ERROR: search requires a catalog source.
Provide one of:
  --catalog-source <git-url>@<ref>       # e.g. --catalog-source https://example.com/org/manifest-repo.git@main
  KANON_CATALOG_SOURCES=<git-url>@<ref>  # set as env var (one entry per line), then re-run

The CLI flag takes precedence when both are set.
A catalog source identifies a manifest repo (a git repository whose
repo-specs/ directory exposes installable kanon dependencies).
See docs/catalogs-explained.md for what a manifest repo is and how to find one.
See docs/configuration.md for the full configuration reference.
