Replace peter-evans/dockerhub-description with direct Docker Hub API call

[Copilot]

Removes the third-party peter-evans/dockerhub-description action from the push-container-images workflow, replacing it with a native PowerShell call to the Docker Hub REST API. snok/container-retention-policy is not used in this repo.

Changes

• push-container-images.yml: Replace peter-evans/dockerhub-description@v5.0.0 with a run step that:
  • Authenticates via POST https://hub.docker.com/v2/users/login/ using existing DOCKERHUB_USERNAME/DOCKERHUB_TOKEN secrets
  • Masks the returned JWT with ::add-mask:: to prevent log exposure
  • Reads Container-README.md and updates the repository via PATCH https://hub.docker.com/v2/repositories/particular/servicepulse/
  • Both Invoke-RestMethod calls use -ErrorAction Stop for explicit failure reporting

Reviewer Checklist

• Components are broken down into sensible and maintainable sub-components.
• Styles are scoped to the component using it. If multiple components need to share CSS, then a .css file is created containing the shared CSS and imported into component scoped style sections.
• Naming is consistent with existing code, and adequately describes the component or function being introduced
• Only functions utilizing Vue state or lifecycle hooks are named as composables (i.e. starting with 'use');
• No module-level state is being introduced. If so, request the PR author to move the state to the corresponding Pinia store.