waitfordb is a small Go tool shipped as a container image, used as a Kubernetes
initContainer to block an app from starting until its database is ready. It
replaces the hand-written psql-in-a-shell init steps on the arrstack.
Creates the unkin/waitfordb Gitea repo (Go tool settings mirroring node-lookup:
public, squash merges, delete branch after merge). branch_protection is omitted
on creation to avoid requiring Woodpecker status checks that do not exist until
the first pipeline runs; it will be added in a follow-up PR once CI is green.
