export type CompactLifecycleStage = 'queued' | 'preparing' | 'compacting'
/**
 * REGISTERED but no compaction has started — e.g. claude-code's
 * `ide-native` pathway only installs the PreToolUse hook, which
 * compacts in-band at ratio ≥ 0.95. In the 0.80–0.95 band nothing
 * is in flight, so claiming `compacting` was a false heartbeat.
 */
 | 'armed' | 'verifying' | 'completed' | 'failed';
export interface CompactLifecycleRecord {
    readonly schemaVersion: 1;
    readonly runId: string;
    readonly stage: CompactLifecycleStage;
    readonly updatedAt: string;
    readonly triggerRatio: number;
    readonly afterRatio?: number;
    readonly redLine: boolean;
    readonly failedAt?: Exclude<CompactLifecycleStage, 'failed' | 'completed'>;
    readonly errorSummary?: string;
}
export type CompactLifecycleRead = {
    readonly kind: 'missing';
} | {
    readonly kind: 'valid';
    readonly record: CompactLifecycleRecord;
} | {
    readonly kind: 'invalid';
    readonly reason: string;
} | {
    readonly kind: 'stalled';
    readonly record: CompactLifecycleRecord;
};