export type HookTrigger = {
    phase: 'pre-tool';
    toolNames: string[];
} | {
    phase: 'post-tool';
    toolNames: string[];
} | {
    phase: 'permission-request';
    toolNames: string[];
} | {
    phase: 'session-start';
} | {
    phase: 'turn-end';
};
export interface NormalizedHookSpec {
    trigger: HookTrigger;
    /** Shell command. Adapter chooses how to invoke it (Claude: settings JSON; PI: in-process extension spawn). */
    command: string;
    timeoutSec?: number;
    /** If the hook needs to block until a webhook callback resolves it. Adapter picks the implementation mechanism. */
    blocking?: {
        mode: 'webhook';
        endpoint: string;
        ttlMin: number;
    };
}