UI report tab is empty when navigated after "View suite source code"

[hi-ogawa]

Describe the bug

The report tab in UI can show file and test level summaries like:

• File

• Test

For suites, the same tab becomes blank:

I thought this isn't reachable but technically exists if you navigate through "View suite source code" then click "Report" tab.

Reproduction

The above report is generated in the repo via

• pnpm -C test/ui test-fixtures --root fixtures/main --reporter=html --run
• then open test/ui/fixtures/main/.vitest/index.html

System Info

na

Used Package Manager

pnpm

Validations

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• Read the Contributing Guidelines.
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• The provided reproduction is a minimal reproducible example of the bug.

[silentiris]

Opened #10977 — the test computed in FileDetails.vue now guards against suite tasks so the file-level report renders instead of crashing on test.annotations.length.