NethVoice UI: Display certificate failure & Traefik restart messages for cluster-admin #7719
Description
Proposed Feature
Update the NethVoice frontend (UI) to comply with NS8 certificate management UX requirements: inform the cluster-admin user about certificate validation errors and display a Traefik restart warning, aligned with new backend signals and UX guidelines.
Purpose and Motivation
Cluster-admins must receive clear feedback during certificate operations to aid troubleshooting and align with NS8 consistency. The UI should present ACME/Let's Encrypt errors and warn if a Traefik restart is performed (e.g., after cleanup), as described in UX mockups and platform guidance.
Proposed Solution
- Implement UI logic to listen for and show certificate validation errors ("newcert_acme_error") received from backend/actions.
- Display a visible warning message when a Traefik restart event is signaled (after certificate cleanup).
- Follow NS8 UX mockups/guidelines for visual consistency and admin clarity.
Alternative Solutions
- Maintain current UI (no explicit feedback/warning). This limits admin awareness and contradicts new UX standards.
Additional Context
- Mockup: UX mockup
- Related: Parent issue #7670