Desktop 1.18.30: utility NodeService crashes intermittently on quit (SIGABRT/SIGSEGV)

Description

Environment:

• OpenCode Desktop 1.18.30 (deb, updated from 1.18.25), channel latest
• App running inside Ubuntu 24.04 distrobox container on Fedora Kinoite 44 host
• Native modules in crashing process: @lydell/node-pty-linux-x64 1.2.0-beta.12,
  @parcel/watcher-linux-x64-glibc 2.5.1 (verified under
  /opt/OpenCode/resources/app.asar.unpacked/node_modules/)

Repro:

1. Open OpenCode Desktop, use normally, then quit.
2. Repeat open/quit ~4 times. About 1 in 4 quits shows a crash notification
   for the utility process. 3 of 4 quits are clean.

Crash data (systemd-coredump):

• ai.opencode.desktop --type=utility --utility-sub-type=node.mojom.NodeService
  Signal 6 (ABRT) and Signal 11 (SEGV) on different quits, always at quit time.
• Core sizes 36-49 MB truncated (host limits: ProcessSizeMax=1G); one 46 KB.
• utility.log at crash second: [warn] (utility) sidecar exited { code: 0 }
• main.log clean, updater reports 1.18.30 up-to-date.
• GDB on host cannot resolve container paths (/opt/OpenCode only exists in
  container), core truncated so no symbol stack; file-backed mapping notes
  confirm pty.node + watcher.node loaded in the crashing process.

Ruled out:

• Crash reproduces with ALL MCPs disabled (enabled: false for every entry
  in opencode.jsonc), so it is not caused by any MCP server.
• Reproduced on 1.18.25 and 1.18.30.

Possibly related:

• microsoft/node-pty#904 (SIGABRT during Electron exit, ThreadSafeFunction
  cleanup race with node-pty)
• opencode#17068 (sidecar not terminated on Desktop close)

Attachments: Crashpad .dmp from
~/.config/ai.opencode.desktop/Crashpad/pending/ + utility.log snippet above.

a7bf82a0-29f0-4a8c-91f4-c4cd85f1d361.zip

Plugins

No response

OpenCode version

1.18.30.

Steps to reproduce

No response

Screenshot and/or share link

No response

Operating System

Ubuntu 24.04 (distrobox container) on Fedora Kinoite 44 host

Terminal

Konsole 26.08