Unquoted variables in pattern.sh cause word splitting

## Description

Multiple variables are used without quotes, which can cause word splitting and glob expansion issues if values contain spaces or special characters.

## Location

https://github.com/validatedpatterns/multicloud-gitops/blob/main/pattern.sh

```bash
command -v $1 >/dev/null 2>&1  # Should be "$1"
```

## Expected Behavior

Quote all variable expansions: `"$1"`, `"$@"`, etc.