Fix dot placement in previous file name

[jonatanklosko]

In #434 I missed that the same problem applies to previous file name, this PR applies the same fix. After the change, no tests failed, so I added a new one to cover it.

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Project	Deployment	Actions	Updated (UTC)
pierrejs-diff-demo	Ready	Preview	Mar 27, 2026 8:02pm
pierrejs-docs	Ready	Preview	Mar 27, 2026 8:02pm

[Copilot]

Pull request overview

Updates the diffs header rendering so the previous filename in renamed-file headers gets the same bidirectional isolation fix already applied to the current filename, preventing leading-dot files from visually “moving” the dot under the RTL/ellipsis styling used in the header.

Changes:

• Wrap prevName text in a <bdi> element in the default header renderer.
• Add a snapshot test case covering the default “renamed file” header AST output.
• Update snapshots to reflect the new <bdi> wrapper in the previous-name node.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
packages/diffs/src/utils/createFileHeaderElement.ts	Wraps prevName in <bdi> to isolate bidi rendering under RTL header styling.
packages/diffs/test/createFileHeaderElement.test.ts	Adds a new snapshot test for the default renamed-file header output.
packages/diffs/test/snapshots/createFileHeaderElement.test.ts.snap	Records the updated AST shape including the new <bdi> node for prevName.

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[amadeus]

Thanks for the followup fix!