Initiale Ablage der umsortierten Skrift-Programme

Struktur: Docker/ (skrift-backend, signature-service), Webseite/ (skrift-configurator, skrift-job-manager), Produktion/ (skrift-produktion, AutoRecover). Aufgeräumt: signature-to-svg entfernt, Backend-PayPal-Service entfernt (PayPal läuft client-seitig im Configurator), Dev-/Test-Artefakte und Deployment-Dokus bereinigt, .dockerignore repariert. CLAUDE.md mit Architektur ergänzt. Secrets (.env, config.json) via .gitignore ausgeschlossen. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-20 12:21:08 +02:00
commit 0341c4eaea
90 changed files with 40401 additions and 0 deletions
--- a/Docker/skrift-backend/.dockerignore
+++ b/Docker/skrift-backend/.dockerignore
@@ -0,0 +1,30 @@
+# Dependencies (werden im Image per npm install neu erzeugt)
+node_modules
+npm-debug.log
+
+# Secrets & lokale Config (kommen zur Laufzeit via docker-compose environment)
+.env
+.env.example
+
+# Git
+.git
+.gitignore
+
+# Laufzeit-/generierte Daten (output ist in Prod ein Volume)
+cache
+output
+server.log
+*.log
+
+# Doku
+*.md
+*.txt
+
+# Dev-/Test-Artefakte
+bruno-tests
+deploy.sh
+test-*.js
+test-*.json
+test-*.sh
+generate-9-orders.js
+prepare-deployment.js
--- a/Docker/skrift-backend/.env.example
+++ b/Docker/skrift-backend/.env.example
@@ -0,0 +1,21 @@
+# Environment Configuration Example
+# Copy this file to .env and fill in your values
+
+# Node Environment
+NODE_ENV=production
+
+# Scriptalizer API Configuration
+SCRIPTALIZER_LICENSE_KEY=your-license-key-here
+SCRIPTALIZER_ERR_FREQUENCY=0
+
+# Preview Configuration
+# No batch size limit - frontend can send unlimited letters
+# Backend automatically splits into 25-letter batches for Scriptalizer API
+# No cache expiration
+# No rate limiting
+
+# Server Configuration
+PORT=4000
+
+# API Authentication (optional)
+API_TOKEN=your-api-token-here
--- a/Docker/skrift-backend/.gitignore
+++ b/Docker/skrift-backend/.gitignore
@@ -0,0 +1,7 @@
+node_modules/
+.env
+cache/
+output/
+npm-debug.log
+.DS_Store
+*.log
--- a/Docker/skrift-backend/Dockerfile
+++ b/Docker/skrift-backend/Dockerfile
@@ -0,0 +1,31 @@
+FROM node:20-alpine
+
+# Install dependencies for better-sqlite3 if needed later
+RUN apk add --no-cache python3 make g++
+
+# Create app directory
+WORKDIR /app
+
+# Copy package files
+COPY package*.json ./
+
+# Install dependencies (npm install instead of ci for flexibility)
+RUN npm install --omit=dev
+
+# Copy application files
+COPY . .
+
+# Create necessary directories
+RUN mkdir -p /app/cache/previews \
+    && mkdir -p /app/output \
+    && mkdir -p /app/fonts
+
+# Expose port
+EXPOSE 4000
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+  CMD node -e "require('http').get('http://localhost:4000/health', (r) => process.exit(r.statusCode === 200 ? 0 : 1))"
+
+# Start application
+CMD ["node", "src/server.js"]
--- a/Docker/skrift-backend/HANDSCHRIFT_VARIATIONEN.md
+++ b/Docker/skrift-backend/HANDSCHRIFT_VARIATIONEN.md
@@ -0,0 +1,198 @@
+# Handschrift-Variationen - Konfiguration
+
+## Aktuelle Einstellungen
+
+### 1. Scriptalizer Error Frequency
+```
+SCRIPTALIZER_ERR_FREQUENCY=0
+```
+- **Bedeutung:** Keine durchgestrichenen Wörter oder Tippfehler
+- **Ergebnis:** Saubere, fehlerfreie Handschrift
+
+---
+
+### 2. Wortabstands-Variation: **15%**
+
+**Implementierung:** `src/lib/svg-font-engine.js`
+
+```javascript
+// Leerzeichen mit 15% Variation
+const baseSpace = fontSizePx * 0.4;
+const variation = baseSpace * 0.15 * (Math.sin(wordIndex * 2.5) * 0.5 + 0.5);
+const spacePx = baseSpace + variation;
+```
+
+**Effekt:**
+- Basis-Wortabstand: 40% der Schriftgröße (≈10.4 px bei 26px Font)
+- Variation: ±1.56 px (15% von 10.4px)
+- Natürliche, ungleichmäßige Abstände zwischen Wörtern
+
+---
+
+### 3. Wort-Rotation (Schräglage): **±5%** (≈±2.5°)
+
+**Implementierung:** `src/lib/svg-font-engine.js`
+
+```javascript
+// Rotation zwischen -2.5° und +2.5° (±0.044 radians)
+const rotationVariation = 0.044 * (Math.sin(wordIndex * 3.7) * 0.5 + 0.5) - 0.022;
+wordRotation = rotationVariation;
+
+// Matrix-Transformation mit Rotation
+const cosR = Math.cos(wordRotation);
+const sinR = Math.sin(wordRotation);
+const transform = `matrix(${scale * cosR},${scale * sinR},${-scale * sinR},${-scale * cosR},${x},${baselineY})`;
+```
+
+**Effekt:**
+- Jedes Wort bekommt eine individuelle, leichte Schräglage
+- Rotation: -2.5° bis +2.5° (±0.044 Radians)
+- Macht die Handschrift natürlicher und lebendiger
+- Jedes Wort ist leicht unterschiedlich geneigt
+
+---
+
+## Variation-Pattern
+
+### Sinuswellen-Basis
+Beide Variationen verwenden Sinuswellen für natürliche, nicht-gleichförmige Muster:
+
+```javascript
+Math.sin(wordIndex * 2.5)  // Wortabstand (langsame Oszillation)
+Math.sin(wordIndex * 3.7)  // Rotation (schnellere Oszillation)
+```
+
+**Vorteil:**
+- Keine zufälligen Sprünge
+- Sanfte, natürliche Übergänge
+- Reproduzierbar (gleicher Text → gleiche Variation)
+- Kein Seed-Management nötig
+
+---
+
+## Visuelle Beispiele
+
+### Ohne Variation (alt):
+```
+Hallo  Max  Mustermann  aus  Berlin
+```
+Alle Wörter perfekt gerade, gleiche Abstände
+
+### Mit Variation (neu):
+```
+Hallo Max  Mustermann aus   Berlin
+  ↗    →      ↘         →     ↗
+```
+- Unterschiedliche Wortabstände (15% Variation)
+- Leichte Schräglage pro Wort (±2.5°)
+
+---
+
+## Technische Details
+
+### SVG Matrix-Transformation
+
+**Original (ohne Rotation):**
+```xml
+<path transform="matrix(0.00846,0,0,-0.00846,75.6,120.5)" />
+```
+
+**Neu (mit Rotation):**
+```xml
+<path transform="matrix(0.00845,0.00004,-0.00004,-0.00845,75.6,120.5)" />
+```
+
+Die kleinen Werte in Position 2 und 3 der Matrix erzeugen die Rotation:
+- Position 2 (b): `scale * sin(rotation)` ≈ 0.00004
+- Position 3 (c): `-scale * sin(rotation)` ≈ -0.00004
+
+---
+
+## Anpassung der Variationen
+
+### Wortabstand ändern
+
+**Datei:** `src/lib/svg-font-engine.js` (Zeile 187-189)
+
+```javascript
+// Aktuell: 15%
+const variation = baseSpace * 0.15 * (Math.sin(wordIndex * 2.5) * 0.5 + 0.5);
+
+// Mehr Variation (z.B. 25%):
+const variation = baseSpace * 0.25 * (Math.sin(wordIndex * 2.5) * 0.5 + 0.5);
+
+// Weniger Variation (z.B. 8%):
+const variation = baseSpace * 0.08 * (Math.sin(wordIndex * 2.5) * 0.5 + 0.5);
+```
+
+---
+
+### Rotation (Schräglage) ändern
+
+**Datei:** `src/lib/svg-font-engine.js` (Zeile 200-202)
+
+```javascript
+// Aktuell: ±2.5° (0.044 radians)
+const rotationVariation = 0.044 * (Math.sin(wordIndex * 3.7) * 0.5 + 0.5) - 0.022;
+
+// Stärker schräg (z.B. ±5°):
+const rotationVariation = 0.087 * (Math.sin(wordIndex * 3.7) * 0.5 + 0.5) - 0.0435;
+
+// Weniger schräg (z.B. ±1°):
+const rotationVariation = 0.0175 * (Math.sin(wordIndex * 3.7) * 0.5 + 0.5) - 0.00875;
+
+// Keine Rotation (deaktivieren):
+const rotationVariation = 0;
+```
+
+**Umrechnung Grad → Radians:**
+```
+Radians = Grad × (π / 180)
+±1° = ±0.0175 rad
+±2.5° = ±0.044 rad
+±5° = ±0.087 rad
+```
+
+---
+
+## Test-Beispiel
+
+```bash
+curl -X POST http://localhost:4000/api/preview/batch \
+  -H "Content-Type: application/json" \
+  -d '{
+    "sessionId": "variation-demo",
+    "letters": [{
+      "index": 0,
+      "format": "a4",
+      "font": "tilda",
+      "text": "Dies ist ein Test mit natürlicher Handschrift-Variation.\n\nDie Wörter haben unterschiedliche Abstände und eine leichte Schräglage.\n\nDas macht das Schriftbild authentischer!",
+      "placeholders": {}
+    }]
+  }'
+```
+
+---
+
+## Performance
+
+**Impact:**
+- Minimaler Overhead durch sin/cos Berechnungen
+- Pro Zeichen: ~4 zusätzliche Operationen
+- Bei 2000 Zeichen: ~0.5ms zusätzliche Verarbeitungszeit
+- Vernachlässigbar im Vergleich zur Scriptalizer API (1-3 Sekunden)
+
+---
+
+## Kompatibilität
+
+✅ **Alle SVG-Viewer** unterstützen Matrix-Transformationen
+✅ **Alle Browser** (Chrome, Firefox, Safari, Edge)
+✅ **Plotter-Software** verarbeitet transformierte Pfade korrekt
+✅ **Keine Änderung der Pfad-Daten** (nur Transformation)
+
+---
+
+**Version:** 1.1.0
+**Letzte Änderung:** 2026-01-02
+**Status:** Produktionsreif ✅
--- a/Docker/skrift-backend/README.md
+++ b/Docker/skrift-backend/README.md
@@ -0,0 +1,461 @@
+# Skrift Backend - Handwritten Document Generator
+
+Docker-basiertes Backend für die Generierung von handschriftlichen Dokumenten (Briefe, Postkarten, Umschläge) mit SVG-Output.
+
+## Features
+
+- **Preview-System**: Batch-Generierung von Vorschauen mit Caching (30 Briefe pro Batch)
+- **Scriptalizer Integration**: Nutzt externe API für natürliche Handschrift-Variationen
+- **SVG-Generierung**: Eigene Font-Engine für hochqualitative SVG-Ausgabe
+- **Multi-Format Support**: A4, A6 (Hoch-/Querformat), C6, DIN Lang Umschläge
+- **Platzhalter-System**: Automatische Ersetzung von `[[Platzhalter]]` mit CSV-Export
+- **Rate Limiting**: Schutz vor API-Spam (konfigurierbar)
+- **Docker-Ready**: Vollständig containerisiert mit docker-compose
+
+## Quick Start
+
+### 1. Konfiguration
+
+```bash
+cp .env.example .env
+# .env bearbeiten und Scriptalizer License Key eintragen
+```
+
+### 2. Lokal testen (ohne Docker)
+
+```bash
+npm install
+npm start
+```
+
+Server läuft auf: `http://localhost:4000`
+
+### 3. Mit Docker deployen
+
+```bash
+docker-compose up -d
+```
+
+## API-Endpunkte
+
+### Health Check
+
+```
+GET /health
+```
+
+**Response:**
+```json
+{
+  "status": "healthy",
+  "timestamp": "2026-01-15T12:00:00Z",
+  "uptime": 12345,
+  "scriptalizer": "configured",
+  "storage": {
+    "cache": true,
+    "output": true
+  }
+}
+```
+
+---
+
+### Preview Batch Generierung
+
+```
+POST /api/preview/batch
+```
+
+**Request Body:**
+```json
+{
+  "sessionId": "uuid-abc-123",
+  "batchIndex": 0,
+  "forceRegenerate": false,
+  "config": {
+    "font": "tilda",
+    "letters": [
+      {
+        "index": 0,
+        "format": "a4",
+        "text": "Hallo [[Vorname]], dein Code ist [[Gutscheincode]]...",
+        "placeholders": {
+          "Vorname": "Max",
+          "Nachname": "Mustermann",
+          "Strasse": "Hauptstr. 1",
+          "PLZ": "10115",
+          "Ort": "Berlin",
+          "Gutscheincode": "SAVE20"
+        }
+      }
+    ],
+    "envelopes": [
+      {
+        "index": 0,
+        "format": "c6",
+        "type": "recipient",
+        "data": {
+          "Vorname": "Max",
+          "Nachname": "Mustermann",
+          "Strasse": "Hauptstr. 1",
+          "PLZ": "10115",
+          "Ort": "Berlin"
+        }
+      }
+    ]
+  }
+}
+```
+
+**Response:**
+```json
+{
+  "sessionId": "uuid-abc-123",
+  "files": [
+    {
+      "type": "letter",
+      "index": 0,
+      "url": "/api/preview/uuid-abc-123/letter_000.svg"
+    },
+    {
+      "type": "envelope",
+      "index": 0,
+      "url": "/api/preview/uuid-abc-123/envelope_000.svg"
+    }
+  ],
+  "csvUrl": "/api/preview/uuid-abc-123/platzhalter.csv",
+  "expiresAt": "2026-01-15T14:00:00Z"
+}
+```
+
+**Rate Limit:** 2 Requests/Minute pro sessionId
+
+---
+
+### Preview-Datei abrufen
+
+```
+GET /api/preview/:sessionId/:filename
+```
+
+**Beispiel:**
+```
+GET /api/preview/uuid-abc-123/letter_000.svg
+```
+
+**Response:** SVG-Datei (Content-Type: image/svg+xml)
+
+---
+
+### Bestellung finalisieren (aus Cache)
+
+```
+POST /api/order/finalize
+```
+
+**Request Body:**
+```json
+{
+  "sessionId": "uuid-abc-123",
+  "orderNumber": "SK-2026-01-15-001"
+}
+```
+
+**Response:**
+```json
+{
+  "orderNumber": "SK-2026-01-15-001",
+  "outputPath": "/app/output/SK-2026-01-15-001",
+  "files": {
+    "letters": 100,
+    "envelopes": 100,
+    "csv": "platzhalter.csv"
+  },
+  "timestamp": "2026-01-15T12:30:00Z"
+}
+```
+
+---
+
+### Bestellung neu generieren (ohne Cache)
+
+```
+POST /api/order/generate
+```
+
+**Request Body:**
+```json
+{
+  "orderNumber": "SK-2026-01-15-002",
+  "config": {
+    "font": "tilda",
+    "letters": [...],
+    "envelopes": [...]
+  }
+}
+```
+
+**Response:** Gleich wie `/api/order/finalize`
+
+---
+
+## Formate
+
+### Schriftstücke (Letters)
+- `a4` - A4 Hochformat (210 × 297 mm)
+- `a6p` - A6 Hochformat (105 × 148 mm)
+- `a6l` - A6 Querformat (148 × 105 mm)
+
+### Umschläge (Envelopes)
+- `c6` - C6 Umschlag (162 × 114 mm)
+- `din_lang` - DIN Lang Umschlag (220 × 110 mm)
+
+### Fonts
+- `tilda` - PremiumUltra79
+- `alva` - PremiumUltra23
+- `ellie` - PremiumUltra39
+
+---
+
+## Umschlag-Typen
+
+### Empfänger-Adresse (type: "recipient")
+Adresse wird **unten links** positioniert (kein Sichtfenster).
+
+```json
+{
+  "type": "recipient",
+  "data": {
+    "Vorname": "Max",
+    "Nachname": "Mustermann",
+    "Strasse": "Hauptstr. 1",
+    "PLZ": "10115",
+    "Ort": "Berlin"
+  }
+}
+```
+
+### Individueller Text (type: "custom")
+Text wird **mittig zentriert** positioniert. Max. 150 Zeichen.
+
+```json
+{
+  "type": "custom",
+  "data": {
+    "customText": "Für meine großartige Freundin Caro"
+  }
+}
+```
+
+---
+
+## Verzeichnisstruktur
+
+```
+/app/
+├── cache/
+│   └── previews/
+│       └── {sessionId}/
+│           ├── letter_000.svg
+│           ├── envelope_000.svg
+│           ├── platzhalter.csv
+│           └── metadata.json
+│
+├── output/
+│   └── {orderNumber}/
+│       ├── schriftstuecke/
+│       │   ├── brief_000.svg
+│       │   └── ...
+│       ├── umschlaege/
+│       │   ├── umschlag_000.svg
+│       │   └── ...
+│       ├── platzhalter.csv
+│       └── order-metadata.json
+│
+└── fonts/
+    ├── tilda.svg
+    ├── alva.svg
+    └── ellie.svg
+```
+
+---
+
+## Umgebungsvariablen
+
+```bash
+# Node Environment
+NODE_ENV=production
+
+# Scriptalizer API
+SCRIPTALIZER_LICENSE_KEY=your-key-here
+SCRIPTALIZER_ERR_FREQUENCY=10
+
+# Preview System
+BATCH_SIZE=30
+CACHE_LIFETIME_HOURS=2
+RATE_LIMIT_PER_MINUTE=2
+
+# Server
+PORT=4000
+CORS_ORIGIN=*
+```
+
+---
+
+## Deployment
+
+### Auf Server (mit Docker)
+
+```bash
+# .env Datei erstellen mit production values
+docker-compose up -d
+
+# Logs ansehen
+docker-compose logs -f
+
+# Stoppen
+docker-compose down
+```
+
+### Nginx Proxy Manager Setup
+
+1. Proxy Host erstellen
+2. Domain: `api.skrift.de` (oder deine Domain)
+3. Forward Hostname/IP: `localhost`
+4. Forward Port: `4000`
+5. SSL Zertifikat über NPM erstellen
+
+---
+
+## Entwicklung
+
+### Lokales Testen
+
+```bash
+npm run dev  # Mit nodemon
+```
+
+### Scriptalizer Separator Test
+
+```bash
+npm run test:separator
+```
+
+### Logs
+
+```bash
+# Docker logs
+docker-compose logs -f skrift-backend
+
+# Lokale logs
+# Output in console
+```
+
+---
+
+## Integration mit N8N
+
+N8N kann direkt auf den `/app/output/{orderNumber}/` Ordner zugreifen:
+
+```javascript
+// N8N Workflow (Beispiel)
+const fs = require('fs');
+const orderPath = '/var/skrift-output/SK-2026-01-15-001';
+
+// Lese alle SVGs
+const letters = fs.readdirSync(`${orderPath}/schriftstuecke`);
+
+// Sende an Plotter
+for (const file of letters) {
+  await sendToPlotter(`${orderPath}/schriftstuecke/${file}`);
+}
+```
+
+---
+
+## Fehlerbehandlung
+
+### HTTP Status Codes
+
+- `200` - Success
+- `400` - Bad Request (z.B. ungültige Parameter)
+- `404` - Not Found (z.B. Session nicht gefunden)
+- `410` - Gone (z.B. Cache abgelaufen)
+- `429` - Too Many Requests (Rate Limit)
+- `500` - Internal Server Error
+- `503` - Service Unavailable (z.B. Scriptalizer down)
+
+### Typische Fehler
+
+**Rate Limit überschritten:**
+```json
+{
+  "error": "Zu viele Vorschau-Anfragen. Bitte warten Sie.",
+  "retryAfter": 45,
+  "message": "Limit: 2 Anfragen pro Minute"
+}
+```
+
+**Scriptalizer Fehler:**
+```json
+{
+  "error": "Scriptalizer request failed: timeout"
+}
+```
+
+**Cache abgelaufen:**
+```json
+{
+  "error": "Preview-Session abgelaufen. Bitte neu generieren."
+}
+```
+
+---
+
+## Limits
+
+- **Scriptalizer API**: 10.000 Calls/Tag
+- **Batch Size**: 30 Briefe pro Request
+- **Input Size**: 48KB pro Scriptalizer Call
+- **Rate Limit**: 2 Preview-Requests/Minute
+- **Cache Lifetime**: 2 Stunden
+
+---
+
+## Troubleshooting
+
+### Fonts nicht gefunden
+
+```bash
+# Fonts kopieren
+cp /path/to/fonts/*.svg ./fonts/
+```
+
+### Scriptalizer API Fehler
+
+```bash
+# License Key prüfen
+cat .env | grep SCRIPTALIZER_LICENSE_KEY
+
+# Test-Script ausführen
+npm run test:separator
+```
+
+### Permissions Fehler
+
+```bash
+# Cache/Output Ordner Permissions
+chmod -R 755 cache output
+```
+
+---
+
+## Weitere Infos
+
+- **Scriptalizer API**: [www.scriptalizer.co.uk](https://www.scriptalizer.co.uk)
+- **Support**: Siehe Issues in Repository
+
+---
+
+**Version**: 1.0.0
+**Last Updated**: 2026-01-01
--- a/Docker/skrift-backend/TILDA_API_BEISPIEL.md
+++ b/Docker/skrift-backend/TILDA_API_BEISPIEL.md
@@ -0,0 +1,331 @@
+# Tilda Font API-Aufruf Beispiel
+
+## Konfiguration
+- **Error Frequency:** 0 (keine durchgestrichenen Wörter)
+- **Wortabstand-Variation:** ±5% für natürlicheres Schriftbild
+- **Font:** Tilda (Scriptalizer: PremiumUltra79)
+
+---
+
+## 1. Preview-Generierung (empfohlen)
+
+### Endpoint
+```
+POST http://localhost:4000/api/preview/batch
+```
+
+### Request Headers
+```
+Content-Type: application/json
+```
+
+### Request Body
+```json
+{
+  "sessionId": "meine-session-12345",
+  "letters": [
+    {
+      "index": 0,
+      "format": "a4",
+      "font": "tilda",
+      "text": "Sehr geehrte Damen und Herren,\n\nhiermit möchten wir Ihnen mitteilen, dass Ihre Bestellung erfolgreich bearbeitet wurde.\n\nWir bedanken uns für Ihr Vertrauen und freuen uns auf eine weitere Zusammenarbeit.\n\nMit freundlichen Grüßen\nIhr Skrift-Team",
+      "placeholders": {}
+    }
+  ]
+}
+```
+
+### cURL Beispiel
+```bash
+curl -X POST http://localhost:4000/api/preview/batch \
+  -H "Content-Type: application/json" \
+  -d '{
+    "sessionId": "meine-session-12345",
+    "letters": [
+      {
+        "index": 0,
+        "format": "a4",
+        "font": "tilda",
+        "text": "Sehr geehrte Damen und Herren,\n\nhiermit möchten wir Ihnen mitteilen, dass Ihre Bestellung erfolgreich bearbeitet wurde.\n\nWir bedanken uns für Ihr Vertrauen und freuen uns auf eine weitere Zusammenarbeit.\n\nMit freundlichen Grüßen\nIhr Skrift-Team",
+        "placeholders": {}
+      }
+    ]
+  }'
+```
+
+### Response
+```json
+{
+  "sessionId": "meine-session-12345",
+  "files": [
+    {
+      "index": 0,
+      "filename": "letter_000.svg",
+      "url": "/api/preview/meine-session-12345/letter_000.svg"
+    }
+  ],
+  "csvUrl": "/api/preview/meine-session-12345/placeholders.csv"
+}
+```
+
+### Preview SVG abrufen
+```bash
+curl http://localhost:4000/api/preview/meine-session-12345/letter_000.svg -o preview.svg
+```
+
+---
+
+## 2. Mit Platzhaltern
+
+### Request Body
+```json
+{
+  "sessionId": "platzhalter-test",
+  "letters": [
+    {
+      "index": 0,
+      "format": "a4",
+      "font": "tilda",
+      "text": "Sehr geehrte/r [[Vorname]] [[Nachname]],\n\nhiermit bestätigen wir Ihre Bestellung [[Bestellnummer]].\n\nIhr persönlicher Gutscheincode: [[Gutscheincode]]\nGültig bis: [[Ablaufdatum]]\n\nMit freundlichen Grüßen",
+      "placeholders": {
+        "Vorname": "Max",
+        "Nachname": "Mustermann",
+        "Bestellnummer": "SK-2026-001",
+        "Gutscheincode": "SAVE20",
+        "Ablaufdatum": "31.12.2026"
+      }
+    }
+  ]
+}
+```
+
+---
+
+## 3. Mehrere Briefe (Batch)
+
+### Request Body
+```json
+{
+  "sessionId": "batch-test",
+  "letters": [
+    {
+      "index": 0,
+      "format": "a4",
+      "font": "tilda",
+      "text": "Sehr geehrte/r [[Vorname]] [[Nachname]],\n\nvielen Dank für Ihre Bestellung!",
+      "placeholders": {
+        "Vorname": "Max",
+        "Nachname": "Mustermann"
+      }
+    },
+    {
+      "index": 1,
+      "format": "a4",
+      "font": "tilda",
+      "text": "Sehr geehrte/r [[Vorname]] [[Nachname]],\n\nvielen Dank für Ihre Bestellung!",
+      "placeholders": {
+        "Vorname": "Anna",
+        "Nachname": "Schmidt"
+      }
+    },
+    {
+      "index": 2,
+      "format": "a4",
+      "font": "tilda",
+      "text": "Sehr geehrte/r [[Vorname]] [[Nachname]],\n\nvielen Dank für Ihre Bestellung!",
+      "placeholders": {
+        "Vorname": "Thomas",
+        "Nachname": "Müller"
+      }
+    }
+  ]
+}
+```
+
+**Hinweis:** Bis zu 30 Briefe pro Batch möglich (konfigurierbar)
+
+---
+
+## 4. Bestellung finalisieren
+
+Nach der Vorschau kann die Bestellung finalisiert werden:
+
+### Endpoint
+```
+POST http://localhost:4000/api/order/finalize
+```
+
+### Request Body
+```json
+{
+  "sessionId": "meine-session-12345",
+  "orderNumber": "SK-2026-01-02-001"
+}
+```
+
+### cURL Beispiel
+```bash
+curl -X POST http://localhost:4000/api/order/finalize \
+  -H "Content-Type: application/json" \
+  -d '{
+    "sessionId": "meine-session-12345",
+    "orderNumber": "SK-2026-01-02-001"
+  }'
+```
+
+### Response
+```json
+{
+  "orderNumber": "SK-2026-01-02-001",
+  "outputPath": "/app/output/SK-2026-01-02-001",
+  "files": [
+    "letter_000.svg",
+    "placeholders.csv"
+  ],
+  "timestamp": "2026-01-02T09:11:00.000Z"
+}
+```
+
+---
+
+## 5. Direkte Bestellungs-Generierung (ohne Preview)
+
+### Endpoint
+```
+POST http://localhost:4000/api/order/generate
+```
+
+### Request Body
+```json
+{
+  "orderNumber": "SK-2026-01-02-002",
+  "letters": [
+    {
+      "index": 0,
+      "format": "a4",
+      "font": "tilda",
+      "text": "Sehr geehrte Damen und Herren,\n\nhiermit bestätigen wir den Eingang Ihrer Bestellung.\n\nMit freundlichen Grüßen",
+      "placeholders": {}
+    }
+  ]
+}
+```
+
+### cURL Beispiel
+```bash
+curl -X POST http://localhost:4000/api/order/generate \
+  -H "Content-Type: application/json" \
+  -d '{
+    "orderNumber": "SK-2026-01-02-002",
+    "letters": [
+      {
+        "index": 0,
+        "format": "a4",
+        "font": "tilda",
+        "text": "Sehr geehrte Damen und Herren,\n\nhiermit bestätigen wir den Eingang Ihrer Bestellung.\n\nMit freundlichen Grüßen",
+        "placeholders": {}
+      }
+    ]
+  }'
+```
+
+---
+
+## Verfügbare Formate
+
+- **a4**: A4 Hochformat (210 × 297 mm)
+- **a6p**: A6 Hochformat (105 × 148 mm)
+- **a6l**: A6 Querformat (148 × 105 mm)
+
+---
+
+## Verfügbare Fonts
+
+- **tilda**: Scriptalizer PremiumUltra79
+- **alva**: Scriptalizer PremiumUltra23
+- **ellie**: Scriptalizer PremiumUltra39
+
+---
+
+## Features
+
+✅ **Keine Fehler:** Error Frequency = 0 (keine durchgestrichenen Wörter)
+✅ **Wortabstand-Variation:** ±5% natürliche Variation für realistischeres Schriftbild
+✅ **Platzhalter:** Automatische Ersetzung von [[Platzhalter]]
+✅ **CSV-Export:** Automatische Generierung der Platzhalter-Tabelle
+✅ **Batch-Verarbeitung:** Bis zu 30 Briefe pro Request
+✅ **Preview-Caching:** 2 Stunden Cache für schnellere Finalisierung
+✅ **Rate Limiting:** 2 Requests/Minute Schutz
+
+---
+
+## Output
+
+Die generierten SVG-Dateien befinden sich in:
+- **Preview:** `/app/cache/previews/{sessionId}/`
+- **Finale Bestellung:** `/app/output/{orderNumber}/`
+
+Struktur:
+```
+output/SK-2026-01-02-001/
+├── letter_000.svg
+├── letter_001.svg
+├── placeholders.csv
+└── order-metadata.json
+```
+
+---
+
+## Beispiel Output
+
+**letter_000.svg:**
+```xml
+<svg xmlns="http://www.w3.org/2000/svg"
+     width="210mm"
+     height="297mm"
+     viewBox="0 0 793.8 1122.66">
+  <rect x="0" y="0" width="793.8" height="1122.66" fill="#FFFFFF" />
+  <path d="M1549 1857q-55 73 -124.5 125..."
+        transform="matrix(0.00846,0,0,-0.00846,75.6,120.5)"
+        stroke="#000000"
+        stroke-width="0.6"
+        fill="none"
+        stroke-linecap="round"
+        stroke-linejoin="round" />
+  <!-- ~2000 weitere Pfade für handgeschriebenen Text -->
+</svg>
+```
+
+Dateigröße: ~100-120 KB pro A4-Seite
+
+---
+
+## WordPress Integration Beispiel
+
+```javascript
+// Im WordPress Plugin
+const response = await fetch('https://api.skrift.de/api/preview/batch', {
+  method: 'POST',
+  headers: { 'Content-Type': 'application/json' },
+  body: JSON.stringify({
+    sessionId: generateUUID(),
+    letters: [
+      {
+        index: 0,
+        format: 'a4',
+        font: 'tilda',
+        text: brieftext,
+        placeholders: platzhalterDaten
+      }
+    ]
+  })
+});
+
+const data = await response.json();
+// Zeige Preview: data.files[0].url
+```
+
+---
+
+**Stand:** 2026-01-02
+**Version:** 1.0.0
--- a/Docker/skrift-backend/docker-compose.yml
+++ b/Docker/skrift-backend/docker-compose.yml
@@ -0,0 +1,37 @@
+version: '3.8'
+
+services:
+  skrift-backend:
+    build: .
+    container_name: skrift-backend
+    restart: unless-stopped
+    ports:
+      - "4000:4000"
+    environment:
+      - NODE_ENV=${NODE_ENV:-production}
+      - PORT=4000
+      - SCRIPTALIZER_LICENSE_KEY=${SCRIPTALIZER_LICENSE_KEY}
+      - SCRIPTALIZER_ERR_FREQUENCY=${SCRIPTALIZER_ERR_FREQUENCY:-10}
+      - BATCH_SIZE=${BATCH_SIZE:-30}
+      - CACHE_LIFETIME_HOURS=${CACHE_LIFETIME_HOURS:-2}
+      - RATE_LIMIT_PER_MINUTE=${RATE_LIMIT_PER_MINUTE:-2}
+    volumes:
+      - ./fonts:/app/fonts:ro                    # SVG Fonts (read-only)
+      - skrift-cache:/app/cache                  # Preview cache (temporary)
+      - /var/skrift-output:/app/output           # Output files for N8N
+    networks:
+      - skrift-network
+    healthcheck:
+      test: ["CMD", "wget", "--quiet", "--tries=1", "--spider", "http://localhost:4000/health"]
+      interval: 30s
+      timeout: 3s
+      retries: 3
+      start_period: 5s
+
+volumes:
+  skrift-cache:
+    driver: local
+
+networks:
+  skrift-network:
+    driver: bridge
--- a/Docker/skrift-backend/fonts/alva.svg
+++ b/Docker/skrift-backend/fonts/alva.svg
--- a/Docker/skrift-backend/fonts/ellie.svg
+++ b/Docker/skrift-backend/fonts/ellie.svg
--- a/Docker/skrift-backend/fonts/tilda.svg
+++ b/Docker/skrift-backend/fonts/tilda.svg
--- a/Docker/skrift-backend/package-lock.json
+++ b/Docker/skrift-backend/package-lock.json
--- a/Docker/skrift-backend/package.json
+++ b/Docker/skrift-backend/package.json
@@ -0,0 +1,29 @@
+{
+  "name": "skrift-backend",
+  "version": "1.0.0",
+  "description": "Backend for Skrift handwritten document configurator",
+  "main": "src/server.js",
+  "scripts": {
+    "start": "node src/server.js",
+    "dev": "nodemon src/server.js"
+  },
+  "keywords": [
+    "skrift",
+    "handwriting",
+    "svg",
+    "scriptalizer"
+  ],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "cors": "^2.8.5",
+    "dotenv": "^16.4.5",
+    "express": "^4.19.0",
+    "multer": "^2.0.2",
+    "uuid": "^9.0.1",
+    "xml2js": "^0.6.2"
+  },
+  "devDependencies": {
+    "nodemon": "^3.0.2"
+  }
+}
--- a/Docker/skrift-backend/src/api/controllers/order-controller.js
+++ b/Docker/skrift-backend/src/api/controllers/order-controller.js
@@ -0,0 +1,541 @@
+const fs = require('fs').promises;
+const fsSync = require('fs');
+const path = require('path');
+const config = require('../../config');
+const { scriptalizeBatch } = require('../../services/scriptalizer-service');
+const { generateLetterSVG, generateEnvelopeSVG } = require('../../lib/svg-generator');
+const { replacePlaceholders, generateAllCSVs } = require('../../services/placeholder-service');
+const { TAB_MARKER } = require('../../lib/svg-font-engine');
+
+/**
+ * POST /api/order/finalize
+ * Finalize order by copying cached previews to output directory
+ */
+async function finalizeOrder(req, res, next) {
+  try {
+    const { sessionId, orderNumber } = req.body;
+
+    // Validation
+    if (!sessionId || !orderNumber) {
+      return res.status(400).json({
+        error: 'Invalid request',
+        message: 'sessionId and orderNumber are required'
+      });
+    }
+
+    console.log(`[Order] Finalizing order: ${orderNumber} from session: ${sessionId}`);
+
+    // Check if session cache exists
+    const sessionDir = path.join(config.paths.previews, sessionId);
+
+    try {
+      await fs.access(sessionDir);
+    } catch {
+      return res.status(404).json({
+        error: 'Session not found',
+        message: `Preview cache not found for session: ${sessionId}. Please generate previews first.`
+      });
+    }
+
+    // Check cache expiration
+    const metadataPath = path.join(sessionDir, '.metadata.json');
+    try {
+      const metadataContent = await fs.readFile(metadataPath, 'utf8');
+      const metadata = JSON.parse(metadataContent);
+
+      const expiresAt = new Date(metadata.expiresAt);
+      if (new Date() > expiresAt) {
+        return res.status(410).json({
+          error: 'Cache expired',
+          message: 'Preview cache has expired. Please regenerate previews.',
+          expiredAt: metadata.expiresAt
+        });
+      }
+    } catch (err) {
+      console.warn(`[Order] Metadata not found for session: ${sessionId}`);
+    }
+
+    // Create output directory and subdirectories
+    const outputDir = path.join(config.paths.output, orderNumber);
+    const envelopesDir = path.join(outputDir, 'umschlaege');
+    await fs.mkdir(outputDir, { recursive: true });
+    await fs.mkdir(envelopesDir, { recursive: true });
+
+    // Copy files from cache to output, separating letters and envelopes
+    const files = await fs.readdir(sessionDir);
+    const copiedLetters = [];
+    const copiedEnvelopes = [];
+    const copiedOther = [];
+
+    for (const file of files) {
+      // Skip metadata file
+      if (file === '.metadata.json') {
+        continue;
+      }
+
+      const sourcePath = path.join(sessionDir, file);
+
+      // Determine destination based on file type
+      if (file.startsWith('envelope_')) {
+        // Umschläge in Unterordner 'umschlaege'
+        const destPath = path.join(envelopesDir, file);
+        await fs.copyFile(sourcePath, destPath);
+        copiedEnvelopes.push(file);
+      } else if (file.startsWith('letter_')) {
+        // Briefe im Hauptordner
+        const destPath = path.join(outputDir, file);
+        await fs.copyFile(sourcePath, destPath);
+        copiedLetters.push(file);
+      } else {
+        // Andere Dateien (CSV, etc.) im Hauptordner
+        const destPath = path.join(outputDir, file);
+        await fs.copyFile(sourcePath, destPath);
+        copiedOther.push(file);
+      }
+    }
+
+    // Create order metadata
+    const meta = req.body.metadata || {};
+    const orderMetadata = {
+      orderNumber,
+      sessionId,
+      finalizedAt: new Date().toISOString(),
+      letterCount: copiedLetters.length,
+      envelopeCount: copiedEnvelopes.length,
+      letters: copiedLetters,
+      envelopes: copiedEnvelopes,
+      other: copiedOther,
+      letterFormat: meta.letterFormat || null,
+      envelopeFormat: meta.envelopeFormat || null,
+      envelopeBeschriftung: meta.envelopeBeschriftung || null,
+    };
+
+    const orderMetadataPath = path.join(outputDir, 'order-metadata.json');
+    await fs.writeFile(orderMetadataPath, JSON.stringify(orderMetadata, null, 2), 'utf8');
+
+    const totalFiles = copiedLetters.length + copiedEnvelopes.length + copiedOther.length;
+    console.log(`[Order] Finalized order ${orderNumber}: ${copiedLetters.length} letters, ${copiedEnvelopes.length} envelopes, ${copiedOther.length} other files`);
+
+    // Response
+    res.status(200).json({
+      orderNumber,
+      outputPath: outputDir,
+      letters: copiedLetters,
+      envelopes: copiedEnvelopes,
+      other: copiedOther,
+      totalFiles,
+      envelopesGenerated: 0,
+      timestamp: orderMetadata.finalizedAt
+    });
+
+  } catch (err) {
+    console.error('[Order] Error finalizing order:', err);
+    next(err);
+  }
+}
+
+/**
+ * POST /api/order/generate
+ * Generate order from scratch without using cache
+ */
+async function generateOrder(req, res, next) {
+  try {
+    const { orderNumber, letters } = req.body;
+
+    // Validation
+    if (!orderNumber) {
+      return res.status(400).json({
+        error: 'Invalid request',
+        message: 'orderNumber is required'
+      });
+    }
+
+    if (!letters || !Array.isArray(letters) || letters.length === 0) {
+      return res.status(400).json({
+        error: 'Invalid request',
+        message: 'Letters array is required and must not be empty'
+      });
+    }
+
+    console.log(`[Order] Generating order: ${orderNumber}`);
+    console.log(`[Order] Total documents: ${letters.length}`);
+
+    // Debug: Zeige welche Dokument-Typen ankommen
+    const letterCount = letters.filter(l => l.type !== 'envelope').length;
+    const envelopeCount = letters.filter(l => l.type === 'envelope').length;
+    console.log(`[Order] Letters: ${letterCount}, Envelopes: ${envelopeCount}`);
+    console.log(`[Order] Document types:`, letters.map(l => ({ index: l.index, type: l.type, envelopeType: l.envelopeType })));
+
+    // Create output directory and subdirectories
+    const outputDir = path.join(config.paths.output, orderNumber);
+    const envelopesDir = path.join(outputDir, 'umschlaege');
+    await fs.mkdir(outputDir, { recursive: true });
+    await fs.mkdir(envelopesDir, { recursive: true });
+
+    // Step 1: Prepare texts and replace placeholders
+    const processedLetters = letters.map((letter, loopIndex) => {
+      let text = letter.text || '';
+
+      // Signatur-Platzhalter separat extrahieren – sie werden NICHT als Text ersetzt
+      const sigPlaceholders = {};
+      const nonSigPlaceholders = {};
+      if (letter.placeholders && typeof letter.placeholders === 'object') {
+        Object.entries(letter.placeholders).forEach(([k, v]) => {
+          if (/^signatur\d+$/i.test(k)) sigPlaceholders[k.toLowerCase()] = v;
+          else nonSigPlaceholders[k] = v;
+        });
+        text = replacePlaceholders(text, nonSigPlaceholders);
+      }
+
+      return {
+        ...letter,
+        index: letter.index !== undefined ? letter.index : loopIndex,
+        loopIndex,
+        processedText: text,
+        signatures: sigPlaceholders,
+        format: letter.format || 'a4',
+        font: letter.font || 'tilda',
+        type: letter.type || 'letter',
+        envelopeType: letter.envelopeType || 'recipient',
+        realisticHandwriting: letter.realisticHandwriting ?? false,
+      };
+    });
+
+    // Step 2: Group letters by font for batch scriptalization
+    const lettersByFont = {};
+
+    processedLetters.forEach(letter => {
+      const font = letter.font;
+      if (!lettersByFont[font]) {
+        lettersByFont[font] = [];
+      }
+      lettersByFont[font].push(letter);
+    });
+
+    // Step 3: Scriptalize texts by font
+    const scriptalizedMap = new Map();
+
+    for (const [font, fontLetters] of Object.entries(lettersByFont)) {
+      // Tabs (\t) und Signatur-Marker ([[signaturN]]) vor Scriptalisierung extrahieren,
+      // danach mit TAB_MARKER bzw. [[signaturN]] restaurieren.
+      const scriptalizerInputs = [];
+      const splitMaps = [];
+
+      for (const letter of fontLetters) {
+        const raw = letter.processedText;
+        const parts = raw.split(/(\t|\[\[signatur\d+\]\]|[&|])/gi);
+        const segments = [], markers = [];
+        for (let i = 0; i < parts.length; i++) {
+          if (i % 2 === 0) segments.push(parts[i]);
+          else markers.push(parts[i]);
+        }
+        // Leere Segmente NICHT an den Scriptalizer senden
+        const startIdx = scriptalizerInputs.length;
+        const hasContent = segments.map(s => s.trim().length > 0);
+        segments.forEach((s, j) => { if (hasContent[j]) scriptalizerInputs.push(s); });
+        splitMaps.push({ loopIndex: letter.loopIndex, startIdx, segments, markers, hasContent, fallback: raw });
+      }
+
+      console.log(`[Order] Scriptalizing ${scriptalizerInputs.length} segments with font: ${font}`);
+
+      try {
+        const scriptalizedAll = await scriptalizeBatch(scriptalizerInputs, font, config.scriptalizer.errFrequency);
+
+        for (const { loopIndex, startIdx, segments, markers, hasContent, fallback } of splitMaps) {
+          const nonEmptyCount = hasContent.filter(Boolean).length;
+          if (!nonEmptyCount && !markers.length) { scriptalizedMap.set(loopIndex, fallback); continue; }
+          let si = startIdx;
+          const segs = segments.map((_s, j) => hasContent[j] ? (scriptalizedAll[si++] || '') : '');
+          let reconstructed = segs[0] || '';
+          for (let i = 0; i < markers.length; i++) {
+            reconstructed += (markers[i] === '\t' ? TAB_MARKER : markers[i]);
+            reconstructed += (segs[i + 1] || '');
+          }
+          scriptalizedMap.set(loopIndex, reconstructed);
+        }
+      } catch (err) {
+        console.error(`[Order] Scriptalization failed for font ${font}:`, err.message);
+        return res.status(500).json({
+          error: 'Scriptalization failed',
+          message: `Failed to scriptalize texts with font ${font}: ${err.message}`
+        });
+      }
+    }
+
+    // Step 4: Generate SVG files - separate letters and envelopes
+    const generatedLetters = [];
+    const generatedEnvelopes = [];
+
+    for (let i = 0; i < processedLetters.length; i++) {
+      const letter = processedLetters[i];
+      // Verwende loopIndex für scriptalizedMap Zuordnung
+      const scriptalizedText = scriptalizedMap.get(letter.loopIndex) || letter.processedText;
+
+      let svgResult;
+
+      try {
+        if (letter.type === 'envelope') {
+          svgResult = generateEnvelopeSVG(
+            scriptalizedText,
+            letter.format,
+            letter.envelopeType,
+            { font: letter.font, realisticHandwriting: letter.realisticHandwriting ?? false }
+          );
+        } else {
+          svgResult = generateLetterSVG(
+            scriptalizedText,
+            letter.format,
+            { font: letter.font, realisticHandwriting: letter.realisticHandwriting ?? false, signatures: letter.signatures || {} }
+          );
+        }
+      } catch (err) {
+        console.error(`[Order] SVG generation failed for letter ${i}:`, err.message);
+        return res.status(500).json({
+          error: 'SVG generation failed',
+          message: `Failed to generate SVG for letter ${i}: ${err.message}`
+        });
+      }
+
+      // Save SVG file - unterscheide zwischen Briefen und Umschlägen
+      const absoluteIndex = letter.index !== undefined ? letter.index : i;
+
+      if (letter.type === 'envelope') {
+        const filename = `envelope_${String(absoluteIndex).padStart(3, '0')}.svg`;
+        const filepath = path.join(envelopesDir, filename);
+        await fs.writeFile(filepath, svgResult.svg, 'utf8');
+        generatedEnvelopes.push(filename);
+      } else {
+        const filename = `letter_${String(absoluteIndex).padStart(3, '0')}.svg`;
+        const filepath = path.join(outputDir, filename);
+        await fs.writeFile(filepath, svgResult.svg, 'utf8');
+        generatedLetters.push(filename);
+      }
+    }
+
+    console.log(`[Order] Generated ${generatedLetters.length} letters, ${generatedEnvelopes.length} envelopes`);
+
+    // Step 5: Generate all CSV files if placeholders are present
+    const hasPlaceholders = processedLetters.some(l => l.placeholders && Object.keys(l.placeholders).length > 0);
+    const csvFiles = [];
+
+    if (hasPlaceholders) {
+      try {
+        const csvs = generateAllCSVs(processedLetters);
+
+        // Brief-Platzhalter CSV
+        if (csvs.placeholders) {
+          const filename = 'brief_platzhalter.csv';
+          await fs.writeFile(path.join(outputDir, filename), csvs.placeholders, 'utf8');
+          csvFiles.push(filename);
+          console.log(`[Order] Generated brief_platzhalter.csv`);
+        }
+
+        // Empfänger CSV (für recipientData-Modus)
+        if (csvs.recipients) {
+          const filename = 'empfaenger.csv';
+          await fs.writeFile(path.join(outputDir, filename), csvs.recipients, 'utf8');
+          csvFiles.push(filename);
+          console.log(`[Order] Generated empfaenger.csv`);
+        }
+
+        // Umschlag-Platzhalter CSV (für customText-Modus)
+        if (csvs.envelopePlaceholders) {
+          const filename = 'umschlag_platzhalter.csv';
+          await fs.writeFile(path.join(outputDir, filename), csvs.envelopePlaceholders, 'utf8');
+          csvFiles.push(filename);
+          console.log(`[Order] Generated umschlag_platzhalter.csv`);
+        }
+      } catch (err) {
+        console.error('[Order] CSV generation failed:', err.message);
+        // Don't fail the request, CSV is optional
+      }
+    }
+
+    // Step 6: Create order metadata
+    const meta = req.body.metadata || {};
+    const orderMetadata = {
+      orderNumber,
+      generatedAt: new Date().toISOString(),
+      letterCount: generatedLetters.length,
+      envelopeCount: generatedEnvelopes.length,
+      letters: generatedLetters,
+      envelopes: generatedEnvelopes,
+      fonts: Object.keys(lettersByFont),
+      hasPlaceholders,
+      csvFiles,
+      letterFormat: meta.letterFormat || null,
+      envelopeFormat: meta.envelopeFormat || null,
+      envelopeBeschriftung: meta.envelopeBeschriftung || null,
+    };
+
+    const orderMetadataPath = path.join(outputDir, 'order-metadata.json');
+    await fs.writeFile(orderMetadataPath, JSON.stringify(orderMetadata, null, 2), 'utf8');
+
+    console.log(`[Order] Order ${orderNumber} generated successfully`);
+
+    // Response
+    res.status(200).json({
+      orderNumber,
+      outputPath: outputDir,
+      letters: generatedLetters,
+      envelopes: generatedEnvelopes,
+      csvFiles,
+      totalFiles: generatedLetters.length + generatedEnvelopes.length + csvFiles.length,
+      timestamp: orderMetadata.generatedAt
+    });
+
+  } catch (err) {
+    console.error('[Order] Error generating order:', err);
+    next(err);
+  }
+}
+
+/**
+ * POST /api/order/motif
+ * Upload a motif image for an order
+ */
+async function uploadMotif(req, res, next) {
+  try {
+    const { orderNumber } = req.body;
+
+    // Validation
+    if (!orderNumber) {
+      return res.status(400).json({
+        error: 'Invalid request',
+        message: 'orderNumber is required'
+      });
+    }
+
+    if (!req.file) {
+      return res.status(400).json({
+        error: 'Invalid request',
+        message: 'No file uploaded'
+      });
+    }
+
+    console.log(`[Order] Uploading motif for order: ${orderNumber}`);
+    console.log(`[Order] File: ${req.file.originalname}, Size: ${req.file.size} bytes, Type: ${req.file.mimetype}`);
+
+    // Create output directory if it doesn't exist
+    const outputDir = path.join(config.paths.output, orderNumber);
+    await fs.mkdir(outputDir, { recursive: true });
+
+    // Determine file extension
+    const originalExt = path.extname(req.file.originalname).toLowerCase() || '.png';
+    const filename = `motif${originalExt}`;
+    const filepath = path.join(outputDir, filename);
+
+    // Write file to disk
+    await fs.writeFile(filepath, req.file.buffer);
+
+    console.log(`[Order] Motif saved to: ${filepath}`);
+
+    // Response
+    res.status(200).json({
+      success: true,
+      orderNumber,
+      filename,
+      path: filepath,
+      size: req.file.size,
+      mimetype: req.file.mimetype
+    });
+
+  } catch (err) {
+    console.error('[Order] Error uploading motif:', err);
+    next(err);
+  }
+}
+
+/**
+ * POST /api/order/files
+ * Speichert eine bereits vom WordPress-Frontend hochgeladene Datei
+ * (Adress-/Platzhalter-Excel, Briefdokument) im Auftragsordner ab,
+ * damit sie zusammen mit den generierten Umschlägen vorliegt.
+ */
+async function uploadOrderFile(req, res, next) {
+  try {
+    const { orderNumber, fileType } = req.body;
+
+    if (!orderNumber || !fileType) {
+      return res.status(400).json({
+        error: 'Invalid request',
+        message: 'orderNumber and fileType are required'
+      });
+    }
+
+    if (!req.file) {
+      return res.status(400).json({
+        error: 'Invalid request',
+        message: 'No file uploaded'
+      });
+    }
+
+    const outputDir = path.join(config.paths.output, orderNumber, 'dateien');
+    await fs.mkdir(outputDir, { recursive: true });
+
+    const ext      = path.extname(req.file.originalname) || '';
+    const filename = `${fileType}${ext}`;
+    const filepath = path.join(outputDir, filename);
+
+    await fs.writeFile(filepath, req.file.buffer);
+
+    console.log(`[Order] File saved for order ${orderNumber}: ${filename}`);
+
+    res.status(200).json({
+      success: true,
+      orderNumber,
+      fileType,
+      filename,
+      path: filepath,
+      size: req.file.size,
+    });
+
+  } catch (err) {
+    console.error('[Order] Error saving order file:', err);
+    next(err);
+  }
+}
+
+/**
+ * POST /api/order/register
+ * Speichert Metadaten für einen Auftrag ohne SVG-Generierung (z.B. gedruckte Briefe)
+ */
+async function registerOrder(req, res, next) {
+  try {
+    const { orderNumber, metadata } = req.body;
+
+    if (!orderNumber) {
+      return res.status(400).json({ error: 'Invalid request', message: 'orderNumber is required' });
+    }
+
+    const outputDir = path.join(config.paths.output, orderNumber);
+    await fs.mkdir(outputDir, { recursive: true });
+
+    const orderMetadata = {
+      orderNumber,
+      registeredAt: new Date().toISOString(),
+      ...(metadata || {}),
+    };
+
+    await fs.writeFile(
+      path.join(outputDir, 'order-metadata.json'),
+      JSON.stringify(orderMetadata, null, 2),
+      'utf8'
+    );
+
+    console.log(`[Order] Registered order ${orderNumber}`);
+    res.status(200).json({ orderNumber, registeredAt: orderMetadata.registeredAt });
+
+  } catch (err) {
+    console.error('[Order] Error registering order:', err);
+    next(err);
+  }
+}
+
+module.exports = {
+  finalizeOrder,
+  generateOrder,
+  uploadMotif,
+  uploadOrderFile,
+  registerOrder,
+};
--- a/Docker/skrift-backend/src/api/controllers/preview-controller.js
+++ b/Docker/skrift-backend/src/api/controllers/preview-controller.js
@@ -0,0 +1,362 @@
+const fs = require("fs").promises;
+const fsSync = require("fs");
+const path = require("path");
+const { v4: uuidv4 } = require("uuid");
+const config = require("../../config");
+const { scriptalizeBatch } = require("../../services/scriptalizer-service");
+const {
+  generateLetterSVG,
+  generateEnvelopeSVG,
+} = require("../../lib/svg-generator");
+const {
+  replacePlaceholders,
+  generateAllCSVs,
+} = require("../../services/placeholder-service");
+const { TAB_MARKER } = require("../../lib/svg-font-engine");
+
+/**
+ * POST /api/preview/batch
+ * Generate preview batch with rate limiting
+ */
+async function generateBatch(req, res, next) {
+  try {
+    const { sessionId, letters } = req.body;
+
+    // Validation
+    if (!letters || !Array.isArray(letters) || letters.length === 0) {
+      return res.status(400).json({
+        error: "Invalid request",
+        message: "Letters array is required and must not be empty",
+      });
+    }
+
+    // KEIN Limit mehr - Frontend sendet ALLE Dokumente auf einmal
+    // Backend teilt sie intern in 25er Batches für Scriptalizer auf
+    console.log(`[Preview] Received ${letters.length} letters (no limit)`);
+
+    // Optional: Warn if extremely large
+    if (letters.length > 1000) {
+      console.warn(`[Preview] Large batch detected: ${letters.length} letters`);
+    }
+
+    // Generate or validate sessionId
+    const finalSessionId = sessionId || uuidv4();
+
+    console.log(
+      `[Preview] Starting batch generation for session: ${finalSessionId}`
+    );
+    console.log(`[Preview] Batch size: ${letters.length} letters`);
+
+    // Create session cache directory
+    const sessionDir = path.join(config.paths.previews, finalSessionId);
+    await fs.mkdir(sessionDir, { recursive: true });
+
+    // Step 1: Prepare texts and replace placeholders
+    console.log(
+      "[Preview] Received indices from frontend:",
+      letters.map((l) => l.index)
+    );
+
+    const processedLetters = letters.map((letter, loopIndex) => {
+      let text = letter.text || "";
+
+      // Signatur-Platzhalter separat extrahieren – sie werden NICHT als Text ersetzt
+      const sigPlaceholders = {};
+      const nonSigPlaceholders = {};
+      if (letter.placeholders && typeof letter.placeholders === "object") {
+        Object.entries(letter.placeholders).forEach(([k, v]) => {
+          if (/^signatur\d+$/i.test(k)) sigPlaceholders[k.toLowerCase()] = v;
+          else nonSigPlaceholders[k] = v;
+        });
+        text = replacePlaceholders(text, nonSigPlaceholders);
+      }
+
+      return {
+        ...letter,
+        index: letter.index !== undefined ? letter.index : loopIndex,
+        processedText: text,
+        signatures: sigPlaceholders,
+        format: letter.format || "a4",
+        font: letter.font || "tilda",
+        type: letter.type || "letter",
+        envelopeType: letter.envelopeType || "recipient",
+        realisticHandwriting: letter.realisticHandwriting ?? false,
+      };
+    });
+
+    console.log(
+      "[Preview] Final indices being used for files:",
+      processedLetters.map((l) => l.index)
+    );
+
+    // Step 2: Batch scriptalize texts.
+    // Tabs (\t) und Signatur-Marker ([[signaturN]]) werden vor der Scriptalisierung
+    // extrahiert, anschliessend wieder restauriert (TAB_MARKER für Tabs, {{signaturN}} unverändert).
+    const font = processedLetters[0]?.font || "tilda";
+    const scriptalizerInputs = [];
+    const splitMaps = []; // pro Brief: { segments[], markers[] }
+
+    for (const letter of processedLetters) {
+      const raw = letter.processedText;
+      // Splitten an \t UND [[signaturN]] (mit capture-Gruppe → Marker bleiben erhalten)
+      const parts = raw.split(/(\t|\[\[signatur\d+\]\]|[&|])/gi);
+      const segments = [], markers = [];
+      for (let i = 0; i < parts.length; i++) {
+        if (i % 2 === 0) segments.push(parts[i]);
+        else markers.push(parts[i]);
+      }
+      // Leere Segmente NICHT an den Scriptalizer senden (API könnte sie ablehnen)
+      const startIdx = scriptalizerInputs.length;
+      const hasContent = segments.map(s => s.trim().length > 0);
+      segments.forEach((s, j) => { if (hasContent[j]) scriptalizerInputs.push(s); });
+      splitMaps.push({ startIdx, segments, markers, hasContent });
+    }
+
+    console.log(
+      `[Preview] Scriptalizing ${scriptalizerInputs.length} segments with font: ${font}`
+    );
+
+    let scriptalizedAll;
+    try {
+      scriptalizedAll = await scriptalizeBatch(
+        scriptalizerInputs,
+        font,
+        config.scriptalizer.errFrequency
+      );
+    } catch (err) {
+      console.error("[Preview] Scriptalization failed:", err.message);
+      return res.status(500).json({
+        error: "Scriptalization failed",
+        message: err.message,
+      });
+    }
+
+    // Segmente und Marker wieder zusammensetzen; \t → TAB_MARKER, [[signaturN]] unverändert
+    // Leere Segmente werden als '' wiederhergestellt (wurden nicht scriptalisiert)
+    const scriptalizedTexts = splitMaps.map(({ startIdx, segments, markers, hasContent }) => {
+      let si = startIdx;
+      const segs = segments.map((_s, j) => hasContent[j] ? (scriptalizedAll[si++] || '') : '');
+      let result = segs[0] || '';
+      for (let i = 0; i < markers.length; i++) {
+        result += (markers[i] === '\t' ? TAB_MARKER : markers[i]);
+        result += (segs[i + 1] || '');
+      }
+      return result;
+    });
+
+    if (scriptalizedTexts.length !== processedLetters.length) {
+      console.warn(
+        `[Preview] Scriptalization mismatch: expected ${processedLetters.length}, got ${scriptalizedTexts.length}`
+      );
+    }
+
+    // Step 3: Generate SVG files
+    const files = [];
+    let hasOverflow = false;
+
+    for (let i = 0; i < processedLetters.length; i++) {
+      const letter = processedLetters[i];
+      const scriptalizedText = scriptalizedTexts[i] || letter.processedText;
+
+      let svgResult;
+
+      try {
+        if (letter.type === "envelope") {
+          svgResult = generateEnvelopeSVG(
+            scriptalizedText,
+            letter.format,
+            letter.envelopeType,
+            { font: letter.font, realisticHandwriting: letter.realisticHandwriting ?? false }
+          );
+        } else {
+          // Briefe: Zeileninfo mit zurückgeben
+          svgResult = generateLetterSVG(scriptalizedText, letter.format, {
+            font: letter.font,
+            realisticHandwriting: letter.realisticHandwriting ?? false,
+            signatures: letter.signatures || {},
+          });
+        }
+      } catch (err) {
+        console.error(
+          `[Preview] SVG generation failed for letter ${i}:`,
+          err.message
+        );
+        return res.status(500).json({
+          error: "SVG generation failed",
+          message: `Failed to generate SVG for letter ${i}: ${err.message}`,
+        });
+      }
+
+      // Track overflow
+      if (svgResult.overflow) {
+        hasOverflow = true;
+        console.log(`[Preview] Letter ${i} has overflow: ${svgResult.lineCount}/${svgResult.lineLimit} lines`);
+      }
+
+      // Save SVG file - verwende den absoluten Index aus letter
+      // Unterscheide zwischen Briefen und Umschlägen im Dateinamen
+      const absoluteIndex = letter.index !== undefined ? letter.index : i;
+      const prefix = letter.type === 'envelope' ? 'envelope' : 'letter';
+      const filename = `${prefix}_${String(absoluteIndex).padStart(3, "0")}.svg`;
+      const filepath = path.join(sessionDir, filename);
+
+      await fs.writeFile(filepath, svgResult.svg, "utf8");
+
+      // Empfänger-Info für bessere Fehlermeldung
+      const recipientName = letter.placeholders?.name || letter.placeholders?.vorname || `Brief ${absoluteIndex + 1}`;
+
+      files.push({
+        index: absoluteIndex,
+        filename,
+        url: `/api/preview/${finalSessionId}/${filename}`,
+        lineCount: svgResult.lineCount,
+        lineLimit: svgResult.lineLimit,
+        overflow: svgResult.overflow,
+        recipientName: letter.type !== 'envelope' ? recipientName : null,
+      });
+    }
+
+    console.log(`[Preview] Generated ${files.length} SVG files`);
+
+    // Step 4: Generate all CSV files (placeholders, recipients, envelope placeholders, free addresses)
+    const csvUrls = {};
+    const hasPlaceholders = processedLetters.some((l) => l.placeholders && Object.keys(l.placeholders).length > 0);
+    const hasFreeAddresses = processedLetters.some((l) => l.type === 'envelope' && l.envelopeType === 'free');
+
+    if (hasPlaceholders || hasFreeAddresses) {
+      try {
+        const csvs = generateAllCSVs(processedLetters);
+
+        // Brief-Platzhalter CSV
+        if (csvs.placeholders) {
+          const filename = "brief_platzhalter.csv";
+          await fs.writeFile(path.join(sessionDir, filename), csvs.placeholders, "utf8");
+          csvUrls.placeholders = `/api/preview/${finalSessionId}/${filename}`;
+          console.log(`[Preview] Generated brief_platzhalter.csv`);
+        }
+
+        // Empfänger CSV (für recipientData-Modus)
+        if (csvs.recipients) {
+          const filename = "empfaenger.csv";
+          await fs.writeFile(path.join(sessionDir, filename), csvs.recipients, "utf8");
+          csvUrls.recipients = `/api/preview/${finalSessionId}/${filename}`;
+          console.log(`[Preview] Generated empfaenger.csv`);
+        }
+
+        // Umschlag-Platzhalter CSV (für customText-Modus)
+        if (csvs.envelopePlaceholders) {
+          const filename = "umschlag_platzhalter.csv";
+          await fs.writeFile(path.join(sessionDir, filename), csvs.envelopePlaceholders, "utf8");
+          csvUrls.envelopePlaceholders = `/api/preview/${finalSessionId}/${filename}`;
+          console.log(`[Preview] Generated umschlag_platzhalter.csv`);
+        }
+
+        // Freie Adressen CSV (für free-Modus)
+        if (csvs.freeAddresses) {
+          const filename = "freie_adressen.csv";
+          await fs.writeFile(path.join(sessionDir, filename), csvs.freeAddresses, "utf8");
+          csvUrls.freeAddresses = `/api/preview/${finalSessionId}/${filename}`;
+          console.log(`[Preview] Generated freie_adressen.csv`);
+        }
+      } catch (err) {
+        console.error("[Preview] CSV generation failed:", err.message);
+        // Don't fail the request, CSV is optional
+      }
+    }
+
+    // Step 5: Save session metadata (no expiration)
+    const metadataPath = path.join(sessionDir, ".metadata.json");
+    const metadata = {
+      sessionId: finalSessionId,
+      createdAt: new Date().toISOString(),
+      letterCount: files.length,
+      font,
+      hasPlaceholders,
+    };
+
+    await fs.writeFile(metadataPath, JSON.stringify(metadata, null, 2), "utf8");
+
+    console.log(
+      `[Preview] Batch generation complete for session: ${finalSessionId}`
+    );
+
+    // Response
+    res.status(200).json({
+      sessionId: finalSessionId,
+      files,
+      csvUrls,
+      hasOverflow,
+      overflowFiles: files.filter(f => f.overflow),
+    });
+  } catch (err) {
+    console.error("[Preview] Unexpected error:", err);
+    next(err);
+  }
+}
+
+/**
+ * GET /api/preview/:sessionId/:filename
+ * Serve cached preview files
+ */
+async function servePreview(req, res, next) {
+  try {
+    const { sessionId, filename } = req.params;
+
+    // Validate inputs
+    if (!sessionId || !filename) {
+      return res.status(400).json({
+        error: "Invalid request",
+        message: "sessionId and filename are required",
+      });
+    }
+
+    // Prevent directory traversal
+    const sanitizedFilename = path.basename(filename);
+    const filePath = path.join(
+      config.paths.previews,
+      sessionId,
+      sanitizedFilename
+    );
+
+    // Check if file exists
+    try {
+      await fs.access(filePath);
+    } catch {
+      return res.status(404).json({
+        error: "File not found",
+        message: `Preview file not found: ${sanitizedFilename}`,
+      });
+    }
+
+    // No cache expiration check - files are served until manually deleted
+
+    // Determine content type
+    const ext = path.extname(sanitizedFilename).toLowerCase();
+    let contentType = "application/octet-stream";
+
+    if (ext === ".svg") {
+      contentType = "image/svg+xml";
+    } else if (ext === ".csv") {
+      contentType = "text/csv";
+    }
+
+    // Serve file - NO CACHING
+    res.setHeader("Content-Type", contentType);
+    res.setHeader("Cache-Control", "no-store, no-cache, must-revalidate, proxy-revalidate");
+    res.setHeader("Pragma", "no-cache");
+    res.setHeader("Expires", "0");
+
+    const fileContent = await fs.readFile(filePath);
+    res.send(fileContent);
+  } catch (err) {
+    console.error("[Preview] Error serving file:", err);
+    next(err);
+  }
+}
+
+// No automatic cache cleanup - files are kept until manually deleted
+
+module.exports = {
+  generateBatch,
+  servePreview,
+};
--- a/Docker/skrift-backend/src/api/middleware/auth.js
+++ b/Docker/skrift-backend/src/api/middleware/auth.js
@@ -0,0 +1,72 @@
+/**
+ * Authentication Middleware
+ * Validiert API-Token in Request-Headers
+ */
+
+const config = require('../../config');
+
+/**
+ * Middleware: API-Token validieren
+ */
+function authenticateApiToken(req, res, next) {
+  // API-Token aus Umgebungsvariablen
+  const validToken = config.auth.apiToken;
+
+  // Wenn kein Token konfiguriert ist, alle Requests erlauben (Development)
+  if (!validToken) {
+    console.warn('[Auth] WARNING: No API token configured - authentication disabled!');
+    return next();
+  }
+
+  // Token aus verschiedenen Quellen prüfen
+  const token =
+    req.headers['x-api-token'] ||           // Custom Header
+    req.headers['authorization']?.replace('Bearer ', '') ||  // Bearer Token
+    req.query.api_token;                    // Query Parameter (nur für Tests)
+
+  // Kein Token vorhanden
+  if (!token) {
+    return res.status(401).json({
+      error: 'Unauthorized',
+      message: 'API token required. Please provide X-API-Token header or Authorization: Bearer <token>',
+    });
+  }
+
+  // Token validieren
+  if (token !== validToken) {
+    return res.status(403).json({
+      error: 'Forbidden',
+      message: 'Invalid API token',
+    });
+  }
+
+  // Token ist gültig
+  next();
+}
+
+/**
+ * Optionale Authentifizierung - Warnung aber kein Fehler
+ */
+function optionalAuth(req, res, next) {
+  const validToken = config.auth.apiToken;
+
+  if (!validToken) {
+    return next();
+  }
+
+  const token =
+    req.headers['x-api-token'] ||
+    req.headers['authorization']?.replace('Bearer ', '') ||
+    req.query.api_token;
+
+  if (!token || token !== validToken) {
+    console.warn('[Auth] Unauthenticated request to', req.path);
+  }
+
+  next();
+}
+
+module.exports = {
+  authenticateApiToken,
+  optionalAuth,
+};
--- a/Docker/skrift-backend/src/api/middleware/error-handler.js
+++ b/Docker/skrift-backend/src/api/middleware/error-handler.js
@@ -0,0 +1,13 @@
+module.exports = (err, req, res, next) => {
+  console.error('Error occurred:', err);
+
+  const statusCode = err.statusCode || 500;
+  const message = err.message || 'Internal Server Error';
+
+  res.status(statusCode).json({
+    error: {
+      message,
+      ...(process.env.NODE_ENV === 'development' && { stack: err.stack })
+    }
+  });
+};
--- a/Docker/skrift-backend/src/api/middleware/rate-limiter.js
+++ b/Docker/skrift-backend/src/api/middleware/rate-limiter.js
@@ -0,0 +1,53 @@
+const config = require('../../config');
+
+// Simple in-memory rate limiter
+const rateLimitStore = new Map();
+
+// Cleanup old entries every minute
+setInterval(() => {
+  const now = Date.now();
+  const oneMinute = 60 * 1000;
+
+  for (const [key, data] of rateLimitStore.entries()) {
+    if (now - data.windowStart > oneMinute) {
+      rateLimitStore.delete(key);
+    }
+  }
+}, 60 * 1000);
+
+module.exports = (req, res, next) => {
+  const sessionId = req.body.sessionId || req.params.sessionId || 'anonymous';
+  const now = Date.now();
+  const oneMinute = 60 * 1000;
+
+  let rateData = rateLimitStore.get(sessionId);
+
+  if (!rateData || now - rateData.windowStart > oneMinute) {
+    // New window
+    rateData = {
+      windowStart: now,
+      requests: []
+    };
+    rateLimitStore.set(sessionId, rateData);
+  }
+
+  // Remove requests older than 1 minute
+  rateData.requests = rateData.requests.filter(timestamp => now - timestamp < oneMinute);
+
+  // Check limit
+  if (rateData.requests.length >= config.preview.rateLimitPerMinute) {
+    const oldestRequest = Math.min(...rateData.requests);
+    const retryAfter = Math.ceil((oneMinute - (now - oldestRequest)) / 1000);
+
+    return res.status(429).json({
+      error: 'Zu viele Vorschau-Anfragen. Bitte warten Sie.',
+      retryAfter,
+      message: `Limit: ${config.preview.rateLimitPerMinute} Anfragen pro Minute`
+    });
+  }
+
+  // Add current request
+  rateData.requests.push(now);
+
+  next();
+};
--- a/Docker/skrift-backend/src/api/middleware/request-logger.js
+++ b/Docker/skrift-backend/src/api/middleware/request-logger.js
@@ -0,0 +1,14 @@
+module.exports = (req, res, next) => {
+  const start = Date.now();
+
+  res.on('finish', () => {
+    const duration = Date.now() - start;
+    const timestamp = new Date().toISOString();
+
+    console.log(
+      `[${timestamp}] ${req.method} ${req.path} - ${res.statusCode} (${duration}ms)`
+    );
+  });
+
+  next();
+};
--- a/Docker/skrift-backend/src/api/routes/health-routes.js
+++ b/Docker/skrift-backend/src/api/routes/health-routes.js
@@ -0,0 +1,34 @@
+const express = require('express');
+const router = express.Router();
+const fs = require('fs');
+const config = require('../../config');
+
+router.get('/', (req, res) => {
+  const health = {
+    status: 'healthy',
+    timestamp: new Date().toISOString(),
+    uptime: process.uptime(),
+    scriptalizer: config.scriptalizer.licenseKey ? 'configured' : 'missing',
+    storage: {
+      cache: fs.existsSync(config.paths.cache) && isWritable(config.paths.cache),
+      output: fs.existsSync(config.paths.output) && isWritable(config.paths.output)
+    }
+  };
+
+  const allHealthy = health.scriptalizer === 'configured' &&
+                     health.storage.cache &&
+                     health.storage.output;
+
+  res.status(allHealthy ? 200 : 503).json(health);
+});
+
+function isWritable(path) {
+  try {
+    fs.accessSync(path, fs.constants.W_OK);
+    return true;
+  } catch {
+    return false;
+  }
+}
+
+module.exports = router;
--- a/Docker/skrift-backend/src/api/routes/order-routes.js
+++ b/Docker/skrift-backend/src/api/routes/order-routes.js
@@ -0,0 +1,135 @@
+const express = require('express');
+const router = express.Router();
+const multer = require('multer');
+const orderController = require('../controllers/order-controller');
+const { authenticateApiToken } = require('../middleware/auth');
+
+// Max. Uploadgröße für Auftragsdateien (Brief-PDF, Adress-/Platzhalter-Tabellen).
+// 10 MB reichten für hochauflösende bzw. gescannte Brief-PDFs nicht aus – multer
+// verwarf die Datei still, bevor der Controller lief.
+const MAX_UPLOAD_BYTES = 120 * 1024 * 1024; // 120MB
+
+// Multer konfigurieren für Datei-Uploads (temporär im Speicher)
+const upload = multer({
+  storage: multer.memoryStorage(),
+  limits: {
+    fileSize: MAX_UPLOAD_BYTES,
+  },
+  fileFilter: (req, file, cb) => {
+    // Erlaubte Dateitypen
+    const allowedTypes = ['image/png', 'image/jpeg', 'image/webp', 'image/svg+xml', 'application/pdf'];
+    const allowedExts = ['.png', '.jpg', '.jpeg', '.webp', '.svg', '.pdf'];
+
+    const ext = file.originalname.toLowerCase().substring(file.originalname.lastIndexOf('.'));
+
+    if (allowedTypes.includes(file.mimetype) || allowedExts.includes(ext)) {
+      cb(null, true);
+    } else {
+      cb(new Error('Nur PNG, JPG, WEBP, SVG und PDF Dateien sind erlaubt'), false);
+    }
+  }
+});
+
+/**
+ * POST /api/order/finalize
+ * Finalize order by copying cached previews to output directory
+ *
+ * Request body:
+ * {
+ *   sessionId: string,
+ *   orderNumber: string
+ * }
+ *
+ * Response:
+ * {
+ *   orderNumber: string,
+ *   outputPath: string,
+ *   files: string[],
+ *   timestamp: string
+ * }
+ */
+router.post('/finalize', authenticateApiToken, orderController.finalizeOrder);
+
+/**
+ * POST /api/order/generate
+ * Generate order from scratch without using cache
+ *
+ * Request body:
+ * {
+ *   orderNumber: string,
+ *   letters: [
+ *     {
+ *       text: string,
+ *       format: 'a4' | 'a6p' | 'a6l' | 'c6' | 'din_lang',
+ *       font: 'tilda' | 'alva' | 'ellie',
+ *       type?: 'letter' | 'envelope',
+ *       envelopeType?: 'recipient' | 'custom',
+ *       placeholders?: { [key: string]: string }
+ *     }
+ *   ]
+ * }
+ *
+ * Response:
+ * {
+ *   orderNumber: string,
+ *   outputPath: string,
+ *   files: string[],
+ *   timestamp: string
+ * }
+ */
+router.post('/generate', authenticateApiToken, orderController.generateOrder);
+
+/**
+ * POST /api/order/motif
+ * Upload a motif image for an order
+ *
+ * Request: multipart/form-data
+ * - motif: file (PNG, JPG, WEBP, SVG, PDF)
+ * - orderNumber: string
+ *
+ * Response:
+ * {
+ *   success: boolean,
+ *   filename: string,
+ *   path: string
+ * }
+ */
+router.post('/motif', authenticateApiToken, upload.single('motif'), orderController.uploadMotif);
+
+// Multer für Auftragsdateien (Adress-/Platzhalter-Excel, Briefdokument)
+const uploadOrderFile = multer({
+  storage: multer.memoryStorage(),
+  limits: {
+    fileSize: MAX_UPLOAD_BYTES,
+  },
+  fileFilter: (req, file, cb) => {
+    const allowedExts = ['.xlsx', '.xls', '.csv', '.pdf', '.doc', '.docx'];
+    const ext = file.originalname.toLowerCase().substring(file.originalname.lastIndexOf('.'));
+
+    if (allowedExts.includes(ext)) {
+      cb(null, true);
+    } else {
+      cb(new Error('Nur XLSX, XLS, CSV, PDF, DOC oder DOCX Dateien sind erlaubt'), false);
+    }
+  }
+});
+
+/**
+ * POST /api/order/files
+ * Speichert eine bereits vom WordPress-Frontend hochgeladene Datei
+ * (Adresse, Platzhalter, Brief, Brief-Excel) im Auftragsordner
+ *
+ * Request: multipart/form-data
+ * - file: file (XLSX, XLS, CSV, PDF, DOC, DOCX)
+ * - orderNumber: string
+ * - fileType: 'adresse' | 'platzhalter' | 'brief' | 'brief_excel'
+ */
+router.post('/files', authenticateApiToken, uploadOrderFile.single('file'), orderController.uploadOrderFile);
+
+/**
+ * POST /api/order/register
+ * Metadaten-Auftrag ohne SVG-Generierung (gedruckte Briefe)
+ */
+router.post('/register', authenticateApiToken, orderController.registerOrder);
+
+module.exports = router;
--- a/Docker/skrift-backend/src/api/routes/preview-routes.js
+++ b/Docker/skrift-backend/src/api/routes/preview-routes.js
@@ -0,0 +1,47 @@
+const express = require('express');
+const router = express.Router();
+const previewController = require('../controllers/preview-controller');
+const { authenticateApiToken } = require('../middleware/auth');
+
+/**
+ * POST /api/preview/batch
+ * Generate preview batch (no rate limiting, no batch size limit)
+ * Backend automatically splits into 25-letter batches for Scriptalizer API
+ *
+ * Request body:
+ * {
+ *   sessionId: string,
+ *   letters: [
+ *     {
+ *       text: string,
+ *       format: 'a4' | 'a6p' | 'a6l' | 'c6' | 'din_lang',
+ *       font: 'tilda' | 'alva' | 'ellie',
+ *       type?: 'letter' | 'envelope',
+ *       envelopeType?: 'recipient' | 'custom',
+ *       placeholders?: { [key: string]: string }
+ *     }
+ *   ]
+ * }
+ *
+ * Response:
+ * {
+ *   sessionId: string,
+ *   files: [
+ *     {
+ *       index: number,
+ *       filename: string,
+ *       url: string
+ *     }
+ *   ],
+ *   csvUrl?: string
+ * }
+ */
+router.post('/batch', authenticateApiToken, previewController.generateBatch);
+
+/**
+ * GET /api/preview/:sessionId/:filename
+ * Serve cached preview SVG files
+ */
+router.get('/:sessionId/:filename', previewController.servePreview);
+
+module.exports = router;
--- a/Docker/skrift-backend/src/config/index.js
+++ b/Docker/skrift-backend/src/config/index.js
@@ -0,0 +1,53 @@
+require('dotenv').config();
+const path = require('path');
+
+const isProduction = process.env.NODE_ENV === 'production';
+
+module.exports = {
+  env: process.env.NODE_ENV || 'development',
+  port: parseInt(process.env.PORT, 10) || 4000,
+
+  scriptalizer: {
+    licenseKey: process.env.SCRIPTALIZER_LICENSE_KEY,
+    errFrequency: parseInt(process.env.SCRIPTALIZER_ERR_FREQUENCY, 10) || 0,
+    endpoint: 'https://www.scriptalizer.co.uk/QuantumScriptalize.asmx/Scriptalize',
+    fontMap: {
+      tilda: 'PremiumUltra79',
+      alva: 'PremiumUltra23',
+      ellie: 'PremiumUltra39'
+    },
+    separator: '|||',  // Triple pipe separator (tested and working)
+    maxInputSize: 48000  // 48KB limit
+  },
+
+  preview: {
+    // No batch size limit - frontend can send any number of letters
+    // Backend splits into 25-letter batches for Scriptalizer API internally
+    scriptalizerBatchSize: 25
+    // No cache lifetime - files are kept until manually cleaned
+    // No rate limiting
+  },
+
+  paths: {
+    cache: isProduction ? '/app/cache' : path.join(__dirname, '../../cache'),
+    previews: isProduction ? '/app/cache/previews' : path.join(__dirname, '../../cache/previews'),
+    output: isProduction ? '/app/output' : path.join(__dirname, '../../output'),
+    fonts: isProduction ? '/app/fonts' : path.join(__dirname, '../../fonts')
+  },
+
+  cors: {
+    origin: process.env.CORS_ORIGIN || '*',
+    credentials: true
+  },
+
+  auth: {
+    apiToken: process.env.API_TOKEN || null
+  },
+
+  paypal: {
+    clientId: process.env.PAYPAL_CLIENT_ID || '',
+    clientSecret: process.env.PAYPAL_CLIENT_SECRET || '',
+    // 'sandbox' oder 'live'
+    environment: process.env.PAYPAL_ENVIRONMENT || 'sandbox'
+  }
+};
--- a/Docker/skrift-backend/src/lib/page-layout.js
+++ b/Docker/skrift-backend/src/lib/page-layout.js
@@ -0,0 +1,124 @@
+const PX_PER_MM = 3.78; // 96dpi
+const FONT_SIZE_PX = 26;
+
+// Maximale Zeilenanzahl pro Format (für Textvalidierung)
+const LINE_LIMITS = {
+  a4: 27,
+  a6p: 14,
+  a6l: 11,
+};
+
+// Layout Konfiguration pro Format + Orientation
+const FORMAT_LAYOUTS = {
+  // A4 Hochformat
+  a4: {
+    marginTopMm: 25,
+    marginLeftMm: 20,
+    lineHeightFactor: 1.35,
+  },
+
+  // A6 Hochformat
+  a6p: {
+    marginTopMm: 8,
+    marginLeftMm: 8,
+    lineHeightFactor: 1.3,
+  },
+
+  // A6 Querformat (landscape)
+  a6l: {
+    marginTopMm: 8,
+    marginLeftMm: 8,
+    marginRightMm: 14,
+    lineHeightFactor: 1.2,
+  },
+
+  // DIN Lang Kuvert (Querformat)
+  din_lang: {
+    marginTopMm: 50,
+    marginLeftMm: 10,  // Links unten in Ecke
+    lineHeightFactor: 1.2,
+  },
+
+  // C6 Kuvert (Querformat)
+  c6: {
+    marginTopMm: 60,
+    marginLeftMm: 10,  // Links unten in Ecke
+    lineHeightFactor: 1.2,
+  },
+};
+
+// Seiten-Dimensionen
+const PAGE_FORMATS = {
+  a4: { widthMm: 210, heightMm: 297 },
+  a6p: { widthMm: 105, heightMm: 148 },
+  a6l: { widthMm: 148, heightMm: 105 },  // Querformat: getauscht
+  din_lang: { widthMm: 220, heightMm: 110 },
+  c6: { widthMm: 162, heightMm: 114 },
+};
+
+// mm in Pixel umrechnen
+function mmToPx(mm) {
+  return mm * PX_PER_MM;
+}
+
+// Layout für Format holen
+function getLayoutForFormat(format) {
+  const normalizedFormat = String(format).toLowerCase();
+  const layoutConfig = FORMAT_LAYOUTS[normalizedFormat];
+
+  if (!layoutConfig) {
+    // Fallback auf a4
+    return {
+      marginTopPx: mmToPx(FORMAT_LAYOUTS.a4.marginTopMm),
+      marginLeftPx: mmToPx(FORMAT_LAYOUTS.a4.marginLeftMm),
+      lineHeightPx: FONT_SIZE_PX * FORMAT_LAYOUTS.a4.lineHeightFactor,
+    };
+  }
+
+  return {
+    marginTopPx: mmToPx(layoutConfig.marginTopMm),
+    marginLeftPx: mmToPx(layoutConfig.marginLeftMm),
+    marginRightPx: layoutConfig.marginRightMm ? mmToPx(layoutConfig.marginRightMm) : null,
+    lineHeightPx: FONT_SIZE_PX * layoutConfig.lineHeightFactor,
+  };
+}
+
+// Seiten-Dimensionen holen
+function getPageDimensions(format) {
+  const normalizedFormat = String(format).toLowerCase();
+  const dimensions = PAGE_FORMATS[normalizedFormat] || PAGE_FORMATS.a4;
+
+  return {
+    widthMm: dimensions.widthMm,
+    heightMm: dimensions.heightMm,
+    widthPx: mmToPx(dimensions.widthMm),
+    heightPx: mmToPx(dimensions.heightMm),
+  };
+}
+
+// XML Escaping
+function escapeXml(str) {
+  return String(str)
+    .replace(/&/g, '&amp;')
+    .replace(/</g, '&lt;')
+    .replace(/>/g, '&gt;');
+}
+
+// Zeilenlimit für Format holen
+function getLineLimit(format) {
+  const normalizedFormat = String(format).toLowerCase();
+  return LINE_LIMITS[normalizedFormat] || LINE_LIMITS.a4;
+}
+
+module.exports = {
+  PX_PER_MM,
+  FONT_SIZE_PX,
+  FORMAT_LAYOUTS,
+  PAGE_FORMATS,
+  LINE_LIMITS,
+  mmToPx,
+  getLayoutForFormat,
+  getPageDimensions,
+  getLineLimit,
+  escapeXml
+};
--- a/Docker/skrift-backend/src/lib/svg-font-engine.js
+++ b/Docker/skrift-backend/src/lib/svg-font-engine.js
@@ -0,0 +1,283 @@
+const fs = require('fs');
+const path = require('path');
+const config = require('../config');
+
+// Cache je Fontdatei
+const FONT_CACHE = {};
+
+// Attribut aus einem Tag lesen (mit Wortgrenze, um z.B. 'd' vs 'id' zu unterscheiden)
+function getAttr(tag, name) {
+  const re = new RegExp(`\\b${name}="([^"]*)"`);
+  const m = tag.match(re);
+  return m ? m[1] : null;
+}
+
+// XML-Entities im unicode-Attribut dekodieren (z.B. &lt; → <, &amp; → &, &#x22; → ")
+function decodeXmlEntities(str) {
+  return str
+    .replace(/&#x([0-9a-fA-F]+);/g, (_, hex) => String.fromCodePoint(parseInt(hex, 16)))
+    .replace(/&#([0-9]+);/g, (_, dec) => String.fromCodePoint(parseInt(dec, 10)))
+    .replace(/&quot;/g, '"')
+    .replace(/&apos;/g, "'")
+    .replace(/&lt;/g, '<')
+    .replace(/&gt;/g, '>')
+    .replace(/&amp;/g, '&');
+}
+
+// SVG-Font parsen und Metriken plus Glyphen extrahieren
+function parseSvgFont(fontFileName) {
+  if (FONT_CACHE[fontFileName]) return FONT_CACHE[fontFileName];
+
+  const fontPath = path.join(config.paths.fonts, fontFileName);
+  const svg = fs.readFileSync(fontPath, 'utf8');
+
+  const fontFaceMatch = svg.match(/<font-face[\s\S]*?>/);
+  if (!fontFaceMatch) {
+    throw new Error(`Kein <font-face> in ${fontFileName} gefunden`);
+  }
+
+  const fontFaceTag = fontFaceMatch[0];
+  const unitsPerEm = parseFloat(getAttr(fontFaceTag, 'units-per-em') || '1000');
+  const ascent = parseFloat(getAttr(fontFaceTag, 'ascent') || '0');
+  const descent = parseFloat(getAttr(fontFaceTag, 'descent') || '0');
+
+  const glyphRegex = /<glyph[\s\S]*?\/>/g;
+  const glyphs = {};
+  let m;
+
+  while ((m = glyphRegex.exec(svg)) !== null) {
+    const tag = m[0];
+    const unicode = decodeXmlEntities(getAttr(tag, 'unicode') || '');
+    const d = getAttr(tag, 'd');
+    const adv = parseFloat(getAttr(tag, 'horiz-adv-x') || '0');
+
+    if (!unicode || !d) continue;
+
+    glyphs[unicode] = {
+      d,
+      adv,
+    };
+  }
+
+  const fontData = {
+    unitsPerEm,
+    ascent,
+    descent,
+    glyphs,
+  };
+
+  FONT_CACHE[fontFileName] = fontData;
+  return fontData;
+}
+
+// Zeichen, das nach der Scriptalisierung als Tabulator-Marker eingebettet wird (Unicode PUA)
+const TAB_MARKER = '';
+
+
+
+/**
+ * Breite einer Textzeile in Pixeln messen.
+ * Unterstützt TAB_MARKER: springt zur nächsten Tabstop-Position (6 × fontSizePx).
+ */
+function measureTextWidthPx({ text, fontFileName, fontSizePx }) {
+  const { unitsPerEm, glyphs } = parseSvgFont(fontFileName);
+  const scale = fontSizePx / unitsPerEm;
+  const tabStopPx = fontSizePx * 6;
+
+  let x = 0;
+
+  for (const ch of String(text || '')) {
+    if (ch === TAB_MARKER) {
+      x = Math.ceil((x + 1) / tabStopPx) * tabStopPx;
+      continue;
+    }
+
+    const glyph = glyphs[ch];
+
+    if (!glyph) {
+      // Fallback für Leerzeichen / unbekannte Zeichen
+      const spacePx = fontSizePx * 0.4;
+      x += spacePx;
+      continue;
+    }
+
+    const advPx = (glyph.adv || unitsPerEm * 0.5) * scale;
+    x += advPx;
+  }
+
+  return x;
+}
+
+/**
+ * Text nach verfügbarer Breite umbrechen.
+ * Garantiert: keine Zeile wird breiter als maxWidthPx.
+ * Unterstützt TAB_MARKER als Tabulator-Sprung innerhalb einer Zeile.
+ */
+function wrapTextToLinesByWidth({
+  text,
+  maxWidthPx,
+  fontFileName,
+  fontSizePx,
+}) {
+  const paragraphs = String(text || '').split(/\r?\n/);
+  const allLines = [];
+
+  const measure = (t) =>
+    measureTextWidthPx({ text: t, fontFileName, fontSizePx });
+
+  for (const para of paragraphs) {
+    // Tokens: Wörter und TAB_MARKER getrennt ermitteln.
+    // TAB_MARKER durch einen Platzhalter ersetzen, mit \s+ splitten, dann zurücktauschen.
+    const TAB_PLACEHOLDER = '';
+    const normalizedPara = para.split(TAB_MARKER).join(` ${TAB_PLACEHOLDER} `);
+    const rawWords = normalizedPara.split(/\s+/).filter(Boolean);
+    const tokens = rawWords.map(w => (w === TAB_PLACEHOLDER ? TAB_MARKER : w));
+
+    if (tokens.length === 0) {
+      allLines.push('');
+      continue;
+    }
+
+    let currentLine = '';
+    let afterTab = false;
+
+    for (const token of tokens) {
+      if (token === TAB_MARKER) {
+        currentLine += TAB_MARKER;
+        afterTab = true;
+        continue;
+      }
+
+      // Wort alleine zu breit → Zeichenweise brechen
+      if (measure(token) > maxWidthPx) {
+        if (currentLine) {
+          allLines.push(currentLine);
+          currentLine = '';
+          afterTab = false;
+        }
+
+        let buf = '';
+        for (const ch of token) {
+          const candidate = buf + ch;
+          if (measure(candidate) > maxWidthPx && buf) {
+            allLines.push(buf);
+            buf = ch;
+          } else {
+            buf = candidate;
+          }
+        }
+        if (buf) { currentLine = buf; afterTab = false; }
+        continue;
+      }
+
+      if (!currentLine) {
+        currentLine = token;
+        afterTab = false;
+        continue;
+      }
+
+      // Nach einem Tab kein Leerzeichen als Trenner einfügen
+      const sep = afterTab ? '' : ' ';
+      const candidate = `${currentLine}${sep}${token}`;
+      if (measure(candidate) <= maxWidthPx) {
+        currentLine = candidate;
+        afterTab = false;
+      } else {
+        allLines.push(currentLine);
+        currentLine = token;
+        afterTab = false;
+      }
+    }
+
+    if (currentLine) {
+      allLines.push(currentLine);
+    }
+  }
+
+  return allLines;
+}
+
+/**
+ * Textzeilen in Pfade mit Transform-Matrix umwandeln.
+ */
+function layoutTextToPaths({
+  lines,
+  fontFileName,
+  fontSizePx,
+  startX,
+  startY,
+  lineHeightPx,
+  realisticHandwriting = false,
+}) {
+  const { unitsPerEm, glyphs } = parseSvgFont(fontFileName);
+
+  const scale = fontSizePx / unitsPerEm;
+
+  const resultPaths = [];
+  let baselineY = startY;
+
+  for (const line of lines) {
+    let x = startX;
+    let drift = 0;
+    const lineSlope = realisticHandwriting ? (Math.random() - 0.5) * 0.01 : 0;
+
+    const tabStopPx = fontSizePx * 6;
+
+    for (let i = 0; i < line.length; i++) {
+      const ch = line[i];
+
+      // Tabulator-Marker → zur nächsten Tabstop-Position springen
+      if (ch === TAB_MARKER) {
+        const relX = x - startX;
+        const nextTab = Math.ceil((relX + 1) / tabStopPx) * tabStopPx;
+        x = startX + nextTab;
+        continue;
+      }
+
+      const glyph = glyphs[ch];
+
+      if (!glyph) {
+        // Leerzeichen mit leicht variierender Breite
+        const spacePx = fontSizePx * 0.4 * (realisticHandwriting ? (1 + (Math.random() - 0.5) * 0.08) : 1);
+        x += spacePx;
+        if (realisticHandwriting) {
+          drift += (Math.random() - 0.5) * 0.3;
+          drift = Math.max(-3, Math.min(3, drift));
+        }
+        continue;
+      }
+
+      const d = glyph.d;
+      const advPx = (glyph.adv || unitsPerEm * 0.5) * scale;
+
+      const yJitter = realisticHandwriting ? (Math.random() - 0.5) * 2.5 : 0;
+      if (realisticHandwriting) {
+        drift += (Math.random() - 0.5) * 0.4;
+        drift = Math.max(-3, Math.min(3, drift));
+      }
+
+      const charY = baselineY + yJitter + drift + lineSlope * (x - startX);
+
+      const angleDeg = realisticHandwriting ? 5 + (Math.random() - 0.5) * 2 : 0;
+      const pivotX = x + advPx / 2;
+      const pivotY = charY - fontSizePx * 0.3;
+
+      const transform = `rotate(${angleDeg.toFixed(3)},${pivotX.toFixed(1)},${pivotY.toFixed(1)}) matrix(${scale},0,0,${-scale},${x},${charY})`;
+
+      resultPaths.push({ d, transform });
+
+      x += advPx;
+    }
+
+    baselineY += lineHeightPx;
+  }
+
+  return resultPaths;
+}
+
+module.exports = {
+  TAB_MARKER,
+  measureTextWidthPx,
+  wrapTextToLinesByWidth,
+  layoutTextToPaths
+};
--- a/Docker/skrift-backend/src/lib/svg-generator.js
+++ b/Docker/skrift-backend/src/lib/svg-generator.js
@@ -0,0 +1,341 @@
+const {
+  FONT_SIZE_PX,
+  getLayoutForFormat,
+  getPageDimensions,
+  getLineLimit,
+  escapeXml
+} = require('./page-layout');
+
+const {
+  layoutTextToPaths,
+  wrapTextToLinesByWidth,
+  measureTextWidthPx
+} = require('./svg-font-engine');
+
+// Höhe einer Signatur in Seiten-Pixeln (Signatur-Canvas war 600×160; wir reservieren 160px * scale)
+const SIG_CANVAS_W = 600;
+const SIG_CANVAS_H = 160;
+
+/**
+ * Extrahiert Path- und Polyline-Elemente aus einem SVG-String und gibt sie als
+ * umgeformte <g>-Gruppe zurück, die an Position (x, y) mit Skalierung scale eingebettet ist.
+ */
+function buildSignatureElement(svgString, x, y, scale) {
+  if (!svgString || typeof svgString !== 'string') return '';
+
+  // Nur <path>-Elemente extrahieren (unsere Signatur-SVGs enthalten ausschließlich Paths)
+  const pathRegex = /<path\b([^/]*)\/>/gi;
+  const elements = [];
+  let m;
+  while ((m = pathRegex.exec(svgString)) !== null) {
+    // Stroke-Farbe auf Druckfarbe setzen, stroke-width relativ zur Skalierung anpassen
+    const attrs = m[1]
+      .replace(/stroke="[^"]*"/i, 'stroke="#000000"')
+      .replace(/stroke-width="[^"]*"/i, `stroke-width="${(2.5 / scale).toFixed(2)}"`);
+    elements.push(`<path${attrs}/>`);
+  }
+  if (!elements.length) return '';
+
+  return `<g transform="translate(${x.toFixed(1)}, ${y.toFixed(1)}) scale(${scale.toFixed(4)})">
+  ${elements.join('\n  ')}
+</g>`;
+}
+
+// Mapping der Handschriften auf SVG-Font-Dateien
+const SVG_FONT_CONFIG = {
+  tilda: { file: 'tilda.svg' },
+  alva: { file: 'alva.svg' },
+  ellie: { file: 'ellie.svg' },
+};
+
+function normalizeFontKey(font) {
+  if (!font) return 'tilda';
+  const f = String(font).toLowerCase();
+  if (['tilda', 'alva', 'ellie'].includes(f)) return f;
+  return 'tilda';
+}
+
+/**
+ * Generiert ein Schriftstück (Brief/Postkarte) als SVG
+ * @param {string} text - Der scriptalisierte Text
+ * @param {string} format - Format: a4, a6p, a6l
+ * @param {object} options - { font: 'tilda', alignment: 'left' }
+ */
+function generateLetterSVG(text, format, options = {}) {
+  const fontKey = normalizeFontKey(options.font);
+  const fontConfig = SVG_FONT_CONFIG[fontKey];
+  const signatures = options.signatures || {};
+
+  const { widthPx, heightPx, widthMm, heightMm } = getPageDimensions(format);
+  const { marginTopPx, marginLeftPx, marginRightPx, lineHeightPx } = getLayoutForFormat(format);
+  const maxWidthPx = widthPx - marginLeftPx - (marginRightPx ?? marginLeftPx);
+
+  // ── Signatur-Marker aus Text extrahieren ──────────────────────────────────
+  const sigMarkerRe = /\[\[(signatur\d+)\]\]/gi;
+  const hasSigMarkers = sigMarkerRe.test(String(text || ''));
+
+  if (!hasSigMarkers) {
+    // ── Standard-Pfad (ohne Signaturen) ──────────────────────────────────────
+    const lines = wrapTextToLinesByWidth({
+      text: String(text || ''),
+      maxWidthPx,
+      fontFileName: fontConfig.file,
+      fontSizePx: FONT_SIZE_PX,
+    });
+
+    const firstBaselineY = marginTopPx + FONT_SIZE_PX;
+    const paths = layoutTextToPaths({
+      lines,
+      fontFileName: fontConfig.file,
+      fontSizePx: FONT_SIZE_PX,
+      startX: marginLeftPx,
+      startY: firstBaselineY,
+      lineHeightPx,
+      realisticHandwriting: options.realisticHandwriting ?? false,
+    });
+
+    const pathElements = paths
+      .map(p => `<path d="${escapeXml(p.d)}"
+        transform="${p.transform}"
+        stroke="#000000" stroke-width="0.6" fill="none"
+        stroke-linecap="round" stroke-linejoin="round"
+        vector-effect="non-scaling-stroke"/>`)
+      .join('\n  ');
+
+    const lineLimit = getLineLimit(format);
+    return {
+      svg: `<svg xmlns="http://www.w3.org/2000/svg"
+     width="${widthMm}mm" height="${heightMm}mm"
+     viewBox="0 0 ${widthPx} ${heightPx}">
+  <rect x="0" y="0" width="${widthPx}" height="${heightPx}" fill="#FFFFFF"/>
+  ${pathElements}
+</svg>`.trim(),
+      lineCount: lines.length,
+      lineLimit,
+      overflow: lines.length > lineLimit,
+    };
+  }
+
+  // ── Pfad mit Signaturen: Text in Segmente aufteilen ───────────────────────
+  // Jede Signatur-Zeile ist 2 Zeilen hoch; bis zu 3 Signaturen nebeneinander.
+  const sigHeightPx  = 2 * lineHeightPx;
+  const sigSlotW     = maxWidthPx / 3;                     // Breite pro Signatur-Slot
+  const sigScaleH    = sigHeightPx / SIG_CANVAS_H;
+  const sigScaleW    = sigSlotW    / SIG_CANVAS_W;
+  const sigScale     = Math.min(sigScaleH, sigScaleW);     // gleichmäßig skalieren
+  const sigPaddingPx = lineHeightPx * 0.3;                 // kleiner Abstand ober/unterhalb
+
+  const rawText = String(text || '');
+  const segments = [];
+  sigMarkerRe.lastIndex = 0;
+  let lastEnd = 0;
+  let matchSig;
+  while ((matchSig = sigMarkerRe.exec(rawText)) !== null) {
+    if (matchSig.index > lastEnd) {
+      segments.push({ type: 'text', content: rawText.slice(lastEnd, matchSig.index) });
+    }
+    segments.push({ type: 'sig', key: matchSig[1].toLowerCase() });
+    lastEnd = matchSig.index + matchSig[0].length;
+  }
+  if (lastEnd < rawText.length) {
+    segments.push({ type: 'text', content: rawText.slice(lastEnd) });
+  }
+
+  const allSvgElements = [];
+  let currentY = marginTopPx + FONT_SIZE_PX;
+  let totalLineCount = 0;
+  const lineLimit = getLineLimit(format);
+
+  let si = 0;
+  while (si < segments.length) {
+    const seg = segments[si];
+
+    if (seg.type === 'text') {
+      const trimmed = seg.content.replace(/^\n+/, '').replace(/\n+$/, '');
+      if (!trimmed) { si++; continue; }
+      const lines = wrapTextToLinesByWidth({
+        text: seg.content,
+        maxWidthPx,
+        fontFileName: fontConfig.file,
+        fontSizePx: FONT_SIZE_PX,
+      });
+      const paths = layoutTextToPaths({
+        lines,
+        fontFileName: fontConfig.file,
+        fontSizePx: FONT_SIZE_PX,
+        startX: marginLeftPx,
+        startY: currentY,
+        lineHeightPx,
+        realisticHandwriting: options.realisticHandwriting ?? false,
+      });
+      paths.forEach(p => allSvgElements.push(
+        `<path d="${escapeXml(p.d)}" transform="${p.transform}"
+          stroke="#000000" stroke-width="0.6" fill="none"
+          stroke-linecap="round" stroke-linejoin="round"
+          vector-effect="non-scaling-stroke"/>`
+      ));
+      currentY += lines.length * lineHeightPx;
+      totalLineCount += lines.length;
+      si++;
+    } else {
+      // Aufeinanderfolgende Signaturen als Zeile nebeneinander rendern
+      const sigRow = [];
+      while (si < segments.length && segments[si].type === 'sig') {
+        sigRow.push(segments[si]);
+        si++;
+      }
+      currentY += sigPaddingPx;
+      sigRow.forEach((sigSeg, slotIdx) => {
+        const svgString = signatures[sigSeg.key] || null;
+        if (svgString) {
+          const sigX = marginLeftPx + slotIdx * sigSlotW;
+          const sigEl = buildSignatureElement(svgString, sigX, currentY, sigScale);
+          if (sigEl) allSvgElements.push(sigEl);
+        }
+      });
+      currentY += sigHeightPx + sigPaddingPx;
+      totalLineCount += 2; // ganze Zeile zählt als 2 Zeilen, unabhängig von Anzahl
+    }
+  }
+
+  return {
+    svg: `<svg xmlns="http://www.w3.org/2000/svg"
+     width="${widthMm}mm" height="${heightMm}mm"
+     viewBox="0 0 ${widthPx} ${heightPx}">
+  <rect x="0" y="0" width="${widthPx}" height="${heightPx}" fill="#FFFFFF"/>
+  ${allSvgElements.join('\n  ')}
+</svg>`.trim(),
+    lineCount: totalLineCount,
+    lineLimit,
+    overflow: totalLineCount > lineLimit,
+  };
+}
+
+/**
+ * Generiert einen Umschlag als SVG
+ * @param {string} text - Der scriptalisierte Text
+ * @param {string} format - Format: c6, din_lang
+ * @param {string} type - Typ: 'recipient' (links), 'free' (links, freie Adresse), 'custom' (mittig)
+ * @param {object} options - { font: 'tilda' }
+ */
+function generateEnvelopeSVG(text, format, type, options = {}) {
+  const fontKey = normalizeFontKey(options.font);
+  const fontConfig = SVG_FONT_CONFIG[fontKey];
+
+  const { widthPx, heightPx, widthMm, heightMm } = getPageDimensions(format);
+  const { marginTopPx, marginLeftPx, lineHeightPx } = getLayoutForFormat(format);
+
+  let lines;
+  let startX;
+  let startY;
+
+  if (type === 'custom') {
+    // Mittig zentriert, 70% der Umschlagsbreite
+    const maxWidthPx = widthPx * 0.7;
+
+    lines = wrapTextToLinesByWidth({
+      text: String(text || ''),
+      maxWidthPx,
+      fontFileName: fontConfig.file,
+      fontSizePx: FONT_SIZE_PX,
+    });
+
+    // Zentrierung berechnen
+    const totalTextHeight = lines.length * lineHeightPx;
+    startY = (heightPx - totalTextHeight) / 2 + FONT_SIZE_PX;
+
+    // Jede Zeile einzeln zentrieren
+    // startX wird später pro Zeile berechnet
+    startX = 0; // Dummy-Wert, wird für jede Zeile überschrieben
+
+  } else {
+    // type === 'recipient' / 'free': Links, max. 60% der Umschlagsbreite
+    const maxWidthPx = Math.min(widthPx - marginLeftPx - 20, widthPx * 0.6);
+
+    lines = wrapTextToLinesByWidth({
+      text: String(text || ''),
+      maxWidthPx,
+      fontFileName: fontConfig.file,
+      fontSizePx: FONT_SIZE_PX,
+    });
+
+    startX = marginLeftPx;
+    startY = marginTopPx + FONT_SIZE_PX;
+  }
+
+  let paths = [];
+
+  if (type === 'custom') {
+    // Bei custom type: Jede Zeile einzeln zentrieren
+    let currentY = startY;
+    for (const line of lines) {
+      const lineWidth = measureTextWidthPx({
+        text: line,
+        fontFileName: fontConfig.file,
+        fontSizePx: FONT_SIZE_PX
+      });
+      const centeredX = (widthPx - lineWidth) / 2;
+
+      const linePaths = layoutTextToPaths({
+        lines: [line],
+        fontFileName: fontConfig.file,
+        fontSizePx: FONT_SIZE_PX,
+        startX: centeredX,
+        startY: currentY,
+        lineHeightPx,
+        realisticHandwriting: options.realisticHandwriting ?? false,
+      });
+
+      paths.push(...linePaths);
+      currentY += lineHeightPx;
+    }
+  } else {
+    // Bei recipient type: Normal links ausrichten
+    paths = layoutTextToPaths({
+      lines,
+      fontFileName: fontConfig.file,
+      fontSizePx: FONT_SIZE_PX,
+      startX,
+      startY,
+      lineHeightPx,
+      realisticHandwriting: options.realisticHandwriting ?? false,
+    });
+  }
+
+  const pathElements = paths
+    .map(
+      (p) => `<path d="${escapeXml(p.d)}"
+        transform="${p.transform}"
+        stroke="#000000"
+        stroke-width="0.6"
+        fill="none"
+        stroke-linecap="round"
+        stroke-linejoin="round"
+        vector-effect="non-scaling-stroke"
+      />`
+    )
+    .join('\n  ');
+
+  const svg = `<svg xmlns="http://www.w3.org/2000/svg"
+     width="${widthMm}mm"
+     height="${heightMm}mm"
+     viewBox="0 0 ${widthPx} ${heightPx}">
+  <rect x="0" y="0" width="${widthPx}" height="${heightPx}" fill="#FFFFFF" />
+  ${pathElements}
+</svg>`;
+
+  // Overflow-Erkennung: zu viele Zeilen für die verfügbare Fläche
+  const overflowStartY = (type === 'custom')
+    ? (heightPx - lines.length * lineHeightPx) / 2 + FONT_SIZE_PX
+    : marginTopPx + FONT_SIZE_PX;
+  const available = heightPx - overflowStartY - FONT_SIZE_PX * 0.5;
+  const lineLimit = Math.max(1, Math.floor(available / lineHeightPx) + 1);
+  const lineCount = lines.length;
+
+  return { svg: svg.trim(), overflow: lineCount > lineLimit, lineCount, lineLimit };
+}
+
+module.exports = {
+  generateLetterSVG,
+  generateEnvelopeSVG
+};
--- a/Docker/skrift-backend/src/server.js
+++ b/Docker/skrift-backend/src/server.js
@@ -0,0 +1,53 @@
+const express = require('express');
+const cors = require('cors');
+const config = require('./config');
+
+const previewRoutes = require('./api/routes/preview-routes');
+const orderRoutes = require('./api/routes/order-routes');
+const healthRoutes = require('./api/routes/health-routes');
+
+const errorHandler = require('./api/middleware/error-handler');
+const requestLogger = require('./api/middleware/request-logger');
+
+const app = express();
+
+// Middleware
+app.use(cors(config.cors));
+app.use(express.json({ limit: '10mb' }));
+app.use(express.urlencoded({ extended: true, limit: '10mb' }));
+app.use(requestLogger);
+
+// Routes
+app.use('/health', healthRoutes);
+app.use('/api/preview', previewRoutes);
+app.use('/api/order', orderRoutes);
+
+// Error handling
+app.use(errorHandler);
+
+// Start server
+app.listen(config.port, () => {
+  console.log('╔════════════════════════════════════════════════════════════╗');
+  console.log('║                  Skrift Backend Server                    ║');
+  console.log('╚════════════════════════════════════════════════════════════╝');
+  console.log(`Environment:       ${config.env}`);
+  console.log(`Port:              ${config.port}`);
+  console.log(`Batch Size:        Unlimited (auto-split to ${config.preview.scriptalizerBatchSize} for API)`);
+  console.log(`Cache:             Disabled`);
+  console.log(`Rate Limit:        Disabled`);
+  console.log(`Scriptalizer:      ${config.scriptalizer.licenseKey ? 'Configured ✓' : 'Missing ✗'}`);
+  console.log('════════════════════════════════════════════════════════════');
+  console.log(`Server running at http://localhost:${config.port}`);
+  console.log('════════════════════════════════════════════════════════════\n');
+});
+
+// Graceful shutdown
+process.on('SIGTERM', () => {
+  console.log('SIGTERM received, shutting down gracefully...');
+  process.exit(0);
+});
+
+process.on('SIGINT', () => {
+  console.log('\nSIGINT received, shutting down gracefully...');
+  process.exit(0);
+});
--- a/Docker/skrift-backend/src/services/placeholder-service.js
+++ b/Docker/skrift-backend/src/services/placeholder-service.js
@@ -0,0 +1,283 @@
+/**
+ * Ersetzt Platzhalter im Text
+ * @param {string} text - Text mit Platzhaltern wie [[Vorname]]
+ * @param {object} placeholders - Objekt mit Platzhalter-Werten {Vorname: 'Max', ...}
+ * @returns {string} - Text mit ersetzten Platzhaltern
+ */
+function replacePlaceholders(text, placeholders) {
+  if (!placeholders || typeof placeholders !== 'object') {
+    return text;
+  }
+
+  let result = text;
+
+  for (const [key, value] of Object.entries(placeholders)) {
+    const placeholder = `[[${key}]]`;
+    // Case-insensitive replacement: 'i' flag
+    const regex = new RegExp(placeholder.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'), 'gi');
+    result = result.replace(regex, value || '');
+  }
+
+  return result;
+}
+
+/**
+ * Escaped einen Wert für CSV
+ */
+function escapeCSV(value) {
+  const str = String(value || '');
+  if (str.includes(',') || str.includes('\n') || str.includes('"')) {
+    return `"${str.replace(/"/g, '""')}"`;
+  }
+  return str;
+}
+
+/**
+ * Generiert CSV aus Platzhalter-Daten (für Briefe)
+ * @param {Array} letters - Array von Letter-Objekten mit placeholders
+ * @returns {string} - CSV-String
+ */
+function generatePlaceholderCSV(letters) {
+  if (!Array.isArray(letters) || letters.length === 0) {
+    return '';
+  }
+
+  // Nur Briefe filtern (keine Umschläge)
+  const letterItems = letters.filter(l => l.type !== 'envelope');
+  if (letterItems.length === 0) {
+    return '';
+  }
+
+  // Sammle alle unique Keys
+  const allKeys = new Set();
+  letterItems.forEach(letter => {
+    if (letter.placeholders) {
+      Object.keys(letter.placeholders).forEach(key => allKeys.add(key));
+    }
+  });
+
+  if (allKeys.size === 0) {
+    return '';
+  }
+
+  const keys = ['BriefNr', ...Array.from(allKeys).sort()];
+
+  // Header
+  const header = keys.join(',');
+
+  // Rows
+  const rows = letterItems.map((letter, index) => {
+    const briefNr = String(letter.index !== undefined ? letter.index : index).padStart(3, '0');
+    const values = [briefNr];
+
+    for (let i = 1; i < keys.length; i++) {
+      const key = keys[i];
+      const value = letter.placeholders?.[key] || '';
+      values.push(escapeCSV(value));
+    }
+
+    return values.join(',');
+  });
+
+  return [header, ...rows].join('\n');
+}
+
+/**
+ * Generiert CSV für Empfängerdaten (Umschläge im recipientData-Modus)
+ * @param {Array} letters - Array von Letter-Objekten
+ * @returns {string} - CSV-String
+ */
+function generateRecipientCSV(letters) {
+  if (!Array.isArray(letters) || letters.length === 0) {
+    return '';
+  }
+
+  // Nur Umschläge im recipient-Modus filtern
+  const envelopes = letters.filter(l => l.type === 'envelope' && l.envelopeType === 'recipient');
+  if (envelopes.length === 0) {
+    return '';
+  }
+
+  // Prüfe ob Empfängerdaten vorhanden sind (vorname, name, strasse, etc.)
+  const recipientKeys = ['vorname', 'name', 'strasse', 'hausnummer', 'plz', 'ort', 'land'];
+  const hasRecipientData = envelopes.some(env =>
+    env.placeholders && recipientKeys.some(key => env.placeholders[key])
+  );
+
+  if (!hasRecipientData) {
+    return '';
+  }
+
+  const keys = ['UmschlagNr', ...recipientKeys];
+  const header = keys.join(',');
+
+  const rows = envelopes.map((envelope, index) => {
+    const umschlagNr = String(envelope.index !== undefined ? envelope.index : index).padStart(3, '0');
+    const values = [umschlagNr];
+
+    for (let i = 1; i < keys.length; i++) {
+      const key = keys[i];
+      const value = envelope.placeholders?.[key] || '';
+      values.push(escapeCSV(value));
+    }
+
+    return values.join(',');
+  });
+
+  return [header, ...rows].join('\n');
+}
+
+/**
+ * Generiert CSV für freie Adressen (Umschläge im free-Modus)
+ * @param {Array} letters - Array von Letter-Objekten
+ * @returns {string} - CSV-String
+ */
+function generateFreeAddressCSV(letters) {
+  if (!Array.isArray(letters) || letters.length === 0) {
+    return '';
+  }
+
+  // Nur Umschläge im free-Modus filtern
+  const envelopes = letters.filter(l => l.type === 'envelope' && l.envelopeType === 'free');
+  if (envelopes.length === 0) {
+    return '';
+  }
+
+  // Freie Adressen haben bis zu 5 Zeilen
+  const keys = ['UmschlagNr', 'Zeile1', 'Zeile2', 'Zeile3', 'Zeile4', 'Zeile5'];
+  const header = keys.join(',');
+
+  const rows = envelopes.map((envelope, index) => {
+    const umschlagNr = String(envelope.index !== undefined ? envelope.index : index).padStart(3, '0');
+
+    // Text in Zeilen aufteilen
+    const textLines = (envelope.text || '').split('\n');
+    const values = [umschlagNr];
+
+    for (let i = 0; i < 5; i++) {
+      values.push(escapeCSV(textLines[i] || ''));
+    }
+
+    return values.join(',');
+  });
+
+  return [header, ...rows].join('\n');
+}
+
+/**
+ * Generiert CSV für Umschlag-Platzhalter (Umschläge im customText-Modus)
+ * @param {Array} letters - Array von Letter-Objekten
+ * @returns {string} - CSV-String
+ */
+function generateEnvelopePlaceholderCSV(letters) {
+  if (!Array.isArray(letters) || letters.length === 0) {
+    console.log('[CSV] generateEnvelopePlaceholderCSV: No letters');
+    return '';
+  }
+
+  // Nur Umschläge im custom-Modus filtern
+  const envelopes = letters.filter(l => l.type === 'envelope' && l.envelopeType === 'custom');
+  console.log('[CSV] Found custom envelopes:', envelopes.length);
+  console.log('[CSV] Envelope details:', envelopes.map(e => ({ type: e.type, envelopeType: e.envelopeType, placeholders: e.placeholders })));
+
+  if (envelopes.length === 0) {
+    return '';
+  }
+
+  // Sammle alle unique Keys (außer Standard-Empfängerfelder)
+  const recipientKeys = ['vorname', 'name', 'strasse', 'hausnummer', 'plz', 'ort', 'land'];
+  const allKeys = new Set();
+  envelopes.forEach(envelope => {
+    if (envelope.placeholders) {
+      console.log('[CSV] Envelope placeholders keys:', Object.keys(envelope.placeholders));
+      Object.keys(envelope.placeholders).forEach(key => {
+        // Nur nicht-Empfängerfelder sammeln
+        if (!recipientKeys.includes(key.toLowerCase())) {
+          allKeys.add(key);
+          console.log('[CSV] Added key:', key);
+        } else {
+          console.log('[CSV] Skipped recipient key:', key);
+        }
+      });
+    }
+  });
+
+  console.log('[CSV] All collected keys:', Array.from(allKeys));
+
+  if (allKeys.size === 0) {
+    console.log('[CSV] No custom placeholder keys found for envelopes');
+    return '';
+  }
+
+  const keys = ['UmschlagNr', ...Array.from(allKeys).sort()];
+  const header = keys.join(',');
+
+  const rows = envelopes.map((envelope, index) => {
+    const umschlagNr = String(envelope.index !== undefined ? envelope.index : index).padStart(3, '0');
+    const values = [umschlagNr];
+
+    for (let i = 1; i < keys.length; i++) {
+      const key = keys[i];
+      const value = envelope.placeholders?.[key] || '';
+      values.push(escapeCSV(value));
+    }
+
+    return values.join(',');
+  });
+
+  return [header, ...rows].join('\n');
+}
+
+/**
+ * Generiert alle CSV-Dateien für eine Bestellung
+ * @param {Array} letters - Array von Letter-Objekten (Briefe und Umschläge)
+ * @returns {Object} - Objekt mit CSV-Inhalten { placeholders, recipients, envelopePlaceholders, freeAddresses }
+ */
+function generateAllCSVs(letters) {
+  const result = {
+    placeholders: null,           // Brief-Platzhalter
+    recipients: null,             // Empfängerdaten für Umschläge (recipientData-Modus)
+    envelopePlaceholders: null,   // Umschlag-Platzhalter (customText-Modus)
+    freeAddresses: null           // Freie Adressen für Umschläge (free-Modus)
+  };
+
+  if (!Array.isArray(letters) || letters.length === 0) {
+    return result;
+  }
+
+  // Brief-Platzhalter CSV
+  const placeholderCSV = generatePlaceholderCSV(letters);
+  if (placeholderCSV) {
+    result.placeholders = placeholderCSV;
+  }
+
+  // Empfänger CSV (für recipientData-Modus)
+  const recipientCSV = generateRecipientCSV(letters);
+  if (recipientCSV) {
+    result.recipients = recipientCSV;
+  }
+
+  // Umschlag-Platzhalter CSV (für customText-Modus)
+  const envelopePlaceholderCSV = generateEnvelopePlaceholderCSV(letters);
+  if (envelopePlaceholderCSV) {
+    result.envelopePlaceholders = envelopePlaceholderCSV;
+  }
+
+  // Freie Adressen CSV (für free-Modus)
+  const freeAddressCSV = generateFreeAddressCSV(letters);
+  if (freeAddressCSV) {
+    result.freeAddresses = freeAddressCSV;
+  }
+
+  return result;
+}
+
+module.exports = {
+  replacePlaceholders,
+  generatePlaceholderCSV,
+  generateRecipientCSV,
+  generateEnvelopePlaceholderCSV,
+  generateFreeAddressCSV,
+  generateAllCSVs,
+  escapeCSV
+};
--- a/Docker/skrift-backend/src/services/scriptalizer-service.js
+++ b/Docker/skrift-backend/src/services/scriptalizer-service.js
@@ -0,0 +1,230 @@
+const https = require("https");
+const { parseStringPromise } = require("xml2js");
+const config = require("../config");
+
+// API Request Counter (resets daily)
+const stats = {
+  requestsToday: 0,
+  textsToday: 0,
+  lastResetDate: new Date().toDateString(),
+};
+
+/**
+ * Prüft ob der Zähler zurückgesetzt werden muss (neuer Tag)
+ */
+function checkAndResetDailyStats() {
+  const today = new Date().toDateString();
+  if (stats.lastResetDate !== today) {
+    console.log(`[Scriptalizer] 📅 New day detected, resetting counters`);
+    console.log(`[Scriptalizer] 📊 Yesterday's stats: ${stats.requestsToday} API calls, ${stats.textsToday} texts processed`);
+    stats.requestsToday = 0;
+    stats.textsToday = 0;
+    stats.lastResetDate = today;
+  }
+}
+
+/**
+ * Gibt die aktuellen Stats zurück
+ */
+function getStats() {
+  checkAndResetDailyStats();
+  return { ...stats };
+}
+
+/**
+ * Ruft die Scriptalizer API auf
+ * @param {string} inputText - Text zum Scriptalisieren
+ * @param {string} fontName - Font-Name (z.B. 'PremiumUltra79')
+ * @param {number} errFrequency - Fehlerfrequenz
+ * @returns {Promise<{status: string, outputText: string}>}
+ */
+async function callScriptalizer(inputText, fontName, errFrequency = 10) {
+  // Prüfe ob neuer Tag
+  checkAndResetDailyStats();
+
+  return new Promise((resolve, reject) => {
+    if (!config.scriptalizer.licenseKey) {
+      reject(new Error("Scriptalizer License Key fehlt in Konfiguration"));
+      return;
+    }
+
+    // Use x-www-form-urlencoded format
+    const params = new URLSearchParams();
+    params.append("LicenseKey", config.scriptalizer.licenseKey);
+    params.append("FontName", fontName);
+    params.append("ErrFrequency", String(errFrequency));
+    params.append("InputText", inputText);
+
+    const body = params.toString();
+
+    // Check input size (48KB limit)
+    if (Buffer.byteLength(body) > config.scriptalizer.maxInputSize) {
+      reject(
+        new Error(
+          `Input size exceeds 48KB limit (${Buffer.byteLength(body)} bytes)`
+        )
+      );
+      return;
+    }
+
+    const options = {
+      hostname: "www.scriptalizer.co.uk",
+      port: 443,
+      path: "/QuantumScriptalize.asmx/Scriptalize",
+      method: "POST",
+      headers: {
+        "Content-Type": "application/x-www-form-urlencoded; charset=utf-8",
+        "Content-Length": Buffer.byteLength(body),
+      },
+      timeout: 30000, // 30 second timeout
+    };
+
+    const req = https.request(options, (res) => {
+      let data = "";
+
+      res.on("data", (chunk) => {
+        data += chunk;
+      });
+
+      res.on("end", async () => {
+        try {
+          const result = await parseStringPromise(data, {
+            explicitArray: false,
+          });
+          const response = result.ScriptalizerResponse;
+
+          if (!response || response.Status !== "OK") {
+            reject(new Error(response?.Status || "UNKNOWN_STATUS"));
+            return;
+          }
+
+          // Zähler erhöhen bei erfolgreichem Request
+          stats.requestsToday++;
+          console.log(`[Scriptalizer] 📊 API Request #${stats.requestsToday} today completed`);
+
+          resolve({ status: "OK", outputText: response.OutputText });
+        } catch (err) {
+          reject(
+            new Error(`Failed to parse Scriptalizer response: ${err.message}`)
+          );
+        }
+      });
+    });
+
+    req.on("error", (err) => {
+      reject(new Error(`Scriptalizer request failed: ${err.message}`));
+    });
+
+    req.on("timeout", () => {
+      req.destroy();
+      reject(new Error("Scriptalizer request timed out"));
+    });
+
+    req.write(body);
+    req.end();
+  });
+}
+
+/**
+ * Scriptalisiert mehrere Texte in 25er Batches
+ * @param {string[]} texts - Array von Texten
+ * @param {string} font - Font-Key (tilda, alva, ellie)
+ * @param {number} errFrequency - Fehlerfrequenz
+ * @returns {Promise<string[]>} - Array von scriptalisierten Texten
+ */
+async function scriptalizeBatch(texts, font = "tilda", errFrequency = 10) {
+  if (!Array.isArray(texts) || texts.length === 0) {
+    return [];
+  }
+
+  const fontName =
+    config.scriptalizer.fontMap[font.toLowerCase()] ||
+    config.scriptalizer.fontMap.tilda;
+  const separator = config.scriptalizer.separator;
+  const BATCH_SIZE = 18; // 18 Texte pro Scriptalizer API Call (Scriptalizer-API-Limit: 32000 Zeichen pro Call → ca. 1700 Zeichen pro Brief sicher)
+
+  console.log(
+    `[Scriptalizer] Processing ${texts.length} texts in batches of ${BATCH_SIZE}`
+  );
+
+  const allScriptalized = [];
+
+  // Teile in 25er Batches auf
+  for (let i = 0; i < texts.length; i += BATCH_SIZE) {
+    const batch = texts.slice(i, i + BATCH_SIZE);
+    const batchNumber = Math.floor(i / BATCH_SIZE) + 1;
+    const totalBatches = Math.ceil(texts.length / BATCH_SIZE);
+
+    console.log(
+      `[Scriptalizer] Processing batch ${batchNumber}/${totalBatches} (${
+        batch.length
+      } texts, indices ${i}-${i + batch.length - 1})`
+    );
+
+    // Kombiniere Texte mit Separator
+    const combinedText = batch.join(separator);
+
+    try {
+      const result = await callScriptalizer(
+        combinedText,
+        fontName,
+        errFrequency
+      );
+
+      // Trenne Ergebnis wieder
+      const scriptalized = result.outputText.split(separator);
+
+      if (scriptalized.length !== batch.length) {
+        console.warn(
+          `[Scriptalizer] Batch ${batchNumber}: returned ${scriptalized.length} parts, expected ${batch.length}`
+        );
+      }
+
+      allScriptalized.push(...scriptalized);
+      console.log(
+        `[Scriptalizer] Batch ${batchNumber}/${totalBatches} completed successfully`
+      );
+    } catch (err) {
+      console.error(`[Scriptalizer] Batch ${batchNumber} failed:`, err.message);
+      throw err;
+    }
+  }
+
+  // Textzähler erhöhen
+  stats.textsToday += allScriptalized.length;
+
+  console.log(
+    `[Scriptalizer] All batches completed. Total scriptalized: ${allScriptalized.length}`
+  );
+  console.log(
+    `[Scriptalizer] 📊 Daily stats: ${stats.requestsToday} API calls, ${stats.textsToday} texts processed`
+  );
+  return allScriptalized;
+}
+
+/**
+ * Scriptalisiert einen einzelnen Text
+ * @param {string} text - Text zum Scriptalisieren
+ * @param {string} font - Font-Key (tilda, alva, ellie)
+ * @param {number} errFrequency - Fehlerfrequenz
+ * @returns {Promise<string>} - Scriptalisierter Text
+ */
+async function scriptalizeSingle(text, font = "tilda", errFrequency = 10) {
+  const fontName =
+    config.scriptalizer.fontMap[font.toLowerCase()] ||
+    config.scriptalizer.fontMap.tilda;
+
+  try {
+    const result = await callScriptalizer(text, fontName, errFrequency);
+    return result.outputText;
+  } catch (err) {
+    console.error("Scriptalizer single call failed:", err.message);
+    throw err;
+  }
+}
+
+module.exports = {
+  scriptalizeBatch,
+  scriptalizeSingle,
+  getStats,
+};