Enforce admin and workspace permissions, improve logging, and add DNS frontend/API support.
- Backend: added admin checks to cloud_provisioning and marketplace endpoints; added require_workspace_access helper and applied to multiple workspace endpoints to enforce membership/admin access; persist push subscription data in mobile API (commit to DB); replaced print() debugging with structured logger calls across agent_registry and added logging/exception handling in monitoring_service.
- Frontend: added a DNS API client (frontend/src/services/api/dns.js) and registered it in the API index; extended DNSZones UI to collect provider zone ID and API token, updated create payload and form reset; added optional modal footer prop to Modal component; moved rollup native binding to optionalDependencies in package.json.
- Misc: added '*.png' to .gitignore and a minor spacing change in install.sh.
These changes improve security checks, observability, and add DNS management features in the UI/API.