/**
 * Intelligence Hook Handlers — Wave 5-D/E of T549
 *
 * Best-effort intelligence side-effects wired into task lifecycle events.
 *
 * On task start → calculate risk; if riskScore exceeds the HIGH threshold
 * (≥ 0.8), store a warning observation so future agents see it.
 *
 * All handlers are fire-and-forget: failures MUST NOT propagate or block the
 * operation that triggered them.
 *
 * @task T549
 * @epic T549
 */
import type { PreToolUsePayload } from '../types.js';
/**
 * Handle task start: calculate risk and store a warning observation if the
 * riskScore is at or above the HIGH threshold (≥ 0.8).
 *
 * Uses deferred imports so this module can be imported in environments where
 * not all transitive dependencies (brain.db, tasks.db) are present.
 *
 * Best-effort: any error is silently swallowed.
 */
export declare function handleTaskStartIntelligence(projectRoot: string, payload: PreToolUsePayload): Promise<void>;
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