Do not ingest a directory as a primary source

Type: kb/types/instruction.md

V1 ingest reports require one URL-backed primary source and one primary Markdown snapshot. A directory path, checkout path, or grouped file bundle is not a supported primary input.

When asked to ingest a directory:

1. Stop before drafting an ingest or inventing source metadata.
2. Identify the single public URL whose document is the primary source.
3. If that source is a paper and the directory is one or more implementation repositories, follow ingest-paper-with-code.md. Record each inspected repository as a commit-pinned implementation secondary and keep its checkout under ignored related-systems/.
4. If the directory is one repository used as the primary source, choose a URL-backed repository document or immutable public revision as the primary, materialize one Markdown reading copy under kb/sources/.snapshots/, and use cp-skill-ingest on that file.
5. If no single URL-backed primary can be identified, report that v1 cannot represent the request. Do not create a partial ingest.

Do not write source_snapshot, encode a local path in source, hash a directory, or invent a secondary role for files that are merely members of the primary source.