Нормализовать НДС follow-up за месяц в налоговый квартал

llm_normalizer/backend/src/services/addressQueryService.ts

@@ -355,6 +355,23 @@ function deriveTaxQuarterWindowForDate(value: unknown): { period_from: string; p
   };
 }
 
+function isFullCalendarMonthWindow(periodFrom: unknown, periodTo: unknown): boolean {
+  const fromIso = normalizeIsoDateForQuery(periodFrom);
+  const toIso = normalizeIsoDateForQuery(periodTo);
+  if (!fromIso || !toIso) {
+    return false;
+  }
+  const fromMatch = fromIso.match(/^(\d{4})-(\d{2})-(\d{2})$/);
+  const toMatch = toIso.match(/^(\d{4})-(\d{2})-(\d{2})$/);
+  if (!fromMatch || !toMatch || fromMatch[1] !== toMatch[1] || fromMatch[2] !== toMatch[2] || fromMatch[3] !== "01") {
+    return false;
+  }
+  const year = Number(fromMatch[1]);
+  const month = Number(fromMatch[2]);
+  const lastDay = new Date(Date.UTC(year, month, 0)).getUTCDate();
+  return toMatch[3] === String(lastDay).padStart(2, "0");
+}
+
 function deriveMonthWindowForDate(value: unknown): { period_from: string; period_to: string } | null {
   const isoDate = normalizeIsoDateForQuery(value);
   if (!isoDate) {
@@ -3716,9 +3733,14 @@ export class AddressQueryService {
         })
       });
     }
+    const vatTaxPeriodFromCarriedMonth =
+      intent.intent === "vat_liability_confirmed_for_tax_period" &&
+      (filters.warnings.includes("period_from_from_followup_context") ||
+        filters.warnings.includes("period_to_from_followup_context")) &&
+      isFullCalendarMonthWindow(filters.extracted_filters.period_from, filters.extracted_filters.period_to);
     if (
       intent.intent === "vat_liability_confirmed_for_tax_period" &&
-      filters.warnings.includes("period_derived_from_month_phrase")
+      (filters.warnings.includes("period_derived_from_month_phrase") || vatTaxPeriodFromCarriedMonth)
     ) {
       const taxQuarterWindow = deriveTaxQuarterWindowForDate(filters.extracted_filters.period_to);
       if (taxQuarterWindow) {