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/assistantDeepTurnContextRuntimeAdapter.ts

@@ -1,6 +1,7 @@
 import type { NormalizeResponsePayload, RouteHintSummary } from "../types/normalizer";
 import type { ClaimBoundAnchorAudit } from "./assistantClaimBoundEvidence";
 import type { AssistantLiveTemporalHint } from "./assistantDeepTurnRetrievalRuntimeAdapter";
+import { isAssistantFollowupApplied, type AssistantFollowupUsage } from "./assistantFollowupUsage";
 import type { DomainPolarityGuardAudit, TemporalGuardAudit } from "./assistantRuntimeGuards";
 
 const KNOWN_P0_DOMAINS = new Set([
@@ -35,7 +36,7 @@ export interface BuildAssistantDeepTurnRuntimeContextInput {
     period_to: string | null;
     source: string | null;
   };
-  followupUsage: unknown | null | undefined;
+  followupUsage: AssistantFollowupUsage | null | undefined;
   resolveCompanyAnchors: (userMessage: string) => unknown;
   resolveBusinessScopeAlignment: (input: {
     userMessage: string;
@@ -138,7 +139,7 @@ export function buildAssistantDeepTurnRuntimeContext(
     focusDomainHint: focusDomainForGuards,
     userMessage: input.userMessage,
     companyAnchors,
-    followupApplied: Boolean((input.followupUsage as { applied?: unknown } | null)?.applied)
+    followupApplied: isAssistantFollowupApplied(input.followupUsage)
   });
   const resolvedRouteSummary = businessScopeResolution.route_summary_resolved;
   const liveTemporalHint = toAnalysisContext(input.runtimeAnalysisContext);