added license

LICENSE-COMMERCIAL

@@ -0,0 +1,21 @@
+COMMERCIAL LICENSE AGREEMENT
+Copyright (c) 2025 Patrick Mahnke-Hartmann
+
+This software, "Schichtenplaner", is offered under a dual licensing model.
+
+1. Open-Source License
+   You may use this software under the terms of the MIT License
+   (see LICENSE file) for non-commercial, personal, or educational use.
+
+2. Commercial License
+   Commercial use of this software requires a separate paid license.
+   This includes, but is not limited to:
+   - Use in proprietary, for-profit, or internal business applications
+   - Use within paid services or SaaS offerings
+   - Integration into commercial software or distributions
+
+To obtain a commercial license, please contact:
+📧 patrick@mahnke-hartmann.dev
+or open an inquiry via GitHub: https://github.com/donpat1to/Schichtenplaner
+
+Without a valid commercial license, all commercial rights are reserved.

README.md

@@ -2,4 +2,14 @@
 Aufteilung der Schichten unter Mitarbeitern
 
 
-du knlich
+## 🧾 License
+
+This project uses a **dual license model**:
+
+- **Community Edition:** Licensed under [MIT](./LICENSE) for personal and non-commercial use.
+- **Commercial Edition:** A [commercial license](./LICENSE-COMMERCIAL) is required for any for-profit or business use.
+
+To obtain a commercial license, contact:  
+📧 patrick@mahnke-hartmann.dev
+
+[![License: MIT & Commercial](https://img.shields.io/badge/license-MIT%20%7C%20Commercial-purple)](#license)

backend/src/server.ts

@@ -3,6 +3,7 @@ import express from 'express';
 import path from 'path';
 import { fileURLToPath } from 'url';
 import { initializeDatabase } from './scripts/initializeDatabase.js';
+import fs from 'fs';
 
 // Route imports
 import authRoutes from './routes/auth.js';
@@ -39,11 +40,50 @@ app.get('/api/health', (req: any, res: any) => {
 });
 
 // 🆕 STATIC FILE SERVING FÜR FRONTEND
-app.use(express.static(path.join(__dirname, '../../frontend-build')));
+const frontendBuildPath = path.join(__dirname, '../frontend-build');
+console.log('📁 Frontend build path:', frontendBuildPath);
+
+// Überprüfe ob das Verzeichnis existiert
+if (fs.existsSync(frontendBuildPath)) {
+  console.log('✅ Frontend build directory exists');
+  const files = fs.readdirSync(frontendBuildPath);
+  console.log('📄 Files in frontend-build:', files);
+  
+  // Serviere statische Dateien
+  app.use(express.static(frontendBuildPath));
+  
+  console.log('✅ Static file serving configured');
+} else {
+  console.log('❌ Frontend build directory NOT FOUND:', frontendBuildPath);
+}
+
+app.get('/', (req, res) => {
+  const indexPath = path.join(frontendBuildPath, 'index.html');
+  console.log('📄 Serving index.html from:', indexPath);
+  
+  if (fs.existsSync(indexPath)) {
+    res.sendFile(indexPath);
+  } else {
+    console.error('❌ index.html not found at:', indexPath);
+    res.status(404).send('Frontend not found - index.html missing');
+  }
+});
 
-// 🆕 FALLBACK FÜR CLIENT-SIDE ROUTING
 app.get('*', (req, res) => {
-  res.sendFile(path.join(__dirname, '../../frontend-build/index.html'));
+  // Ignoriere API Routes
+  if (req.path.startsWith('/api/')) {
+    return res.status(404).json({ error: 'API endpoint not found' });
+  }
+  
+  const indexPath = path.join(frontendBuildPath, 'index.html');
+  console.log('🔄 Client-side routing for:', req.path, '-> index.html');
+  
+  if (fs.existsSync(indexPath)) {
+    res.sendFile(indexPath);
+  } else {
+    console.error('❌ index.html not found for client-side routing');
+    res.status(404).json({ error: 'Frontend application not found' });
+  }
 });
 
 // Error handling middleware

backend/src/services/databaseService.ts

@@ -1,3 +1,4 @@
+// backend/src/services/databaseService
 import sqlite3 from 'sqlite3';
 import path from 'path';
 import { fileURLToPath } from 'url';

frontend/.env.development

@@ -0,0 +1,4 @@
+# frontend/.env.development
+BROWSER=none
+FAST_REFRESH=true
+DANGEROUSLY_DISABLE_HOST_CHECK=true

frontend/package.json

@@ -2,6 +2,7 @@
   "name": "frontend",
   "version": "0.1.0",
   "private": true,
+  "proxy": "http://localhost:3002",
   "dependencies": {
     "@testing-library/dom": "^10.4.1",
     "@testing-library/jest-dom": "^6.9.1",
@@ -15,7 +16,6 @@
     "react": "^19.2.0",
     "react-dom": "^19.2.0",
     "react-router-dom": "^7.9.3",
-    "react-scripts": "5.0.1",
     "typescript": "^4.9.5",
     "web-vitals": "^2.1.4"
   },
@@ -42,5 +42,9 @@
       "last 1 firefox version",
       "last 1 safari version"
     ]
+  },
+  "devDependencies": {
+    "http-proxy-middleware": "^3.0.5",
+    "react-scripts": "^5.0.1"
   }
 }

frontend/src/contexts/AuthContext.tsx

@@ -20,7 +20,7 @@ interface AuthContextType {
 }
 
 const AuthContext = createContext<AuthContextType | undefined>(undefined);
-const API_BASE_URL = process.env.REACT_APP_API_BASE_URL || 'http://localhost:3002/api';
+const API_BASE_URL = process.env.REACT_APP_API_BASE_URL || '/api';
 
 interface AuthProviderProps {
   children: ReactNode;

frontend/src/pages/Auth/Login.tsx

@@ -1,17 +1,20 @@
-// frontend/src/pages/Auth/Login.tsx - KORRIGIERT
-import React, { useState, useEffect } from 'react';
+// frontend/src/pages/Auth/Login.tsx - UPDATED PASSWORD SECTION
+import React, { useState, useEffect, useRef } from 'react';
 import { useNavigate } from 'react-router-dom';
 import { useAuth } from '../../contexts/AuthContext';
 import { useNotification } from '../../contexts/NotificationContext';
-import { employeeService } from '../../services/employeeService';
 
 const Login: React.FC = () => {
   const [email, setEmail] = useState('');
   const [password, setPassword] = useState('');
+  const [showPassword, setShowPassword] = useState(false);
   const [loading, setLoading] = useState(false);
   const { login, user } = useAuth();
   const { showNotification } = useNotification();
   const navigate = useNavigate();
+  
+  const holdTimeoutRef = useRef<NodeJS.Timeout | null>(null);
+  const passwordInputRef = useRef<HTMLInputElement>(null);
 
   useEffect(() => {
     if (user) {
@@ -20,6 +23,47 @@ const Login: React.FC = () => {
     }
   }, [user, navigate]);
 
+  // Cleanup timeouts on unmount
+  useEffect(() => {
+    return () => {
+      if (holdTimeoutRef.current) {
+        clearTimeout(holdTimeoutRef.current);
+      }
+    };
+  }, []);
+
+  const handleMouseDown = () => {
+    // Start timeout to show password after a brief delay (300ms)
+    holdTimeoutRef.current = setTimeout(() => {
+      setShowPassword(true);
+    }, 300);
+  };
+
+  const handleMouseUp = () => {
+    // Clear the timeout if user releases before delay completes
+    if (holdTimeoutRef.current) {
+      clearTimeout(holdTimeoutRef.current);
+      holdTimeoutRef.current = null;
+    }
+    // Always hide password on release
+    setShowPassword(false);
+  };
+
+  const handleTouchStart = (e: React.TouchEvent) => {
+    e.preventDefault(); // Prevent context menu on mobile
+    handleMouseDown();
+  };
+
+  const handleTouchEnd = (e: React.TouchEvent) => {
+    e.preventDefault();
+    handleMouseUp();
+  };
+
+  // Prevent context menu on long press
+  const handleContextMenu = (e: React.MouseEvent) => {
+    e.preventDefault();
+  };
+
   const handleSubmit = async (e: React.FormEvent) => {
     e.preventDefault();
     setLoading(true);
@@ -35,7 +79,6 @@ const Login: React.FC = () => {
         message: `Willkommen zurück!`
       });
       
-      // Navigiere zur Startseite
       navigate('/');
       
     } catch (error: any) {
@@ -50,7 +93,6 @@ const Login: React.FC = () => {
     }
   };
 
-  // Wenn bereits eingeloggt, zeige Ladeanzeige
   if (user) {
     return (
       <div style={{ textAlign: 'center', padding: '40px' }}>
@@ -77,7 +119,7 @@ const Login: React.FC = () => {
       }}>
         <h2 style={{ textAlign: 'center', marginBottom: '30px' }}>Anmeldung</h2>
         
-        <div style={{ marginBottom: '20px' }}>
+        <div style={{ marginBottom: '20px', width: '100%' }}>
           <label style={{ display: 'block', marginBottom: '8px', fontWeight: 'bold' }}>
             E-Mail
           </label>
@@ -87,7 +129,7 @@ const Login: React.FC = () => {
             onChange={(e) => setEmail(e.target.value)}
             required
             style={{
-              width: '100%',
+              width: '94.5%',
               padding: '10px',
               border: '1px solid #ddd',
               borderRadius: '4px',
@@ -97,24 +139,57 @@ const Login: React.FC = () => {
           />
         </div>
 
-        <div style={{ marginBottom: '30px' }}>
+        <div style={{ marginBottom: '30px', width: '100%' }}>
           <label style={{ display: 'block', marginBottom: '8px', fontWeight: 'bold' }}>
             Passwort
           </label>
-          <input
-            type="password"
-            value={password}
-            onChange={(e) => setPassword(e.target.value)}
-            required
-            style={{
-              width: '100%',
-              padding: '10px',
-              border: '1px solid #ddd',
-              borderRadius: '4px',
-              fontSize: '16px'
-            }}
-            placeholder="Ihr Passwort"
-          />
+          <div style={{ position: 'relative' }}>
+            <input
+              ref={passwordInputRef}
+              type={showPassword ? 'text' : 'password'}
+              value={password}
+              onChange={(e) => setPassword(e.target.value)}
+              required
+              style={{
+                width: '94.5%',
+                padding: '10px',
+                paddingRight: '10px',
+                border: '1px solid #ddd',
+                borderRadius: '4px',
+                fontSize: '16px'
+              }}
+              placeholder="Ihr Passwort"
+            />
+            <button
+              type="button"
+              onMouseDown={handleMouseDown}
+              onMouseUp={handleMouseUp}
+              onMouseLeave={handleMouseUp} // Handle mouse leaving while pressed
+              onTouchStart={handleTouchStart}
+              onTouchEnd={handleTouchEnd}
+              onTouchCancel={handleTouchEnd} // Handle touch cancellation
+              onContextMenu={handleContextMenu}
+              style={{
+                position: 'absolute',
+                right: '10px',
+                top: '50%',
+                transform: 'translateY(-50%)',
+                background: 'none',
+                border: 'none',
+                cursor: 'pointer',
+                padding: '1px',
+                borderRadius: '1px',
+                backgroundColor: showPassword ? '#e0e0e0' : 'transparent',
+                transition: 'background-color 0.2s',
+                userSelect: 'none',
+                WebkitUserSelect: 'none',
+                touchAction: 'manipulation'
+              }}
+              title="Gedrückt halten zum Anzeigen des Passworts"
+            >
+              {showPassword ? '👁' : '👁'}
+            </button>
+          </div>
         </div>
 
         <button
@@ -123,7 +198,7 @@ const Login: React.FC = () => {
           style={{
             width: '100%',
             padding: '12px',
-            backgroundColor: loading ? '#ccc' : '#007bff',
+            backgroundColor: loading ? '#ccc' : '#51258f',
             color: 'white',
             border: 'none',
             borderRadius: '4px',

frontend/src/pages/Help/Help.tsx

@@ -1,81 +1,46 @@
 // frontend/src/pages/Help/Help.tsx
-import React, { useState, useEffect } from 'react';
+import React from 'react';
 
 const Help: React.FC = () => {
-  const [currentStage, setCurrentStage] = useState(0);
-  const [isAnimating, setIsAnimating] = useState(false);
+  const businessRules = [
+    { rule: "Mitarbeiter werden nur Schichten zugewiesen, für die sie sich eingetragen haben", critical: true },
+    { rule: "Maximal 1 Schicht pro Tag pro Mitarbeiter", critical: true },
+    { rule: "Schichten haben Mindest- und Maximalkapazitäten", critical: true },
+    { rule: "Trainees benötigen erfahrene Begleitung in jeder Schicht", critical: true },
+    { rule: "Mitarbeiter, die nicht alleine arbeiten können, müssen Begleitung haben", critical: true },
+    { rule: "Vertragslimits: Klein=1 Schicht/Woche, Groß=2 Schichten/Woche", critical: true },
+    { rule: "Manager werden automatisch ihren bevorzugten Schichten zugewiesen", critical: false }
+  ];
 
-  const algorithmStages = [
+  const schedulingStages = [
     {
-      title: "📊 Phase A: Reguläre Mitarbeiterplanung",
-      description: "Zuweisung aller Mitarbeiter außer Manager",
-      steps: [
-        "Grundabdeckung: Mindestens 1 Mitarbeiter pro Schicht",
-        "Erfahrene Mitarbeiter werden bevorzugt",
-        "Verhindere 'Neu allein' Situationen",
-        "Fülle Schichten bis zur Zielbesetzung"
-      ],
-      color: "#3498db"
+      title: "1. Verfügbarkeitsprüfung",
+      description: "Nur Mitarbeiter, die sich für Schichten eingetragen haben (Verfügbarkeit 1 oder 2), werden berücksichtigt."
     },
     {
-      title: "👑 Phase B: Manager-Einfügung",
-      description: "Manager wird seinen bevorzugten Schichten zugewiesen",
-      steps: [
-        "Manager wird festen Schichten zugewiesen",
-        "Erfahrene Mitarbeiter werden zu Manager-Schichten hinzugefügt",
-        "Bei Problemen: Austausch oder Bewegung von Mitarbeitern",
-        "Fallback: Nicht-erfahrene als Backup"
-      ],
-      color: "#e74c3c"
+      title: "2. Modellaufbau",
+      description: "Das System erstellt ein mathematisches Modell mit allen Variablen und Constraints."
     },
     {
-      title: "🔧 Phase C: Reparatur & Validierung",
-      description: "Probleme erkennen und automatisch beheben",
-      steps: [
-        "Überbesetzte erfahrene Mitarbeiter identifizieren",
-        "Mitarbeiter-Pool für Neuverteilung erstellen",
-        "Priorisierte Zuweisung zu Problem-Schichten",
-        "Finale Validierung aller Geschäftsregeln"
-      ],
-      color: "#2ecc71"
+      title: "3. CP-SAT Optimierung", 
+      description: "Google's Constraint Programming Solver findet die beste Zuordnung unter allen Regeln."
     },
     {
-      title: "✅ Finale Prüfung",
-      description: "Zusammenfassung und Freigabe",
-      steps: [
-        "Reparatur-Bericht generieren",
-        "Kritische vs. nicht-kritische Probleme klassifizieren",
-        "Veröffentlichungsstatus bestimmen",
-        "Benutzerfreundliche Zusammenfassung anzeigen"
-      ],
-      color: "#f39c12"
+      title: "4. Manager-Zuweisung",
+      description: "Manager werden automatisch ihren Wunschschichten (Verfügbarkeit 1) zugeordnet."
+    },
+    {
+      title: "5. Validierung",
+      description: "Die Lösung wird auf Regelverletzungen geprüft und ein Bericht generiert."
     }
   ];
 
-  const businessRules = [
-    { rule: "Manager darf nicht allein arbeiten", critical: true },
-    { rule: "Erfahrene mit canWorkAlone: false dürfen nicht allein arbeiten", critical: true },
-    { rule: "Keine leeren Schichten", critical: true },
-    { rule: "Keine 'Neu allein' Situationen", critical: true },
-    { rule: "Manager sollte mit erfahrenem Mitarbeiter arbeiten", critical: false },
-    { rule: "Vertragslimits einhalten", critical: true },
-    { rule: "Nicht zu viele erfahrene Mitarbeiter in einer Schicht", critical: false }
+  const preferenceLevels = [
+    { level: 1, label: "Bevorzugt", description: "Mitarbeiter möchte diese Schicht unbedingt arbeiten", color: "#27ae60" },
+    { level: 2, label: "Verfügbar", description: "Mitarbeiter ist verfügbar für diese Schicht", color: "#f39c12" },
+    { level: 3, label: "Nicht verfügbar", description: "Mitarbeiter kann diese Schicht nicht arbeiten", color: "#e74c3c" }
   ];
 
-  useEffect(() => {
-    const interval = setInterval(() => {
-      if (isAnimating) {
-        setCurrentStage((prev) => (prev + 1) % algorithmStages.length);
-      }
-    }, 3000);
-
-    return () => clearInterval(interval);
-  }, [isAnimating]);
-
-  const toggleAnimation = () => {
-    setIsAnimating(!isAnimating);
-  };
-
   return (
     <div style={{ padding: '20px', maxWidth: '1200px', margin: '0 auto' }}>
       <h1>❓ Hilfe & Support - Scheduling Algorithmus</h1>
@@ -89,7 +54,7 @@ const Help: React.FC = () => {
         boxShadow: '0 4px 6px rgba(0,0,0,0.1)',
         border: '1px solid #e0e0e0'
       }}>
-        <h2 style={{ color: '#2c3e50', marginBottom: '20px' }}>📋 Validierungs Regeln</h2>
+        <h2 style={{ color: '#2c3e50', marginBottom: '20px' }}>📋 Geschäftsregeln</h2>
         <div style={{ display: 'grid', gap: '10px' }}>
           {businessRules.map((rule, index) => (
             <div
@@ -120,14 +85,14 @@ const Help: React.FC = () => {
                 color: rule.critical ? '#e74c3c' : '#f39c12',
                 fontWeight: 'bold'
               }}>
-                {rule.critical ? 'KRITISCH' : 'WARNUNG'}
+                {rule.critical ? 'HART' : 'WEICH'}
               </span>
             </div>
           ))}
         </div>
       </div>
 
-      {/* Algorithm Explanation */}
+      {/* Scheduling Process */}
       <div style={{ 
         backgroundColor: 'white', 
         borderRadius: '12px', 
@@ -136,45 +101,125 @@ const Help: React.FC = () => {
         boxShadow: '0 4px 6px rgba(0,0,0,0.1)',
         border: '1px solid #e0e0e0'
       }}>
-        <h2 style={{ color: '#2c3e50', marginBottom: '20px' }}>🎯 Wie der Algorithmus funktioniert</h2>
+        <h2 style={{ color: '#2c3e50', marginBottom: '20px' }}>⚙️ Scheduling-Prozess</h2>
         
-        <div style={{ display: 'grid', gridTemplateColumns: 'repeat(auto-fit, minmax(300px, 1fr))', gap: '20px' }}>
-          <div>
-            <h4 style={{ color: '#3498db' }}>🏗️ Phasen-basierter Ansatz</h4>
-            <p>Der Algorithmus arbeitet in klar definierten Phasen, um komplexe Probleme schrittweise zu lösen und Stabilität zu gewährleisten.</p>
-          </div>
-        </div>        
+        <div style={{ display: 'grid', gap: '15px' }}>
+          {schedulingStages.map((stage, index) => (
+            <div key={index} style={{
+              padding: '20px',
+              backgroundColor: '#f8f9fa',
+              borderRadius: '8px',
+              border: '2px solid #e9ecef',
+              display: 'flex',
+              alignItems: 'flex-start'
+            }}>
+              <div style={{
+                backgroundColor: '#3498db',
+                color: 'white',
+                borderRadius: '50%',
+                width: '30px',
+                height: '30px',
+                display: 'flex',
+                alignItems: 'center',
+                justifyContent: 'center',
+                fontWeight: 'bold',
+                marginRight: '15px',
+                flexShrink: 0
+              }}>
+                {index + 1}
+              </div>
+              <div>
+                <h4 style={{ color: '#2c3e50', margin: '0 0 8px 0' }}>{stage.title}</h4>
+                <p style={{ color: '#6c757d', margin: 0 }}>{stage.description}</p>
+              </div>
+            </div>
+          ))}
+        </div>
       </div>
 
+      {/* Preference Levels */}
       <div style={{ 
-          marginTop: '25px',
-          padding: '20px',
-          backgroundColor: '#e8f4fd',
-          borderRadius: '8px',
-          border: '1px solid #b8d4f0'
-        }}>
-          <h4 style={{ color: '#2980b9', marginTop: 0 }}>💡 Tipps für beste Ergebnisse</h4>
-          <ul style={{ margin: 0, paddingLeft: '20px' }}>
-            <li>Stellen Sie sicher, dass alle Mitarbeiter ihre Verfügbarkeit eingetragen haben</li>
-            <li>Überprüfen Sie die Vertragstypen (klein = 1 Schicht/Woche, groß = 2 Schichten/Woche)</li>
-            <li>Markieren Sie erfahrene Mitarbeiter, die alleine arbeiten können</li>
-            <li>Planen Sie Manager-Verfügbarkeit im Voraus</li>
-          </ul>
-        </div>
-
-      <style>{`
-        @keyframes pulse {
-          0% { transform: scale(1); }
-          50% { transform: scale(1.02); }
-          100% { transform: scale(1); }
-        }
+        backgroundColor: 'white', 
+        borderRadius: '12px', 
+        padding: '30px', 
+        marginTop: '20px',
+        boxShadow: '0 4px 6px rgba(0,0,0,0.1)',
+        border: '1px solid #e0e0e0'
+      }}>
+        <h2 style={{ color: '#2c3e50', marginBottom: '20px' }}>🎯 Verfügbarkeits-Level</h2>
         
-        @keyframes glow {
-          0% { box-shadow: 0 0 5px rgba(52, 152, 219, 0.5); }
-          50% { box-shadow: 0 0 20px rgba(52, 152, 219, 0.8); }
-          100% { box-shadow: 0 0 5px rgba(52, 152, 219, 0.5); }
-        }
-      `}</style>
+        <div style={{ display: 'grid', gap: '12px' }}>
+          {preferenceLevels.map((pref) => (
+            <div key={pref.level} style={{
+              padding: '15px',
+              backgroundColor: `${pref.color}15`,
+              border: `2px solid ${pref.color}`,
+              borderRadius: '8px',
+              display: 'flex',
+              alignItems: 'center'
+            }}>
+              <div style={{
+                backgroundColor: pref.color,
+                color: 'white',
+                borderRadius: '6px',
+                padding: '8px 12px',
+                fontWeight: 'bold',
+                marginRight: '15px',
+                minWidth: '120px',
+                textAlign: 'center'
+              }}>
+                Level {pref.level}: {pref.label}
+              </div>
+              <span style={{ color: '#2c3e50' }}>{pref.description}</span>
+            </div>
+          ))}
+        </div>
+      </div>
+
+      {/* Tips */}
+      <div style={{ 
+        marginTop: '25px',
+        padding: '25px',
+        backgroundColor: '#e8f4fd',
+        borderRadius: '12px',
+        border: '2px solid #b8d4f0'
+      }}>
+        <h3 style={{ color: '#2980b9', marginTop: 0 }}>💡 Best Practices für erfolgreiches Scheduling</h3>
+        <div style={{ display: 'grid', gridTemplateColumns: 'repeat(auto-fit, minmax(300px, 1fr))', gap: '15px', marginTop: '15px' }}>
+          <div>
+            <h4 style={{ color: '#2980b9' }}>Vor dem Scheduling</h4>
+            <ul style={{ margin: 0, paddingLeft: '20px', color: '#2c3e50' }}>
+              <li>Stellen Sie sicher, dass alle Mitarbeiter ihre Verfügbarkeit eingetragen haben</li>
+              <li>Überprüfen Sie die Mitarbeiterprofile (Trainee/Erfahren, Alleinarbeit möglich)</li>
+              <li>Bestätigen Sie die Vertragstypen und Schichtanforderungen</li>
+            </ul>
+          </div>
+          <div>
+            <h4 style={{ color: '#2980b9' }}>Nach dem Scheduling</h4>
+            <ul style={{ margin: 0, paddingLeft: '20px', color: '#2c3e50' }}>
+              <li>Prüfen Sie den Lösungsbericht auf Verletzungen</li>
+              <li>Kontrollieren Sie unterbesetzte Schichten</li>
+              <li>Validieren Sie Trainee-Betreuung und Alleinarbeits-Regeln</li>
+            </ul>
+          </div>
+        </div>
+      </div>
+
+      {/* Technical Info */}
+      <div style={{ 
+        marginTop: '25px',
+        padding: '20px',
+        backgroundColor: '#fff3cd',
+        borderRadius: '8px',
+        border: '1px solid #ffeaa7'
+      }}>
+        <h4 style={{ color: '#856404', marginTop: 0 }}>🔧 Technische Informationen</h4>
+        <p style={{ color: '#856404', margin: 0 }}>
+          <strong>Lösungsalgorithmus:</strong> Google OR-Tools CP-SAT Solver • 
+          <strong> Fallback:</strong> TypeScript-basierter Solver • 
+          <strong> Maximale Laufzeit:</strong> 105 Sekunden
+        </p>
+      </div>
     </div>
   );
 };

frontend/src/pages/Settings/Settings.tsx

@@ -1,5 +1,5 @@
-// frontend/src/pages/Settings/Settings.tsx
-import React, { useState, useEffect } from 'react';
+// frontend/src/pages/Settings/Settings.tsx - UPDATED WITH NEW STYLES
+import React, { useState, useEffect, useRef } from 'react';
 import { useAuth } from '../../contexts/AuthContext';
 import { employeeService } from '../../services/employeeService';
 import { useNotification } from '../../contexts/NotificationContext';
@@ -27,6 +27,16 @@ const Settings: React.FC = () => {
     confirmPassword: ''
   });
 
+  // Password visibility states
+  const [showCurrentPassword, setShowCurrentPassword] = useState(false);
+  const [showNewPassword, setShowNewPassword] = useState(false);
+  const [showConfirmPassword, setShowConfirmPassword] = useState(false);
+
+  // Refs for timeout management
+  const currentPasswordTimeoutRef = useRef<NodeJS.Timeout | null>(null);
+  const newPasswordTimeoutRef = useRef<NodeJS.Timeout | null>(null);
+  const confirmPasswordTimeoutRef = useRef<NodeJS.Timeout | null>(null);
+
   useEffect(() => {
     if (currentUser) {
       setProfileForm({
@@ -36,6 +46,17 @@ const Settings: React.FC = () => {
     }
   }, [currentUser]);
 
+  // Cleanup timeouts on unmount
+  useEffect(() => {
+    return () => {
+      [currentPasswordTimeoutRef, newPasswordTimeoutRef, confirmPasswordTimeoutRef].forEach(ref => {
+        if (ref.current) {
+          clearTimeout(ref.current);
+        }
+      });
+    };
+  }, []);
+
   const handleProfileChange = (e: React.ChangeEvent<HTMLInputElement>) => {
     const { name, value } = e.target;
     setProfileForm(prev => ({
@@ -52,6 +73,67 @@ const Settings: React.FC = () => {
     }));
   };
 
+  // Password visibility handlers for current password
+  const handleCurrentPasswordMouseDown = () => {
+    currentPasswordTimeoutRef.current = setTimeout(() => {
+      setShowCurrentPassword(true);
+    }, 300);
+  };
+
+  const handleCurrentPasswordMouseUp = () => {
+    if (currentPasswordTimeoutRef.current) {
+      clearTimeout(currentPasswordTimeoutRef.current);
+      currentPasswordTimeoutRef.current = null;
+    }
+    setShowCurrentPassword(false);
+  };
+
+  // Password visibility handlers for new password
+  const handleNewPasswordMouseDown = () => {
+    newPasswordTimeoutRef.current = setTimeout(() => {
+      setShowNewPassword(true);
+    }, 300);
+  };
+
+  const handleNewPasswordMouseUp = () => {
+    if (newPasswordTimeoutRef.current) {
+      clearTimeout(newPasswordTimeoutRef.current);
+      newPasswordTimeoutRef.current = null;
+    }
+    setShowNewPassword(false);
+  };
+
+  // Password visibility handlers for confirm password
+  const handleConfirmPasswordMouseDown = () => {
+    confirmPasswordTimeoutRef.current = setTimeout(() => {
+      setShowConfirmPassword(true);
+    }, 300);
+  };
+
+  const handleConfirmPasswordMouseUp = () => {
+    if (confirmPasswordTimeoutRef.current) {
+      clearTimeout(confirmPasswordTimeoutRef.current);
+      confirmPasswordTimeoutRef.current = null;
+    }
+    setShowConfirmPassword(false);
+  };
+
+  // Touch event handlers
+  const handleTouchStart = (setter: () => void) => (e: React.TouchEvent) => {
+    e.preventDefault();
+    setter();
+  };
+
+  const handleTouchEnd = (cleanup: () => void) => (e: React.TouchEvent) => {
+    e.preventDefault();
+    cleanup();
+  };
+
+  // Prevent context menu
+  const handleContextMenu = (e: React.MouseEvent) => {
+    e.preventDefault();
+  };
+
   const handleProfileUpdate = async (e: React.FormEvent) => {
     e.preventDefault();
     if (!currentUser) return;
@@ -180,11 +262,6 @@ const Settings: React.FC = () => {
     );
   }
 
-  // Get full name for display
-  const getFullName = () => {
-    return `${currentUser.firstname || ''} ${currentUser.lastname || ''}`.trim();
-  };
-
   return (
     <div style={styles.container}>
       {/* Left Sidebar with Tabs */}
@@ -443,77 +520,137 @@ const Settings: React.FC = () => {
             
             <form onSubmit={handlePasswordUpdate} style={{ marginTop: '2rem' }}>
               <div style={styles.formGridCompact}>
+                {/* Current Password Field */}
                 <div style={styles.field}>
                   <label style={styles.fieldLabel}>
                     Aktuelles Passwort *
                   </label>
-                  <input
-                    type="password"
-                    name="currentPassword"
-                    value={passwordForm.currentPassword}
-                    onChange={handlePasswordChange}
-                    required
-                    style={styles.fieldInput}
-                    placeholder="Aktuelles Passwort"
-                    onFocus={(e) => {
-                      e.target.style.borderColor = '#1a1325';
-                      e.target.style.boxShadow = '0 0 0 3px rgba(26, 19, 37, 0.1)';
-                    }}
-                    onBlur={(e) => {
-                      e.target.style.borderColor = '#e8e8e8';
-                      e.target.style.boxShadow = 'none';
-                    }}
-                  />
+                  <div style={styles.fieldInputContainer}>
+                    <input
+                      type={showCurrentPassword ? 'text' : 'password'}
+                      name="currentPassword"
+                      value={passwordForm.currentPassword}
+                      onChange={handlePasswordChange}
+                      required
+                      style={styles.fieldInputWithIcon}
+                      placeholder="Aktuelles Passwort"
+                      onFocus={(e) => {
+                        e.target.style.borderColor = '#1a1325';
+                        e.target.style.boxShadow = '0 0 0 3px rgba(26, 19, 37, 0.1)';
+                      }}
+                      onBlur={(e) => {
+                        e.target.style.borderColor = '#e8e8e8';
+                        e.target.style.boxShadow = 'none';
+                      }}
+                    />
+                    <button
+                      type="button"
+                      onMouseDown={handleCurrentPasswordMouseDown}
+                      onMouseUp={handleCurrentPasswordMouseUp}
+                      onMouseLeave={handleCurrentPasswordMouseUp}
+                      onTouchStart={handleTouchStart(handleCurrentPasswordMouseDown)}
+                      onTouchEnd={handleTouchEnd(handleCurrentPasswordMouseUp)}
+                      onTouchCancel={handleTouchEnd(handleCurrentPasswordMouseUp)}
+                      onContextMenu={handleContextMenu}
+                      style={{
+                        ...styles.passwordToggleButton,
+                        backgroundColor: showCurrentPassword ? 'rgba(26, 19, 37, 0.1)' : 'transparent'
+                      }}
+                      title="Gedrückt halten zum Anzeigen des Passworts"
+                    >
+                      {showCurrentPassword ? '👁' : '👁'}
+                    </button>
+                  </div>
                 </div>
 
+                {/* New Password Field */}
                 <div style={styles.field}>
                   <label style={styles.fieldLabel}>
                     Neues Passwort *
                   </label>
-                  <input
-                    type="password"
-                    name="newPassword"
-                    value={passwordForm.newPassword}
-                    onChange={handlePasswordChange}
-                    required
-                    minLength={6}
-                    style={styles.fieldInput}
-                    placeholder="Mindestens 6 Zeichen"
-                    onFocus={(e) => {
-                      e.target.style.borderColor = '#1a1325';
-                      e.target.style.boxShadow = '0 0 0 3px rgba(26, 19, 37, 0.1)';
-                    }}
-                    onBlur={(e) => {
-                      e.target.style.borderColor = '#e8e8e8';
-                      e.target.style.boxShadow = 'none';
-                    }}
-                  />
+                  <div style={styles.fieldInputContainer}>
+                    <input
+                      type={showNewPassword ? 'text' : 'password'}
+                      name="newPassword"
+                      value={passwordForm.newPassword}
+                      onChange={handlePasswordChange}
+                      required
+                      minLength={6}
+                      style={styles.fieldInputWithIcon}
+                      placeholder="Mindestens 6 Zeichen"
+                      onFocus={(e) => {
+                        e.target.style.borderColor = '#1a1325';
+                        e.target.style.boxShadow = '0 0 0 3px rgba(26, 19, 37, 0.1)';
+                      }}
+                      onBlur={(e) => {
+                        e.target.style.borderColor = '#e8e8e8';
+                        e.target.style.boxShadow = 'none';
+                      }}
+                    />
+                    <button
+                      type="button"
+                      onMouseDown={handleNewPasswordMouseDown}
+                      onMouseUp={handleNewPasswordMouseUp}
+                      onMouseLeave={handleNewPasswordMouseUp}
+                      onTouchStart={handleTouchStart(handleNewPasswordMouseDown)}
+                      onTouchEnd={handleTouchEnd(handleNewPasswordMouseUp)}
+                      onTouchCancel={handleTouchEnd(handleNewPasswordMouseUp)}
+                      onContextMenu={handleContextMenu}
+                      style={{
+                        ...styles.passwordToggleButton,
+                        backgroundColor: showNewPassword ? 'rgba(26, 19, 37, 0.1)' : 'transparent'
+                      }}
+                      title="Gedrückt halten zum Anzeigen des Passworts"
+                    >
+                      {showNewPassword ? '👁' : '👁'}
+                    </button>
+                  </div>
                   <div style={styles.fieldHint}>
                     Das Passwort muss mindestens 6 Zeichen lang sein.
                   </div>
                 </div>
 
+                {/* Confirm Password Field */}
                 <div style={styles.field}>
                   <label style={styles.fieldLabel}>
                     Neues Passwort bestätigen *
                   </label>
-                  <input
-                    type="password"
-                    name="confirmPassword"
-                    value={passwordForm.confirmPassword}
-                    onChange={handlePasswordChange}
-                    required
-                    style={styles.fieldInput}
-                    placeholder="Passwort wiederholen"
-                    onFocus={(e) => {
-                      e.target.style.borderColor = '#1a1325';
-                      e.target.style.boxShadow = '0 0 0 3px rgba(26, 19, 37, 0.1)';
-                    }}
-                    onBlur={(e) => {
-                      e.target.style.borderColor = '#e8e8e8';
-                      e.target.style.boxShadow = 'none';
-                    }}
-                  />
+                  <div style={styles.fieldInputContainer}>
+                    <input
+                      type={showConfirmPassword ? 'text' : 'password'}
+                      name="confirmPassword"
+                      value={passwordForm.confirmPassword}
+                      onChange={handlePasswordChange}
+                      required
+                      style={styles.fieldInputWithIcon}
+                      placeholder="Passwort wiederholen"
+                      onFocus={(e) => {
+                        e.target.style.borderColor = '#1a1325';
+                        e.target.style.boxShadow = '0 0 0 3px rgba(26, 19, 37, 0.1)';
+                      }}
+                      onBlur={(e) => {
+                        e.target.style.borderColor = '#e8e8e8';
+                        e.target.style.boxShadow = 'none';
+                      }}
+                    />
+                    <button
+                      type="button"
+                      onMouseDown={handleConfirmPasswordMouseDown}
+                      onMouseUp={handleConfirmPasswordMouseUp}
+                      onMouseLeave={handleConfirmPasswordMouseUp}
+                      onTouchStart={handleTouchStart(handleConfirmPasswordMouseDown)}
+                      onTouchEnd={handleTouchEnd(handleConfirmPasswordMouseUp)}
+                      onTouchCancel={handleTouchEnd(handleConfirmPasswordMouseUp)}
+                      onContextMenu={handleContextMenu}
+                      style={{
+                        ...styles.passwordToggleButton,
+                        backgroundColor: showConfirmPassword ? 'rgba(26, 19, 37, 0.1)' : 'transparent'
+                      }}
+                      title="Gedrückt halten zum Anzeigen des Passworts"
+                    >
+                      {showConfirmPassword ? '👁' : '👁'}
+                    </button>
+                  </div>
                 </div>
               </div>
 

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

@@ -1,4 +1,5 @@
-  export const styles = {
+// frontend/src/pages/Settings/type/SettingsType.tsx - CORRECTED
+export const styles = {
     container: {
       display: 'flex',
       minHeight: 'calc(100vh - 120px)',
@@ -121,11 +122,17 @@
       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',
@@ -135,6 +142,20 @@
       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',
@@ -144,11 +165,29 @@
       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',

frontend/src/pages/Setup/Setup.tsx

@@ -2,6 +2,8 @@
 import React, { useState } from 'react';
 import { useAuth } from '../../contexts/AuthContext';
 
+const API_BASE_URL = '/api';
+
 const Setup: React.FC = () => {
   const [step, setStep] = useState(1);
   const [formData, setFormData] = useState({
@@ -73,7 +75,7 @@ const Setup: React.FC = () => {
 
       console.log('🚀 Sending setup request...', payload);
 
-      const response = await fetch('http://localhost:3002/api/setup/admin', {
+      const response = await fetch(`${API_BASE_URL}/setup/admin`, {
         method: 'POST',
         headers: {
           'Content-Type': 'application/json',

frontend/src/services/authService.ts

@@ -1,6 +1,6 @@
 // frontend/src/services/authService.ts
 import { Employee } from '../models/Employee';
-const API_BASE = process.env.REACT_APP_API_BASE_URL || 'http://localhost:3002/api';
+const API_BASE = process.env.REACT_APP_API_BASE_URL || '/api';
 
 export interface LoginRequest {
   email: string;

frontend/src/services/employeeService.ts

@@ -1,7 +1,7 @@
 // frontend/src/services/employeeService.ts
 import { Employee, CreateEmployeeRequest, UpdateEmployeeRequest, EmployeeAvailability } from '../models/Employee';
 
-const API_BASE_URL = 'http://localhost:3002/api';
+const API_BASE_URL = '/api';
 
 const getAuthHeaders = () => {
   const token = localStorage.getItem('token');

frontend/src/services/shiftAssignmentService.ts

@@ -4,9 +4,7 @@ import { Employee, EmployeeAvailability } from '../models/Employee';
 import { authService } from './authService';
 import { AssignmentResult, ScheduleRequest } from '../models/scheduling';
 
-const API_BASE_URL = 'http://localhost:3002/api';
-
-
+const API_BASE_URL = '/api';
 
 // Helper function to get auth headers
 const getAuthHeaders = () => {

frontend/src/services/shiftPlanService.ts

@@ -3,7 +3,7 @@ import { authService } from './authService';
 import { ShiftPlan, CreateShiftPlanRequest, ScheduledShift, CreateShiftFromTemplateRequest } from '../models/ShiftPlan';
 import { TEMPLATE_PRESETS } from '../models/defaults/shiftPlanDefaults';  
 
-const API_BASE = 'http://localhost:3002/api/shift-plans';
+const API_BASE_URL = '/api/shift-plans';
 
 // Helper function to get auth headers
 const getAuthHeaders = () => {
@@ -25,7 +25,7 @@ const handleResponse = async (response: Response) => {
 
 export const shiftPlanService = {
   async getShiftPlans(): Promise<ShiftPlan[]> {
-    const response = await fetch(API_BASE, {
+    const response = await fetch(API_BASE_URL, {
       headers: {
         'Content-Type': 'application/json',
         ...authService.getAuthHeaders()
@@ -50,7 +50,7 @@ export const shiftPlanService = {
   },
 
   async getShiftPlan(id: string): Promise<ShiftPlan> {
-    const response = await fetch(`${API_BASE}/${id}`, {
+    const response = await fetch(`${API_BASE_URL}/${id}`, {
       headers: {
         'Content-Type': 'application/json',
         ...authService.getAuthHeaders()
@@ -69,7 +69,7 @@ export const shiftPlanService = {
   },
 
   async createShiftPlan(plan: CreateShiftPlanRequest): Promise<ShiftPlan> {
-    const response = await fetch(API_BASE, {
+    const response = await fetch(API_BASE_URL, {
       method: 'POST',
       headers: {
         'Content-Type': 'application/json',
@@ -90,7 +90,7 @@ export const shiftPlanService = {
   },
 
   async updateShiftPlan(id: string, plan: Partial<ShiftPlan>): Promise<ShiftPlan> {
-    const response = await fetch(`${API_BASE}/${id}`, {
+    const response = await fetch(`${API_BASE_URL}/${id}`, {
       method: 'PUT',
       headers: {
         'Content-Type': 'application/json',
@@ -111,7 +111,7 @@ export const shiftPlanService = {
   },
 
   async deleteShiftPlan(id: string): Promise<void> {
-    const response = await fetch(`${API_BASE}/${id}`, {
+    const response = await fetch(`${API_BASE_URL}/${id}`, {
       method: 'DELETE',
       headers: {
         'Content-Type': 'application/json',
@@ -130,7 +130,7 @@ export const shiftPlanService = {
 
   // Get specific template or plan
   getTemplate: async (id: string): Promise<ShiftPlan> => {
-    const response = await fetch(`${API_BASE}/${id}`, {
+    const response = await fetch(`${API_BASE_URL}/${id}`, {
       headers: getAuthHeaders()
     });
     return handleResponse(response);
@@ -142,7 +142,7 @@ export const shiftPlanService = {
         console.log('🔄 Attempting to regenerate scheduled shifts...');
         
         // You'll need to add this API endpoint to your backend
-        const response = await fetch(`${API_BASE}/${planId}/regenerate-shifts`, {
+        const response = await fetch(`${API_BASE_URL}/${planId}/regenerate-shifts`, {
         method: 'POST',
         headers: {
             'Content-Type': 'application/json',
@@ -162,7 +162,7 @@ export const shiftPlanService = {
 
   // Create new plan
   createPlan: async (data: CreateShiftPlanRequest): Promise<ShiftPlan> => {
-    const response = await fetch(`${API_BASE}`, {
+    const response = await fetch(`${API_BASE_URL}`, {
       method: 'POST',
       headers: getAuthHeaders(),
       body: JSON.stringify(data),
@@ -177,7 +177,7 @@ export const shiftPlanService = {
     endDate: string;
     isTemplate?: boolean;
   }): Promise<ShiftPlan> => {
-    const response = await fetch(`${API_BASE}/from-preset`, {
+    const response = await fetch(`${API_BASE_URL}/from-preset`, {
       method: 'POST',
       headers: getAuthHeaders(),
       body: JSON.stringify(data),
@@ -204,7 +204,7 @@ export const shiftPlanService = {
     try {
       console.log('🔄 Clearing assignments for plan:', planId);
       
-      const response = await fetch(`${API_BASE}/${planId}/clear-assignments`, {
+      const response = await fetch(`${API_BASE_URL}/${planId}/clear-assignments`, {
         method: 'POST',
         headers: {
           'Content-Type': 'application/json',

frontend/tsconfig.json

@@ -7,7 +7,6 @@
       "esnext"
     ],
     "allowJs": true,
-    "skipLibCheck": true,
     "esModuleInterop": true,
     "allowSyntheticDefaultImports": true,
     "strict": true,
@@ -25,4 +24,4 @@
   "include": [
     "src"
   ]
-}
+}

package-lock.json

@@ -1,6 +0,0 @@
-{
-  "name": "Schichtenplaner",
-  "lockfileVersion": 3,
-  "requires": true,
-  "packages": {}
-}