feat: embed Windows VERSIONINFO in tgrep.exe

[msftsiwei]

Summary

Add Windows VERSIONINFO resource embedding so that signed grep.exe shows ProductName, FileVersion, CompanyName, etc. in the Windows "Properties → Details" tab.

Problem

After OneBranch signing, grep.exe has a valid Authenticode signature but no product metadata (ProductName, FileVersion, etc. are all blank). This is because Rust binaries don't include Windows VERSIONINFO resources by default.

Solution

• Add winresource as a Windows-only build dependency in grep-cli/Cargo.toml
• Create grep-cli/build.rs to embed VERSIONINFO with:
  • ProductName: tgrep
  • FileDescription: tgrep - trigram-indexed grep for large codebases
  • CompanyName: Microsoft Corporation
  • LegalCopyright: Copyright (c) Microsoft Corporation. All rights reserved.
  • InternalName: tgrep
  • OriginalFilename: tgrep.exe
  • FileVersion / ProductVersion: auto-populated from Cargo.toml

Reference

Same pattern used by other Microsoft Rust projects:

• microsoft/vscode (winresource)
• microsoft/coreutils (winresource + manifest)
• microsoft/python-environment-tools (winresource)

All three use OneBranch + onebranch.pipeline.signing@1 with external_distribution profile — same as tgrep.

Changes

• grep-cli/Cargo.toml: add [target.'cfg(windows)'.build-dependencies] winresource = "0.1"
• grep-cli/build.rs: new file, embeds VERSIONINFO on Windows builds

Testing

• No pipeline changes needed — VERSIONINFO is embedded at compile time
• OneBranch signing signs the final binary which already contains the resource
• Verify after next OneBranch build: right-click tgrep.exe → Properties → Details

[Copilot]

Pull request overview

Adds a Windows build-time resource step so the produced (and later OneBranch-signed) tgrep.exe includes standard VERSIONINFO metadata (ProductName, FileVersion, CompanyName, etc.) visible in Windows Explorer “Properties → Details”.

Changes:

• Add winresource as a Windows-only build dependency for tgrep-cli.
• Introduce a tgrep-cli/build.rs build script that compiles VERSIONINFO into the Windows binary.

Show a summary per file

File	Description
tgrep-cli/Cargo.toml	Adds Windows-only winresource build dependency to enable resource embedding.
tgrep-cli/build.rs	New build script that sets VERSIONINFO fields and compiles them into tgrep.exe.

Copilot's findings

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• Files reviewed: 2/2 changed files
• Comments generated: 1

[Copilot]

Copilot's findings

• Files reviewed: 2/3 changed files
• Comments generated: 2