/**
 * 稳定错误码（docs/p0-freeze.md）。
 */
export declare const ERROR_CODES: {
    readonly LEGACY_UNSUPPORTED: "legacy-unsupported";
    readonly HEADER_INVALID: "header-invalid";
    readonly ENTRY_MALFORMED: "entry-malformed";
    readonly ENTRY_OVERSIZED: "entry-oversized";
    readonly PROVENANCE_UNRESOLVED: "provenance-unresolved";
    readonly PARENT_MISSING: "parent-missing";
    readonly PARENT_OUTSIDE_REGISTERED_ROOTS: "parent-outside-registered-roots";
    readonly PARENT_CYCLE: "parent-cycle";
    readonly PROJECTION_UNAVAILABLE: "projection-unavailable";
    readonly SECRET_REJECTED: "secret-rejected";
    readonly QUERY_INVALID: "query-invalid";
    readonly SETUP_REQUIRED: "setup-required";
    readonly SCANNER_FAIL_CLOSED: "scanner-fail-closed";
    readonly PATH_REJECTED: "path-rejected";
    readonly DB_BUSY: "db-busy";
    readonly LEASE_HELD: "lease-held";
    readonly WRITER_ACTIVE: "writer-active";
    readonly FTS_CORRUPT: "fts-corrupt";
    readonly DISK_FULL: "disk-full";
    readonly PERMISSION_DENIED: "permission-denied";
    readonly SIZE_LIMIT_EXCEEDED: "size-limit-exceeded";
    readonly PURGE_RESTART_REQUIRED: "purge-restart-required";
    readonly INDEXING_DISABLED: "indexing-disabled";
    readonly REBUILD_PARTIAL: "rebuild-partial";
};
export type ErrorCode = (typeof ERROR_CODES)[keyof typeof ERROR_CODES];
/**
 * 无正文诊断事件（不得包含 query/text/path）。
 */
export interface DiagnosticEvent {
    code: ErrorCode | string;
    ruleId?: string;
    count?: number;
    sessionHash?: string;
    diagnosticId?: string;
    detail?: string;
}
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