DX-027: Wire the shared design system into apps/docs

[IbrahimIjai]

Context

The docs app must define no tokens of its own. It consumes
@workspace/ui and the tokens in packages/ui/src/styles/globals.css, which is
what keeps the docs and the app looking like one product. See
docs/dx_1/001_docs_site.md §5 and DESIGN.md.

Scope

• Add @workspace/ui as a workspace dependency and import its globals.css.
• Configure Tailwind v4 in the docs app to consume the shared @theme block —
  no tailwind.config.js, matching the repo's CSS-first setup.
• Extend scripts/check-design-tokens.ts to scan apps/docs on the same terms
  as apps/web, with no new allowlist entries.
• Render one primitive from @workspace/ui (a Button) on the placeholder page
  to prove the pipeline end to end.
• Self-host fonts through the existing mechanism; no remote font requests.

Acceptance criteria

• bun run check:tokens covers apps/docs and passes with zero violations
  and zero new allowlist entries.
• The docs app defines no color, spacing, radius, or type token of its own.
• A shared primitive renders correctly in both themes.
• No network font or asset request in the built output.

Out of scope

• The MDX component map (DX-034) and docs-specific chrome (DX-030).

---

Spec: docs/dx_1/001_docs_site.md §5 · Depends on: DX-026

[Morrison26-gif]

@Morrison26-gif has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hello maintainer, I've reviewed the task and I'd love to be assigned this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Morrison26-gif to this issue.

[Oluwasuyi-Oluwatimilehin-Daniel]

@Oluwasuyi-Oluwatimilehin-Daniel has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hello @maintainer, I’d like to work on this issue. I have experience handling similar tasks and can start immediately. And I will deliver at the shortest possible time.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Oluwasuyi-Oluwatimilehin-Daniel to this issue.

[0takuc0mrade]

@0takuc0mrade has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hi maintainer, I'd like to work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @0takuc0mrade to this issue.

[drips-wave]

Congratulations, @0takuc0mrade! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on August 31, 2026.

🧑‍💻 @0takuc0mrade: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

🌊 Happy Wave 🌊

[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox as part of the Third Campaign campaign!

@0takuc0mrade's PR #636 was approved and merged by @IbrahimIjai.

🏆 @0takuc0mrade: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (675 total points). Track your full progress on GrantFox.

👏 Great work, @0takuc0mrade! Keep contributing to SO4-Markets.

[drips-wave]

This issue has been completed by @0takuc0mrade as part of the Stellar Wave Program's 8th Wave 🥳

😎 @0takuc0mrade: You earned 200 Points for completing this issue! After the current Wave ends, you'll be eligible for a percentage of the Wave's reward pool based on the percentage of total points you've earned. Learn more here. You can also Leave a review to share your experience working on this issue.

🧑‍💻 Repo maintainers: How'd the contributor do? Leave a review to share your experience working with them.