Add first-class toolkit UI and scoped MCP routes

[RhysSullivan]

Summary

• Add first-class /toolkits routes with compatibility redirects from /plugins/toolkits.
• Add toolkit creation, connection management, per-tool allow/block controls, and delete confirmation.
• Keep local UI free of workspace/personal language while preserving grouped owner shelves where that concept exists.
• Align toolkit loading skeletons with the rendered card layout.

Recording

Fresh e2e recording for Toolkits · self-host UI creates a toolkit and configures tools:

https://raw.githubusercontent.com/RhysSullivan/executor/e2e-media/toolkits-first-class/session.webm

Opening screenshot from the same run:

Verification

• bun run --cwd e2e test:selfhost selfhost/toolkits-ui.test.ts
• bunx oxfmt --check packages/plugins/toolkits/src/page.tsx
• bun run --cwd packages/plugins/toolkits typecheck

Run artifacts are in e2e/runs/selfhost/toolkits-self-host-ui-creates-a-toolkit-and-configures-tools/.

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Status	Name	Latest Commit	Updated (UTC)
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