Install Obsidian (macOS) and GitHub CLI.
brew install obsidian gh
Clone repository.
gh repo clone JunichiSugiura/JunichiSugiura
# or if you have access to JunichiSugiura/handbook-internal repository
gh repo clone JunichiSugiura/JunichiSugiura -- --recursive
cd JunichiSugiura