/**
 * Legacy Codex global-hook registration parser (PRI-625 Slice D; SPEC rev 2
 * §17 legacy-installer retirement).
 *
 * Pure semantics — NO I/O here. Each consumer (installer refusal, health
 * dualRegistration, setup flows) reads ~/.codex/hooks.json at its own edge
 * and hands the parsed JSON to this ONE parser, so the "is a PD-owned legacy
 * registration present" fact has a single authority without dragging a
 * package dependency across the installer/CLI/Console boundaries.
 *
 * The marker `__pd_marker: "pd-owned"` in hooks.json only ever came from the
 * legacy global installer. `legacyAsyncPostToolUse` additionally identifies
 * the retired `async: true` PostToolUse shape the Marketplace plugin never
 * writes — the difference that tells the Owner a migration (not just
 * coexistence) is available.
 *
 * rc-1/rc-2/rc-5: hooks.json is untrusted — Object.hasOwn membership checks
 * and type guards only, never `as` on the parsed shape.
 */
export declare const PD_HOOKS_MARKER = "pd-owned";
export declare const CODEX_HOOK_EVENT_NAMES: readonly ['PreToolUse', 'PostToolUse', 'UserPromptSubmit', 'SessionStart'];
export interface LegacyCodexRegistration {
    detected: boolean;
    /** true when a PD-owned PostToolUse group still carries the legacy `async: true` shape. */
    legacyAsyncPostToolUse: boolean;
}
export declare function parseLegacyCodexHooksRegistration(hooksJson: unknown): LegacyCodexRegistration;
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