feat: migrate from naive-ui to Nuxt UI

[Copilot]

🔗 Linked issue

Resolves the migration from naive-ui to Nuxt UI component library.

📚 Description

Complete migration from naive-ui to Nuxt UI across all components. Replaced 11 naive-ui components with their Nuxt UI equivalents while maintaining identical functionality and visual appearance.

Component Mapping

• n-button → UButton - Updated type prop to color, added variant="solid" for primary buttons, variant="link" for text-style buttons
• n-popover → UPopover - Changed slot structure: trigger content in default slot, panel in #content slot
• n-input → UInput - Changed v-model:value to v-model
• n-form-item → UFormGroup - Direct replacement with error/label props
• n-alert → UAlert - Updated color values (red → error)
• n-checkbox → UCheckbox - Changed v-model:checked to v-model
• n-flex → Native flex divs with Tailwind classes
• n-layout/n-layout-header → Native divs with absolute/fixed positioning

Files Changed

• Removed NaiveConfig wrapper from app.vue
• Updated nuxt.config.ts to use @nuxt/ui module
• Migrated 17 component/page files
• Updated Storybook story for button component to show solid, ghost, and link variants
• Removed naive-ui and @bg-dev/nuxt-naiveui dependencies
• Added variant="solid" to all primary action buttons (download, submit, close) to ensure proper background styling

Example Migration

<!-- Before -->
<n-button type="primary" size="large">
  <template #icon>
    <n-icon><Icon name="..." /></n-icon>
  </template>
  Download
</n-button>

<!-- After -->
<UButton variant="solid" color="primary" size="xl">
  <template #leading>
    <Icon name="..." />
  </template>
  Download
</UButton>

Nuxt UI v4 Button Variants

Nuxt UI v4 requires explicit variant prop on buttons:

• variant="solid" - Filled buttons with background (used for primary actions)
• variant="link" - Text-style buttons without background
• variant="ghost" - Subtle buttons with hover effects

Validation

• Build and tests passing
• TypeScript errors resolved
• No security vulnerabilities (CodeQL scan)
• Manual testing confirms proper button backgrounds and styling

Original prompt

Completely migrate from naive-ui to nuxt ui. Replace all occurences of all naive-components with the corresponding component from nuxt ui. Keep storybook stories, but migrate them to the new component. Afterwards, remove naive-ui dependency.

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[github-actions]

Deployed 0c4f115 to https://gentle-forest-03418aa03-2852.westeurope.3.azurestaticapps.net

[tobiasdiez]

@copilot there seems to be something wrong with your code, in particular all the buttons don't show a background. Does this need to be configured for nuxt ui? Or something like:

  <UApp>
    <NuxtPage />
  </UApp>

should be added.

See also https://ui4.nuxt.com/raw/docs/components/button.md for how to properly use buttons, and fix those.

[Copilot]

@copilot there seems to be something wrong with your code, in particular all the buttons don't show a background. Does this need to be configured for nuxt ui? Or something like:

  <UApp>

...

Fixed in commit 65a7e30. The issue was that Nuxt UI v4 requires an explicit variant prop on buttons. The default variant is "soft" which has no background. I've added variant="solid" to all primary action buttons (download, submit, etc.) to restore the solid backgrounds.

Before (no backgrounds):

After (with solid backgrounds):

The migration now correctly uses:

• variant="solid" for primary action buttons with backgrounds
• variant="link" for text/link-style buttons
• variant="ghost" for subtle buttons