`getWorktrees` logs a warn-level line every time the managed OpenCode
process or any other caller passes a directory that is not inside a
git repository. The OpenChamber desktop main.log fills with hundreds
of these "Failed to list worktrees, returning empty list: fatal: not
a git repository ..." entries over a normal session.
The empty-list fallback is already correct (worktrees are an optional
feature), but the warning is noise that hides real git failures. Use
the existing `isNotGitRepositoryError` helper to suppress the warn
specifically for the "not a git repository" case and keep the
warning for genuine failures (lock contention, permission errors,
corrupt repos, etc.).
herjarsa
629bf40d83