fix(ui): clarify MCP Servers and Virtual Servers naming in admin UI

[kimsehwan96]

🔗 Related Issue

N/A

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📝 Summary

Clarify the Admin UI tab headers to reduce naming confusion between MCP Servers and Virtual Servers.

• "MCP Servers & Federated Gateways (MCP Registry)" → "MCP Servers (Registry)"
• "Virtual MCP Servers" → "Virtual Servers (Federated MCP Endpoints)"

The "Federated Gateways" label was misleading on the MCP Servers tab — federation is what Virtual Servers do (combining tools/resources from multiple MCP servers into a single endpoint), not what the MCP Servers registry does.

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🏷️ Type of Change

• Bug fix
• Feature / Enhancement
• Documentation
• Refactor
• Chore (deps, CI, tooling)
• Other (describe below)

Admin UI changes.

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🧪 Verification

Check	Command	Status
Lint suite	make lint	pass
Unit tests	make test	pass
Coverage ≥ 80%	make coverage	pass

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✅ Checklist

• Code formatted (make black isort pre-commit)
• Tests added/updated for changes
• Documentation updated (if applicable)
• No secrets or credentials committed

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📓 Notes (optional)

UI-only text change, 2 lines modified in admin.html. No logic or behavior changes.

[gcgoncalves]

Hi, @kimsehwan96, thanks for your pull request! Although I agree that the terminology is somewhat confusing, I do not agree with the proposed solution, as it goes too vebose and quite wide on the UI. Maybe a naming refactor might be discussed in the community, what do you think of opening a discussion about it?

[a-effort]

Appreciate your feedback; thank you for contributing! We're currently redesigning the UI and will address naming as part of that broader initiative.

[kimsehwan96]

Thanks @gcgoncalves @a-effort — agreed, happy to close. Just wanted to ping the issue with this PR; the naming refactor is better left to maintainers/collaborators.