Zakaat on gold less than nisaab

Q:

1. I wanted to ask if the only excess wealth a person has is a Kruger coin, is one liable for zakaat as it is less than 87 grams?

2. If a person has the cash that is more than the nisaab and also has gold in the form of 1 Kruger coin only, is zakaat liable on both the cash and the Kruger coin or only the cash?

Software planning for an alcohol manufacturing company

Q: I work for a software company which makes planning software for companies. Their clients include many manufacturing companies which needs a software for planning. My role is to support the implementation of software and provide training and support for customers.

If their client is an alcohol manufacturing company, and they assign me to work on this project. Is it permissible for me to work?

Will my earnings be halaal?