Wiki Arcana is the ecosystem's knowledge orchestration layer. It stores knowledge as a graph plus vectors, classifies it into a hierarchy of knowledge spaces, and enforces a Jedi-Archive-style access model (public, archivist, council, hidden holocron) through Auth Arcana OIDC — never local logins. It does not replace Scrutator or Long-Term Memory: embeddings are minted by Scrutator's BGE-M3 engine, search is delegated, and memory stays with LTM; Wiki Arcana binds them together behind a single API and an MCP server for agents. Phase 1 ships the research corpus, the storage abstraction and access registry, and the public skeleton — knowledge content and links come next. Open source, MIT license.