v0.3.0-beta.4

No curated changelog entry for 0.3.0-beta.4 — see commits below.

What's Changed

• Add one-off design system copy to and from Claude Design (prototype) by @ivenxu in #16
• openspec: design system from a URL, and reconciling DESIGN.md with tokens.css by @ivenxu in #20
• Recommend a design system from the conversation or a few questions by @ivenxu in #19
• Reconcile bundled design systems; add design system from a website by @ivenxu in #21
• Fix design-system-from-url issues found on dating.com by @ivenxu in #22
• Propose Claude-ready design system builds (openspec) by @ivenxu in #23
• Build every bundled design system for Claude Design by @ivenxu in #24
• feat(desktop-extension): declare Linux in the .mcpb manifest by @ivenxu in #25
• Let catalog tools run before a folder is set; compact the full skill list by @ivenxu in #26
• Recognise Claude Desktop's real MCP client name by @ivenxu in #27

Full Changelog: v0.3.0-beta.3...v0.3.0-beta.4