fix(desktop): find linuxbrew node for the WSL backend

[CodyRay]

What Changed

Additional path for Homebrew on Linux was added, so that node installed via brew on all platforms (not just mac) will be detected as a fallback.

Why

I use Windows through WSL. After turning on the WSL backend, I got the "WSL backend couldn't start" message due to missing node. I had node installed via Homebrew for Linux. The brew install only adds the path to ~/.bashrc, so the login shell didn't have node on the path either. Homebrew on Mac was already covered in the ensure_remote_node_path for this exact case.

Note that /home/linuxbrew/.linuxbrew/bin is a fixed path for all installs. This is the static directory that brew uses for all Linux installs - it is the direct equivalent of /opt/homebrew/bin. In otherwords it isn't anything specific to my setup, machine, or a hallucinated placeholder.

Checklist

• This PR is small and focused
• I explained what changed and why
• I included before/after screenshots for any UI changes, not applicable
• I included a video for animation/interaction changes, not applicable

Workaround

If others encounter this issues add eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)" to your bash profile.

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Note

Low Risk
Small PATH fallback addition in remote shell scripts; no auth, data, or protocol changes.

Overview
Remote SSH/WSL node discovery now also looks in /home/linuxbrew/.linuxbrew/bin, the default Linux Homebrew prefix, next to the existing macOS Homebrew path.

This lets non-interactive remote shells find Node installed via brew on Linux (including WSL) when brew is only on ~/.bashrc and not on the login PATH. A unit assertion covers the new path in the generated runner script.

^{Reviewed by Cursor Bugbot for commit 7f73186. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Add Linuxbrew bin path to ensure_remote_node_path for WSL backend

Prepends /home/linuxbrew/.linuxbrew/bin to the PATH sequence that ensure_remote_node_path searches when locating a usable Node.js on the remote host. This lets the WSL backend discover a Linuxbrew-installed node. Updates the corresponding test assertion in tunnel.test.ts.

^{Macroscope summarized 7f73186.}

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[macroscopeapp]

Approvability

Verdict: Approved at 7f73186

Macroscope's review found this PR approvable — Adds the linuxbrew bin path to the existing list of directories searched for node on WSL. The change follows the established pattern exactly and includes a corresponding test assertion.

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