feat(FileUpload): introduce custom FileUploadItem

[vachmara]

🔗 Linked issue

Resolves #5798, resolves #6603

❓ 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

Adds support for custom FileUploadItem objects while remaining compatible with native browser files. Custom items support metadata, avatars, and application-specific fields, with previews, accessibility, model updates, tests, and documentation updated accordingly. Includes examples for existing files and dynamic upload progress/status.

📝 Checklist

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

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Team

Run ID: ceb2f701-87eb-475a-8c10-a7e1ecbc81c2

📥 Commits

Reviewing files that changed from the base of the PR and between c02d8eb and 687f8aa.

📒 Files selected for processing (3)

• docs/content/docs/2.components/file-upload.md
• src/runtime/components/FileUpload.vue
• test/components/FileUpload.spec.ts

🚧 Files skipped from review as they are similar to previous changes (2)

• test/components/FileUpload.spec.ts
• src/runtime/components/FileUpload.vue

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📝 Walkthrough

Walkthrough

FileUpload now accepts custom FileUploadItem values with metadata and avatars. Preview, model updates, removal, slots, and rendering support both custom items and native File instances. Tests cover custom item behavior. Documentation adds custom item and upload-status examples.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Merge Risk: ⚪ Minimal · up to 687f8

FileUpload now supports custom items alongside browser File values for existing-file previews, metadata, and upload status display. No concrete merge-blocking risk remains.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the primary change: adding support for custom FileUploadItem values in FileUpload.
Description check	✅ Passed	The description accurately summarizes custom items, native File compatibility, previews, tests, documentation, and upload-status examples.
Linked Issues check	✅ Passed	The implementation addresses both linked issues [#5798] [#6603] by supporting custom file items, metadata, avatar or URL-based previews, mixed model values, native File compatibility, and updated slot…
Out of Scope Changes check	✅ Passed	The code, tests, examples, and documentation changes directly support the linked FileUpload objectives. No unrelated changes are identified.
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 1…

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src/runtime/components/FileUpload.vue

Parsing error: Unexpected token )

test/components/FileUpload.spec.ts

Parsing error: Unexpected token {

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Actionable comments posted: 1

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Inline comments:
In `@src/runtime/components/FileUpload.vue`:
- Line 338: Update the avatar binding in the file upload component so
file.avatar is bound only when props.fileImage is true; otherwise preserve the
fileIcon-only display behavior.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Team

Run ID: 99bf198e-5111-46e8-a2e1-666492b9284d

📥 Commits

Reviewing files that changed from the base of the PR and between 042bf3b and 9a1f733.

⛔ Files ignored due to path filters (2)

• test/components/__snapshots__/FileUpload-vue.spec.ts.snap is excluded by !**/*.snap
• test/components/__snapshots__/FileUpload.spec.ts.snap is excluded by !**/*.snap

📒 Files selected for processing (5)

• docs/app/components/content/examples/file-upload/FileUploadItemsExample.vue
• docs/app/components/content/examples/file-upload/FileUploadStatusExample.vue
• docs/content/docs/2.components/file-upload.md
• src/runtime/components/FileUpload.vue
• test/components/FileUpload.spec.ts

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

[codspeed]

Merging this PR will improve performance by 12%

⚠️ Different runtime environments detected

Some benchmarks with significant performance changes were compared across different runtime environments,
which may affect the accuracy of the results.

Open the report in CodSpeed to investigate

⚡ 1 improved benchmark
✅ 30 untouched benchmarks

Performance Changes

	Benchmark	BASE	HEAD	Efficiency
⚡	plain <button>	1.3 ms	1.2 ms	+12%

Tip

Curious why performance improved? Comment @codspeedbot explain why performance improved on this PR, or directly use the CodSpeed MCP with your agent.

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_{Comparing vachmara:feat/file-upload-items (687f8aa) with v4 (970025f)}

[pkg-pr-new]

npm i https://pkg.pr.new/@nuxt/ui@6927

commit: 687f8aa

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