Remove init-admin.sh references from documentation and update permissions in scripts

Co-authored-by: Copilot <copilot@github.com>

.github/workflows/release-docker.yml

@@ -230,8 +230,7 @@ jobs:
           cp backup.sh release-bundle/backup.sh
           cp config.json release-bundle/config.json
           cp update.sh release-bundle/update.sh
-          cp init-admin.sh release-bundle/init-admin.sh
-          
+
           # Multitenant scripts & docs
           cp docker-compose-multitenant.yml release-bundle/docker-compose-multitenant.yml
           cp manage-tenant.sh release-bundle/manage-tenant.sh
@@ -239,7 +238,7 @@ jobs:
           cp MULTITENANT_DEPLOYMENT.md release-bundle/MULTITENANT_DEPLOYMENT.md
           cp MULTITENANT_PYTHON_API.md release-bundle/MULTITENANT_PYTHON_API.md
 
-          chmod +x release-bundle/start.sh release-bundle/stop.sh release-bundle/restart.sh release-bundle/backup.sh release-bundle/update.sh release-bundle/init-admin.sh release-bundle/manage-tenant.sh release-bundle/run-tenant-cmd.sh
+          chmod +x release-bundle/start.sh release-bundle/stop.sh release-bundle/restart.sh release-bundle/backup.sh release-bundle/update.sh release-bundle/manage-tenant.sh release-bundle/run-tenant-cmd.sh
           tar -czf inventarsystem-docker-bundle.tar.gz -C release-bundle .
 
       - name: Create or update GitHub Release