Public Data Layer

Generated surfaces

File	Purpose
`index.json`	Version and collection counts
`catalog.json`	Flattened multi-object catalog
`graph.json`	Nodes and semantic edges
`knowledge-graph.jsonld`	Linked-data metadata

GET /v1/knowledge
GET /v1/catalog
GET /v1/topics/:id
GET /v1/glossary/:id
GET /v1/graph
GET /v1/books/:id
GET /v1/research/:id

These are planned mappings, not currently declared production endpoints.

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