fix: slow opencode --version cause mismatch version

[phanen]

This happened in background, version can be still nil when used.

$ time opencode --version
1.17.10

________________________________________________________
Executed in  403.82 millis    fish           external
   usr time  516.98 millis  522.00 micros  516.46 millis
   sys time   45.78 millis    0.00 micros   45.78 millis