/**
 * session_start hook — initializes the engram session record.
 *
 * Context injection has moved to the before_agent_start hook, which receives
 * full agent identity via ctx. This hook only calls initSession so the server
 * can track the conversation from the beginning.
 */
import type { EngramRestClient } from '../client.js';
import type { PluginConfig } from '../config.js';
import type { SessionStartEvent, PluginHookContext, PluginLogger } from '../types/openclaw.js';
/**
 * Handle the session_start hook.
 *
 * @param event  - The session_start event from OpenClaw.
 * @param ctx    - The hook context containing agent identity fields.
 * @param client - Shared engram REST client.
 * @param config - Resolved plugin config.
 * @param logger - Optional logger (falls back to console).
 */
export declare function handleSessionStart(event: SessionStartEvent, ctx: PluginHookContext, client: EngramRestClient, config: PluginConfig, logger?: PluginLogger): Promise<void>;
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