feat: update deployment configuration and encrypted env loader

- Update Ansible playbooks and roles for application deployment
- Add new Gitea/Traefik troubleshooting playbooks
- Update Docker Compose configurations (base, local, staging, production)
- Enhance EncryptedEnvLoader with improved error handling
- Add deployment scripts (autossh setup, migration, secret testing)
- Update CI/CD workflows and documentation
- Add Semaphore stack configuration

README.md

@@ -17,8 +17,9 @@ make up
 # Oder: Manuelle Installation
 composer install
 npm install
-cp .env.example .env
-# Bearbeiten Sie .env mit Ihren Einstellungen
+# Neue Base+Override Struktur: .env.base + .env.local
+# Siehe ENV_SETUP.md für Details
+# Für Backward Compatibility: cp .env.example .env (wird als Fallback geladen)
 ```
 
 ### Production Deployment