Update empty states and authentication popup

[rafavalls]

Summary by cubic

Adds new empty state illustrations and refreshes the OAuth authentication popup for a clearer, more consistent UI. Improves the settings and logs views with context-specific visuals.

• New Features

  • Added SVGs for success, muted success, error, and logs empty states.
  • Connected images to EmptyState in Connection Settings (“This server is all set!”) and Monitoring Logs (“No logs found”).

• Refactors

  • Redesigned OAuth callback screen: removed Card UI and icons, added success/error illustrations and a centered layout with clearer messaging and a loading spinner.

^{Written for commit 71533ca. Summary will update on new commits.}

[github-actions]

🧪 Benchmark

Should we run the MCP Gateway benchmark for this PR?

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Reaction	Action
👍	Run quick benchmark (10 & 128 tools)

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[github-actions]

Release Options

Should a new version be published when this PR is merged?

React with an emoji to vote on the release type:

Reaction	Type	Next Version
👍	Prerelease	1.0.16-alpha.1
🎉	Patch	1.0.16
❤️	Minor	1.1.0
🚀	Major	2.0.0

Current version: 1.0.15

Deployment

• Deploy to production (triggers ArgoCD sync after Docker image is published)

[cubic-dev-ai]

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