`opencode` process orphans when its parent exits

[nickjvandyke]

Description

nickjvandyke/opencode.nvim#118

This is a big problem because:

1. The plugin will auto-connect to orphaned opencode processes that have no TUI
2. Even if I worked around the above, each opencode process consumes ~500MB of memory

Plugins

none

OpenCode version

1.1.53

Steps to reproduce

1. Launch opencode in a way that gives it a parent process. e.g. Neovim's vim.fn.jobstart or, directly in your terminal, fish -c opencode or (untested, but presumably) bash -c opencode
2. pgrep -fl opencode to find the parent and opencode PIDs
3. kill -9 <parent_pid>
4. pgrep -fl opencode, observe that opencode itself is still running
5. ps -o ppid= -p <opencode_pid>, observe that opencode's parent PID is now 1

I'm not certain this is directly opencode's fault, but it appeared only recently, and I can't think what would have changed otherwise.

Screenshot and/or share link

Operating System

macOS 15.6.1

Terminal

Ghostty

[nickjvandyke]

This occurs in a more typical workflow too: run opencode directly in your terminal, and close the terminal window. The process sticks around.

Basically opencode doesn't seem to shut down correctly unless closed explicitly via ctrl-c in its TUI.