Copilot using vscode's ripgrep

[roblourens]

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[Copilot]

Pull request overview

Updates the Copilot agent host integration so the Copilot CLI subprocess can use VS Code’s shipped ripgrep instead of relying on a Copilot-bundled ripgrep being copied into the SDK during packaging.

Changes:

• Add @vscode/ripgrep’s binary directory to the Copilot CLI subprocess PATH (and set USE_BUILTIN_RIPGREP=0) in the agent host.
• Stop copying ripgrep into @github/copilot/... during packaging; keep only node-pty prebuild copying.
• Remove macOS universal-app and Mach-O verification special-casing for Copilot’s ripgrep directory.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
src/vs/platform/agentHost/node/copilot/copilotAgent.ts	Injects VS Code’s ripgrep location into the Copilot CLI subprocess environment.
build/gulpfile.vscode.ts	Removes packaging-time copying of ripgrep into the Copilot SDK layout.
build/darwin/verify-macho.ts	Stops skipping Copilot ripgrep paths during Mach-O architecture validation.
build/darwin/create-universal-app.ts	Removes cross-copying and arch-file patterns for Copilot ripgrep in universal app creation.