fix(cli-repl): add best guess about installation method to buildInfo() MONGOSH-2915

[addaleax]

No description provided.

[Copilot]

Pull Request Overview

This PR adds a best guess about the installation method to the buildInfo() function in the CLI REPL package. The implementation analyzes environment variables, file paths, and system properties to determine how MongoDB shell was installed.

• Adds installationMethod field to BuildInfo interface with types for npx, homebrew, linux-system-wide, or other
• Implements detection logic using environment variables and filesystem paths
• Updates build info type definitions to properly handle the new field

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
packages/cli-repl/src/build-info.ts	Adds installation method detection logic and updates interface
packages/build/src/build-info.ts	Updates build info type definitions and removes unused import

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[Copilot]

The condition checks if the file owner's UID is 0 (root), but this doesn't guarantee system-wide installation. Files in /usr/bin/ could be owned by root even in local installations. Consider checking if the current process has root privileges instead, or remove this condition since the path check may be sufficient.

Suggested change

	process.execPath.startsWith('/usr/bin/') &&
	(await fs.stat(process.execPath)).uid === 0
	process.execPath.startsWith('/usr/bin/')

[addaleax]

^ I don't think Copilot is making a lot of sense here?

[Copilot]

The regex pattern /\\bhomebrew\\b/i is duplicated. Consider extracting it to a constant to avoid repetition and make maintenance easier.

[addaleax]

No strong feelings