[bug] Log cleanup race condition deletes newest log file on repeated launches #16540

Description

Two bugs in packages/opencode/src/util/log.ts cleanup() that together cause the latest log file to be deleted when OpenCode is launched multiple times:

1. Race condition: cleanup() was called without await in init(), so it ran concurrently with new log file creation. The newly created file could appear in the glob results mid-cleanup and get deleted.

2. Non-deterministic sort: Glob.scan returns files in filesystem order (non-deterministic on Windows NTFS). Without .sort() before .slice(0, -10), the newest files could be deleted instead of the oldest.

Fix:

- cleanup(Global.Path.log)
+ await cleanup(Global.Path.log)

- const filesToDelete = files.slice(0, -10)
+ const filesToDelete = files.sort().slice(0, -10)

Plugins

No response

OpenCode version

latest dev

Steps to reproduce

1. Launch OpenCode TUI and close it
2. Repeat 10+ times
3. Check the log directory — the most recent log file may be missing

Screenshot and/or share link

No response

Operating System

Windows (most reproducible due to NTFS non-deterministic directory ordering)

Terminal

Windows Terminal