Fun fact! If you added a file but never committed it you can still recover it with git fsck --lost-and-found. The changes were still added to the git object store, and by grepping through the dangling blobs you can find the object containing the changes you care about.

dig mydomain.tld to see why your machine can’t find the DNS record

Fwiw too most home networks use a DNS server on the router by default. Your devices should be able to resolve an address with a DNS record set statically there instead of on the WAN.