concepts updated

reviews/20260111 doc_session_handling_analysis.md

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+# Session Handling Analysis for Horizontal Scaling
+
+## Executive Summary
+
+**✅ YES, your application is STATELESS and ready for horizontal scaling with load balancers.**
+
+The session handling architecture is designed to work across multiple gateway instances without requiring sticky sessions or shared in-memory storage. Users will **NOT** lose their sessions when API calls hit different gateway instances.
+
+---
+
+## Architecture Overview
+
+### Backend Session Management (Gateway)
+
+#### 1. **JWT Token-Based Authentication**
+- **Location**: `gateway/modules/auth/authentication.py`
+- **Token Storage**: JWT tokens are stored in **httpOnly cookies** (`auth_token` and `refresh_token`)
+- **Token Format**: Self-contained JWT tokens with claims including:
+  - `sub` (username)
+  - `userId`
+  - `mandateId`
+  - `jti` (token ID)
+  - `sid` (session ID)
+  - `authenticationAuthority`
+  - `exp` (expiration)
+
+#### 2. **Database-Backed Token Validation**
+- **Location**: `gateway/modules/interfaces/interfaceDbAppObjects.py`
+- **Token Table**: All tokens are stored in a `Token` database table with fields:
+  - `id` (jti - token ID)
+  - `userId`
+  - `authority`
+  - `sessionId`
+  - `mandateId`
+  - `status` (ACTIVE/REVOKED)
+  - `expiresAt`
+  - `revokedAt`, `revokedBy`, `reason`
+
+- **Validation Process** (per request):
+  1. JWT token is extracted from httpOnly cookie or Authorization header
+  2. Token is decoded and validated (signature, expiration)
+  3. Token ID (`jti`) is extracted from the JWT payload
+  4. **Database query** is performed to verify:
+     - Token exists in database
+     - Token status is ACTIVE
+     - Token matches user, session, and mandate context
+  5. User is retrieved from database based on token claims
+
+**Key Code Reference** (`gateway/modules/auth/authentication.py:141-191`):
+```python
+# For LOCAL gateway JWTs, enforce DB-backed token validity and revocation
+if tokenId:
+    db_tokens = dbApp.getRecordset(Token, recordFilter={"id": tokenId})
+    
+if db_tokens:
+    db_token = db_tokens[0]
+    token_authority = str(db_token.get("authority", "")).lower()
+    if token_authority == str(AuthAuthority.LOCAL.value):
+        # Must be active and match user/session/mandate
+        active_token = appInterface.findActiveTokenById(
+            tokenId=tokenId,
+            userId=user.id,
+            authority=AuthAuthority.LOCAL,
+            sessionId=sessionId,
+            mandateId=str(mandateId) if mandateId else None,
+        )
+        if not active_token:
+            raise credentialsException
+```
+
+#### 3. **No In-Memory Session Storage**
+- ✅ **No Redis** - No Redis or similar caching layer found
+- ✅ **No Memcached** - No memcached usage found
+- ✅ **No In-Memory Sessions** - All session state is in the database
+- ✅ **Stateless Design** - Each request is independently validated
+
+#### 4. **Session Management**
+- **Session ID**: Generated on login (`uuid.uuid4()`) and stored in:
+  - JWT token claim (`sid`)
+  - Token database record (`sessionId`)
+- **Logout**: Revokes all tokens for a session by updating database records (sets `status=REVOKED`)
+- **Token Refresh**: Creates new tokens and stores them in database
+
+**Key Code Reference** (`gateway/modules/routes/routeSecurityLocal.py:92-131`):
+```python
+# Create session id and include in token claims for session-scoped logout
+session_id = str(uuid.uuid4())
+token_data["sid"] = session_id
+
+# Create access token + set cookie
+access_token, _access_expires = createAccessToken(token_data)
+setAccessTokenCookie(response, access_token)
+
+# Save access token to database
+token = Token(
+    id=jti,
+    userId=user.id,
+    authority=AuthAuthority.LOCAL,
+    tokenAccess=access_token,
+    tokenType="bearer",
+    expiresAt=expires_at.timestamp(),
+    sessionId=session_id,
+    mandateId=str(user.mandateId)
+)
+userInterface.saveAccessToken(token)
+```
+
+### Frontend Session Management
+
+#### 1. **Cookie-Based Token Storage**
+- **Location**: `frontend_agents/public/js/security/auth.js` and `frontend_agents/public/js/shared/apiCalls.js`
+- **Storage Method**: Tokens are stored in **httpOnly cookies** (not localStorage or sessionStorage)
+- **Automatic Transmission**: Cookies are automatically sent with requests using `credentials: 'include'`
+
+**Key Code Reference** (`frontend_agents/public/js/shared/apiCalls.js:151-153`):
+```javascript
+// Note: With httpOnly cookies, we don't need to manually add Authorization header
+// The browser automatically includes cookies with credentials: 'include'
+```
+
+#### 2. **CSRF Token Storage**
+- **Location**: `sessionStorage` (client-side only)
+- **Purpose**: CSRF protection, not session state
+- **Note**: CSRF tokens can be regenerated if lost, so this doesn't affect session persistence
+
+---
+
+## Horizontal Scaling Compatibility
+
+### ✅ **Fully Compatible - No Issues**
+
+#### Why It Works:
+
+1. **Stateless Backend**
+   - Each gateway instance validates tokens independently
+   - No shared in-memory state between instances
+   - All state is in the shared database
+
+2. **Database as Single Source of Truth**
+   - Token validation queries the database on every request
+   - Token revocation updates the database
+   - All instances see the same token state
+
+3. **Cookie-Based Tokens**
+   - Cookies are sent by the browser to whichever instance handles the request
+   - No server-side session storage needed
+   - Load balancer doesn't need sticky sessions
+
+4. **JWT Self-Contained Claims**
+   - Token contains all necessary user context
+   - Database validation ensures token hasn't been revoked
+   - No need to look up session state from another instance
+
+### Load Balancer Configuration
+
+**Recommended Settings:**
+- ✅ **Session Affinity**: **NOT REQUIRED** (can use round-robin or least-connections)
+- ✅ **Health Checks**: Standard HTTP health checks
+- ✅ **Cookie Handling**: No special configuration needed (browser handles cookies automatically)
+
+### Potential Considerations
+
+#### 1. **Database Connection Pooling**
+- Ensure each gateway instance has proper database connection pooling
+- Database should handle concurrent connections from multiple instances
+- **Status**: ✅ Should work fine if database is configured for multiple connections
+
+#### 2. **CSRF Token Regeneration**
+- CSRF tokens stored in `sessionStorage` may be lost if user switches instances
+- **Impact**: Minimal - CSRF tokens are regenerated automatically
+- **Code Reference**: `frontend_agents/public/js/shared/apiCalls.js:186-203` handles CSRF token generation
+
+#### 3. **Token Refresh Race Conditions**
+- If multiple requests refresh tokens simultaneously, ensure database handles concurrent updates
+- **Status**: ✅ Current implementation uses database transactions (via `saveAccessToken`)
+
+#### 4. **Cookie Domain and Path**
+- Ensure cookies are set with correct domain/path for load balancer
+- **Current Settings** (`gateway/modules/auth/jwtService.py:58-66`):
+  - `path="/"` ✅
+  - `samesite="strict"` ✅
+  - `httponly=True` ✅
+  - `secure` (based on HTTPS) ✅
+
+---
+
+## Testing Recommendations
+
+### 1. **Multi-Instance Test**
+- Deploy 2+ gateway instances behind a load balancer
+- Login on one instance
+- Make requests that hit different instances
+- Verify session persists across instances
+
+### 2. **Token Revocation Test**
+- Login on instance A
+- Logout on instance B
+- Verify token is revoked (cannot make requests on instance A)
+
+### 3. **Concurrent Request Test**
+- Make multiple simultaneous requests
+- Verify all requests succeed regardless of which instance handles them
+
+### 4. **Database Connection Test**
+- Monitor database connections from multiple instances
+- Verify connection pooling works correctly
+- Check for connection leaks
+
+---
+
+## Summary
+
+| Aspect | Status | Notes |
+|--------|--------|-------|
+| **Stateless Backend** | ✅ YES | No in-memory session storage |
+| **Database-Backed** | ✅ YES | All token state in database |
+| **Cookie-Based** | ✅ YES | httpOnly cookies, auto-sent by browser |
+| **Load Balancer Ready** | ✅ YES | No sticky sessions needed |
+| **Horizontal Scaling** | ✅ READY | Can scale to multiple instances |
+
+### Conclusion
+
+**Your application is fully ready for horizontal scaling.** The session handling architecture is stateless and database-backed, which means:
+
+1. ✅ Users will **NOT** lose sessions when requests hit different instances
+2. ✅ Load balancer can use **round-robin** or **least-connections** (no sticky sessions needed)
+3. ✅ Token validation works independently on each instance
+4. ✅ Token revocation works across all instances (via database)
+
+The only shared state is in the database, which you've confirmed will be a single logical instance. This is the correct architecture for horizontal scaling.
+
+---
+
+## Files Analyzed
+
+### Backend
+- `gateway/modules/auth/authentication.py` - Token validation
+- `gateway/modules/auth/jwtService.py` - JWT creation and cookie management
+- `gateway/modules/routes/routeSecurityLocal.py` - Login/logout endpoints
+- `gateway/modules/interfaces/interfaceDbAppObjects.py` - Token database operations
+- `gateway/modules/datamodels/datamodelSecurity.py` - Token data model
+
+### Frontend
+- `frontend_agents/public/js/security/auth.js` - Authentication logic
+- `frontend_agents/public/js/shared/apiCalls.js` - API calls with cookie handling
+
+---
+
+*Analysis Date: 2025-01-27*
+*Analyzed by: AI Assistant*

reviews/20260111 doc_session_handling_summary_operations.md

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+# PowerOn Gateway - Session Handling for Horizontal Scaling
+
+## Executive Summary
+
+**Status: ✅ READY FOR HORIZONTAL SCALING**
+
+The PowerOn Gateway uses a stateless, database-backed session architecture that supports horizontal scaling with load balancers. User sessions persist across multiple gateway instances without requiring sticky sessions or shared in-memory storage.
+
+---
+
+## Architecture Overview
+
+### Session Management Approach
+
+**Authentication Method**: JWT tokens stored in httpOnly cookies
+- Access token: `auth_token` cookie
+- Refresh token: `refresh_token` cookie
+- Tokens contain user context (userId, mandateId, sessionId)
+
+**Token Validation**: Database-backed
+- All tokens stored in `Token` database table
+- Each request validates token against database
+- Token status: ACTIVE or REVOKED
+- No in-memory session storage (no Redis/Memcached)
+
+**Key Characteristics**:
+- ✅ Stateless backend design
+- ✅ Database as single source of truth
+- ✅ Cookie-based token transmission
+- ✅ Independent token validation per instance
+
+---
+
+## Load Balancer Configuration
+
+### Recommended Settings
+
+| Setting | Value | Notes |
+|---------|-------|-------|
+| **Session Affinity** | **NOT REQUIRED** | Can use round-robin or least-connections |
+| **Health Checks** | Standard HTTP | Standard endpoint health checks |
+| **Cookie Handling** | Default | Browser handles cookies automatically |
+| **Sticky Sessions** | **NOT NEEDED** | Gateway instances are stateless |
+
+### Cookie Configuration
+
+Current cookie settings (configured in code):
+- `path="/"` - Available across all paths
+- `samesite="strict"` - CSRF protection
+- `httponly=True` - XSS protection
+- `secure` - Enabled when using HTTPS
+
+**No special load balancer cookie configuration required.**
+
+---
+
+## Deployment Requirements
+
+### Database Configuration
+
+**Requirements for Logical Database**:
+- Single logical database instance (shared across all gateway instances)
+- Database must be accessible from all gateway instances
+- Database must support concurrent connections from multiple instances
+- Each gateway instance requires proper database connection pooling
+- Database should handle concurrent token validation queries efficiently
+
+**Token Table**: Contains all session state
+- Token ID (jti)
+- User ID, Session ID, Mandate ID
+- Status (ACTIVE/REVOKED)
+- Expiration timestamps
+
+### Gateway Instance Configuration
+
+Each gateway instance:
+- ✅ Operates independently
+- ✅ Validates tokens via database queries
+- ✅ No shared state with other instances
+- ✅ Can be added/removed without affecting active sessions
+
+
+### Key Points for Operations
+
+1. ✅ **No sticky sessions required** - Load balancer can distribute requests freely
+2. ✅ **Shared logical database required** - All instances access the same database
+3. ✅ **Instances are independent** - Can add/remove instances without downtime
+4. ✅ **Sessions persist across instances** - Users won't lose sessions during failover
+
+---
+
+
+*Document prepared for Operations Center*, Patrick Motsch, PowerON AG, 2026-01-11
+

ui_nyla/feature-userregistration/doc_userregistration_ui_adaptations.md

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+# User Registration & Password Reset - UI Adaptations
+
+## Overview
+
+This document describes the necessary UI changes and adaptations required in the Nyla frontend (`frontend_nyla`) to implement the magic link-based user authentication process described in `doc_userauth_process_concept.md`.
+
+**Last Updated**: Based on codebase analysis of current Nyla frontend implementation.
+
+**Frontend Stack**: React 19, TypeScript, Vite, React Router  
+**Pattern**: Hooks-based architecture (`useAuthentication.ts`), component-based pages
+
+## Current Frontend State
+
+### Existing Pages
+
+1. **`src/pages/Register.tsx`**
+   - Contains registration form with:
+     - Username field (with availability check)
+     - Password field (required)
+     - Confirm password field (required)
+     - Email field
+     - Full name field
+     - Language selector (defaults to 'de')
+   - Uses `useRegister()` hook from `useAuthentication.ts`
+   - **Needs modification**: Remove password fields, add email-only registration
+
+2. **`src/pages/Login.tsx`**
+   - Contains login form with:
+     - Username field
+     - Password field
+     - Microsoft authentication button
+     - Google authentication button (placeholder)
+     - Registration link
+   - **Missing**: Password reset button/link
+
+3. **`src/hooks/useAuthentication.ts`**
+   - Contains `useRegister()` hook that sends password
+   - Contains `useAuth()` hook for login
+   - Contains `useUsernameAvailability()` hook
+   - **Needs modification**: Update `useRegister()` to handle no-password registration
+   - **Missing**: Password reset request and reset password hooks
+
+4. **`src/api.ts`**
+   - Axios instance with interceptors
+   - Base URL from environment variables
+   - **No changes needed** - existing API setup is sufficient
+
+## Required UI Changes
+
+### 1. Login Page (`src/pages/Login.tsx`)
+
+#### Changes Required:
+- Add "Password Reset" link/button below the login form
+- Link should navigate to `/password-reset-request` route
+- Style should match existing link styles (use `styles.textButton`)
+
+#### Implementation:
+```tsx
+// Add after the disclaimer div, before the login button
+<div className={styles.passwordResetLink}>
+  <button 
+    className={styles.textButton}
+    onClick={() => navigate("/password-reset-request")}
+  >
+    Passwort zurücksetzen
+  </button>
+</div>
+```
+
+#### Styling Considerations:
+- Use existing CSS classes from `Login.module.css`
+- Match styling with registration link
+- Ensure responsive design matches login page layout
+
+### 2. Registration Page (`src/pages/Register.tsx`)
+
+#### Changes Required:
+- **Remove** password and confirm password fields
+- **Keep** username, email, fullName fields
+- Update form validation to not require password
+- Update success message to indicate email will be sent
+- Add spam folder reminder message
+
+#### Implementation Changes:
+
+**Remove password-related state:**
+```tsx
+// Remove these lines:
+const [passwordFocused, setPasswordFocused] = useState(false);
+const [confirmPasswordFocused, setConfirmPasswordFocused] = useState(false);
+
+// Update formData interface:
+interface RegisterFormData {
+  username: string;
+  // password: string; // REMOVED
+  // confirmPassword: string; // REMOVED
+  email: string;
+  fullName: string;
+}
+
+// Update initial state:
+const [formData, setFormData] = useState<RegisterFormData>({
+  username: '',
+  // password: '', // REMOVED
+  // confirmPassword: '', // REMOVED
+  email: '',
+  fullName: ''
+});
+```
+
+**Update validation:**
+```tsx
+const validateForm = (): boolean => {
+  // Remove password checks
+  if (!formData.username || !formData.email || !formData.fullName) {
+    setValidationError('Bitte füllen Sie alle Pflichtfelder aus.');
+    return false;
+  }
+
+  if (!formData.email.includes('@')) {
+    setValidationError('Bitte geben Sie eine gültige E-Mail-Adresse ein.');
+    return false;
+  }
+
+  return true;
+};
+```
+
+**Update success message:**
+```tsx
+// After successful registration:
+await register(registrationData);
+navigate('/login', { 
+  state: { 
+    registered: true,
+    message: 'Registrierung erfolgreich! Bitte prüfen Sie Ihre E-Mail, um Ihr Passwort zu setzen. Falls Sie keine E-Mail erhalten, prüfen Sie bitte auch Ihren Spam-Ordner.' 
+  } 
+});
+```
+
+**Remove password input fields from JSX:**
+```tsx
+// Remove these divs:
+{/* <div className={styles.floatingLabelInput}>
+  <input type="password" name="password" ... />
+  <label>Passwort</label>
+</div>
+<div className={styles.floatingLabelInput}>
+  <input type="password" name="confirmPassword" ... />
+  <label>Passwort bestätigen</label>
+</div> */}
+```
+
+**Add info message:**
+```tsx
+// Add after the disclaimer, before the submit button:
+<div className={styles.infoMessage}>
+  <p>Nach der Registrierung erhalten Sie eine E-Mail mit einem Link zum Setzen Ihres Passworts.</p>
+  <p className={styles.spamReminder}>Bitte prüfen Sie auch Ihren Spam-Ordner, falls Sie keine E-Mail erhalten.</p>
+</div>
+```
+
+### 3. New Page: Password Reset Request (`src/pages/PasswordResetRequest.tsx`)
+
+#### Purpose:
+Allow users to request a password reset by entering their email address.
+
+#### Structure:
+- Similar layout to `Register.tsx` and `Login.tsx`
+- Single email input field
+- Submit button
+- Link back to login page
+- Success/error message area
+
+#### Implementation:
+```tsx
+import { useState, useEffect } from 'react';
+import { useNavigate } from 'react-router-dom';
+import { usePasswordResetRequest } from '../hooks/useAuthentication';
+import styles from './PasswordResetRequest.module.css';
+
+function PasswordResetRequest() {
+  const navigate = useNavigate();
+  const { requestPasswordReset, error, isLoading } = usePasswordResetRequest();
+  const [email, setEmail] = useState('');
+  const [emailFocused, setEmailFocused] = useState(false);
+  const [successMessage, setSuccessMessage] = useState<string | null>(null);
+
+  useEffect(() => {
+    document.title = "PowerOn AI Platform - Passwort zurücksetzen";
+  }, []);
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+    
+    if (!email || !email.includes('@')) {
+      return;
+    }
+
+    try {
+      await requestPasswordReset(email);
+      setSuccessMessage('Falls ein Konto mit dieser E-Mail-Adresse existiert, wurde ein Reset-Link gesendet. Bitte prüfen Sie Ihre E-Mail und auch Ihren Spam-Ordner.');
+      
+      // Redirect to login after showing message
+      setTimeout(() => {
+        navigate('/login', {
+          state: {
+            message: 'Falls ein Konto mit dieser E-Mail-Adresse existiert, wurde ein Reset-Link gesendet.'
+          }
+        });
+      }, 3000);
+    } catch (err) {
+      console.error('Password reset request failed:', err);
+    }
+  };
+
+  return (
+    <div className={styles.container}>
+      <div className={styles.mainContent}>
+        <div className={styles.logo}>
+          <div className={styles.logoText}>
+            <span className={styles.logoPower}>Power</span>
+            <span className={styles.logoOn}>On</span>
+          </div>
+        </div>
+        <div className={styles.loginSection}>
+          <div className={styles.loginBox}>
+            <div className={styles.loginForm}>
+              {error && (
+                <div className={styles.error}>{error}</div>
+              )}
+              {successMessage && (
+                <div className={styles.success}>{successMessage}</div>
+              )}
+              
+              <h2 className={styles.title}>Passwort zurücksetzen</h2>
+              
+              <div className={styles.floatingLabelInput}>
+                <input
+                  type="email"
+                  name="email"
+                  placeholder=" "
+                  value={email}
+                  onChange={(e) => setEmail(e.target.value)}
+                  onFocus={() => setEmailFocused(true)}
+                  onBlur={() => setEmailFocused(false)}
+                  className={`${styles.input} ${emailFocused || email ? styles.focused : ''}`}
+                />
+                <label className={emailFocused || email ? styles.focusedLabel : styles.label}>
+                  E-Mail-Adresse
+                </label>
+              </div>
+
+              <button 
+                className={`${styles.button} ${styles.loginButton}`}
+                onClick={handleSubmit}
+                disabled={isLoading || !email}
+              >
+                {isLoading ? "wird geladen..." : "Reset-Link anfordern"}
+              </button>
+
+              <div className={styles.registerLink}>
+                <span>Zurück zum</span>
+                <button 
+                  className={styles.textButton}
+                  onClick={() => navigate("/login")}
+                >
+                  Login
+                </button>
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+}
+
+export default PasswordResetRequest;
+```
+
+#### CSS Module (`src/pages/PasswordResetRequest.module.css`):
+- Copy styles from `Register.module.css` or `Login.module.css`
+- Add styles for `.success` message (green background)
+- Add styles for `.title` heading
+
+### 4. New Page: Password Reset (`src/pages/ResetPassword.tsx`)
+
+#### Purpose:
+Allow users to set a new password using the token from the magic link.
+
+#### Structure:
+- Similar layout to `Register.tsx`
+- Password field (with strength indicator)
+- Confirm password field
+- Submit button
+- Extract token from URL parameter (`?token=<UUID>`)
+- Success/error message area
+
+#### Implementation:
+```tsx
+import { useState, useEffect } from 'react';
+import { useNavigate, useSearchParams } from 'react-router-dom';
+import { useResetPassword } from '../hooks/useAuthentication';
+import styles from './ResetPassword.module.css';
+
+function ResetPassword() {
+  const navigate = useNavigate();
+  const [searchParams] = useSearchParams();
+  const { resetPassword, error, isLoading } = useResetPassword();
+  
+  const [password, setPassword] = useState('');
+  const [confirmPassword, setConfirmPassword] = useState('');
+  const [passwordFocused, setPasswordFocused] = useState(false);
+  const [confirmPasswordFocused, setConfirmPasswordFocused] = useState(false);
+  const [validationError, setValidationError] = useState<string | null>(null);
+  const [successMessage, setSuccessMessage] = useState<string | null>(null);
+
+  const token = searchParams.get('token');
+
+  useEffect(() => {
+    document.title = "PowerOn AI Platform - Neues Passwort setzen";
+    
+    // Validate token format (UUID)
+    if (!token || !/^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i.test(token)) {
+      setValidationError('Ungültiger oder fehlender Reset-Token.');
+    }
+  }, [token]);
+
+  const validateForm = (): boolean => {
+    if (!password || !confirmPassword) {
+      setValidationError('Bitte füllen Sie alle Felder aus.');
+      return false;
+    }
+
+    if (password.length < 8) {
+      setValidationError('Passwort muss mindestens 8 Zeichen lang sein.');
+      return false;
+    }
+
+    if (password !== confirmPassword) {
+      setValidationError('Die Passwörter stimmen nicht überein.');
+      return false;
+    }
+
+    return true;
+  };
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+    
+    if (!validateForm() || !token) {
+      return;
+    }
+
+    try {
+      await resetPassword(token, password);
+      setSuccessMessage('Passwort erfolgreich gesetzt! Sie werden zum Login weitergeleitet...');
+      
+      // Redirect to login after 3 seconds
+      setTimeout(() => {
+        navigate('/login', {
+          state: {
+            message: 'Passwort erfolgreich gesetzt. Bitte melden Sie sich an.'
+          }
+        });
+      }, 3000);
+    } catch (err) {
+      console.error('Password reset failed:', err);
+    }
+  };
+
+  if (!token) {
+    return (
+      <div className={styles.container}>
+        <div className={styles.mainContent}>
+          <div className={styles.error}>
+            Ungültiger oder fehlender Reset-Token. Bitte fordern Sie einen neuen Reset-Link an.
+          </div>
+          <button 
+            className={styles.button}
+            onClick={() => navigate('/password-reset-request')}
+          >
+            Reset-Link anfordern
+          </button>
+        </div>
+      </div>
+    );
+  }
+
+  return (
+    <div className={styles.container}>
+      <div className={styles.mainContent}>
+        <div className={styles.logo}>
+          <div className={styles.logoText}>
+            <span className={styles.logoPower}>Power</span>
+            <span className={styles.logoOn}>On</span>
+          </div>
+        </div>
+        <div className={styles.loginSection}>
+          <div className={styles.loginBox}>
+            <div className={styles.loginForm}>
+              <h2 className={styles.title}>Neues Passwort setzen</h2>
+              
+              {(validationError || error) && (
+                <div className={styles.error}>{validationError || error}</div>
+              )}
+              {successMessage && (
+                <div className={styles.success}>{successMessage}</div>
+              )}
+              
+              <div className={styles.floatingLabelInput}>
+                <input
+                  type="password"
+                  name="password"
+                  placeholder=" "
+                  value={password}
+                  onChange={(e) => setPassword(e.target.value)}
+                  onFocus={() => setPasswordFocused(true)}
+                  onBlur={() => setPasswordFocused(false)}
+                  className={`${styles.input} ${passwordFocused || password ? styles.focused : ''}`}
+                />
+                <label className={passwordFocused || password ? styles.focusedLabel : styles.label}>
+                  Neues Passwort
+                </label>
+              </div>
+              <small className={styles.passwordHint}>Mindestens 8 Zeichen</small>
+
+              <div className={styles.floatingLabelInput}>
+                <input
+                  type="password"
+                  name="confirmPassword"
+                  placeholder=" "
+                  value={confirmPassword}
+                  onChange={(e) => setConfirmPassword(e.target.value)}
+                  onFocus={() => setConfirmPasswordFocused(true)}
+                  onBlur={() => setConfirmPasswordFocused(false)}
+                  className={`${styles.input} ${confirmPasswordFocused || confirmPassword ? styles.focused : ''}`}
+                />
+                <label className={confirmPasswordFocused || confirmPassword ? styles.focusedLabel : styles.label}>
+                  Passwort bestätigen
+                </label>
+              </div>
+
+              <button 
+                className={`${styles.button} ${styles.loginButton}`}
+                onClick={handleSubmit}
+                disabled={isLoading || !password || !confirmPassword}
+              >
+                {isLoading ? "wird geladen..." : "Passwort setzen"}
+              </button>
+
+              <div className={styles.registerLink}>
+                <span>Zurück zum</span>
+                <button 
+                  className={styles.textButton}
+                  onClick={() => navigate("/login")}
+                >
+                  Login
+                </button>
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+}
+
+export default ResetPassword;
+```
+
+#### CSS Module (`src/pages/ResetPassword.module.css`):
+- Copy styles from `Register.module.css`
+- Add styles for `.success` message
+- Add styles for `.title` heading
+- Add styles for `.passwordHint` (small text below password field)
+
+### 5. Authentication Hooks (`src/hooks/useAuthentication.ts`)
+
+#### New Hooks Required:
+
+1. **`usePasswordResetRequest()`**
+```tsx
+export function usePasswordResetRequest() {
+  const [error, setError] = useState<string | null>(null);
+  const [isLoading, setIsLoading] = useState(false);
+
+  const requestPasswordReset = async (email: string): Promise<void> => {
+    setIsLoading(true);
+    setError(null);
+
+    try {
+      const response = await api.post('/api/local/password-reset-request', { email });
+      
+      // Backend always returns success (security: don't reveal if email exists)
+      // No need to check response data
+    } catch (error: any) {
+      let errorMessage = 'An error occurred during password reset request';
+      
+      if (error.response) {
+        if (error.response.data?.detail) {
+          if (Array.isArray(error.response.data.detail)) {
+            errorMessage = error.response.data.detail.map((err: any) => err.msg).join(', ');
+          } else {
+            errorMessage = error.response.data.detail;
+          }
+        }
+      } else if (error.request) {
+        errorMessage = 'No response received from server';
+      } else {
+        errorMessage = error.message;
+      }
+      
+      setError(errorMessage);
+      throw error;
+    } finally {
+      setIsLoading(false);
+    }
+  };
+
+  return {
+    requestPasswordReset,
+    error,
+    isLoading
+  };
+}
+```
+
+2. **`useResetPassword()`**
+```tsx
+export function useResetPassword() {
+  const [error, setError] = useState<string | null>(null);
+  const [isLoading, setIsLoading] = useState(false);
+
+  const resetPassword = async (token: string, password: string): Promise<void> => {
+    setIsLoading(true);
+    setError(null);
+
+    try {
+      const response = await api.post('/api/local/password-reset', { token, password });
+      
+      // Success - password reset completed
+    } catch (error: any) {
+      let errorMessage = 'An error occurred during password reset';
+      
+      if (error.response) {
+        if (error.response.data?.detail) {
+          if (Array.isArray(error.response.data.detail)) {
+            errorMessage = error.response.data.detail.map((err: any) => err.msg).join(', ');
+          } else {
+            errorMessage = error.response.data.detail;
+          }
+        }
+      } else if (error.request) {
+        errorMessage = 'No response received from server';
+      } else {
+        errorMessage = error.message;
+      }
+      
+      setError(errorMessage);
+      throw error;
+    } finally {
+      setIsLoading(false);
+    }
+  };
+
+  return {
+    resetPassword,
+    error,
+    isLoading
+  };
+}
+```
+
+#### Update `useRegister()` Hook:
+
+**Modify the `register` function:**
+```tsx
+const register = async (userData: RegisterData): Promise<RegisterResponse> => {
+  setIsLoading(true);
+  setError(null);
+
+  try {
+    // Remove password from dataToSend
+    const dataToSend = {
+      userData: {
+        username: userData.username,
+        email: userData.email,
+        fullName: userData.fullName,
+        language: userData.language || 'de',
+        enabled: userData.enabled !== undefined ? userData.enabled : true,
+        privilege: userData.privilege || 'user'
+      }
+      // password: userData.password // REMOVED
+    };
+
+    const response = await api.post('/api/local/register', dataToSend, {
+      headers: {
+        'Content-Type': 'application/json'
+      }
+    });
+
+    return {
+      success: true,
+      message: 'Registration successful. Please check your email to set your password.',
+      user: response.data
+    };
+  } catch (error: any) {
+    // ... existing error handling ...
+  } finally {
+    setIsLoading(false);
+  }
+};
+```
+
+**Update `RegisterData` interface:**
+```tsx
+interface RegisterData {
+  username: string;
+  // password: string; // REMOVED - no longer required
+  email: string;
+  fullName: string;
+  language?: string;
+  enabled?: boolean;
+  privilege?: string;
+}
+```
+
+### 6. Routing Configuration
+
+#### Update `src/App.tsx` or routing configuration:
+
+Add routes for new pages:
+```tsx
+import PasswordResetRequest from './pages/PasswordResetRequest';
+import ResetPassword from './pages/ResetPassword';
+
+// In your routes:
+<Route path="/password-reset-request" element={<PasswordResetRequest />} />
+<Route path="/reset" element={<ResetPassword />} />
+```
+
+## UI/UX Considerations
+
+### Error Handling
+
+1. **Registration Errors**:
+   - Username already exists → Show error on username field (already implemented)
+   - Email already exists → Show generic success (security: don't reveal email exists)
+   - Email sending fails → Show generic success (don't reveal email issues)
+
+2. **Password Reset Request Errors**:
+   - Invalid email format → Show error on email field
+   - Email not found → Show generic success (security: don't reveal email doesn't exist)
+   - Rate limiting → Show error message
+
+3. **Password Reset Errors**:
+   - Invalid/expired token → Show error message, link back to password reset request
+   - Password too weak → Show specific requirements
+   - Password mismatch → Show error on confirm password field
+
+### Success Messages
+
+1. **Registration Success**:
+   ```
+   "Registrierung erfolgreich! Bitte prüfen Sie Ihre E-Mail, um Ihr Passwort zu setzen.
+   Falls Sie keine E-Mail erhalten, prüfen Sie bitte auch Ihren Spam-Ordner."
+   ```
+
+2. **Password Reset Request Success**:
+   ```
+   "Falls ein Konto mit dieser E-Mail-Adresse existiert, wurde ein Reset-Link gesendet.
+   Bitte prüfen Sie Ihre E-Mail und auch Ihren Spam-Ordner."
+   ```
+
+3. **Password Reset Success**:
+   ```
+   "Passwort erfolgreich gesetzt! Sie werden zum Login weitergeleitet..."
+   ```
+
+### Accessibility
+
+- All form fields should have proper labels (already implemented with floating labels)
+- Error messages should be associated with form fields using ARIA attributes
+- Success messages should be announced to screen readers
+- Form validation should provide clear, actionable feedback
+
+### Responsive Design
+
+- All pages should work on mobile devices (existing styles should handle this)
+- Form layouts should adapt to smaller screens
+- Buttons should be appropriately sized for touch interfaces
+- Error messages should be readable on all screen sizes
+
+## Testing Checklist
+
+### Registration Flow
+- [ ] User can register without password
+- [ ] Email validation works correctly
+- [ ] Success message displays correctly
+- [ ] Redirect to login works
+- [ ] Error handling for duplicate username
+- [ ] Error handling for duplicate email (should show generic success)
+
+### Password Reset Request Flow
+- [ ] User can access password reset request page from login
+- [ ] Email validation works correctly
+- [ ] Success message displays correctly
+- [ ] Redirect to login works
+- [ ] Error handling for invalid email format
+- [ ] Error handling for rate limiting
+
+### Password Reset Flow
+- [ ] User can access reset page with valid token
+- [ ] Token extraction from URL works
+- [ ] Password validation works correctly
+- [ ] Password confirmation validation works
+- [ ] Success message displays correctly
+- [ ] Redirect to login works after 3 seconds
+- [ ] Error handling for invalid token
+- [ ] Error handling for expired token
+- [ ] Error handling for weak password
+
+### Integration Testing
+- [ ] End-to-end registration flow works
+- [ ] End-to-end password reset flow works
+- [ ] Email links work correctly
+- [ ] Token expiration handling works
+- [ ] Multiple reset requests invalidate old tokens
+
+## Implementation Order
+
+1. **Backend Changes First** (prerequisites):
+   - Add resetToken fields to UserInDB model
+   - Implement password reset endpoints
+   - Implement email sending functionality
+
+2. **Frontend Hooks**:
+   - Add `usePasswordResetRequest()` hook
+   - Add `useResetPassword()` hook
+   - Update `useRegister()` hook (remove password requirement)
+
+3. **Frontend Pages**:
+   - Create `PasswordResetRequest.tsx`
+   - Create `ResetPassword.tsx`
+   - Update `Login.tsx` (add reset button)
+   - Update `Register.tsx` (remove password fields)
+
+4. **Routing**:
+   - Add routes for new pages
+
+5. **Styling**:
+   - Create CSS modules for new pages
+   - Add success message styles
+   - Ensure consistent styling
+
+6. **Testing**:
+   - Test each flow independently
+   - Test integration between frontend and backend
+   - Test error scenarios
+   - Test edge cases
+
+## Notes
+
+- All text should be in German to match existing UI (`Login.tsx` uses German)
+- CSS modules should match existing patterns from `Register.module.css` and `Login.module.css`
+- Form validation should use existing patterns from `Register.tsx`
+- Error handling should use existing patterns (error state, error display)
+- Success messages should use new success state pattern
+- API calls should use existing `api.ts` instance
+- Hooks should follow existing patterns from `useAuthentication.ts`
+- Token validation should check UUID format before making API call
+- Use React Router's `useSearchParams` for token extraction from URL
+
+## File Structure
+
+```
+frontend_nyla/
+├── src/
+│   ├── pages/
+│   │   ├── Login.tsx (MODIFY - add password reset link)
+│   │   ├── Register.tsx (MODIFY - remove password fields)
+│   │   ├── PasswordResetRequest.tsx (NEW)
+│   │   ├── ResetPassword.tsx (NEW)
+│   │   ├── Login.module.css (MODIFY - add password reset link styles)
+│   │   ├── Register.module.css (MODIFY - add info message styles)
+│   │   ├── PasswordResetRequest.module.css (NEW)
+│   │   └── ResetPassword.module.css (NEW)
+│   ├── hooks/
+│   │   └── useAuthentication.ts (MODIFY - update useRegister, add new hooks)
+│   └── App.tsx (MODIFY - add routes)
+```