ci: tolerate repr-escaped backslashes in the release TUI-sidecar check

[devin-ai-integration]

Summary

Follow-up to #990 — the Windows release leg still fails: pyi-archive_viewer -l prints TOC entries as Python reprs, so the Windows path appears with doubled backslashes ('strix\\bin\\strix-tui.exe'), which [/\\] (exactly one separator) doesn't match.

- | grep -E "strix[/\\]bin[/\\]$TUI_NAME"
+ | grep -E "strix[/\\]+bin[/\\]+$TUI_NAME"

Verified locally that the pattern matches both strix/bin/strix-tui and the repr-escaped strix\\bin\\strix-tui.exe.

Link to Devin session: https://app.devin.ai/sessions/41db97c4aa2c42d2a2ce9a2ef59d7425
Requested by: @0xallam

[devin-ai-integration]

🤖 Devin AI Engineer

I'll be helping with this pull request! Here's what you should know:

✅ I will automatically:

• Address comments on this PR. Add '(aside)' to your comment to have me ignore it.
• Look at CI failures and help fix them

Note: I can only respond to comments from users who have write access to this repository.

⚙️ Control Options:

• Disable automatic comment, CI, and merge conflict monitoring

[greptile-apps]

Greptile Summary

This PR updates the release artifact validation to recognize Python repr-escaped Windows path separators.

• Allows one or more slash or backslash characters between the expected strix/bin path components.
• Preserves the existing platform-specific TUI filename check.

Confidence Score: 5/5

The PR appears safe to merge with no actionable defects identified.

The adjusted expression matches both ordinary archive paths and repr-escaped Windows paths while retaining the required directory components and exact sidecar filename.

Important Files Changed

Filename	Overview
.github/workflows/build-release.yml	Broadens the PyInstaller archive-listing check to handle doubled backslashes without changing release asset construction or naming.

_{Reviews (1): Last reviewed commit: "ci: tolerate repr-escaped backslashes in..." | Re-trigger Greptile}