[Bug] Regression: TUI is no longer able to be reloaded using SIGUSR2

[matt-dong-123]

Description

After the update to 1.2.15, I can no longer reload opencode's TUI using pkill -USR2 opencode, when in previous versions (e.g. 1.2.10) I could do that. I suspect that this is related to the TUI/server configuration split.

I have not tested options defined in opencode.json.

Plugins

none

OpenCode version

1.2.15

Steps to reproduce

1. Open opencode
2. Change TUI configuration (such as theme) and save
3. Run pkill -USR2 opencode
4. See bug: theme doesn't change
5. Exit opencode and run again, seeing that the theme does change

Screenshot and/or share link

No response

Operating System

macOS 26.3

Terminal

Ghostty

[kommander]

@Hona are we using canary for MacOS as well that might have changed signal handling?