added vite dependency to the backend

.env.template

@@ -14,3 +14,14 @@ PORT=${PORT:-3002}
 # App Configuration
 APP_TITLE="Shift Planning App"
 ENABLE_PRO=${ENABLE_PRO:-false}
+
+# Trust Proxy Configuration
+TRUST_PROXY_ENABLED=false
+TRUSTED_PROXY_IPS=  # Your load balancer/reverse proxy IPs
+TRUSTED_PROXY_HEADER=x-forwarded-for
+
+# Rate Limiting Configuration  
+RATE_LIMIT_WINDOW_MS=900000
+RATE_LIMIT_MAX_REQUESTS=100
+RATE_LIMIT_SKIP_PATHS=/api/health,/api/status
+RATE_LIMIT_WHITELIST=127.0.0.1,::1

backend/package.json

@@ -4,6 +4,7 @@
   "type": "module",
   "scripts": {
     "dev": "npm run build && npx tsx src/server.ts",
+    "dev:single": "cross-env NODE_ENV=development TRUST_PROXY_ENABLED=false npx tsx src/server.ts",
     "build": "tsc",
     "start": "node dist/server.js",
     "prestart": "npm run build",
@@ -14,6 +15,8 @@
   },
   "dependencies": {
     "@types/bcrypt": "^6.0.0",
+    "@types/node": "24.9.2",
+    "vite":"7.1.12",
     "bcrypt": "^6.0.0",
     "bcryptjs": "^2.4.3",
     "express": "^4.18.2",
@@ -32,6 +35,7 @@
     "@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/authController.ts

@@ -64,7 +64,7 @@ export const login = async (req: Request, res: Response) => {
       return res.status(400).json({ error: 'E-Mail und Passwort sind erforderlich' });
     }
 
-    // UPDATED: Get user from database with role from employee_roles table
+    // Get user from database with role from employee_roles table
     const user = await db.get<any>(
       `SELECT 
         e.id, e.email, e.password, e.firstname, e.lastname, 
@@ -155,7 +155,7 @@ export const getCurrentUser = async (req: Request, res: Response) => {
       return res.status(401).json({ error: 'Nicht authentifiziert' });
     }
 
-    // UPDATED: Get user with role from employee_roles table
+    // Get user with role from employee_roles table
     const user = await db.get<any>(
       `SELECT 
         e.id, e.email, e.firstname, e.lastname,

backend/src/middleware/auth.ts

@@ -52,3 +52,35 @@ export const requireRole = (roles: string[]) => {
     next();
   };
 };
+
+export const getClientIP = (req: Request): string => {
+  const trustedHeader = process.env.TRUSTED_PROXY_HEADER || 'x-forwarded-for';
+  const forwarded = req.headers[trustedHeader];
+  const realIp = req.headers['x-real-ip'];
+  
+  if (forwarded) {
+    if (Array.isArray(forwarded)) {
+      return forwarded[0].split(',')[0].trim();
+    } else if (typeof forwarded === 'string') {
+      return forwarded.split(',')[0].trim();
+    }
+  }
+  
+  if (realIp) {
+    return realIp.toString();
+  }
+  
+  return req.socket.remoteAddress || req.ip || 'unknown';
+};
+
+export const ipSecurityCheck = (req: AuthRequest, res: Response, next: NextFunction): void => {
+  const clientIP = getClientIP(req);
+  
+  // Log suspicious activity
+  const suspiciousPaths = ['/api/auth/login', '/api/auth/register'];
+  if (suspiciousPaths.includes(req.path)) {
+    console.log(`🔐 Auth attempt from IP: ${clientIP}, Path: ${req.path}`);
+  }
+  
+  next();
+}

backend/src/middleware/rateLimit.ts

@@ -1,6 +1,46 @@
 import rateLimit from 'express-rate-limit';
 import { Request } from 'express';
 
+// Secure IP extraction that works with proxy settings
+const getClientIP = (req: Request): string => {
+  // Read from environment which header to trust
+  const trustedHeader = process.env.TRUSTED_PROXY_HEADER || 'x-forwarded-for';
+  
+  const forwarded = req.headers[trustedHeader];
+  const realIp = req.headers['x-real-ip'];
+  const cfConnectingIp = req.headers['cf-connecting-ip']; // Cloudflare
+  
+  // If we have a forwarded header and trust proxy is configured
+  if (forwarded) {
+    if (Array.isArray(forwarded)) {
+      const firstIP = forwarded[0].split(',')[0].trim();
+      console.log(`🔍 Extracted IP from ${trustedHeader}: ${firstIP} (from: ${forwarded[0]})`);
+      return firstIP;
+    } else if (typeof forwarded === 'string') {
+      const firstIP = forwarded.split(',')[0].trim();
+      console.log(`🔍 Extracted IP from ${trustedHeader}: ${firstIP} (from: ${forwarded})`);
+      return firstIP;
+    }
+  }
+  
+  // Cloudflare support
+  if (cfConnectingIp) {
+    console.log(`🔍 Using Cloudflare IP: ${cfConnectingIp}`);
+    return cfConnectingIp.toString();
+  }
+  
+  // Fallback to x-real-ip
+  if (realIp) {
+    console.log(`🔍 Using x-real-ip: ${realIp}`);
+    return realIp.toString();
+  }
+  
+  // Final fallback to connection remote address
+  const remoteAddress = req.socket.remoteAddress || req.ip || 'unknown';
+  console.log(`🔍 Using remote address: ${remoteAddress}`);
+  return remoteAddress;
+};
+
 // Helper to check if request should be limited
 const shouldSkipLimit = (req: Request): boolean => {
   const skipPaths = [
@@ -14,35 +54,92 @@ const shouldSkipLimit = (req: Request): boolean => {
     return true;
   }
   
+  // Skip for whitelisted IPs from environment
+  const whitelist = process.env.RATE_LIMIT_WHITELIST?.split(',') || [];
+  const clientIP = getClientIP(req);
+  if (whitelist.includes(clientIP)) {
+    console.log(`✅ IP whitelisted: ${clientIP}`);
+    return true;
+  }
+  
   return skipPaths.includes(req.path);
 };
 
+// Environment-based configuration
+const getRateLimitConfig = () => {
+  const isProduction = process.env.NODE_ENV === 'production';
+  
+  return {
+    windowMs: parseInt(process.env.RATE_LIMIT_WINDOW_MS || '900000'), // 15 minutes default
+    max: isProduction 
+      ? parseInt(process.env.RATE_LIMIT_MAX_REQUESTS || '100')  // Stricter in production
+      : parseInt(process.env.RATE_LIMIT_MAX_REQUESTS || '1000'), // More lenient in development
+    
+    // Development-specific relaxations
+    skip: (req: Request) => {
+      // Skip all GET requests in development for easier testing
+      if (!isProduction && req.method === 'GET') {
+        return true;
+      }
+      
+      return shouldSkipLimit(req);
+    }
+  };
+};
+
 // Main API limiter - nur für POST/PUT/DELETE
 export const apiLimiter = rateLimit({
-  windowMs: 15 * 60 * 1000, // 15 minutes
+  ...getRateLimitConfig(),
-  max: 200, // 200 non-GET requests per 15 minutes
   message: { 
     error: 'Zu viele Anfragen, bitte verlangsamen Sie Ihre Aktionen' 
   },
   standardHeaders: true,
   legacyHeaders: false,
-  skip: (req) => {
+  keyGenerator: (req) => getClientIP(req),
-    // ✅ Skip für GET requests (Data Fetching)
+  handler: (req, res) => {
-    if (req.method === 'GET') return true;
+    const clientIP = getClientIP(req);
+    console.warn(`🚨 Rate limit exceeded for IP: ${clientIP}, Path: ${req.path}, Method: ${req.method}`);
     
-    // ✅ Skip für Health/Status Checks
+    res.status(429).json({ 
-    return shouldSkipLimit(req);
+      error: 'Zu viele Anfragen',
+      message: 'Bitte versuchen Sie es später erneut',
+      retryAfter: '15 Minuten',
+      clientIP: process.env.NODE_ENV === 'development' ? clientIP : undefined // Only expose IP in dev
+    });
   }
 });
 
 // Strict limiter for auth endpoints
 export const authLimiter = rateLimit({
   windowMs: 15 * 60 * 1000,
-  max: 5,
+  max: parseInt(process.env.AUTH_RATE_LIMIT_MAX_REQUESTS || '5'),
   message: { 
     error: 'Zu viele Login-Versuche, bitte versuchen Sie es später erneut' 
   },
   standardHeaders: true,
   legacyHeaders: false,
   skipSuccessfulRequests: true,
+  keyGenerator: (req) => getClientIP(req),
+  handler: (req, res) => {
+    const clientIP = getClientIP(req);
+    console.warn(`🚨 Auth rate limit exceeded for IP: ${clientIP}`);
+    
+    res.status(429).json({ 
+      error: 'Zu viele Login-Versuche',
+      message: 'Aus Sicherheitsgründen wurde Ihr Konto temporär gesperrt',
+      retryAfter: '15 Minuten'
+    });
+  }
+});
+
+// Separate limiter for expensive endpoints
+export const expensiveEndpointLimiter = rateLimit({
+  windowMs: 15 * 60 * 1000,
+  max: parseInt(process.env.EXPENSIVE_ENDPOINT_LIMIT || '10'),
+  message: {
+    error: 'Zu viele Anfragen für diese Ressource'
+  },
+  standardHeaders: true,
+  legacyHeaders: false,
+  keyGenerator: (req) => getClientIP(req)
 });

backend/src/models/helpers/employeeHelpers.ts

@@ -18,7 +18,7 @@ function generateEmail(firstname: string, lastname: string): string {
   return `${cleanFirstname}.${cleanLastname}@sp.de`;
 }
 
-// UPDATED: Validation for new employee model with employee types
+// Validation for new employee model with employee types
 export function validateEmployeeData(employee: CreateEmployeeRequest): string[] {
   const errors: string[] = [];
 
@@ -71,7 +71,7 @@ export function generateEmployeeEmail(firstname: string, lastname: string): stri
   return generateEmail(firstname, lastname);
 }
 
-// UPDATED: Business logic helpers for new employee types
+// Business logic helpers for new employee types
 export const isManager = (employee: Employee): boolean =>
   employee.employeeType === 'manager';
 
@@ -90,7 +90,7 @@ export const isInternal = (employee: Employee): boolean =>
 export const isExternal = (employee: Employee): boolean =>
   employee.employeeType === 'guest';
 
-// UPDATED: Trainee logic - now based on isTrainee field for personell type
+// Trainee logic - now based on isTrainee field for personell type
 export const isTrainee = (employee: Employee): boolean =>
   employee.employeeType === 'personell' && employee.isTrainee;
 
@@ -107,7 +107,7 @@ export const isMaintenance = (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
+// Work alone permission - managers and experienced personell can work alone
 export const canEmployeeWorkAlone = (employee: Employee): boolean =>
   employee.canWorkAlone && (isManager(employee) || isExperienced(employee));
 
@@ -134,7 +134,7 @@ export function validateAvailabilityData(availability: Omit<EmployeeAvailability
   return errors;
 }
 
-// UPDATED: Helper to get employee type category
+// Helper to get employee type category
 export const getEmployeeCategory = (employee: Employee): 'internal' | 'external' => {
   return isInternal(employee) ? 'internal' : 'external';
 };

backend/src/models/helpers/shiftPlanHelpers.ts

@@ -78,7 +78,7 @@ export function calculateTotalRequiredEmployees(plan: ShiftPlan): number {
   return plan.shifts.reduce((total, shift) => total + shift.requiredEmployees, 0);
 }
 
-// UPDATED: Get scheduled shift by date and time slot
+// Get scheduled shift by date and time slot
 export function getScheduledShiftByDateAndTime(
   plan: ShiftPlan, 
   date: string, 

backend/src/models/scheduling.ts

@@ -2,7 +2,7 @@
 import { Employee } from './Employee.js';
 import { ShiftPlan } from './ShiftPlan.js';
 
-// Updated Availability interface to match new schema
+// Availability interface
 export interface Availability {
   id: string;
   employeeId: string;

backend/src/scripts/applyMigration.ts

@@ -53,7 +53,7 @@ async function markMigrationAsApplied(migrationName: string) {
   );
 }
 
-// UPDATED: Function to handle schema changes for the new employee type system
+// Function to handle schema changes for the new employee type system
 async function applySchemaUpdates() {
   console.log('🔄 Applying schema updates for new employee type system...');
   
@@ -80,7 +80,7 @@ async function applySchemaUpdates() {
       PRAGMA table_info(employees)
     `);
     
-    // FIXED: Check for employee_type column (not roles column)
+    // Check for employee_type column (not roles column)
     const hasEmployeeType = employeesTableInfo.some((col: TableColumnInfo) => col.name === 'employee_type');
     const hasIsTrainee = employeesTableInfo.some((col: TableColumnInfo) => col.name === 'is_trainee');
     

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';
@@ -13,7 +14,12 @@ import shiftPlanRoutes from './routes/shiftPlans.js';
 import setupRoutes from './routes/setup.js';
 import scheduledShifts from './routes/scheduledShifts.js';
 import schedulingRoutes from './routes/scheduling.js';
-import { authLimiter, apiLimiter } from './middleware/rateLimit.js';
+import { 
+  apiLimiter, 
+  authLimiter, 
+  expensiveEndpointLimiter
+} from './middleware/rateLimit.js';
+import { ipSecurityCheck as authIpCheck } from './middleware/auth.js';
 
 const __filename = fileURLToPath(import.meta.url);
 const __dirname = path.dirname(__filename);
@@ -22,7 +28,50 @@ const app = express();
 const PORT = 3002;
 const isDevelopment = process.env.NODE_ENV === 'development';
 
-app.set('trust proxy', true);
+app.use(authIpCheck);
+
+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 staticConfig = {
+    maxAge: '1y',
+    etag: false,
+    immutable: true,
+    index: false
+  };
+
+  // Serve frontend build
+  const frontendPath = '/app/frontend-build';
+  if (fs.existsSync(frontendPath)) {
+    console.log('✅ Serving frontend from:', frontendPath);
+    app.use(express.static(frontendPath, staticConfig));
+  }
+
+  // Serve premium assets if available
+  const premiumPath = '/app/premium-dist';
+  if (fs.existsSync(premiumPath)) {
+    console.log('✅ Serving premium assets from:', premiumPath);
+    app.use('/premium-assets', express.static(premiumPath, staticConfig));
+  }
+};
 
 // Security configuration
 if (process.env.NODE_ENV === 'production') {
@@ -34,6 +83,48 @@ if (process.env.NODE_ENV === 'production') {
   }
 }
 
+const configureTrustProxy = (): string | string[] | boolean | number => {
+  const trustedProxyIps = process.env.TRUSTED_PROXY_IPS;
+  const trustProxyEnabled = process.env.TRUST_PROXY_ENABLED !== 'false'; // Default true for production
+
+  // If explicitly disabled
+  if (!trustProxyEnabled) {
+    console.log('🔒 Trust proxy: Disabled');
+    return false;
+  }
+
+  // If specific IPs are provided via environment variable
+  if (trustedProxyIps) {
+    console.log('🔒 Trust proxy: Using configured IPs:', trustedProxyIps);
+    
+    // Handle comma-separated list of IPs/CIDR ranges
+    if (trustedProxyIps.includes(',')) {
+      return trustedProxyIps.split(',').map(ip => ip.trim());
+    }
+    
+    // Handle single IP/CIDR
+    return trustedProxyIps.trim();
+  }
+
+  // Default behavior based on environment
+  if (process.env.NODE_ENV === 'production') {
+    console.log('🔒 Trust proxy: Using production defaults (private networks)');
+    return [
+      'loopback', 
+      'linklocal', 
+      'uniquelocal',
+      '10.0.0.0/8',
+      '172.16.0.0/12', 
+      '192.168.0.0/16'
+    ];
+  } else {
+    console.log('🔒 Trust proxy: Development mode (disabled)');
+    return false;
+  }
+};
+
+app.set('trust proxy', configureTrustProxy());
+
 // Security headers
 app.use(helmet({
   contentSecurityPolicy: {
@@ -66,9 +157,12 @@ app.use(express.json());
 
 // Rate limiting - weniger restriktiv in Development
 if (process.env.NODE_ENV === 'production') {
+  console.log('🔒 Applying production rate limiting');
   app.use('/api/', apiLimiter);
 } else {
-  console.log('🔧 Development: Rate limiting relaxed');
+  console.log('🔧 Development: Relaxed rate limiting applied');
+  // In development, you might want to be more permissive
+  app.use('/api/', apiLimiter);
 }
 
 // API Routes
@@ -77,7 +171,7 @@ app.use('/api/auth', authLimiter, authRoutes);
 app.use('/api/employees', employeeRoutes);
 app.use('/api/shift-plans', shiftPlanRoutes);
 app.use('/api/scheduled-shifts', scheduledShifts);
-app.use('/api/scheduling', schedulingRoutes);
+app.use('/api/scheduling', expensiveEndpointLimiter, schedulingRoutes);
 
 // Health route
 app.get('/api/health', (req: express.Request, res: express.Response) => {
@@ -118,6 +212,7 @@ const findFrontendBuildPath = (): string | null => {
 };
 
 const frontendBuildPath = findFrontendBuildPath();
+configureStaticFiles();
 
 if (frontendBuildPath) {
   app.use(express.static(frontendBuildPath));
@@ -130,12 +225,25 @@ if (frontendBuildPath) {
 }
 
 // Root route
-app.get('/', (req, res) => {
+app.get('/', async (req, res) => {
-  if (!frontendBuildPath) {
+  // In development with Vite middleware
-    if (isDevelopment) {
+  if (vite) {
-      return res.redirect('http://localhost:3003');
+    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');
@@ -143,20 +251,26 @@ app.get('/', (req, res) => {
 });
 
 // Client-side routing fallback
-app.get('*', (req, res) => {
+app.get('*', (req, res, next) => {
+  // Skip API routes
   if (req.path.startsWith('/api/')) {
-    return res.status(404).json({ error: 'API endpoint not found' });
+    return next();
   }
 
-  if (!frontendBuildPath) {
+  // Skip file extensions (assets)
-    if (isDevelopment) {
+  if (req.path.match(/\.[a-z0-9]+$/i)) {
-      return res.redirect(`http://localhost:3003${req.path}`);
+    return next();
-    }
-    return res.status(500).json({ error: 'Frontend application not available' });
   }
 
-  const indexPath = path.join(frontendBuildPath, 'index.html');
+  // Serve React app for all other routes
+  const frontendPath = '/app/frontend-build';
+  const indexPath = path.join(frontendPath, 'index.html');
+  
+  if (fs.existsSync(indexPath)) {
     res.sendFile(indexPath);
+  } else {
+    res.status(404).send('Frontend not available');
+  }
 });
 
 // Error handling

frontend/package.json

@@ -28,7 +28,7 @@
     "framer-motion": "12.23.24"
   },
   "scripts": {
-    "dev": "vite",
+    "dev": "vite dev",
     "build": "tsc && vite build",
     "preview": "vite preview"
   }

frontend/src/contexts/AuthContext.tsx

@@ -49,12 +49,21 @@ export const AuthProvider: React.FC<AuthProviderProps> = ({ children }) => {
   const checkSetupStatus = async (): Promise<void> => {
     try {
       console.log('🔍 Checking setup status...');
-      const response = await fetch(`${API_BASE_URL}/setup/status`);
+      const startTime = Date.now();
+      
+      const response = await fetch(`${API_BASE_URL}/setup/status`, {
+        signal: AbortSignal.timeout(5000)
+      });
+      
+      console.log(`✅ Setup status response received in ${Date.now() - startTime}ms`);
+      
       if (!response.ok) {
+        console.error('❌ Setup status response not OK:', response.status, response.statusText);
         throw new Error('Setup status check failed');
       }
+      
       const data = await response.json();
-      console.log('✅ Setup status response:', data);
+      console.log('✅ Setup status response data:', data);
       setNeedsSetup(data.needsSetup === true);
     } catch (error) {
       console.error('❌ Error checking setup status:', error);
@@ -95,7 +104,6 @@ export const AuthProvider: React.FC<AuthProviderProps> = ({ children }) => {
     }
   };
 
-  // Add the updateUser function
   const updateUser = (userData: Employee) => {
     console.log('🔄 Updating user in auth context:', userData);
     setUser(userData);
@@ -161,6 +169,8 @@ export const AuthProvider: React.FC<AuthProviderProps> = ({ children }) => {
     initializeAuth();
   }, []);
 
+  const calculatedNeedsSetup = needsSetup === null ? true : needsSetup;
+
   const value: AuthContextType = {
     user,
     login,
@@ -168,7 +178,7 @@ export const AuthProvider: React.FC<AuthProviderProps> = ({ children }) => {
     hasRole,
     loading,
     refreshUser,
-    needsSetup: needsSetup === null ? true : needsSetup,
+    needsSetup: calculatedNeedsSetup,
     checkSetupStatus,
     updateUser,
   };

frontend/src/models/defaults/employeeDefaults.ts

@@ -102,7 +102,7 @@ export const AVAILABILITY_PREFERENCES = {
 } as const;
 
 // Default availability for new employees (all shifts unavailable as level 3)
-// UPDATED: Now uses shiftId instead of timeSlotId + dayOfWeek
+// Now uses shiftId instead of timeSlotId + dayOfWeek
 export function createDefaultAvailabilities(employeeId: string, planId: string, shiftIds: string[]): Omit<EmployeeAvailability, 'id'>[] {
   const availabilities: Omit<EmployeeAvailability, 'id'>[] = [];
   

frontend/src/models/helpers/employeeHelpers.ts

@@ -18,7 +18,7 @@ function generateEmail(firstname: string, lastname: string): string {
   return `${cleanFirstname}.${cleanLastname}@sp.de`;
 }
 
-// UPDATED: Validation for new employee model with employee types
+// Validation for new employee model with employee types
 export function validateEmployeeData(employee: CreateEmployeeRequest): string[] {
   const errors: string[] = [];
 
@@ -71,7 +71,7 @@ export function generateEmployeeEmail(firstname: string, lastname: string): stri
   return generateEmail(firstname, lastname);
 }
 
-// UPDATED: Business logic helpers for new employee types
+// Business logic helpers for new employee types
 export const isManager = (employee: Employee): boolean =>
   employee.employeeType === 'manager';
 
@@ -90,7 +90,7 @@ export const isInternal = (employee: Employee): boolean =>
 export const isExternal = (employee: Employee): boolean =>
   employee.employeeType === 'guest';
 
-// UPDATED: Trainee logic - now based on isTrainee field for personell type
+// Trainee logic - now based on isTrainee field for personell type
 export const isTrainee = (employee: Employee): boolean =>
   employee.employeeType === 'personell' && employee.isTrainee;
 
@@ -107,7 +107,7 @@ export const isMaintenance = (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
+// Work alone permission - managers and experienced personell can work alone
 export const canEmployeeWorkAlone = (employee: Employee): boolean =>
   employee.canWorkAlone && (isManager(employee) || isExperienced(employee));
 
@@ -134,7 +134,7 @@ export function validateAvailabilityData(availability: Omit<EmployeeAvailability
   return errors;
 }
 
-// UPDATED: Helper to get employee type category
+// Helper to get employee type category
 export const getEmployeeCategory = (employee: Employee): 'internal' | 'external' => {
   return isInternal(employee) ? 'internal' : 'external';
 };

frontend/src/models/helpers/shiftPlanHelpers.ts

@@ -78,7 +78,7 @@ export function calculateTotalRequiredEmployees(plan: ShiftPlan): number {
   return plan.shifts.reduce((total, shift) => total + shift.requiredEmployees, 0);
 }
 
-// UPDATED: Get scheduled shift by date and time slot
+// Get scheduled shift by date and time slot
 export function getScheduledShiftByDateAndTime(
   plan: ShiftPlan, 
   date: string, 

frontend/src/models/scheduling.ts

@@ -2,7 +2,7 @@
 import { Employee } from './Employee.js';
 import { ShiftPlan } from './ShiftPlan.js';
 
-// Updated Availability interface to match new schema
+// Availability interface to match
 export interface Availability {
   id: string;
   employeeId: string;

frontend/src/pages/Auth/Login.tsx

@@ -1,4 +1,4 @@
-// frontend/src/pages/Auth/Login.tsx - UPDATED PASSWORD SECTION
+// frontend/src/pages/Auth/Login.tsx
 import React, { useState, useEffect, useRef } from 'react';
 import { useNavigate } from 'react-router-dom';
 import { useAuth } from '../../contexts/AuthContext';

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

@@ -15,7 +15,7 @@ interface EmployeeListProps {
 type SortField = 'name' | 'employeeType' | 'canWorkAlone' | 'role' | 'lastLogin';
 type SortDirection = 'asc' | 'desc';
 
-// FIXED: Use the actual employee types from the Employee interface
+// Use the actual employee types from the Employee interface
 type EmployeeType = 'manager' | 'personell' | 'apprentice' | 'guest';
 
 const EmployeeList: React.FC<EmployeeListProps> = ({
@@ -130,7 +130,7 @@ const EmployeeList: React.FC<EmployeeListProps> = ({
   const getEmployeeTypeBadge = (type: EmployeeType, isTrainee: boolean = false) => {
     const config = EMPLOYEE_TYPE_CONFIG[type];
 
-    // FIXED: Updated color mapping for actual employee types
+    // Color mapping for actual employee types
     const bgColor =
       type === 'manager'
         ? '#fadbd8' // light red
@@ -326,7 +326,7 @@ const EmployeeList: React.FC<EmployeeListProps> = ({
         </div>
 
         {sortedEmployees.map(employee => {
-          // FIXED: Type assertion to ensure type safety
+          // Type assertion to ensure type safety
           const employeeType = getEmployeeTypeBadge(employee.employeeType as EmployeeType, employee.isTrainee);
           const independence = getIndependenceBadge(employee.canWorkAlone);
           const roleInfo = getRoleBadge(employee.roles);

frontend/src/pages/ShiftPlans/ShiftPlanView.tsx

@@ -1,4 +1,4 @@
-// frontend/src/pages/ShiftPlans/ShiftPlanView.tsx - UPDATED
+// frontend/src/pages/ShiftPlans/ShiftPlanView.tsx
 import React, { useState, useEffect } from 'react';
 import { useParams, useNavigate } from 'react-router-dom';
 import { useAuth } from '../../contexts/AuthContext';
@@ -1118,7 +1118,7 @@ const ShiftPlanView: React.FC = () => {
         </div>
       )}
 
-      {/* Assignment Preview Modal - FIXED CONDITION */}
+      {/* Assignment Preview Modal */}
       {(showAssignmentPreview || assignmentResult) && (
         <div style={{
           position: 'fixed',

frontend/src/services/apiClient.ts

@@ -0,0 +1,130 @@
+import { ValidationError, ErrorService } from './errorService';
+
+export class ApiError extends Error {
+  public validationErrors: ValidationError[];
+  public statusCode: number;
+  public originalError?: any;
+
+  constructor(message: string, validationErrors: ValidationError[] = [], statusCode: number = 0, originalError?: any) {
+    super(message);
+    this.name = 'ApiError';
+    this.validationErrors = validationErrors;
+    this.statusCode = statusCode;
+    this.originalError = originalError;
+  }
+}
+
+export class ApiClient {
+  private baseURL: string;
+
+  constructor() {
+    this.baseURL = import.meta.env.VITE_API_URL || '/api';
+  }
+
+  private getAuthHeaders(): HeadersInit {
+    const token = localStorage.getItem('token');
+    return token ? { 'Authorization': `Bearer ${token}` } : {};
+  }
+
+  private async handleApiResponse<T>(response: Response): Promise<T> {
+    if (!response.ok) {
+      let errorData;
+      
+      try {
+        // Try to parse error response as JSON
+        const responseText = await response.text();
+        errorData = responseText ? JSON.parse(responseText) : {};
+      } catch {
+        // If not JSON, create a generic error object
+        errorData = { error: `HTTP ${response.status}: ${response.statusText}` };
+      }
+      
+      // Extract validation errors using your existing ErrorService
+      const validationErrors = ErrorService.extractValidationErrors(errorData);
+
+      if (validationErrors.length > 0) {
+        // Throw error with validationErrors property for useBackendValidation hook
+        throw new ApiError(
+          errorData.error || 'Validation failed',
+          validationErrors,
+          response.status,
+          errorData
+        );
+      }
+
+      // Throw regular error for non-validation errors
+      throw new ApiError(
+        errorData.error || errorData.message || `HTTP error! status: ${response.status}`,
+        [],
+        response.status,
+        errorData
+      );
+    }
+
+    // For successful responses, try to parse as JSON
+    try {
+      const responseText = await response.text();
+      return responseText ? JSON.parse(responseText) : {} as T;
+    } catch (error) {
+      // If response is not JSON but request succeeded (e.g., 204 No Content)
+      return {} as T;
+    }
+  }
+
+  async request<T>(endpoint: string, options: RequestInit = {}): Promise<T> {
+    const url = `${this.baseURL}${endpoint}`;
+    
+    const config: RequestInit = {
+      headers: {
+        'Content-Type': 'application/json',
+        ...this.getAuthHeaders(),
+        ...options.headers,
+      },
+      ...options,
+    };
+
+    try {
+      const response = await fetch(url, config);
+      return await this.handleApiResponse<T>(response);
+    } catch (error) {
+      // Re-throw the error to be caught by useBackendValidation
+      if (error instanceof ApiError) {
+        throw error;
+      }
+      
+      // Wrap non-ApiError errors
+      throw new ApiError(
+        error instanceof Error ? error.message : 'Unknown error occurred',
+        [],
+        0,
+        error
+      );
+    }
+  }
+
+  // Standardized HTTP methods
+  get = <T>(endpoint: string) => this.request<T>(endpoint);
+  
+  post = <T>(endpoint: string, data?: any) => 
+    this.request<T>(endpoint, { 
+      method: 'POST', 
+      body: data ? JSON.stringify(data) : undefined 
+    });
+  
+  put = <T>(endpoint: string, data?: any) => 
+    this.request<T>(endpoint, { 
+      method: 'PUT', 
+      body: data ? JSON.stringify(data) : undefined 
+    });
+  
+  patch = <T>(endpoint: string, data?: any) => 
+    this.request<T>(endpoint, { 
+      method: 'PATCH', 
+      body: data ? JSON.stringify(data) : undefined 
+    });
+  
+  delete = <T>(endpoint: string) => 
+    this.request<T>(endpoint, { method: 'DELETE' });
+}
+
+export const apiClient = new ApiClient();

frontend/src/services/authService.ts

@@ -1,8 +1,5 @@
-// frontend/src/services/authService.ts - UPDATED
 import { Employee } from '../models/Employee';
-import { ErrorService } from './errorService';
+import { apiClient } from './apiClient';
-
-const API_BASE_URL = import.meta.env.VITE_API_URL || '/api';
 
 export interface LoginRequest {
   email: string;
@@ -25,31 +22,8 @@ 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`, {
+    const data = await apiClient.post<AuthResponse>('/auth/login', credentials);
-      method: 'POST',
-      headers: { 'Content-Type': 'application/json' },
-      body: JSON.stringify(credentials)
-    });
-
-    const data = await this.handleApiResponse<AuthResponse>(response);
     this.token = data.token;
     localStorage.setItem('token', data.token);
     localStorage.setItem('employee', JSON.stringify(data.employee));
@@ -57,13 +31,7 @@ class AuthService {
   }
 
   async register(userData: RegisterRequest): Promise<AuthResponse> {
-    const response = await fetch(`${API_BASE_URL}/employees`, {
+    await apiClient.post('/employees', userData);
-      method: 'POST',
-      headers: { 'Content-Type': 'application/json' },
-      body: JSON.stringify(userData)
-    });
-
-    const data = await this.handleApiResponse<AuthResponse>(response);
     return this.login({
       email: userData.email,
       password: userData.password
@@ -77,29 +45,17 @@ class AuthService {
 
   async fetchCurrentEmployee(): Promise<Employee | null> {
     const token = this.getToken();
-    if (!token) {
+    if (!token) return null;
-      return null;
-    }
 
     try {
-      const response = await fetch(`${API_BASE_URL}/auth/me`, {
+      const data = await apiClient.get<{ user: Employee }>('/auth/me');
-        headers: {
+      localStorage.setItem('user', JSON.stringify(data.user));
-          'Authorization': `Bearer ${token}`
+      return data.user;
-        }
-      });
-
-      if (response.ok) {
-        const data = await response.json();
-        const user = data.user;
-        localStorage.setItem('user', JSON.stringify(user));
-        return user;
-      }
     } catch (error) {
       console.error('Error fetching current user:', error);
-    }
-
       return null;
     }
+  }
 
   logout(): void {
     this.token = null;

frontend/src/services/employeeService.ts

@@ -1,138 +1,58 @@
-// frontend/src/services/employeeService.ts
 import { Employee, CreateEmployeeRequest, UpdateEmployeeRequest, EmployeeAvailability } from '../models/Employee';
-import { ErrorService, ValidationError } from './errorService';
+import { apiClient } from './apiClient';
-
-const API_BASE_URL = '/api';
-
-const getAuthHeaders = () => {
-  const token = localStorage.getItem('token');
-  return {
-    'Content-Type': 'application/json',
-    'Authorization': `Bearer ${token}`
-  };
-};
 
 export class EmployeeService {
-  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 || `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');
+    try {
-    console.log('🔑 Token exists:', !!token);
+      const employees = await apiClient.get<Employee[]>(`/employees?includeInactive=${includeInactive}`);
-
-    const response = await fetch(`${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;
+    } catch (error) {
+      console.error('❌ Error fetching employees:', error);
+      throw error; // Let useBackendValidation handle this
+    }
   }
 
   async getEmployee(id: string): Promise<Employee> {
-    const response = await fetch(`${API_BASE_URL}/employees/${id}`, {
+    return apiClient.get<Employee>(`/employees/${id}`);
-      headers: getAuthHeaders(),
-    });
-
-    return this.handleApiResponse<Employee>(response);
   }
 
   async createEmployee(employee: CreateEmployeeRequest): Promise<Employee> {
-    const response = await fetch(`${API_BASE_URL}/employees`, {
+    return apiClient.post<Employee>('/employees', employee);
-      method: 'POST',
-      headers: getAuthHeaders(),
-      body: JSON.stringify(employee),
-    });
-
-    return this.handleApiResponse<Employee>(response);
   }
 
   async updateEmployee(id: string, employee: UpdateEmployeeRequest): Promise<Employee> {
-    const response = await fetch(`${API_BASE_URL}/employees/${id}`, {
+    return apiClient.put<Employee>(`/employees/${id}`, employee);
-      method: 'PUT',
-      headers: getAuthHeaders(),
-      body: JSON.stringify(employee),
-    });
-
-    return this.handleApiResponse<Employee>(response);
   }
 
   async deleteEmployee(id: string): Promise<void> {
-    const response = await fetch(`${API_BASE_URL}/employees/${id}`, {
+    await apiClient.delete(`/employees/${id}`);
-      method: 'DELETE',
-      headers: getAuthHeaders(),
-    });
-
-    if (!response.ok) {
-      const error = await response.json();
-      throw new Error(error.error || 'Failed to delete employee');
-    }
   }
 
   async getAvailabilities(employeeId: string): Promise<EmployeeAvailability[]> {
-    const response = await fetch(`${API_BASE_URL}/employees/${employeeId}/availabilities`, {
+    return apiClient.get<EmployeeAvailability[]>(`/employees/${employeeId}/availabilities`);
-      headers: getAuthHeaders(),
-    });
-
-    return this.handleApiResponse<EmployeeAvailability[]>(response);
   }
 
-  async updateAvailabilities(employeeId: string, data: { planId: string, availabilities: Omit<EmployeeAvailability, 'id' | 'employeeId'>[] }): Promise<EmployeeAvailability[]> {
+  async updateAvailabilities(
+    employeeId: string, 
+    data: { planId: string, availabilities: Omit<EmployeeAvailability, 'id' | 'employeeId'>[] }
+  ): Promise<EmployeeAvailability[]> {
     console.log('🔄 Updating availabilities for employee:', employeeId);
-    const response = await fetch(`${API_BASE_URL}/employees/${employeeId}/availabilities`, {
+    return apiClient.put<EmployeeAvailability[]>(`/employees/${employeeId}/availabilities`, data);
-      method: 'PUT',
-      headers: getAuthHeaders(),
-      body: JSON.stringify(data),
-    });
-
-    return this.handleApiResponse<EmployeeAvailability[]>(response);
   }
 
-  async changePassword(id: string, data: { currentPassword: string, newPassword: string, confirmPassword: string }): Promise<void> {
+  async changePassword(
-    const response = await fetch(`${API_BASE_URL}/employees/${id}/password`, {
+    id: string, 
-      method: 'PUT',
+    data: { currentPassword: string, newPassword: string, confirmPassword: string }
-      headers: getAuthHeaders(),
+  ): Promise<void> {
-      body: JSON.stringify(data),
+    return apiClient.put<void>(`/employees/${id}/password`, data);
-    });
-
-    return this.handleApiResponse<void>(response);
   }
 
   async updateLastLogin(employeeId: string): Promise<void> {
     try {
-      const response = await fetch(`${API_BASE_URL}/employees/${employeeId}/last-login`, {
+      await apiClient.patch(`/employees/${employeeId}/last-login`);
-        method: 'PATCH',
-        headers: getAuthHeaders(),
-      });
-
-      if (!response.ok) {
-        throw new Error('Failed to update last login');
-      }
     } catch (error) {
       console.error('Error updating last login:', error);
       throw error;

frontend/src/services/shiftAssignmentService.ts

@@ -1,65 +1,15 @@
-// frontend/src/services/shiftAssignmentService.ts - WEEKLY PATTERN VERSION
 import { ShiftPlan, ScheduledShift } from '../models/ShiftPlan';
 import { Employee, EmployeeAvailability } from '../models/Employee';
-import { authService } from './authService';
 import { AssignmentResult, ScheduleRequest } from '../models/scheduling';
-
+import { apiClient } from './apiClient';
-const API_BASE_URL = '/api';
-
-// Helper function to get auth headers
-const getAuthHeaders = () => {
-  const token = localStorage.getItem('token');
-  return {
-    'Content-Type': 'application/json',
-    ...(token && { 'Authorization': `Bearer ${token}` })
-  };
-};
 
 export class ShiftAssignmentService {
   async updateScheduledShift(id: string, updates: { assignedEmployees: string[] }): Promise<void> {
     try {
-      //console.log('🔄 Updating scheduled shift via API:', { id, updates });
+      console.log('🔄 Updating scheduled shift via API:', { id, updates });
       
-      const response = await fetch(`${API_BASE_URL}/scheduled-shifts/${id}`, {
+      await apiClient.put(`/scheduled-shifts/${id}`, updates);
-        method: 'PUT',
+      console.log('✅ Scheduled shift updated successfully');
-        headers: {
-          'Content-Type': 'application/json',
-          ...authService.getAuthHeaders()
-        },
-        body: JSON.stringify(updates)
-      });
-
-      // First, check if we got any response
-      if (!response.ok) {
-        // Try to get error message from response
-        const responseText = await response.text();
-        console.error('❌ Server response:', responseText);
-        
-        let errorMessage = `HTTP ${response.status}: ${response.statusText}`;
-        
-        // Try to parse as JSON if possible
-        try {
-          const errorData = JSON.parse(responseText);
-          errorMessage = errorData.error || errorMessage;
-        } catch (e) {
-          // If not JSON, use the text as is
-          errorMessage = responseText || errorMessage;
-        }
-        
-        throw new Error(errorMessage);
-      }
-
-      // Try to parse successful response
-      const responseText = await response.text();
-      let result;
-      try {
-        result = responseText ? JSON.parse(responseText) : {};
-      } catch (e) {
-        console.warn('⚠️ Response was not JSON, but request succeeded');
-        result = { message: 'Update successful' };
-      }
-      
-      console.log('✅ Scheduled shift updated successfully:', result);
       
     } catch (error) {
       console.error('❌ Error updating scheduled shift:', error);
@@ -69,48 +19,16 @@ export class ShiftAssignmentService {
 
   async getScheduledShift(id: string): Promise<any> {
     try {
-      const response = await fetch(`${API_BASE_URL}/scheduled-shifts/${id}`, {
+      return await apiClient.get(`/scheduled-shifts/${id}`);
-        headers: {
-          'Authorization': `Bearer ${localStorage.getItem('token')}`
-        }
-      });
-
-      if (!response.ok) {
-        const responseText = await response.text();
-        let errorMessage = `HTTP ${response.status}: ${response.statusText}`;
-        
-        try {
-          const errorData = JSON.parse(responseText);
-          errorMessage = errorData.error || errorMessage;
-        } catch (e) {
-          errorMessage = responseText || errorMessage;
-        }
-        
-        throw new Error(errorMessage);
-      }
-
-      const responseText = await response.text();
-      return responseText ? JSON.parse(responseText) : {};
     } catch (error) {
       console.error('Error fetching scheduled shift:', error);
       throw error;
     }
   }
 
-  // New method to get all scheduled shifts for a plan
   async getScheduledShiftsForPlan(planId: string): Promise<ScheduledShift[]> {
     try {
-      const response = await fetch(`${API_BASE_URL}/scheduled-shifts/plan/${planId}`, {
+      const shifts = await apiClient.get<ScheduledShift[]>(`/scheduled-shifts/plan/${planId}`);
-        headers: {
-          'Authorization': `Bearer ${localStorage.getItem('token')}`
-        }
-      });
-
-      if (!response.ok) {
-        throw new Error(`Failed to fetch scheduled shifts: ${response.status}`);
-      }
-
-      const shifts = await response.json();
       
       // DEBUG: Check the structure of returned shifts
       console.log('🔍 SCHEDULED SHIFTS STRUCTURE:', shifts.slice(0, 3));
@@ -132,21 +50,7 @@ export class ShiftAssignmentService {
   }
 
   private async callSchedulingAPI(request: ScheduleRequest): Promise<AssignmentResult> {
-    const response = await fetch(`${API_BASE_URL}/scheduling/generate-schedule`, {
+    return await apiClient.post<AssignmentResult>('/scheduling/generate-schedule', request);
-      method: 'POST',
-      headers: {
-          'Content-Type': 'application/json',
-          ...authService.getAuthHeaders()
-        },
-      body: JSON.stringify(request)
-    });
-
-    if (!response.ok) {
-      const errorData = await response.json();
-      throw new Error(errorData.error || 'Scheduling failed');
-    }
-
-    return response.json();
   }
 
   async assignShifts(

frontend/src/services/shiftPlanService.ts

@@ -1,198 +1,114 @@
-// frontend/src/services/shiftPlanService.ts
-import { authService } from './authService';
 import { ShiftPlan, CreateShiftPlanRequest } from '../models/ShiftPlan';
 import { TEMPLATE_PRESETS } from '../models/defaults/shiftPlanDefaults';
-
+import { apiClient } from './apiClient';
-const API_BASE_URL = '/api/shift-plans';
-
-// Helper function to get auth headers
-const getAuthHeaders = () => {
-  const token = localStorage.getItem('token');
-  return {
-    'Content-Type': 'application/json',
-    ...(token && { 'Authorization': `Bearer ${token}` })
-  };
-};
-
-// Helper function to handle responses
-const handleResponse = async (response: Response) => {
-  if (!response.ok) {
-    const errorData = await response.json().catch(() => ({ error: 'Unknown error' }));
-    throw new Error(errorData.error || `HTTP error! status: ${response.status}`);
-  }
-  return response.json();
-};
 
 export const shiftPlanService = {
   async getShiftPlans(): Promise<ShiftPlan[]> {
-    const response = await fetch(API_BASE_URL, {
+    try {
-      headers: {
+      const plans = await apiClient.get<ShiftPlan[]>('/shift-plans');
-        'Content-Type': 'application/json',
-        ...authService.getAuthHeaders()
-      }
-    });
-    
-    if (!response.ok) {
-      if (response.status === 401) {
-        authService.logout();
-        throw new Error('Nicht authorisiert - bitte erneut anmelden');
-      }
-      throw new Error('Fehler beim Laden der Schichtpläne');
-    }
-    
-    const plans = await response.json();
       
       // Ensure scheduledShifts is always an array
       return plans.map((plan: any) => ({
         ...plan,
         scheduledShifts: plan.scheduledShifts || []
       }));
+    } catch (error: any) {
+      if (error.statusCode === 401) {
+        // You might want to import and use authService here if needed
+        localStorage.removeItem('token');
+        localStorage.removeItem('employee');
+        throw new Error('Nicht authorisiert - bitte erneut anmelden');
+      }
+      throw new Error('Fehler beim Laden der Schichtpläne');
+    }
   },
 
   async getShiftPlan(id: string): Promise<ShiftPlan> {
-    const response = await fetch(`${API_BASE_URL}/${id}`, {
+    try {
-      headers: {
+      return await apiClient.get<ShiftPlan>(`/shift-plans/${id}`);
-        'Content-Type': 'application/json',
+    } catch (error: any) {
-        ...authService.getAuthHeaders()
+      if (error.statusCode === 401) {
-      }
+        localStorage.removeItem('token');
-    });
+        localStorage.removeItem('employee');
-    
-    if (!response.ok) {
-      if (response.status === 401) {
-        authService.logout();
         throw new Error('Nicht authorisiert - bitte erneut anmelden');
       }
       throw new Error('Schichtplan nicht gefunden');
     }
-    
-    return await response.json();
   },
 
   async createShiftPlan(plan: CreateShiftPlanRequest): Promise<ShiftPlan> {
-    const response = await fetch(API_BASE_URL, {
+    try {
-      method: 'POST',
+      return await apiClient.post<ShiftPlan>('/shift-plans', plan);
-      headers: {
+    } catch (error: any) {
-        'Content-Type': 'application/json',
+      if (error.statusCode === 401) {
-        ...authService.getAuthHeaders()
+        localStorage.removeItem('token');
-      },
+        localStorage.removeItem('employee');
-      body: JSON.stringify(plan)
-    });
-
-    if (!response.ok) {
-      if (response.status === 401) {
-        authService.logout();
         throw new Error('Nicht authorisiert - bitte erneut anmelden');
       }
       throw new Error('Fehler beim Erstellen des Schichtplans');
     }
-
-    return response.json();
   },
 
   async updateShiftPlan(id: string, plan: Partial<ShiftPlan>): Promise<ShiftPlan> {
-    const response = await fetch(`${API_BASE_URL}/${id}`, {
+    try {
-      method: 'PUT',
+      return await apiClient.put<ShiftPlan>(`/shift-plans/${id}`, plan);
-      headers: {
+    } catch (error: any) {
-        'Content-Type': 'application/json',
+      if (error.statusCode === 401) {
-        ...authService.getAuthHeaders()
+        localStorage.removeItem('token');
-      },
+        localStorage.removeItem('employee');
-      body: JSON.stringify(plan)
-    });
-
-    if (!response.ok) {
-      if (response.status === 401) {
-        authService.logout();
         throw new Error('Nicht authorisiert - bitte erneut anmelden');
       }
       throw new Error('Fehler beim Aktualisieren des Schichtplans');
     }
-
-    return response.json();
   },
 
   async deleteShiftPlan(id: string): Promise<void> {
-    const response = await fetch(`${API_BASE_URL}/${id}`, {
+    try {
-      method: 'DELETE',
+      await apiClient.delete(`/shift-plans/${id}`);
-      headers: {
+    } catch (error: any) {
-        'Content-Type': 'application/json',
+      if (error.statusCode === 401) {
-        ...authService.getAuthHeaders()
+        localStorage.removeItem('token');
-      }
+        localStorage.removeItem('employee');
-    });
-
-    if (!response.ok) {
-      if (response.status === 401) {
-        authService.logout();
         throw new Error('Nicht authorisiert - bitte erneut anmelden');
       }
       throw new Error('Fehler beim Löschen des Schichtplans');
     }
   },
 
-  // Get specific template or plan
+  async getTemplate(id: string): Promise<ShiftPlan> {
-  getTemplate: async (id: string): Promise<ShiftPlan> => {
+    return await apiClient.get<ShiftPlan>(`/shift-plans/${id}`);
-    const response = await fetch(`${API_BASE_URL}/${id}`, {
-      headers: getAuthHeaders()
-    });
-    return handleResponse(response);
   },
 
-
+  async regenerateScheduledShifts(planId: string): Promise<void> {
-  async regenerateScheduledShifts(planId: string):Promise<void> {
     try {
       console.log('🔄 Attempting to regenerate scheduled shifts...');
-        
+      await apiClient.post(`/shift-plans/${planId}/regenerate-shifts`);
-        // You'll need to add this API endpoint to your backend
-        const response = await fetch(`${API_BASE_URL}/${planId}/regenerate-shifts`, {
-        method: 'POST',
-        headers: {
-            'Content-Type': 'application/json',
-            'Authorization': `Bearer ${localStorage.getItem('token')}`
-        }
-        });
-
-        if (response.ok) {
       console.log('✅ Scheduled shifts regenerated');
-        } else {
-        console.error('❌ Failed to regenerate shifts');
-        }
     } catch (error) {
       console.error('❌ Error regenerating shifts:', error);
+      throw error;
     }
   },
 
-  // Create new plan
+  async createPlan(data: CreateShiftPlanRequest): Promise<ShiftPlan> {
-  createPlan: async (data: CreateShiftPlanRequest): Promise<ShiftPlan> => {
+    return await apiClient.post<ShiftPlan>('/shift-plans', data);
-    const response = await fetch(`${API_BASE_URL}`, {
-      method: 'POST',
-      headers: getAuthHeaders(),
-      body: JSON.stringify(data),
-    });
-    return handleResponse(response);
   },
 
-  createFromPreset: async (data: {
+  async createFromPreset(data: {
     presetName: string;
     name: string;
     startDate: string;
     endDate: string;
     isTemplate?: boolean;
-  }): Promise<ShiftPlan> => {
+  }): Promise<ShiftPlan> {
-    const response = await fetch(`${API_BASE_URL}/from-preset`, {
+    try {
-      method: 'POST',
+      return await apiClient.post<ShiftPlan>('/shift-plans/from-preset', data);
-      headers: getAuthHeaders(),
+    } catch (error: any) {
-      body: JSON.stringify(data),
+      throw new Error(error.message || `HTTP error! status: ${error.statusCode}`);
-    });
-    
-    if (!response.ok) {
-      const errorData = await response.json().catch(() => ({ error: 'Unknown error' }));
-      throw new Error(errorData.error || `HTTP error! status: ${response.status}`);
     }
-    
-    return response.json();
   },
 
-  getTemplatePresets: async (): Promise<{name: string, label: string, description: string}[]> => {
+  async getTemplatePresets(): Promise<{name: string, label: string, description: string}[]> {
-    // name = label
     return Object.entries(TEMPLATE_PRESETS).map(([key, preset]) => ({
       name: key,
       label: preset.name,
@@ -203,22 +119,8 @@ export const shiftPlanService = {
   async clearAssignments(planId: string): Promise<void> {
     try {
       console.log('🔄 Clearing assignments for plan:', planId);
-      
+      await apiClient.post(`/shift-plans/${planId}/clear-assignments`);
-      const response = await fetch(`${API_BASE_URL}/${planId}/clear-assignments`, {
-        method: 'POST',
-        headers: {
-          'Content-Type': 'application/json',
-          ...authService.getAuthHeaders()
-        }
-      });
-
-      if (!response.ok) {
-        const errorData = await response.json().catch(() => ({ error: 'Unknown error' }));
-        throw new Error(errorData.error || `Failed to clear assignments: ${response.status}`);
-      }
-
       console.log('✅ Assignments cleared successfully');
-      
     } catch (error) {
       console.error('❌ Error clearing assignments:', error);
       throw error;

frontend/vite.config.ts

@@ -1,29 +1,18 @@
-// vite.config.ts
 import { defineConfig, loadEnv } from 'vite'
 import react from '@vitejs/plugin-react'
 import { resolve } from 'path'
 
 export default defineConfig(({ mode }) => {
   const isProduction = mode === 'production'
-  const isDevelopment = mode === 'development'
-
   const env = loadEnv(mode, process.cwd(), '')
 
-  // 🆕 WICHTIG: Relative Pfade für Production
-  const clientEnv = {
-    NODE_ENV: mode,
-    ENABLE_PRO: env.ENABLE_PRO || 'false',
-    VITE_APP_TITLE: env.APP_TITLE || 'Shift Planning App',
-    VITE_API_URL: isProduction ? '/api' : '/api',
-  }
-
   return {
     plugins: [react()],
 
-    server: {
+    // Development proxy
+    server: isProduction ? undefined : {
       port: 3003,
       host: true,
-      //open: isDevelopment,
       proxy: {
         '/api': {
           target: 'http://localhost:3002',
@@ -33,25 +22,38 @@ export default defineConfig(({ mode }) => {
       }
     },
 
+    // Production build optimized for Express serving
     build: {
       outDir: 'dist',
-      sourcemap: isDevelopment,
+      sourcemap: false, // Disable in production
-      base: isProduction ? '/' : '/',
+      minify: 'terser',
+      
+      // Bundle optimization
       rollupOptions: {
         output: {
+          // Efficient chunking
+          manualChunks: {
+            vendor: ['react', 'react-dom', 'react-router-dom'],
+            utils: ['date-fns']
+          },
+          // Cache-friendly naming
           chunkFileNames: 'assets/[name]-[hash].js',
           entryFileNames: 'assets/[name]-[hash].js',
           assetFileNames: 'assets/[name]-[hash].[ext]',
         }
       },
-      minify: isProduction ? 'terser' : false,
+      
-      terserOptions: isProduction ? {
+      // Performance optimizations
+      terserOptions: {
         compress: {
           drop_console: true,
           drop_debugger: true,
-          pure_funcs: ['console.log', 'console.debug', 'console.info']
+          pure_funcs: ['console.log', 'console.debug']
         }
-      } : undefined,
+      },
+      
+      // Reduce chunking overhead
+      chunkSizeWarningLimit: 800
     },
 
     resolve: {
@@ -67,9 +69,11 @@ export default defineConfig(({ mode }) => {
       }
     },
 
-    define: Object.keys(clientEnv).reduce((acc, key) => {
+    // Environment variables
-      acc[`import.meta.env.${key}`] = JSON.stringify(clientEnv[key])
+    define: {
-      return acc
+      'import.meta.env.VITE_API_URL': JSON.stringify(isProduction ? '/api' : '/api'),
-    }, {} as Record<string, string>)
+      'import.meta.env.ENABLE_PRO': JSON.stringify(env.ENABLE_PRO || 'false'),
+      'import.meta.env.NODE_ENV': JSON.stringify(mode)
+    }
   }
 })

package-lock.json

@@ -11,6 +11,7 @@
         "premium"
       ],
       "devDependencies": {
+        "concurrently": "9.2.1",
         "typescript": "^5.3.3"
       }
     },
@@ -19,6 +20,7 @@
       "version": "1.0.0",
       "dependencies": {
         "@types/bcrypt": "^6.0.0",
+        "@types/node": "24.9.2",
         "bcrypt": "^6.0.0",
         "bcryptjs": "^2.4.3",
         "express": "^4.18.2",
@@ -27,7 +29,8 @@
         "helmet": "8.1.0",
         "jsonwebtoken": "^9.0.2",
         "sqlite3": "^5.1.6",
-        "uuid": "^9.0.0"
+        "uuid": "^9.0.0",
+        "vite": "7.1.12"
       },
       "devDependencies": {
         "@types/bcryptjs": "^2.4.2",
@@ -35,6 +38,7 @@
         "@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"
@@ -56,7 +60,6 @@
       "cpu": [
         "x64"
       ],
-      "dev": true,
       "license": "MIT",
       "optional": true,
       "os": [
@@ -257,10 +260,12 @@
       "license": "MIT"
     },
     "backend/node_modules/@types/node": {
-      "version": "24.7.0",
+      "version": "24.9.2",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-24.9.2.tgz",
+      "integrity": "sha512-uWN8YqxXxqFMX2RqGOrumsKeti4LlmIMIyV0lgut4jx7KQBcBiW6vkDtIBvHnHIquwNfJhk8v2OtmO8zXWHfPA==",
       "license": "MIT",
       "dependencies": {
-        "undici-types": "~7.14.0"
+        "undici-types": "~7.16.0"
       }
     },
     "backend/node_modules/@types/qs": {
@@ -609,11 +614,6 @@
         "safe-buffer": "^5.0.1"
       }
     },
-    "backend/node_modules/emoji-regex": {
-      "version": "8.0.0",
-      "license": "MIT",
-      "optional": true
-    },
     "backend/node_modules/encoding": {
       "version": "0.1.13",
       "license": "MIT",
@@ -644,7 +644,6 @@
     },
     "backend/node_modules/esbuild": {
       "version": "0.25.11",
-      "dev": true,
       "hasInstallScript": true,
       "license": "MIT",
       "bin": {
@@ -747,7 +746,7 @@
     },
     "backend/node_modules/get-tsconfig": {
       "version": "4.12.0",
-      "dev": true,
+      "devOptional": true,
       "license": "MIT",
       "dependencies": {
         "resolve-pkg-maps": "^1.0.0"
@@ -877,24 +876,11 @@
       "version": "1.3.8",
       "license": "ISC"
     },
-    "backend/node_modules/is-fullwidth-code-point": {
-      "version": "3.0.0",
-      "license": "MIT",
-      "optional": true,
-      "engines": {
-        "node": ">=8"
-      }
-    },
     "backend/node_modules/is-lambda": {
       "version": "1.0.1",
       "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,
@@ -1422,7 +1408,7 @@
     },
     "backend/node_modules/resolve-pkg-maps": {
       "version": "1.0.0",
-      "dev": true,
+      "devOptional": true,
       "license": "MIT",
       "funding": {
         "url": "https://github.com/privatenumber/resolve-pkg-maps?sponsor=1"
@@ -1586,30 +1572,6 @@
         "safe-buffer": "~5.2.0"
       }
     },
-    "backend/node_modules/string-width": {
-      "version": "4.2.3",
-      "license": "MIT",
-      "optional": true,
-      "dependencies": {
-        "emoji-regex": "^8.0.0",
-        "is-fullwidth-code-point": "^3.0.0",
-        "strip-ansi": "^6.0.1"
-      },
-      "engines": {
-        "node": ">=8"
-      }
-    },
-    "backend/node_modules/strip-ansi": {
-      "version": "6.0.1",
-      "license": "MIT",
-      "optional": true,
-      "dependencies": {
-        "ansi-regex": "^5.0.1"
-      },
-      "engines": {
-        "node": ">=8"
-      }
-    },
     "backend/node_modules/strip-json-comments": {
       "version": "2.0.1",
       "license": "MIT",
@@ -1711,7 +1673,7 @@
     },
     "backend/node_modules/tsx": {
       "version": "4.20.6",
-      "dev": true,
+      "devOptional": true,
       "license": "MIT",
       "dependencies": {
         "esbuild": "~0.25.0",
@@ -1738,7 +1700,9 @@
       }
     },
     "backend/node_modules/undici-types": {
-      "version": "7.14.0",
+      "version": "7.16.0",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.16.0.tgz",
+      "integrity": "sha512-Zz+aZWSj8LE6zoxD+xrjh4VfkIG8Ya6LvYkZqtUQGJPZjYl53ypCaUwWqo7eI0x66KBGeRo+mlBEkMSeSZ38Nw==",
       "license": "MIT"
     },
     "backend/node_modules/unique-filename": {
@@ -1777,18 +1741,90 @@
       "dev": true,
       "license": "MIT"
     },
-    "backend/node_modules/which": {
+    "backend/node_modules/vite": {
-      "version": "2.0.2",
+      "version": "7.1.12",
-      "license": "ISC",
+      "resolved": "https://registry.npmjs.org/vite/-/vite-7.1.12.tgz",
-      "optional": true,
+      "integrity": "sha512-ZWyE8YXEXqJrrSLvYgrRP7p62OziLW7xI5HYGWFzOvupfAlrLvURSzv/FyGyy0eidogEM3ujU+kUG1zuHgb6Ug==",
+      "license": "MIT",
       "dependencies": {
-        "isexe": "^2.0.0"
+        "esbuild": "^0.25.0",
+        "fdir": "^6.5.0",
+        "picomatch": "^4.0.3",
+        "postcss": "^8.5.6",
+        "rollup": "^4.43.0",
+        "tinyglobby": "^0.2.15"
       },
       "bin": {
-        "node-which": "bin/node-which"
+        "vite": "bin/vite.js"
       },
       "engines": {
-        "node": ">= 8"
+        "node": "^20.19.0 || >=22.12.0"
+      },
+      "funding": {
+        "url": "https://github.com/vitejs/vite?sponsor=1"
+      },
+      "optionalDependencies": {
+        "fsevents": "~2.3.3"
+      },
+      "peerDependencies": {
+        "@types/node": "^20.19.0 || >=22.12.0",
+        "jiti": ">=1.21.0",
+        "less": "^4.0.0",
+        "lightningcss": "^1.21.0",
+        "sass": "^1.70.0",
+        "sass-embedded": "^1.70.0",
+        "stylus": ">=0.54.8",
+        "sugarss": "^5.0.0",
+        "terser": "^5.16.0",
+        "tsx": "^4.8.1",
+        "yaml": "^2.4.2"
+      },
+      "peerDependenciesMeta": {
+        "@types/node": {
+          "optional": true
+        },
+        "jiti": {
+          "optional": true
+        },
+        "less": {
+          "optional": true
+        },
+        "lightningcss": {
+          "optional": true
+        },
+        "sass": {
+          "optional": true
+        },
+        "sass-embedded": {
+          "optional": true
+        },
+        "stylus": {
+          "optional": true
+        },
+        "sugarss": {
+          "optional": true
+        },
+        "terser": {
+          "optional": true
+        },
+        "tsx": {
+          "optional": true
+        },
+        "yaml": {
+          "optional": true
+        }
+      }
+    },
+    "backend/node_modules/vite/node_modules/picomatch": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.3.tgz",
+      "integrity": "sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/jonschlinkert"
       }
     },
     "backend/node_modules/wide-align": {
@@ -2116,6 +2152,13 @@
         "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": [
@@ -2212,7 +2255,7 @@
     },
     "node_modules/@jridgewell/gen-mapping": {
       "version": "0.3.13",
-      "dev": true,
+      "devOptional": true,
       "license": "MIT",
       "dependencies": {
         "@jridgewell/sourcemap-codec": "^1.5.0",
@@ -2230,7 +2273,7 @@
     },
     "node_modules/@jridgewell/resolve-uri": {
       "version": "3.1.2",
-      "dev": true,
+      "devOptional": true,
       "license": "MIT",
       "engines": {
         "node": ">=6.0.0"
@@ -2240,7 +2283,7 @@
       "version": "0.3.11",
       "resolved": "https://registry.npmjs.org/@jridgewell/source-map/-/source-map-0.3.11.tgz",
       "integrity": "sha512-ZMp1V8ZFcPG5dIWnQLr3NSI1MiCU7UETdS/A0G8V/XWHvJv3ZsFqutJn1Y5RPmAPX6F3BiE397OqveU/9NCuIA==",
-      "dev": true,
+      "devOptional": true,
       "license": "MIT",
       "dependencies": {
         "@jridgewell/gen-mapping": "^0.3.5",
@@ -2249,12 +2292,12 @@
     },
     "node_modules/@jridgewell/sourcemap-codec": {
       "version": "1.5.5",
-      "dev": true,
+      "devOptional": true,
       "license": "MIT"
     },
     "node_modules/@jridgewell/trace-mapping": {
       "version": "0.3.31",
-      "dev": true,
+      "devOptional": true,
       "license": "MIT",
       "dependencies": {
         "@jridgewell/resolve-uri": "^3.1.0",
@@ -2278,7 +2321,6 @@
       "cpu": [
         "x64"
       ],
-      "dev": true,
       "license": "MIT",
       "optional": true,
       "os": [
@@ -2290,7 +2332,6 @@
       "cpu": [
         "x64"
       ],
-      "dev": true,
       "license": "MIT",
       "optional": true,
       "os": [
@@ -2581,7 +2622,6 @@
     },
     "node_modules/@types/estree": {
       "version": "1.0.8",
-      "dev": true,
       "license": "MIT"
     },
     "node_modules/@types/history": {
@@ -2820,7 +2860,7 @@
       "version": "8.15.0",
       "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.15.0.tgz",
       "integrity": "sha512-NZyJarBfL7nWwIq+FDL6Zp/yHEhePMNnnJ0y3qfieCrmNvYct8uvtiV41UvlSe6apAfk0fY1FbWx+NwfmpvtTg==",
-      "dev": true,
+      "devOptional": true,
       "license": "MIT",
       "bin": {
         "acorn": "bin/acorn"
@@ -2999,7 +3039,7 @@
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.2.tgz",
       "integrity": "sha512-E+XQCRwSbaaiChtv6k6Dwgc+bx+Bs6vuKJHHl5kox/BaKbhiXzqQOwK4cO22yElGp2OCmjwVhT3HmxgyPGnJfQ==",
-      "dev": true,
+      "devOptional": true,
       "license": "MIT"
     },
     "node_modules/bytes": {
@@ -3121,6 +3161,21 @@
         "node": ">=8"
       }
     },
+    "node_modules/cliui": {
+      "version": "8.0.1",
+      "resolved": "https://registry.npmjs.org/cliui/-/cliui-8.0.1.tgz",
+      "integrity": "sha512-BSeNnyus75C4//NQ9gQt1/csTXyo/8Sb+afLAkzAptFuMsod9HFokGNudZpi/oQV73hnVK+sR+5PVRMd+Dr7YQ==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "string-width": "^4.2.0",
+        "strip-ansi": "^6.0.1",
+        "wrap-ansi": "^7.0.0"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/color-convert": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
@@ -3145,9 +3200,50 @@
       "version": "2.20.3",
       "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.3.tgz",
       "integrity": "sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==",
-      "dev": true,
+      "devOptional": true,
       "license": "MIT"
     },
+    "node_modules/concurrently": {
+      "version": "9.2.1",
+      "resolved": "https://registry.npmjs.org/concurrently/-/concurrently-9.2.1.tgz",
+      "integrity": "sha512-fsfrO0MxV64Znoy8/l1vVIjjHa29SZyyqPgQBwhiDcaW8wJc2W3XWVOGx4M3oJBnv/zdUZIIp1gDeS98GzP8Ng==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "chalk": "4.1.2",
+        "rxjs": "7.8.2",
+        "shell-quote": "1.8.3",
+        "supports-color": "8.1.1",
+        "tree-kill": "1.2.2",
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@@ -3301,6 +3430,13 @@
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@@ -3658,6 +3793,20 @@
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@@ -3675,6 +3824,16 @@
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@@ -3846,6 +4015,13 @@
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@@ -4238,7 +4421,6 @@
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@@ -4435,9 +4617,18 @@
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+      "dev": true,
+      "license": "MIT",
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       "version": "4.52.5",
-      "dev": true,
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       "dependencies": {
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@@ -4475,6 +4666,16 @@
         "fsevents": "~2.3.2"
       }
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+      "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-7.8.2.tgz",
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+      "dev": true,
+      "license": "Apache-2.0",
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+    "node_modules/shebang-command": {
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+      "license": "MIT",
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+      "dev": true,
+      "license": "MIT",
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+    },
+    "node_modules/shell-quote": {
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+      "dev": true,
+      "license": "MIT",
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+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
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-      "dev": true,
+      "devOptional": true,
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@@ -4680,7 +4917,6 @@
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-      "dev": true,
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-      "dev": true,
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@@ -4769,6 +5005,34 @@
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+    "node_modules/string-width": {
+      "version": "4.2.3",
+      "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.3.tgz",
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+      "devOptional": true,
+      "license": "MIT",
+      "dependencies": {
+        "emoji-regex": "^8.0.0",
+        "is-fullwidth-code-point": "^3.0.0",
+        "strip-ansi": "^6.0.1"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/strip-ansi": {
+      "version": "6.0.1",
+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.1.tgz",
+      "integrity": "sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==",
+      "devOptional": true,
+      "license": "MIT",
+      "dependencies": {
+        "ansi-regex": "^5.0.1"
+      },
+      "engines": {
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+    },
     "node_modules/strip-indent": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/strip-indent/-/strip-indent-3.0.0.tgz",
@@ -4799,7 +5063,7 @@
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-      "dev": true,
+      "devOptional": true,
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@@ -4824,7 +5088,6 @@
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-      "dev": true,
       "license": "MIT",
       "dependencies": {
         "fdir": "^6.5.0",
@@ -4881,6 +5144,16 @@
         "node": ">=0.6"
       }
     },
+    "node_modules/tree-kill": {
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/tree-kill/-/tree-kill-1.2.2.tgz",
+      "integrity": "sha512-L0Orpi8qGpRG//Nd+H90vFB+3iHnue1zSSGmNOOCh1GLJ7rUKVwV2HvijphGQS2UmhUZewS9VgvxYIdgr+fG1A==",
+      "dev": true,
+      "license": "MIT",
+      "bin": {
+        "tree-kill": "cli.js"
+      }
+    },
     "node_modules/tslib": {
       "version": "2.8.1",
       "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.8.1.tgz",
@@ -5111,6 +5384,40 @@
         "@esbuild/win32-x64": "0.25.11"
       }
     },
+    "node_modules/which": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
+      "integrity": "sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA==",
+      "devOptional": true,
+      "license": "ISC",
+      "dependencies": {
+        "isexe": "^2.0.0"
+      },
+      "bin": {
+        "node-which": "bin/node-which"
+      },
+      "engines": {
+        "node": ">= 8"
+      }
+    },
+    "node_modules/wrap-ansi": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-7.0.0.tgz",
+      "integrity": "sha512-YVGIj2kamLSTxw6NsZjoBxfSwsn0ycdesmc4p+Q21c5zPuZ1pl+NfxVdxPtdHvmNVOQ6XSYG4AUtyt/Fi7D16Q==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "ansi-styles": "^4.0.0",
+        "string-width": "^4.1.0",
+        "strip-ansi": "^6.0.0"
+      },
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/wrap-ansi?sponsor=1"
+      }
+    },
     "node_modules/ws": {
       "version": "8.18.3",
       "resolved": "https://registry.npmjs.org/ws/-/ws-8.18.3.tgz",
@@ -5134,11 +5441,50 @@
         }
       }
     },
+    "node_modules/y18n": {
+      "version": "5.0.8",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-5.0.8.tgz",
+      "integrity": "sha512-0pfFzegeDWJHJIAmTLRP2DwHjdF5s7jo9tuztdQxAhINCdvS+3nGINqPd00AphqJR/0LhANUS6/+7SCb98YOfA==",
+      "dev": true,
+      "license": "ISC",
+      "engines": {
+        "node": ">=10"
+      }
+    },
     "node_modules/yallist": {
       "version": "3.1.1",
       "dev": true,
       "license": "ISC"
     },
+    "node_modules/yargs": {
+      "version": "17.7.2",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-17.7.2.tgz",
+      "integrity": "sha512-7dSzzRQ++CKnNI/krKnYRV7JKKPUXMEh61soaHKg9mrWEhzFWhFnxPxGl+69cD1Ou63C13NUPCnmIcrvqCuM6w==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "cliui": "^8.0.1",
+        "escalade": "^3.1.1",
+        "get-caller-file": "^2.0.5",
+        "require-directory": "^2.1.1",
+        "string-width": "^4.2.3",
+        "y18n": "^5.0.5",
+        "yargs-parser": "^21.1.1"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/yargs-parser": {
+      "version": "21.1.1",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-21.1.1.tgz",
+      "integrity": "sha512-tVpsJW7DdjecAiFpbIB1e3qxIQsE6NoPc5/eTdrbbIC4h0LVsWhnoa3g+m2HclBIujHzsxZ4VJVA+GUuc2/LBw==",
+      "dev": true,
+      "license": "ISC",
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "premium": {
       "name": "@schichtenplaner/premium",
       "version": "1.0.0",

package.json

@@ -9,9 +9,13 @@
   "scripts": {
     "docker:build": "docker build -t schichtplan-app .",
     "docker:run": "docker run -p 3002:3002 schichtplan-app",
-    "build:all": "npm run build --workspace=backend && npm run build --workspace=frontend"
+    "build:all": "npm run build --workspace=backend && npm run build --workspace=frontend",
+    "dev": "concurrently \"npm run dev:backend\" \"npm run dev:frontend\"",
+    "dev:frontend": "cd frontend && npm run dev",
+    "dev:backend": "cd backend && npm run dev:single"
   },
   "devDependencies": {
-    "typescript": "^5.3.3"
+    "typescript": "^5.3.3",
+    "concurrently": "9.2.1"
   }
 }