opencode-cli sidecar process not terminated when opencode electron desktop is closed

[xpaksi]

Description

When closing the OpenCode Electron window, the opencode-cli sidecar process is not terminated. Re-launching the app spawns a new opencode-cli instance, causing multiple processes.

SIGTERM via Ctrl+C (when running the binary directly) correctly stops both the Electron window and the sidecar — but simply closing the Electron window does not, regardless of how the app was launched. Somehow running the binary directly, have faster startup time.

I can confirm this also happen in Opencode Electron Desktop on MacOS running on Macbook Air M2.

Plugins

I don't have any installed plugins

OpenCode version

1.2.24

Steps to reproduce

1. Open the OpenCode Electron Desktop
2. Close the Opencode Electron Desktop
3. See the process list, in my case i'm using btop. opencode-cli process still running.
4. Open the OpenCode Electron Desktop again. It will spawn another opencode-cli process.
5. I have to kill it manually in order to kill the opencode-cli process

Screenshot and/or share link

Operating System

ArchLinux x86_64

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• Missing SIGHUP handler causes orphaned processes to leak ~4.7 GB each after terminal death #14504: Missing SIGHUP handler causes orphaned processes to leak — same symptom of opencode-cli processes not being cleaned up on close
• [BUG] Opencode process survives terminal close — missing SIGHUP handler causes orphaned process accumulation #12767: Opencode process survives terminal close — missing SIGHUP handler causes orphaned process accumulation

While those issues focus on the TUI/CLI process not handling SIGHUP when a terminal closes, the root symptom (opencode-cli processes not terminating on close) is similar. It may be worth checking if the Electron desktop app's sidecar management is related to or a separate instance of the same underlying cleanup issue.

[vaishnavmhetre]

I've opened a fix for this in #23018 — adds a window-all-closed handler to the Electron app so the opencode-cli serve sidecar gets killed when the window is closed on macOS.

Root cause: on macOS, closing the window doesn't quit Electron, so the existing before-quit/will-quit cleanup hooks never fire. The sidecar survives indefinitely.