[Sprint 19] feat(app): add caching to MemberRoles page

[mpaulosky]

Have Aragorn investigate adding caching to the 'MemberRoles.razor' page to improve the loading of the page.

[github-actions]

🏗️ Squad Triage — Aragorn (Lead / Architect)

Issue: #293 — [Sprint 19]feat (ui)Add-Cacheing-toMemberRoles
Assigned to: Legolas (Frontend / Blazor)
Reason: Issue relates to frontend/UI work

Team roster:

• Aragorn (Lead / Architect) → label: squad:aragorn
• Sam (Backend / .NET) → label: squad:sam
• Legolas (Frontend / Blazor) → label: squad:legolas
• Gimli (Tester) → label: squad:gimli
• Boromir (DevOps / Infra) → label: squad:boromir
• Gandalf (Security / Auth) → label: squad:gandalf
• Frodo (Tech Writer) → label: squad:frodo
• Pippin (Docs) → label: squad:pippin
• Bilbo (Tech Blogger) → label: squad:bilbo
• Ralph (Meta) → label: squad:ralph

To reassign, remove the current squad:* label and add the correct one.

[github-actions]

📋 Assigned to Aragorn (Lead / Architect)

Issue: #293 — [Sprint 19]feat (ui)Add-Cacheing-toMemberRoles

Aragorn will pick this up in the next Copilot session.

For Copilot coding agent: If enabled, this issue will be worked automatically.
Otherwise, start a Copilot session and say:
Aragorn, work on issue #293