ci: fix Windows release build — TUI-sidecar archive check used forward-slash paths

[devin-ai-integration]

Summary

The v1.5.0 release build failed only on Windows: the TUI-sidecar sanity check added in #941 greps pyi-archive_viewer output for strix/bin/strix-tui.exe, but PyInstaller stores archive paths with \ on Windows (strix\bin\strix-tui.exe), so the grep exits 1 right after strix 1.5.0 prints. This check had never run on a tag before (v1.4.1 predates #941).

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

After merge, the v1.5.0 tag needs to be moved to a commit containing this fix (or the release re-run from the fixed workflow) for the release to publish.

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

[devin-ai-integration]

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[greptile-apps]

Greptile Summary

The PR updates the release workflow’s PyInstaller archive sanity check to accept both forward- and backslash path separators, allowing the Windows TUI sidecar path to pass validation.

• Replaces the fixed forward-slash match with an extended regular expression.
• Preserves the existing platform-specific TUI executable names and release-asset validation flow.

Confidence Score: 5/5

The PR appears safe to merge, with no concrete blocking or independently actionable issue identified.

The changed archive check retains the expected TUI path and executable name while matching either path separator, and the available evidence shows the resulting expression works for both representative path forms.

Important Files Changed

Filename	Overview
.github/workflows/build-release.yml	Broadens the TUI-sidecar archive path check for cross-platform separators without changing release asset names or packaging behavior.

_{Reviews (1): Last reviewed commit: "ci: match Windows backslash paths in the..." | Re-trigger Greptile}