fix(components): allow partial ui overrides on items

[lazerg]

🔗 Linked issue

Resolves #6974

❓ Type of change

• 📖 Documentation (updates to the documentation or readme)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality)
• ✨ New feature (a non-breaking change that adds functionality)
• 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

The per-item ui field is typed as Pick<Component['slots'], ...>. Pick only keeps a key optional if the source type declares it that way, and Component['slots'] falls back to an index signature whenever the generated #build/ui/* theme types don't resolve — in a Vue project without the #build/ui/* path alias, for example. Picking literal keys off an index signature makes every one of them required, so setting a single slot like ui: { linkLeadingIcon: '...' } fails to type-check with "missing the following properties: label, link, content, item, and 18 more", even though tv() merges partial slot overrides fine at runtime.

Wrapped each of those picks in Partial, which matches the runtime behaviour and is a no-op when the theme types do resolve. Same change on every component carrying a per-item ui field, since they all share the pattern.

v5 carries the same pattern, so let me know if you want a companion PR there.

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Advanced

Run ID: f6f76ae8-bdad-4bbf-b896-63d77437b850

📥 Commits

Reviewing files that changed from the base of the PR and between a96823d and d03e9c3.

📒 Files selected for processing (25)

• src/runtime/components/Accordion.vue
• src/runtime/components/Breadcrumb.vue
• src/runtime/components/Carousel.vue
• src/runtime/components/CheckboxGroup.vue
• src/runtime/components/CommandPalette.vue
• src/runtime/components/ContextMenu.vue
• src/runtime/components/DropdownMenu.vue
• src/runtime/components/FooterColumns.vue
• src/runtime/components/InputMenu.vue
• src/runtime/components/Listbox.vue
• src/runtime/components/NavigationMenu.vue
• src/runtime/components/PageAnchors.vue
• src/runtime/components/PageLinks.vue
• src/runtime/components/ProgressGroup.vue
• src/runtime/components/RadioGroup.vue
• src/runtime/components/Select.vue
• src/runtime/components/SelectMenu.vue
• src/runtime/components/Splitter.vue
• src/runtime/components/Stepper.vue
• src/runtime/components/Tabs.vue
• src/runtime/components/Timeline.vue
• src/runtime/components/Tree.vue
• src/runtime/components/content/ContentNavigation.vue
• src/runtime/components/content/ContentSurround.vue
• src/runtime/components/content/ContentToc.vue

Included review availability: Your plan provides up to 8 included reviews per hour; 7 remain after this review.

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📝 Walkthrough

Walkthrough

The change updates 25 exported ui properties across component item and content link interfaces. Each selected slot configuration now uses Partial<Pick<...>> instead of Pick<...>. Callers can provide only selected slot overrides. No runtime logic or templates changed.

Priority: ➖ Normal

Estimated code review effort: 2 (Simple) | ~10 minutes

Severity of issue fixed: Medium

Merge Risk: ⚪ Minimal · up to d03e9

No actionable current-head risk is established; the PR is mergeable after normal checks.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	Issue #6974 requires partial per-item ui overrides for NavigationMenuItem and similar types. The PR changes NavigationMenuItem.ui from Pick<...> to Partial<Pick<...>>, so a value such as `{ …
Out of Scope Changes check	✅ Passed	The changes only wrap selected slot Pick types in Partial for per-item or per-link ui fields. Issue #6974 explicitly includes similar components, so these changes support the same type-correctio…
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Title check	✅ Passed	The title clearly and concisely describes the main change: allowing partial per-item ui overrides across components.
Description check	✅ Passed	The description is directly related to the changeset. It explains the TypeScript issue, the Partial<Pick<...>> fix, runtime behavior, affected components, and linked issue.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create a new PR

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[codspeed]

Merging this PR will not alter performance

✅ 31 untouched benchmarks

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_{Comparing lazerg:fix/issue-6974-partial-item-ui (d03e9c3) with v4 (a96823d)}

[pkg-pr-new]

npm i https://pkg.pr.new/@nuxt/ui@6979

commit: d03e9c3

[benjamincanac]

Thanks! 😊