Disable deployment until production server is configured

- Temporarily disable automatic deployment to prevent CI failures
- Add comprehensive production server setup documentation
- Update deployment guide with clear setup requirements
- Format manually edited code files for CI compliance
- Provide step-by-step server configuration instructions
- Enable safe CI/CD pipeline operation without deployment errors

The deployment will be re-enabled once the production server is properly set up following the new documentation.

DEPLOYMENT.md

@@ -1,14 +1,48 @@
 # Deployment Guide
 
-## Production Deployment Status ✅
+## ⚠️ **Production Server Setup Required**
 
-The automated deployment pipeline is now configured and ready!
+**IMPORTANT**: The automated deployment is currently disabled until your production server is properly configured.
+
+### Current Status:
+- ✅ CI/CD Pipeline: Fully configured
+- ✅ Code Quality: Automated checks working
+- ✅ Docker Images: Building successfully
+- ❌ Production Server: **Needs setup** (deployment disabled)
+
+### Required Setup Steps:
+
+1. **Set up your production server** following the detailed guide:
+   📖 **[Complete Production Server Setup Guide](docs/production-server-setup.md)**
+
+2. **Enable automatic deployment** once server is ready by editing `.github/workflows/ci-cd.yml`
 
 ### Deployment Secrets Configured:
 - ✅ `PROD_HOST` - Production server address
 - ✅ `PROD_USERNAME` - SSH username (deployment)
 - ✅ `PROD_SSH_KEY` - SSH private key for authentication
 
+### Why Deployment is Disabled:
+
+The CI/CD pipeline was failing because:
+- `/opt/stiftung` directory doesn't exist on server
+- Docker is not installed on production server  
+- Git repository not cloned to server
+- Environment variables not configured
+
+### Re-enabling Deployment:
+
+After completing the server setup, edit `.github/workflows/ci-cd.yml` and change:
+
+```yaml
+if: github.ref == 'refs/heads/main' && false  # Disabled until production server is set up
+```
+
+To:
+```yaml
+if: github.ref == 'refs/heads/main'
+```
+
 ### Deployment Process:
 
 1. **Automatic Triggers:**