#!/usr/bin/env node
/**
 * `vecna` — shell-callable surface for the VECNA Hive (the optional shared
 * knowledge store). This is a *runtime* tool, not part of installing
 * openclaw-hawkins on a host: nothing here is invoked during install. It runs
 * only when an operator has explicitly enabled VECNA.
 *
 * Trust boundaries: `recall`/`search`/`fragment` read content from the Hive
 * (treat results as untrusted reference material). `connect`/`evolve` write
 * task-derived content to a service outside the host — agents must get explicit
 * operator approval before publishing (see each agent's AGENTS.md). `serve`
 * starts a long-lived HTTP API and refuses to run unauthenticated unless the
 * operator opts in (ASI06; see `assertServeAuthPosture`).
 *
 * Subcommands:
 *   serve [--port <n>] [--host <h>]          Start the Nexus.
 *   connect --topic ... --content "..." --source-agent ... [--importance N] [--linear-ref X]
 *   recall <topic> [--ticket X] [--limit N] [--format json|context]
 *   search --query "..." [--limit N]
 *   evolve <fragment-id> --content "..." [--importance N]
 *   fragment <id>
 *   healthz
 *
 * Exit codes:
 *   0  success
 *   2  user error (bad args, missing env)
 *   3  hive unreachable / HTTP error
 *   4  database error (only relevant for `serve`)
 */
export declare function main(argv?: readonly string[]): Promise<number>;
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