/**
 * ADR-121 Phase 12 — averageEmbeddings (HyDE) tests.
 *
 * Coverage:
 *  - Single vector returns (a normalized copy of) the input
 *  - N orthogonal unit vectors average to their geometric centroid
 *  - normalizeOutput=true produces a unit vector
 *  - normalizeOutput=false returns the raw mean
 *  - normalizeInputs=true makes magnitude irrelevant (only direction matters)
 *  - normalizeInputs=false → larger-magnitude vectors dominate
 *  - weights bias the result toward higher-weighted vectors
 *  - all-zero weights returns zero vector (no NaN)
 *  - dimension mismatch throws
 *  - empty input throws
 *  - negative weights throw
 *  - weights length mismatch throws
 *  - isUnitNorm helper correctness
 */
export {};
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