Corpus taxonomy, filing, indexing.

No taxonomy; document type ambiguous from filename alone; documents scattered across ad-hoc locations; no index. Agent cannot reliably locate or classify documents

Informal conventions exist (naming patterns, rough folder structure) but inconsistently applied; some document types are distinguishable, others are not; no index — retrieval requires human navigation or broad search

Explicit type system enforced: every document carries a type marker (frontmatter field, filename prefix, or designated folder per type); filing structure is consistent and documented; corpus is indexed and agent-queryable by type, project, and recency. Humans and agents can reliably find what they need

Taxonomy evolves with use: new document types extracted from observed patterns and formalised; stale or merged types deprecated with migration; retrieval success rate tracked; filing gaps (documents created outside the taxonomy) auto-flagged and remediated