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Jack Ye
5d1cb479e8
One page was carrying two layers. The catalog answers what exists and what it is called -- names, hierarchy, resolution, and the grants that follow the hierarchy. The lakehouse is everything that acts on those names: storing rows, searching them, deriving new ones, and keeping it all fast. Separating them makes the dependency visible. The catalog is a specification another engine can implement, which is why a Lance table is reachable without LanceDB; the lakehouse is where the cost and the tuning live. Governance belongs to the catalog because the hierarchy is what a grant attaches to, and maintenance belongs to the lakehouse because it is the files being rewritten. Also fixes a corruption from an earlier bulk link rewrite: "central metadata/catalog services" in prose had become a path.