/**
 * Single owner for the "is this build failure the tenant's fault?" question.
 *
 * Two layers need the answer and cannot import each other: the module loader
 * (which tags errors at their capture seam) and observability (which must not
 * depend on the rendering layer). They exchange the verdict through a shared
 * symbol, but the verdict itself is computed here so a new tenant-facing slug
 * only has to be added once. Duplicating the slug set drifts silently — the
 * same error would classify differently depending on which seam saw it first.
 */
/**
 * Whether `error` describes tenant source or content failing to build (a page
 * that does not compile, MDX that does not parse) rather than a framework
 * fault.
 *
 * Recognizes two discriminators, both written at the seam that knows:
 * - an explicit `tenantBuildFailure: true` error context, set by a compiler
 *   stage that inspected the diagnostic, and
 * - a tenant-facing BUILD registry slug.
 *
 * The module loader's symbol tag is deliberately *not* read here: it is set
 * from this predicate, so reading it back would be circular.
 */
export declare function isTenantSourceBuildError(error: unknown): boolean;
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