/**
 * settings bridge — T20-b port from dsh-perm-gate (5260fe6 generalized form).
 *
 * The plugin is a pure client takeover on every host line, but its durable
 * data plane (the `ui-conversation` busy-Enter pin) rides the client settings
 * handles that are generation-exclusive: `configForms` (0.1.7+) works,
 * `settingsScope` (≤0.1.5) resolves to nothing (the A2 dead end), so on old
 * lines both the family card and the pin itself silently no-op. This bridge
 * gives the browser half a same-origin HTTP data plane backed by the HOST's
 * settings service — reads = svc.describe of our ns, writes = svc.mutate ops.
 * No second copy of state: the service stays the single source of truth.
 * Guards: POST-only, ns fixed at registration, optimistic concurrency via
 * expectedRevision. The 0.1.0 host settings service carries the full
 * describe/mutate/redactSecrets surface (lib/index.js verified), so the
 * oldest line needs no fallback path.
 *
 * Data consumer = client BridgeDocHandle (src/client/bridge-scope.ts) — the
 * T13b dual-track: native handle first (0.1.7+), this bridge underneath.
 * Routes derive from the ns (bridgeRoutesFor) so the URL contract cannot
 * drift between the two halves; the parity test pins both derivations
 * character-for-character.
 */
interface SettingsServiceLike {
    update?(ns: string, patch: object): Promise<void>;
    describe?(o?: {
        redactSecrets?: boolean;
    }): Array<{
        ns: unknown;
        [k: string]: unknown;
    }>;
    mutate?(ns: string, ops: Array<{
        op: string;
        path: string[];
        value?: unknown;
    }>, expectedRevision?: number): Promise<unknown>;
    writable?: boolean;
}
/** Route pair for one settings ns — client and server must derive identically. */
export declare function bridgeRoutesFor(ns: string): {
    describe: string;
    mutate: string;
};
export declare function registerSettingsBridgeRoutes(server: unknown, getSettingsSvc: () => SettingsServiceLike | undefined, ns: string): Array<() => void>;
export {};
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