Remove '고민' from MULTILINGUAL_KEYWORDS as it triggers false
positives in everyday Korean speech. The keyword '생각' (thinking)
remains for intentional think-mode activation.
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>