0.02)',
-      borderRadius: '12px',
-      border: '1px solid rgba(26, 19, 37, 0.1)',
-    },
-    infoCardTitle: {
-      fontSize: '1rem',
-      fontWeight: 600,
-      color: '#1a1325',
-      margin: '0 0 1rem 0',
-    },
-    infoGrid: {
-      display: 'grid',
-      gridTemplateColumns: '1fr 1fr',
-      gap: '1rem',
-    },
-    field: {
-      display: 'flex',
-      flexDirection: 'column' as const,
-      gap: '0.5rem',
-      width: '100%',
-    },
-    fieldLabel: {
-      fontSize: '0.9rem',
-      fontWeight: 600,
-      color: '#161718',
-      width: '100%',
-    },
-    fieldInputContainer: {
-      position: 'relative' as const,
-      width: '100%',
-    },
-    fieldInput: {
-      padding: '0.875rem 1rem',
-      border: '1.5px solid #e8e8e8',
-      borderRadius: '8px',
-      fontSize: '0.95rem',
-      background: '#FBFAF6',
-      transition: 'all 0.3s cubic-bezier(0.4, 0, 0.2, 1)',
-      color: '#161718',
-      width: '100%',
-      boxSizing: 'border-box' as const,
-    },
-    fieldInputWithIcon: {
-      padding: '0.875rem 1rem',
-      border: '1.5px solid #e8e8e8',
-      borderRadius: '8px',
-      fontSize: '0.95rem',
-      background: '#FBFAF6',
-      transition: 'all 0.3s cubic-bezier(0.4, 0, 0.2, 1)',
-      color: '#161718',
-      width: '100%',
-      paddingRight: '40px',
-      boxSizing: 'border-box' as const,
-    },
-    fieldInputDisabled: {
-      padding: '0.875rem 1rem',
-      border: '1.5px solid rgba(26, 19, 37, 0.1)',
-      borderRadius: '8px',
-      fontSize: '0.95rem',
-      background: 'rgba(26, 19, 37, 0.05)',
-      color: '#666',
-      cursor: 'not-allowed',
-      width: '100%',
-      boxSizing: 'border-box' as const,
-    },
-    fieldHint: {
-      fontSize: '0.8rem',
-      color: '#888',
-      marginTop: '0.25rem',
-      width: '100%',
-    },
-    passwordToggleButton: {
-      position: 'absolute' as const,
-      right: '10px',
-      top: '50%',
-      transform: 'translateY(-50%)',
-      background: 'none',
-      border: 'none',
-      cursor: 'pointer',
-      padding: '5px',
-      borderRadius: '4px',
-      transition: 'background-color 0.2s',
-      userSelect: 'none' as const,
-      WebkitUserSelect: 'none' as const,
-      touchAction: 'manipulation' as const,
-    },
-    actions: {
-      display: 'flex',
-      justifyContent: 'flex-end',
-      marginTop: '2.5rem',
-      paddingTop: '1.5rem',
-      borderTop: '1px solid rgba(26, 19, 37, 0.1)',
-    },
-    button: {
-      padding: '0.875rem 2rem',
-      border: 'none',
-      borderRadius: '8px',
-      fontSize: '0.95rem',
-      fontWeight: 600,
-      cursor: 'pointer',
-      transition: 'all 0.3s cubic-bezier(0.4, 0, 0.2, 1)',
-      position: 'relative' as const,
-      overflow: 'hidden' as const,
-    },
-    buttonPrimary: {
-      background: '#1a1325',
-      color: '#FBFAF6',
-      boxShadow: '0 2px 8px rgba(26, 19, 37, 0.2)',
-    },
-    buttonPrimaryHover: {
-      background: '#24163a',
-      transform: 'translateY(-1px)',
-      boxShadow: '0 4px 16px rgba(26, 19, 37, 0.3)',
-    },
-    buttonDisabled: {
-      background: '#ccc',
-      color: '#666',
-      cursor: 'not-allowed',
-      transform: 'none',
-      boxShadow: 'none',
-    },
-    availabilityCard: {
-      padding: '3rem 2rem',
-      textAlign: 'center' as const,
-      background: 'rgba(26, 19, 37, 0.03)',
-      borderRadius: '16px',
-      border: '2px dashed rgba(26, 19, 37, 0.1)',
-      backdropFilter: 'blur(10px)',
-    },
-    availabilityIcon: {
-      fontSize: '3rem',
-      marginBottom: '1.5rem',
-      opacity: 0.8,
-    },
-    availabilityTitle: {
-      fontSize: '1.5rem',
-      fontWeight: 600,
-      color: '#161718',
-      margin: '0 0 1rem 0',
-    },
-    availabilityDescription: {
-      color: '#666',
-      marginBottom: '2rem',
-      lineHeight: 1.6,
-      maxWidth: '500px',
-      marginLeft: 'auto',
-      marginRight: 'auto',
-    },
-    infoHint: {
-      padding: '1.25rem',
-      background: 'rgba(26, 19, 37, 0.05)',
-      border: '1px solid rgba(26, 19, 37, 0.1)',
-      borderRadius: '12px',
-      fontSize: '0.9rem',
-      color: '#161718',
-      textAlign: 'left' as const,
-      maxWidth: '400px',
-      margin: '0 auto',
-    },
-    infoList: {
-      margin: '0.75rem 0 0 1rem',
-      padding: 0,
-      listStyle: 'none',
-    },
-    infoListItem: {
-      marginBottom: '0.5rem',
-      position: 'relative' as const,
-      paddingLeft: '1rem',
-    },
-  };
+  container: {
+    display: 'flex',
+    minHeight: 'calc(100vh - 120px)',
+    background: '#FBFAF6',
+    padding: '2rem',
+    maxWidth: '1200px',
+    margin: '0 auto',
+    gap: '2rem',
+  },
+  sidebar: {
+    width: '280px',
+    background: '#FBFAF6',
+    borderRadius: '16px',
+    border: '1px solid rgba(255, 255, 255, 0.8)',
+    boxShadow: '0 4px 20px rgba(0, 0, 0, 0.06), 0 1px 4px rgba(0, 0, 0, 0.04)',
+    padding: '1.5rem',
+    height: 'fit-content',
+    position: 'sticky' as const,
+    top: '2rem',
+  },
+  header: {
+    marginBottom: '2rem',
+    paddingBottom: '1.5rem',
+    borderBottom: '1px solid rgba(26, 19, 37, 0.1)',
+  },
+  title: {
+    fontSize: '1.5rem',
+    fontWeight: 600,
+    color: '#161718',
+    margin: '0 0 0.5rem 0',
+  },
+  subtitle: {
+    fontSize: '0.95rem',
+    color: '#666',
+    fontWeight: 400,
+    lineHeight: 1.5,
+  },
+  tabs: {
+    display: 'flex',
+    flexDirection: 'column' as const,
+    gap: '0.5rem',
+  },
+  tab: {
+    display: 'flex',
+    alignItems: 'center',
+    gap: '1rem',
+    padding: '1rem 1.25rem',
+    background: 'transparent',
+    color: '#666',
+    border: 'none',
+    borderRadius: '8px',
+    cursor: 'pointer',
+    fontWeight: 500,
+    transition: 'all 0.3s cubic-bezier(0.4, 0, 0.2, 1)',
+    textAlign: 'left' as const,
+    width: '100%',
+  },
+  tabActive: {
+    background: '#51258f',
+    color: '#FBFAF6',
+    boxShadow: '0 4px 12px rgba(26, 19, 37, 0.15)',
+  },
+  tabHover: {
+    background: 'rgba(81, 37, 143, 0.1)',
+    color: '#1a1325',
+    transform: 'translateX(4px)',
+  },
+  content: {
+    flex: 1,
+    background: '#FBFAF6',
+    padding: '2.5rem',
+    borderRadius: '16px',
+    border: '1px solid rgba(255, 255, 255, 0.8)',
+    boxShadow: '0 4px 20px rgba(0, 0, 0, 0.06), 0 1px 4px rgba(0, 0, 0, 0.04)',
+    backdropFilter: 'blur(10px)',
+    minHeight: '100px',
+  },
+  section: {
+    marginBottom: '2rem',
+  },
+  sectionTitle: {
+    fontSize: '1.75rem',
+    fontWeight: 600,
+    color: '#161718',
+    margin: '0 0 0.5rem 0',
+  },
+  sectionDescription: {
+    color: '#666',
+    fontSize: '1rem',
+    margin: 0,
+    lineHeight: 1.5,
+  },
+  formGrid: {
+    display: 'grid',
+    gap: '1.5rem',
+  },
+  formGridCompact: {
+    display: 'grid',
+    gap: '1.5rem',
+    maxWidth: '500px',
+  },
+  infoCard: {
+    padding: '1.5rem',
+    background: 'rgba(26, 19, 37, 0.02)',
+    borderRadius: '12px',
+    border: '1px solid rgba(26, 19, 37, 0.1)',
+  },
+  infoCardTitle: {
+    fontSize: '1rem',
+    fontWeight: 600,
+    color: '#1a1325',
+    margin: '0 0 1rem 0',
+  },
+  infoGrid: {
+    display: 'grid',
+    gridTemplateColumns: '1fr 1fr',
+    gap: '1rem',
+  },
+  field: {
+    display: 'flex',
+    flexDirection: 'column' as const,
+    gap: '0.5rem',
+    width: '100%',
+  },
+  fieldLabel: {
+    fontSize: '0.9rem',
+    fontWeight: 600,
+    color: '#161718',
+    width: '100%',
+  },
+  fieldInputContainer: {
+    position: 'relative' as const,
+    width: '100%',
+  },
+  fieldInput: {
+    padding: '0.875rem 1rem',
+    border: '1.5px solid #e8e8e8',
+    borderRadius: '8px',
+    fontSize: '0.95rem',
+    background: '#FBFAF6',
+    transition: 'all 0.3s cubic-bezier(0.4, 0, 0.2, 1)',
+    color: '#161718',
+    width: '100%',
+    boxSizing: 'border-box' as const,
+  },
+  fieldInputWithIcon: {
+    padding: '0.875rem 1rem',
+    border: '1.5px solid #e8e8e8',
+    borderRadius: '8px',
+    fontSize: '0.95rem',
+    background: '#FBFAF6',
+    transition: 'all 0.3s cubic-bezier(0.4, 0, 0.2, 1)',
+    color: '#161718',
+    width: '100%',
+    paddingRight: '40px',
+    boxSizing: 'border-box' as const,
+  },
+  fieldInputDisabled: {
+    padding: '0.875rem 1rem',
+    border: '1.5px solid rgba(26, 19, 37, 0.1)',
+    borderRadius: '8px',
+    fontSize: '0.95rem',
+    background: 'rgba(26, 19, 37, 0.05)',
+    color: '#666',
+    cursor: 'not-allowed',
+    width: '100%',
+    boxSizing: 'border-box' as const,
+  },
+  fieldHint: {
+    fontSize: '0.8rem',
+    color: '#888',
+    marginTop: '0.25rem',
+    width: '100%',
+  },
+  passwordToggleButton: {
+    position: 'absolute' as const,
+    right: '10px',
+    top: '50%',
+    transform: 'translateY(-50%)',
+    background: 'none',
+    border: 'none',
+    cursor: 'pointer',
+    padding: '5px',
+    borderRadius: '4px',
+    transition: 'background-color 0.2s',
+    userSelect: 'none' as const,
+    WebkitUserSelect: 'none' as const,
+    touchAction: 'manipulation' as const,
+  },
+  actions: {
+    display: 'flex',
+    justifyContent: 'flex-end',
+    marginTop: '2.5rem',
+    paddingTop: '1.5rem',
+    borderTop: '1px solid rgba(26, 19, 37, 0.1)',
+  },
+  button: {
+    padding: '0.875rem 2rem',
+    border: 'none',
+    borderRadius: '8px',
+    fontSize: '0.95rem',
+    fontWeight: 600,
+    cursor: 'pointer',
+    transition: 'all 0.3s cubic-bezier(0.4, 0, 0.2, 1)',
+    position: 'relative' as const,
+    overflow: 'hidden' as const,
+  },
+  buttonPrimary: {
+    background: '#1a1325',
+    color: '#FBFAF6',
+    boxShadow: '0 2px 8px rgba(26, 19, 37, 0.2)',
+  },
+  buttonPrimaryHover: {
+    background: '#24163a',
+    transform: 'translateY(-1px)',
+    boxShadow: '0 4px 16px rgba(26, 19, 37, 0.3)',
+  },
+  buttonDisabled: {
+    background: '#ccc',
+    color: '#666',
+    cursor: 'not-allowed',
+    transform: 'none',
+    boxShadow: 'none',
+  },
+  availabilityCard: {
+    padding: '3rem 2rem',
+    textAlign: 'center' as const,
+    background: 'rgba(26, 19, 37, 0.03)',
+    borderRadius: '16px',
+    border: '2px dashed rgba(26, 19, 37, 0.1)',
+    backdropFilter: 'blur(10px)',
+  },
+  availabilityIcon: {
+    fontSize: '3rem',
+    marginBottom: '1.5rem',
+    opacity: 0.8,
+  },
+  availabilityTitle: {
+    fontSize: '1.5rem',
+    fontWeight: 600,
+    color: '#161718',
+    margin: '0 0 1rem 0',
+  },
+  availabilityDescription: {
+    color: '#666',
+    marginBottom: '2rem',
+    lineHeight: 1.6,
+    maxWidth: '500px',
+    marginLeft: 'auto',
+    marginRight: 'auto',
+  },
+  infoHint: {
+    padding: '1.25rem',
+    background: 'rgba(26, 19, 37, 0.05)',
+    border: '1px solid rgba(26, 19, 37, 0.1)',
+    borderRadius: '12px',
+    fontSize: '0.9rem',
+    color: '#161718',
+    textAlign: 'left' as const,
+    maxWidth: '400px',
+    margin: '0 auto',
+  },
+  infoList: {
+    margin: '0.75rem 0 0 1rem',
+    padding: 0,
+    listStyle: 'none',
+  },
+  infoListItem: {
+    marginBottom: '0.5rem',
+    position: 'relative' as const,
+    paddingLeft: '1rem',
+  },
+};

frontend/src/pages/Setup/Setup.tsx

@@ -32,7 +32,7 @@ const useSetup = () => {
 
   const steps: SetupStep[] = [
     {
-      id: 'profile-setup', 
+      id: 'profile-setup',
       title: 'Profilinformationen',
       subtitle: 'Geben Sie Ihre persönlichen Daten ein'
     },
@@ -62,8 +62,8 @@ const useSetup = () => {
   };
 
   const validateStep2 = (): boolean => {
-    if (formData.password.length < 6) {
-      setError('Das Passwort muss mindestens 6 Zeichen lang sein.');
+    if (formData.password.length < 8) {
+      setError('Das Passwort muss mindestens 8 Zeichen lang sein.');
       return false;
     }
     if (formData.password !== formData.confirmPassword) {
@@ -87,7 +87,7 @@ const useSetup = () => {
   // ===== NAVIGATIONS-FUNKTIONEN =====
   const goToNextStep = async (): Promise<void> => {
     setError('');
-    
+
     if (!validateCurrentStep(currentStep)) {
       return;
     }
@@ -111,7 +111,7 @@ const useSetup = () => {
 
   const handleStepChange = (stepIndex: number): void => {
     setError('');
-    
+
     // Nur erlauben, zu bereits validierten Schritten zu springen
     // oder zum nächsten Schritt nach dem aktuellen
     if (stepIndex <= currentStep + 1) {
@@ -163,7 +163,7 @@ const useSetup = () => {
 
       // Setup Status neu prüfen
       await checkSetupStatus();
-      
+
     } catch (err: any) {
       console.error('❌ Setup error:', err);
       setError(err.message || 'Ein unerwarteter Fehler ist aufgetreten');
@@ -177,7 +177,7 @@ const useSetup = () => {
     if (!formData.firstname.trim() || !formData.lastname.trim()) {
       return 'vorname.nachname@sp.de';
     }
-    
+
     const cleanFirstname = formData.firstname.toLowerCase().replace(/[^a-z0-9]/g, '');
     const cleanLastname = formData.lastname.toLowerCase().replace(/[^a-z0-9]/g, '');
     return `${cleanFirstname}.${cleanLastname}@sp.de`;
@@ -186,8 +186,8 @@ const useSetup = () => {
   const isStepCompleted = (stepIndex: number): boolean => {
     switch (stepIndex) {
       case 0:
-        return formData.password.length >= 6 && 
-               formData.password === formData.confirmPassword;
+        return formData.password.length >= 8 &&
+          formData.password === formData.confirmPassword;
       case 1:
         return !!formData.firstname.trim() && !!formData.lastname.trim();
       default:
@@ -202,13 +202,13 @@ const useSetup = () => {
     loading,
     error,
     steps,
-    
+
     // Actions
     goToNextStep,
     goToPrevStep,
     handleStepChange,
     handleInputChange,
-    
+
     // Helpers
     getEmailPreview,
     isStepCompleted
@@ -223,16 +223,16 @@ interface StepContentProps {
   currentStep: number;
 }
 
-const Step1Content: React.FC<StepContentProps> = ({ 
-  formData, 
+const Step1Content: React.FC<StepContentProps> = ({
+  formData,
   onInputChange,
-  getEmailPreview 
+  getEmailPreview
 }) => (
   <div style={{ display: 'flex', flexDirection: 'column', gap: '1.5rem' }}>
     <div>
-      <label style={{ 
-        display: 'block', 
-        marginBottom: '0.5rem', 
+      <label style={{
+        display: 'block',
+        marginBottom: '0.5rem',
         fontWeight: '600',
         color: '#495057'
       }}>
@@ -257,9 +257,9 @@ const Step1Content: React.FC<StepContentProps> = ({
     </div>
 
     <div>
-      <label style={{ 
-        display: 'block', 
-        marginBottom: '0.5rem', 
+      <label style={{
+        display: 'block',
+        marginBottom: '0.5rem',
         fontWeight: '600',
         color: '#495057'
       }}>
@@ -284,17 +284,17 @@ const Step1Content: React.FC<StepContentProps> = ({
     </div>
 
     <div>
-      <label style={{ 
-        display: 'block', 
-        marginBottom: '0.5rem', 
+      <label style={{
+        display: 'block',
+        marginBottom: '0.5rem',
         fontWeight: '600',
         color: '#495057'
       }}>
         Automatisch generierte E-Mail
       </label>
-      <div style={{ 
-        padding: '0.75rem', 
-        backgroundColor: '#e9ecef', 
+      <div style={{
+        padding: '0.75rem',
+        backgroundColor: '#e9ecef',
         border: '1px solid #ced4da',
         borderRadius: '6px',
         color: '#495057',
@@ -303,8 +303,8 @@ const Step1Content: React.FC<StepContentProps> = ({
       }}>
         {getEmailPreview()}
       </div>
-      <div style={{ 
-        fontSize: '0.875rem', 
+      <div style={{
+        fontSize: '0.875rem',
         color: '#6c757d',
         marginTop: '0.25rem'
       }}>
@@ -315,15 +315,15 @@ const Step1Content: React.FC<StepContentProps> = ({
 );
 
 
-const Step2Content: React.FC<StepContentProps> = ({ 
-  formData, 
-  onInputChange 
+const Step2Content: React.FC<StepContentProps> = ({
+  formData,
+  onInputChange
 }) => (
   <div style={{ display: 'flex', flexDirection: 'column', gap: '1.5rem' }}>
     <div>
-      <label style={{ 
-        display: 'block', 
-        marginBottom: '0.5rem', 
+      <label style={{
+        display: 'block',
+        marginBottom: '0.5rem',
         fontWeight: '600',
         color: '#495057'
       }}>
@@ -342,16 +342,16 @@ const Step2Content: React.FC<StepContentProps> = ({
           fontSize: '1rem',
           transition: 'border-color 0.3s ease'
         }}
-        placeholder="Mindestens 6 Zeichen"
+        placeholder="Mindestens 8 Zeichen"
         required
         autoComplete="new-password"
       />
     </div>
-    
+
     <div>
-      <label style={{ 
-        display: 'block', 
-        marginBottom: '0.5rem', 
+      <label style={{
+        display: 'block',
+        marginBottom: '0.5rem',
         fontWeight: '600',
         color: '#495057'
       }}>
@@ -378,26 +378,26 @@ const Step2Content: React.FC<StepContentProps> = ({
   </div>
 );
 
-const Step3Content: React.FC<StepContentProps> = ({ 
+const Step3Content: React.FC<StepContentProps> = ({
   formData,
-  getEmailPreview 
+  getEmailPreview
 }) => (
   <div style={{ display: 'flex', flexDirection: 'column', gap: '1.5rem' }}>
-    <div style={{ 
-      backgroundColor: '#f8f9fa', 
-      padding: '1.5rem', 
+    <div style={{
+      backgroundColor: '#f8f9fa',
+      padding: '1.5rem',
       borderRadius: '8px',
       border: '1px solid #e9ecef'
     }}>
-      <h3 style={{ 
-        marginBottom: '1rem', 
+      <h3 style={{
+        marginBottom: '1rem',
         color: '#2c3e50',
         fontSize: '1.1rem',
         fontWeight: '600'
       }}>
         Zusammenfassung
       </h3>
-      
+
       <div style={{ display: 'flex', flexDirection: 'column', gap: '0.75rem' }}>
         <div style={{ display: 'flex', justifyContent: 'space-between' }}>
           <span style={{ color: '#6c757d' }}>E-Mail:</span>
@@ -413,15 +413,15 @@ const Step3Content: React.FC<StepContentProps> = ({
         </div>
       </div>
     </div>
-    
-    <div style={{ 
+
+    <div style={{
       padding: '1rem',
       backgroundColor: '#e7f3ff',
       borderRadius: '6px',
       border: '1px solid #b6d7e8',
       color: '#2c3e50'
     }}>
-      <strong>💡 Wichtig:</strong> Nach dem Setup können Sie sich mit Ihrer 
+      <strong>💡 Wichtig:</strong> Nach dem Setup können Sie sich mit Ihrer
       automatisch generierten E-Mail anmelden.
     </div>
   </div>
@@ -464,7 +464,7 @@ const Setup: React.FC = () => {
 
   const getNextButtonText = (): string => {
     if (loading) return '⏳ Wird verarbeitet...';
-    
+
     switch (currentStep) {
       case 0:
         return 'Weiter →';
@@ -479,9 +479,9 @@ const Setup: React.FC = () => {
 
   // Inline Step Indicator Komponente
   const StepIndicator: React.FC = () => (
-    <div style={{ 
-      display: 'flex', 
-      justifyContent: 'space-between', 
+    <div style={{
+      display: 'flex',
+      justifyContent: 'space-between',
       alignItems: 'center',
       marginBottom: '2.5rem',
       position: 'relative',
@@ -497,18 +497,18 @@ const Setup: React.FC = () => {
         backgroundColor: '#e9ecef',
         zIndex: 1
       }} />
-      
+
       {steps.map((step, index) => {
         const isCompleted = index < currentStep;
         const isCurrent = index === currentStep;
         const isClickable = index <= currentStep + 1;
-        
+
         return (
-          <div 
+          <div
             key={step.id}
-            style={{ 
-              display: 'flex', 
-              flexDirection: 'column', 
+            style={{
+              display: 'flex',
+              flexDirection: 'column',
               alignItems: 'center',
               zIndex: 2,
               position: 'relative',
@@ -538,10 +538,10 @@ const Setup: React.FC = () => {
             >
               {index + 1}
             </button>
-            
+
             <div style={{ textAlign: 'center' }}>
-              <div style={{ 
-                fontSize: '14px', 
+              <div style={{
+                fontSize: '14px',
                 fontWeight: isCurrent ? '600' : '400',
                 color: isCurrent ? '#51258f' : '#6c757d'
               }}>
@@ -555,8 +555,8 @@ const Setup: React.FC = () => {
   );
 
   return (
-    <div style={{ 
-      minHeight: '100vh', 
+    <div style={{
+      minHeight: '100vh',
       backgroundColor: '#f8f9fa',
       display: 'flex',
       alignItems: 'center',
@@ -573,15 +573,15 @@ const Setup: React.FC = () => {
         border: '1px solid #e9ecef'
       }}>
         <div style={{ textAlign: 'center', marginBottom: '1rem' }}>
-          <h1 style={{ 
-            fontSize: '2rem', 
-            fontWeight: 'bold', 
+          <h1 style={{
+            fontSize: '2rem',
+            fontWeight: 'bold',
             marginBottom: '0.5rem',
             color: '#2c3e50'
           }}>
             🚀 Erstkonfiguration
           </h1>
-          <p style={{ 
+          <p style={{
             color: '#6c757d',
             fontSize: '1.1rem',
             marginBottom: '2rem'
@@ -592,16 +592,16 @@ const Setup: React.FC = () => {
 
         {/* Aktueller Schritt Titel und Beschreibung */}
         <div style={{ textAlign: 'center', marginBottom: '1.5rem' }}>
-          <h2 style={{ 
-            fontSize: '1.5rem', 
-            fontWeight: 'bold', 
+          <h2 style={{
+            fontSize: '1.5rem',
+            fontWeight: 'bold',
             marginBottom: '0.5rem',
             color: '#2c3e50'
           }}>
             {steps[currentStep].title}
           </h2>
           {steps[currentStep].subtitle && (
-            <p style={{ 
+            <p style={{
               color: '#6c757d',
               fontSize: '1rem'
             }}>
@@ -633,9 +633,9 @@ const Setup: React.FC = () => {
         </div>
 
         {/* Navigations-Buttons */}
-        <div style={{ 
-          marginTop: '2rem', 
-          display: 'flex', 
+        <div style={{
+          marginTop: '2rem',
+          display: 'flex',
           justifyContent: 'space-between',
           alignItems: 'center'
         }}>
@@ -655,7 +655,7 @@ const Setup: React.FC = () => {
           >
             ← Zurück
           </button>
-          
+
           <button
             onClick={goToNextStep}
             disabled={loading}
@@ -677,10 +677,10 @@ const Setup: React.FC = () => {
 
         {/* Zusätzliche Informationen */}
         {currentStep === 2 && !loading && (
-          <div style={{ 
-            marginTop: '1.5rem', 
-            textAlign: 'center', 
-            color: '#6c757d', 
+          <div style={{
+            marginTop: '1.5rem',
+            textAlign: 'center',
+            color: '#6c757d',
             fontSize: '0.9rem',
             padding: '1rem',
             backgroundColor: '#f8f9fa',

frontend/src/services/authService.ts

@@ -1,5 +1,7 @@
-// frontend/src/services/authService.ts
+// frontend/src/services/authService.ts - UPDATED
 import { Employee } from '../models/Employee';
+import { ErrorService } from './errorService';
+
 const API_BASE_URL = import.meta.env.VITE_API_URL || '/api';
 
 export interface LoginRequest {
@@ -23,6 +25,23 @@ export interface AuthResponse {
 class AuthService {
   private token: string | null = null;
 
+  private async handleApiResponse<T>(response: Response): Promise<T> {
+    if (!response.ok) {
+      const errorData = await response.json().catch(() => ({}));
+      const validationErrors = ErrorService.extractValidationErrors(errorData);
+
+      if (validationErrors.length > 0) {
+        const error = new Error('Validation failed');
+        (error as any).validationErrors = validationErrors;
+        throw error;
+      }
+
+      throw new Error(errorData.error || errorData.message || 'Authentication failed');
+    }
+
+    return response.json();
+  }
+
   async login(credentials: LoginRequest): Promise<AuthResponse> {
     const response = await fetch(`${API_BASE_URL}/auth/login`, {
       method: 'POST',
@@ -30,12 +49,7 @@ class AuthService {
       body: JSON.stringify(credentials)
     });
 
-    if (!response.ok) {
-      const errorData = await response.json();
-      throw new Error(errorData.error || 'Login fehlgeschlagen');
-    }
-
-    const data: AuthResponse = await response.json();
+    const data = await this.handleApiResponse<AuthResponse>(response);
     this.token = data.token;
     localStorage.setItem('token', data.token);
     localStorage.setItem('employee', JSON.stringify(data.employee));
@@ -49,11 +63,7 @@ class AuthService {
       body: JSON.stringify(userData)
     });
 
-    if (!response.ok) {
-      const errorData = await response.json();
-      throw new Error(errorData.error || 'Registrierung fehlgeschlagen');
-    }
-
+    const data = await this.handleApiResponse<AuthResponse>(response);
     return this.login({
       email: userData.email,
       password: userData.password
@@ -95,6 +105,7 @@ class AuthService {
     this.token = null;
     localStorage.removeItem('token');
     localStorage.removeItem('user');
+    localStorage.removeItem('employee');
   }
 
   getToken(): string | null {

frontend/src/services/employeeService.ts

@@ -17,40 +17,40 @@ export class EmployeeService {
     if (!response.ok) {
       const errorData = await response.json().catch(() => ({}));
       const validationErrors = ErrorService.extractValidationErrors(errorData);
-      
+
       if (validationErrors.length > 0) {
         const error = new Error('Validation failed');
         (error as any).validationErrors = validationErrors;
         throw error;
       }
-      
-      throw new Error(errorData.error || `HTTP error! status: ${response.status}`);
+
+      throw new Error(errorData.error || errorData.message || `HTTP error! status: ${response.status}`);
     }
-    
+
     return response.json();
   }
 
   async getEmployees(includeInactive: boolean = false): Promise<Employee[]> {
     console.log('🔄 Fetching employees from API...');
-    
+
     const token = localStorage.getItem('token');
     console.log('🔑 Token exists:', !!token);
-    
+
     const response = await fetch(`${API_BASE_URL}/employees?includeInactive=${includeInactive}`, {
       headers: getAuthHeaders(),
     });
-    
+
     console.log('📡 Response status:', response.status);
-    
+
     if (!response.ok) {
       const errorText = await response.text();
       console.error('❌ API Error:', errorText);
       throw new Error('Failed to fetch employees');
     }
-    
+
     const employees = await response.json();
     console.log('✅ Employees received:', employees.length);
-    
+
     return employees;
   }
 
@@ -58,12 +58,8 @@ export class EmployeeService {
     const response = await fetch(`${API_BASE_URL}/employees/${id}`, {
       headers: getAuthHeaders(),
     });
-    
-    if (!response.ok) {
-      throw new Error('Failed to fetch employee');
-    }
-    
-    return response.json();
+
+    return this.handleApiResponse<Employee>(response);
   }
 
   async createEmployee(employee: CreateEmployeeRequest): Promise<Employee> {
@@ -72,7 +68,7 @@ export class EmployeeService {
       headers: getAuthHeaders(),
       body: JSON.stringify(employee),
     });
-    
+
     return this.handleApiResponse<Employee>(response);
   }
 
@@ -82,7 +78,7 @@ export class EmployeeService {
       headers: getAuthHeaders(),
       body: JSON.stringify(employee),
     });
-    
+
     return this.handleApiResponse<Employee>(response);
   }
 
@@ -91,7 +87,7 @@ export class EmployeeService {
       method: 'DELETE',
       headers: getAuthHeaders(),
     });
-    
+
     if (!response.ok) {
       const error = await response.json();
       throw new Error(error.error || 'Failed to delete employee');
@@ -102,12 +98,8 @@ export class EmployeeService {
     const response = await fetch(`${API_BASE_URL}/employees/${employeeId}/availabilities`, {
       headers: getAuthHeaders(),
     });
-    
-    if (!response.ok) {
-      throw new Error('Failed to fetch availabilities');
-    }
-    
-    return response.json();
+
+    return this.handleApiResponse<EmployeeAvailability[]>(response);
   }
 
   async updateAvailabilities(employeeId: string, data: { planId: string, availabilities: Omit<EmployeeAvailability, 'id' | 'employeeId'>[] }): Promise<EmployeeAvailability[]> {
@@ -117,26 +109,18 @@ export class EmployeeService {
       headers: getAuthHeaders(),
       body: JSON.stringify(data),
     });
-    
-    if (!response.ok) {
-      const error = await response.json();
-      throw new Error(error.error || 'Failed to update availabilities');
-    }
-    
-    return response.json();
+
+    return this.handleApiResponse<EmployeeAvailability[]>(response);
   }
 
-  async changePassword(id: string, data: { currentPassword: string, newPassword: string }): Promise<void> {
+  async changePassword(id: string, data: { currentPassword: string, newPassword: string, confirmPassword: string }): Promise<void> {
     const response = await fetch(`${API_BASE_URL}/employees/${id}/password`, {
       method: 'PUT',
       headers: getAuthHeaders(),
       body: JSON.stringify(data),
     });
-    
-    if (!response.ok) {
-      const error = await response.json();
-      throw new Error(error.error || 'Failed to change password');
-    }
+
+    return this.handleApiResponse<void>(response);
   }
 
   async updateLastLogin(employeeId: string): Promise<void> {

frontend/vite.config.ts

@@ -14,16 +14,16 @@ export default defineConfig(({ mode }) => {
     NODE_ENV: mode,
     ENABLE_PRO: env.ENABLE_PRO || 'false',
     VITE_APP_TITLE: env.APP_TITLE || 'Shift Planning App',
-    VITE_API_URL: isProduction ? '/api' : '/api',
+    VITE_API_URL: isProduction ? '/api' : 'http://localhost:3002/api',
   }
 
   return {
     plugins: [react()],
 
-    server: {
-      port: 3003,
+    server: isDevelopment ? undefined : {
+      port: 3002,
       host: true,
-      //open: isDevelopment,
+      open: true,
       proxy: {
         '/api': {
           target: 'http://localhost:3002',

package-lock.json

@@ -35,6 +35,7 @@
         "@types/jest": "^29.5.0",
         "@types/jsonwebtoken": "^9.0.2",
         "@types/uuid": "^9.0.2",
+        "cross-env": "10.1.0",
         "ts-node": "^10.9.0",
         "tsx": "^4.0.0",
         "typescript": "^5.0.0"
@@ -259,6 +260,7 @@
     "backend/node_modules/@types/node": {
       "version": "24.7.0",
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "undici-types": "~7.14.0"
       }
@@ -890,11 +892,6 @@
       "license": "MIT",
       "optional": true
     },
-    "backend/node_modules/isexe": {
-      "version": "2.0.0",
-      "license": "ISC",
-      "optional": true
-    },
     "backend/node_modules/jest-diff": {
       "version": "29.7.0",
       "dev": true,
@@ -1777,20 +1774,6 @@
       "dev": true,
       "license": "MIT"
     },
-    "backend/node_modules/which": {
-      "version": "2.0.2",
-      "license": "ISC",
-      "optional": true,
-      "dependencies": {
-        "isexe": "^2.0.0"
-      },
-      "bin": {
-        "node-which": "bin/node-which"
-      },
-      "engines": {
-        "node": ">= 8"
-      }
-    },
     "backend/node_modules/wide-align": {
       "version": "1.1.5",
       "license": "ISC",
@@ -1874,6 +1857,7 @@
       "version": "7.28.5",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@babel/code-frame": "^7.27.1",
         "@babel/generator": "^7.28.5",
@@ -2116,6 +2100,13 @@
         "node": ">=6.9.0"
       }
     },
+    "node_modules/@epic-web/invariant": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/@epic-web/invariant/-/invariant-1.0.0.tgz",
+      "integrity": "sha512-lrTPqgvfFQtR/eY/qkIzp98OGdNJu0m5ji3q/nJI8v3SXkRKEnWiOxMmbvcSoAIzv/cGiuvRy57k4suKQSAdwA==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@esbuild/win32-x64": {
       "version": "0.21.5",
       "cpu": [
@@ -2297,10 +2288,6 @@
         "win32"
       ]
     },
-    "node_modules/@schichtenplaner/premium": {
-      "resolved": "premium",
-      "link": true
-    },
     "node_modules/@sinclair/typebox": {
       "version": "0.34.41",
       "resolved": "https://registry.npmjs.org/@sinclair/typebox/-/typebox-0.34.41.tgz",
@@ -2321,7 +2308,6 @@
       "integrity": "sha512-hcFZIjW8yQz8O8//2WTIXylm5Xsgc+lW9ISLgUk1xGmptIJQRdlhVIXCpSyLrQaaRiyhQRaVg7l3BD9S216BHw==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "engines": {
         "node": ">=14.0.0"
       },
@@ -2565,7 +2551,6 @@
       "integrity": "sha512-Mw558oeA9fFbv65/y4mHtXDs9bPnFMZAL/jxdPFUpOHHIXX91mcgEHbS5Lahr+pwZFR8A7GQleRWeI6cGFC2UA==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@types/deep-eql": "*",
         "assertion-error": "^2.0.1"
@@ -2576,8 +2561,7 @@
       "resolved": "https://registry.npmjs.org/@types/deep-eql/-/deep-eql-4.0.2.tgz",
       "integrity": "sha512-c9h9dVVMigMPc4bwTvC5dxqtqJZwQPePsWjPlpSOnojbor6pGqdk541lfA7AqFQr5pB1BRdq0juY9db81BwyFw==",
       "dev": true,
-      "license": "MIT",
-      "peer": true
+      "license": "MIT"
     },
     "node_modules/@types/estree": {
       "version": "1.0.8",
@@ -2639,6 +2623,7 @@
       "version": "19.2.2",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "csstype": "^3.0.2"
       }
@@ -2719,7 +2704,6 @@
       "integrity": "sha512-Io0yyORnB6sikFlt8QW5K7slY4OjqNX9jmJQ02QDda8lyM6B5oNgVWoSoKPac8/kgnCUzuHQKrSLtu/uOqqrig==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@types/chai": "^5.2.2",
         "@vitest/spy": "3.2.4",
@@ -2737,7 +2721,6 @@
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