Bug: Desktop app does not terminate opencode-cli serve child processes on quit (macOS)

[chenyizhe]

Description

When closing the OpenCode Desktop app on macOS, the spawned opencode-cli serve child processes are not terminated. They remain running as orphans, consuming significant CPU and memory.

Steps to Reproduce

1. Launch OpenCode Desktop on macOS
2. Use the app normally (the app spawns opencode-cli serve as a sidecar)
3. Quit the OpenCode Desktop app (Cmd+Q or menu → Quit)
4. Run ps aux | grep opencode

Expected Behavior

All opencode-cli serve child processes should be terminated when the Desktop app quits.

Actual Behavior

opencode-cli serve processes remain running after the Desktop app is closed. Each new launch/restart accumulates additional orphan processes.

Observed 5 orphan processes after a few days of normal usage:

chenyizhe  5929  71.6%  2.6%  opencode-cli serve --hostname 127.0.0.1 --port 63714
chenyizhe  7077  71.3%  2.6%  opencode-cli serve --hostname 127.0.0.1 --port 64335
chenyizhe 95875  68.9%  2.2%  opencode-cli serve --hostname 127.0.0.1 --port 49585
chenyizhe 77393  67.1%  2.2%  opencode-cli serve --hostname 127.0.0.1 --port 52235
chenyizhe 83197  66.5%  2.2%  opencode-cli serve --hostname 127.0.0.1 --port 60205

Each process consumed ~65-72% CPU and ~350-430MB RAM, totaling ~350% CPU and ~2GB RAM.

Workaround

pkill -9 -f opencode-cli

Environment

• OS: macOS
• OpenCode: Desktop app (latest)
• Architecture: Apple Silicon (arm64)

[github-actions]

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

• opencode-cli sidecar process not terminated when opencode electron desktop is closed #17068: opencode-cli sidecar process not terminated when opencode electron desktop is closed (same root cause — Electron window close does not kill sidecar)
• opencode process orphans when its parent exits #13001: opencode process orphans when its parent exits (related orphan process accumulation with high memory/CPU usage)
• opencode windows 桌面应用关闭后opencode-cli.exe不会自动关闭并且占用大量内存和cpu #18199: opencode-cli.exe not auto-closed after desktop app closes on Windows (same issue, Windows)

[chenyizhe]

Duplicate of:

• opencode-cli sidecar process not terminated when opencode electron desktop is closed #17068 — opencode-cli sidecar process not terminated when opencode electron desktop is closed (macOS/Linux, same root cause)
• opencode process orphans when its parent exits #13001 — opencode process orphans when its parent exits (orphan process accumulation with ~500MB/process memory)
• opencode windows 桌面应用关闭后opencode-cli.exe不会自动关闭并且占用大量内存和cpu #18199 — opencode-cli.exe not auto-closed after desktop app closes on Windows (same issue, Windows)

Closing this as a duplicate. See #17068 for the canonical macOS report.