/**
 * Compile-time drift detector for the contracts/graph catalog duplication.
 *
 * `@opensip-tools/contracts/src/graph-catalog.ts` declares a structural
 * mirror of this engine's `Catalog` so the dashboard package can consume
 * the catalog shape without reaching into a Layer-3 tool. The duplication
 * is intentional (see graph-catalog.ts §2.4 decoupling claim) but has no
 * automated detector — when the engine adds a field, the contracts mirror
 * can drift silently and the dashboard reads the old shape.
 *
 * This test asserts the engine's `Catalog` is structurally assignable to
 * contracts' `GraphCatalog`. The producer (engine) is more specific
 * (`version: '3.0'` literal, `cacheKey: string` required) than the
 * consumer-facing contract (`version: string`, `cacheKey?: string`), so
 * the producer-to-contract direction is the load-bearing one: any new
 * field added to `Catalog` that is not absorbed by the contract surfaces
 * as a compile error here.
 *
 * The runtime body is a placeholder — vitest needs at least one `it` block
 * for the file to register. The actual assertion is the type-level
 * statement below; if it survives `tsc`, we are drift-free.
 */
export {};
//# sourceMappingURL=graph-catalog-drift.test.d.ts.map