/** Read-only preset compatibility audit helpers. */
export interface PresetCompatibility {
    /** True when the preset resolves compaction on the host plane (no isolate realm). */
    readonly inheritsHostCompaction: boolean;
    /** True when the bridge can swap the composition's compaction backend in-realm. */
    readonly patchable: boolean;
    readonly hasLocalBasic: boolean;
    readonly hasLocalArc: boolean;
    readonly isolatesCompaction: boolean;
    readonly issues: readonly string[];
}
/** True only when `compaction: true` occurs inside an `isolate:` mapping. */
export declare function isolatesCompaction(text: string): boolean;
/**
 * Audit one preset composition text against the bridge's takeover guards:
 * the bridge disables the official `compaction-basic` row by name and
 * inserts the engine row into the `compaction` isolate group, so a
 * composition is patchable exactly when it isolates a compaction realm and
 * mounts the official Basic row — or already selects ARC natively.
 */
export declare function inspectPresetComposition(text: string): PresetCompatibility;