Repository convention
A realm is a git repo whose name begins with realm- (e.g. realm-github, realm-stripe, realm-research). The host installs a realm by cloning it into a world’s realms/ directory.
Realm sources are configured at the host level. A typical host configuration:
# host application.ymlembabel: directory: realm-sources: - name: embabel type: org - name: johnsonr type: userEach entry exposes the realms whose name matches realm-* from the given GitHub org or user.

