/**
 * Physics state persistence for Hippo.
 * Stores and loads particle state (position, velocity, mass, charge, temperature)
 * in SQLite using BLOB columns for 384-dim vectors.
 */
import type { DatabaseSyncLike } from './db.js';
import type { MemoryEntry } from './memory.js';
import type { PhysicsParticle } from './physics.js';
export declare function float32ToBuffer(arr: number[]): Buffer;
export declare function bufferToFloat32(buf: Buffer | Uint8Array): number[];
/**
 * Create the memory_physics table (migration v8).
 * Call this from db.ts MIGRATIONS array.
 */
export declare function createPhysicsTable(db: DatabaseSyncLike): void;
/**
 * Load physics state for specific memory IDs (or all if no IDs given).
 */
export declare function loadPhysicsState(db: DatabaseSyncLike, memoryIds?: string[]): Map<string, PhysicsParticle>;
/**
 * Save physics state for multiple particles (batch upsert).
 */
export declare function savePhysicsState(db: DatabaseSyncLike, particles: PhysicsParticle[]): void;
/**
 * Initialize physics state for a memory from its embedding vector.
 * Returns the new particle (does not persist — caller must save).
 */
export declare function initializeParticle(entry: MemoryEntry, embedding: number[], now?: Date): PhysicsParticle;
/**
 * Delete physics state for a memory. (Also handled by CASCADE, but explicit for clarity.)
 */
export declare function deletePhysicsState(db: DatabaseSyncLike, memoryId: string): void;
/**
 * Reset all physics states from original embeddings.
 * Drops existing physics data and re-initializes from the embedding index.
 */
export declare function resetAllPhysicsState(db: DatabaseSyncLike, entries: MemoryEntry[], embeddingIndex: Record<string, number[]>, now?: Date): number;
/**
 * Refresh mass, charge, and temperature for existing particles
 * based on current memory attributes (called during consolidation).
 */
export declare function refreshParticleProperties(particles: PhysicsParticle[], entries: Map<string, MemoryEntry>, now?: Date): void;
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