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/assistantDeepTurnCompositionRuntimeAdapter.ts

@@ -5,6 +5,7 @@ import type { QuestionTypeClass } from "./questionTypeResolver";
 import { resolveQuestionType } from "./questionTypeResolver";
 import { composeAssistantAnswer } from "./answerComposer";
 import type { CompanyAnchorSet } from "./companyAnchorResolver";
+import { isAssistantFollowupApplied, type AssistantFollowupUsage } from "./assistantFollowupUsage";
 
 export interface BuildAssistantDeepTurnCompositionInput {
   userMessage: string;
@@ -13,7 +14,7 @@ export interface BuildAssistantDeepTurnCompositionInput {
   requirements: AssistantRequirement[];
   coverageReport: RequirementCoverageReport;
   groundingCheck: AnswerGroundingCheck;
-  followupUsage: unknown | null | undefined;
+  followupUsage: AssistantFollowupUsage | null | undefined;
   investigationState: InvestigationStateWithProblemUnits | null | undefined;
   companyAnchors: unknown;
   normalizedPayload: NormalizeResponsePayload["normalized"];
@@ -65,7 +66,7 @@ export function buildAssistantDeepTurnComposition(
   const resolveQuestionTypeSafe = input.resolveQuestionTypeFn ?? resolveQuestionType;
   const composeAssistantAnswerSafe = input.composeAssistantAnswerFn ?? composeAssistantAnswer;
 
-  const followupApplied = Boolean((input.followupUsage as { applied?: unknown } | null)?.applied);
+  const followupApplied = isAssistantFollowupApplied(input.followupUsage);
   const focusDomainHint = followupApplied
     ? input.investigationState?.followup_context?.active_domain ?? input.investigationState?.focus.domain ?? null
     : null;