fix: normalize forward slashes to backslashes for Windows directory matching

[jcompagner]

Issue for this PR

#28242

Closes #28242

Type of change

• Bug fix
• New feature
• Refactor / code improvement
• Documentation

What does this PR do?

On Windows, the web UI frontend normalizes paths to forward slashes (C:/Users/...) but the database stores backslashes (C:\Users...). This caused session list queries to return 0 results after a page refresh, because the directory filter did an exact string match.

Add normalizeDirectory() that converts forward slashes to backslashes on Windows when the path looks like a drive letter path (X:/...). Apply it in the workspace-routing middleware and the session list handler.

How did you verify your code works?

i run the dev server and opened a project made some sessions and just refresh the page
Or just restart the server and let the browser reload itself, mostly on windows you loose all the sessions (or keep only 1 for some reason)

Screenshots / recordings

If this is a UI change, please include a screenshot or recording.

Checklist

• I have tested my changes locally
• I have not included unrelated changes in this PR

If you do not follow this template your PR will be automatically rejected.

[github-actions]

Thanks for your contribution!

This PR doesn't have a linked issue. All PRs must reference an existing issue.

Please:

1. Open an issue describing the bug/feature (if one doesn't exist)
2. Add Fixes #<number> or Closes #<number> to this PR description

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[github-actions]

The following comment was made by an LLM, it may be inaccurate:

Based on my search, I found several related PRs addressing similar Windows path normalization issues:

Potential Related PRs:

1. fix: normalize Windows session directory filters #26463 - "fix: normalize Windows session directory filters"

   • Directly addresses Windows session directory filtering, same core issue

2. fix: sessions missing from sidebar on Windows due to path separator mismatch #23862 - "fix: sessions missing from sidebar on Windows due to path separator mismatch"

   • Addresses sessions disappearing on Windows due to path separator issues, same root cause

3. fix: normalize Windows desktop session paths #26580 - "fix: normalize Windows desktop session paths"

   • Addresses Windows session path normalization

4. fix(app): normalize watcher paths #24341 - "fix(app): normalize watcher paths"

   • Related path normalization work on Windows

These PRs appear to be addressing the same or very similar issues with Windows path separators causing session lookup failures. Recommend checking PR #26463 and #23862 in particular as they seem most directly related to the current issue (PR #28240).

[github-actions]

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