ГЛОБАЛЬНЫЙ РЕФАКТОРИНГ АРХИТЕКТУРЫ - Рефакторинг этапов 2.89 - 2.92 и 2.93 - 2.96 - Ужесточение deep-turn финализацию/response контракт debug до строго AssistantDebugPayload / Вынен общий контракт followup-usage и helper / Протянут typed followupUsage по deep-turn цепочке и убрал inline-cast проверки applied

llm_normalizer/backend/src/services/assistantDeepTurnNormalizationRuntimeAdapter.ts

@@ -1,10 +1,11 @@
 import type { AssistantMessageRequestPayload } from "../types/assistant";
 import type { NormalizeRequestPayload, NormalizeResponsePayload } from "../types/normalizer";
+import type { AssistantFollowupUsage } from "./assistantFollowupUsage";
 
 export interface AssistantDeepTurnFollowupBinding {
   normalizedQuestion: string;
   mergedContext: NormalizeRequestPayload["context"] | undefined;
-  usage: unknown | null;
+  usage: AssistantFollowupUsage | null;
 }
 
 export interface BuildAssistantDeepTurnNormalizationRuntimeInput {