If Windows drive letter mounting for WSL is disabled, `opencode web` will not function correctly

Description

• If Windows drive letter mounting for WSL is disabled, opencode web will not function correctly.

lingh@DESKTOP-8UCKIRD:~$ opencode web
!  OPENCODE_SERVER_PASSWORD is not set; server is unsecured.

                                   ▄
  █▀▀█ █▀▀█ █▀▀█ █▀▀▄ █▀▀▀ █▀▀█ █▀▀█ █▀▀█
  █  █ █  █ █▀▀▀ █  █ █    █  █ █  █ █▀▀▀
  ▀▀▀▀ █▀▀▀ ▀▀▀▀ ▀▀▀▀ ▀▀▀▀ ▀▀▀▀ ▀▀▀▀ ▀▀▀▀

  Web interface:      http://127.0.0.1:4096/
662 |     var file = this.spawnfile = options.file, spawnargs;
663 |     if (options.args === @undefined)
664 |       spawnargs = this.spawnargs = [];
665 |     else
666 |       validateArray(options.args, "options.args"), spawnargs = this.spawnargs = options.args;
667 |       if (this.#handle = Bun.spawn({
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              ^
ENOENT: no such file or directory, posix_spawn '/mnt/c/Windows/System32/WindowsPowerShell/v1.0/powershell.exe'
      path: "/mnt/c/Windows/System32/WindowsPowerShell/v1.0/powershell.exe",
   syscall: "spawn /mnt/c/Windows/System32/WindowsPowerShell/v1.0/powershell.exe",
     errno: -2,
 spawnargs: [
  "-NoProfile", "-NonInteractive", "-ExecutionPolicy", "Bypass", "-EncodedCommand", "UwB0AGEAcgB0ACAAIgBoAHQAdABwADoALwAvADEAMgA3AC4AMAAuADAALgAxADoANAAwADkANgAvACIA"
],
      code: "ENOENT"

      at spawn (node:child_process:667:35)
      at spawn (node:child_process:14:39)
      at <anonymous> (/$bunfs/root/chunk-xwzjdf62.js:2:3353)

Plugins

Null.

OpenCode version

1.18.18

Steps to reproduce

1. On a fresh installation of Ubuntu 26.04 WSL, execute the following command:

cat /etc/wsl.conf

sudo tee --append /etc/wsl.conf <<EOF
[automount]
enabled=false
mountFsTab=false
[interop]
enabled=false
appendWindowsPath=false
EOF

# Run `wsl --shutdown` in Windows PowerShell
sudo apt update && sudo apt upgrade --assume-yes
sudo apt install --assume-yes libatomic1
curl -fsSL https://get.pnpm.io/install.sh | sh -
source ~/.bashrc
pnpm runtime set node 26.7.0 --global
pnpm add --global --allow-build=opencode-ai opencode-ai
opencode web

Screenshot and/or share link

Operating System

Ubuntu 26.04 WSL

Terminal

Windows Terminal