/**
 * ADR-472: a stored embedding as int8 + scale, for `memory list --embeddings`. Pure; no store access.
 */
/** Most embeddings `memory list --embeddings` will emit per call, and the longest vector it will encode. */
export declare const MAX_LIST_EMBEDDINGS = 500;
export declare const MAX_EMBEDDING_DIMS = 4096;
/** A stored embedding as int8 with one scale, base64: ~1/4 the bytes of rounded JSON floats, enough for a 2D projection or a cosine screen. */
export type EmbeddingQ8 = {
    dims: number;
    scale: number;
    b64: string;
};
/**
 * Read-only view of a stored embedding (a JSON array in the `embedding` column) as int8 + scale. Returns undefined for a missing,
 * malformed, non-finite, constant-zero or over-long vector, so a caller never gets a guessed one. Each value is within scale/2 of the
 * original (scale = max|v| / 127); cosine against the original stays above 0.9999 for unit-scale text embeddings.
 */
export declare function encodeEmbeddingQ8(stored: unknown): EmbeddingQ8 | undefined;
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