[fx]

The landing site duplicated command-copy and theme-toggle controls already suitable for the shared UI library. Use the published upstream controls, remove the local implementations, and keep application-level interaction tests for copy and theme behavior.

Use explicit Tailwind application and library sources so dependency internals are not scanned. Preserve the site's content, layout, and development host configuration.

Contract: docs/changes/0046-adopt-upstream-ui-controls.md and docs/specs/architecture/index.md. This completes 0046. The exact upstream preview 0.0.0-a481115 is pinned in the dependency manifest and lockfile; it includes the merged packaging and component contributions. Move the pin to a stable release once one includes these changes.

Test plan

• Install from the frozen published dependency lockfile without a local package link.
• Run the unified root/site quality check with 100% required coverage and both builds passing.
• Verify the final published controls in Chromium: multiline clipboard content, accessible feedback, both theme directions, keyboard use, and narrow-screen layout.
• Confirm no browser console errors and no chart-selector CSS warnings.

[Copilot]

🟡 Changes recommended

The test leaves a process-wide fake clipboard installed because cleanup does not restore it, creating order-dependent behavior and potentially masking the fallback path.

1 open issue

• Restore navigator.clipboard after each test · New

What changed in this PR

This pull request replaces the site's duplicated command-copy and theme-toggle controls with the published @fx/ui components while preserving the existing layout, content, styling, and development configuration.

Changes:

• Uses the pinned upstream CommandBlock, ThemeToggle, and ThemeProvider components.
• Removes the local control implementations and redundant component tests.
• Adds application-level interaction coverage for copy and theme behavior.
• Restricts Tailwind scanning to explicit application and library sources.
• Updates dependency locks and records change 0046 as complete.

This pull request requires changes.

File	Description
site/​test/​components.test.tsx	Removes tests for the deleted local controls.
site/​test/​application.test.tsx	Adds application-level copy and theme interaction tests.
site/​src/​index.css	Configures explicit Tailwind sources for site and library code.
site/​src/​components/​ThemeToggle.tsx	Removes the local theme-toggle implementation.
site/​src/​components/​CommandBlock.tsx	Removes the local command-copy implementation.
site/​src/​App.tsx	Imports and renders the shared controls from @fx/ui.
site/​package.json	Pins the published @fx/ui preview dependency.
site/​bun.lock	Locks the updated UI package and dependency metadata.
docs/​index.yml	Registers change 0046 as complete.
docs/​index.md	Adds change 0046 to the change history index.
docs/​changes/​0046-adopt-upstream-ui-controls.md	Documents the upstream-control adoption and requirements.

_{Review effort: Lite}

[Copilot]

🔵 Needs a closer look

An active documentation issue leaves the new 0046 entry outside the Changes table because of an extra blank line.

No open issues 🎉

1 previously missed issue

In code that hasn't changed since last review

Remove blank line so 0046 remains in the Changes table

docs/​index.md:24

The blank line before this new row terminates the Markdown table, so the 0046 entry renders as a standalone pipe-delimited paragraph instead of appearing in the Changes table. Remove the separator so this row stays contiguous with 0045.

1 resolved since last review

• Restore navigator.clipboard after each test

_{Review effort: Lite}

[Copilot]

🟢 Approval recommended

The evidence identifies no unresolved review concerns for the shared-control migration.

No open issues 🎉

_{Review effort: Lite}