feat(deployment): update Semaphore stack and Traefik configuration

- Add QUICKSTART.md and SETUP_REPOSITORY.md for Semaphore stack
- Add playbooks directory for Semaphore deployment
- Update Semaphore docker-compose.yml, env.example, and README
- Add Traefik local configuration files
- Disable semaphore.yml in Traefik dynamic config
- Update docker-compose.local.yml and build-image workflow

docker-compose.local.yml

@@ -12,7 +12,7 @@ services:
     container_name: web
     ports:
       - "8888:80"
-      - "8443:443"
+      - "443:443"   # HTTPS auf Standard-Port 443 für direkten Zugriff via https://localhost
     environment:
       - APP_ENV=${APP_ENV:-development}
     volumes: