/**
 * Single source of truth for the hippo-memory binary's package version.
 *
 * Bumped manually on every release alongside this file + four other package
 * manifests (package.json, openclaw.plugin.json,
 * extensions/openclaw-plugin/package.json,
 * extensions/openclaw-plugin/openclaw.plugin.json) and the lockfile —
 * five manifests in total carrying the version field.
 *
 * Used by:
 *   - src/db.ts rollback-safety guard (refuses to open a DB stamped with
 *     min_compatible_binary newer than this).
 *   - src/server.ts HTTP /health.
 *   - src/mcp/server.ts MCP serverInfo.
 *
 * Why not read package.json at runtime: the npm-published bundle ships
 * compiled `dist/` files that may not have package.json on a relative path
 * an ESM `import` can resolve cleanly, and a hardcoded constant survives
 * any packager that drops .json files.
 */
export declare const PACKAGE_VERSION = "1.43.2";
/** Compares plain x.y.z versions, positive if a > b; tags throw so the rollback guard never misfires silently. */
export declare function compareSemver(a: string, b: string): number;
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