Архитектура: централизовать party-anchor carryover и referenced-entity follow-up в continuity policy и transition glue

llm_normalizer/backend/tests/assistantContinuityPolicy.test.ts

@@ -1,6 +1,8 @@
 import { describe, expect, it } from "vitest";
 import {
+  applyHistoricalPartyCarryoverFilters,
   applyOrganizationCarryoverFilters,
+  applyReferencedEntityCarryover,
   applyTemporalCarryoverFilters,
   buildRootScopedCarryoverFilters,
   hydrateInventoryRootFrameState,
@@ -281,4 +283,45 @@ describe("assistantContinuityPolicy organization authority", () => {
       organization: "Org Existing"
     });
   });
+
+  it("backfills historical contract and counterparty only for party-driven follow-up families", () => {
+    const filters = applyHistoricalPartyCarryoverFilters(
+      {},
+      true,
+      "Contract Legacy",
+      "Counterparty Legacy"
+    );
+
+    expect(filters).toEqual({
+      contract: "Contract Legacy",
+      counterparty: "Counterparty Legacy"
+    });
+  });
+
+  it("applies referenced entity carryover into filters, anchor, and selection mode", () => {
+    const carryover = applyReferencedEntityCarryover(
+      {
+        organization: "Org Alt"
+      },
+      null,
+      null,
+      "carry_previous_intent",
+      {
+        entityType: "counterparty",
+        value: "SVK Group"
+      },
+      false
+    );
+
+    expect(carryover).toEqual({
+      previousFilters: {
+        organization: "Org Alt",
+        counterparty: "SVK Group"
+      },
+      previousAnchorType: "counterparty",
+      previousAnchorValue: "SVK Group",
+      followupSelectionMode: "carry_referenced_entity",
+      resolvedCounterpartyFromDisplay: true
+    });
+  });
 });

llm_normalizer/backend/tests/assistantTransitionPolicy.test.ts

@@ -214,6 +214,47 @@ describe("assistantTransitionPolicy", () => {
     expect(contract.decision).toBe("continue_previous");
   });
 
+  it("retargets displayed counterparty follow-up through shared referenced-entity carryover", () => {
+    const policy = buildPolicy({
+      findLastAddressAssistantItem: () => ({
+        text: "1. SVK Group\n2. Gamma",
+        debug: {
+          detected_intent: "customer_revenue_and_payments",
+          extracted_filters: {
+            organization: 'ООО "Альтернатива Плюс"',
+            period_from: "2017-01-01",
+            period_to: "2017-12-31"
+          }
+        }
+      }),
+      hasAddressFollowupContextSignal: () => true,
+      inferDisplayedEntityTypeFromIntent: () => "counterparty",
+      extractDisplayedAddressEntityCandidates: () => [{ entityType: "counterparty", value: "SVK Group" }],
+      resolveDisplayedAddressEntityMention: () => ({ entityType: "counterparty", value: "SVK Group" }),
+      resolveAddressIntent: () => ({ intent: "unknown" })
+    });
+
+    const carryover = policy.resolveAddressFollowupCarryoverContext(
+      "покажи договоры по СВК",
+      [],
+      null,
+      null,
+      null
+    );
+
+    expect(carryover?.followupSelectionMode).toBe("carry_referenced_entity");
+    expect(carryover?.followupContext?.target_intent).toBe("list_contracts_by_counterparty");
+    expect(carryover?.followupContext?.previous_anchor_type).toBe("counterparty");
+    expect(carryover?.followupContext?.previous_anchor_value).toBe("SVK Group");
+    expect(carryover?.followupContext?.previous_filters).toMatchObject({
+      organization: 'ООО "Альтернатива Плюс"',
+      counterparty: "SVK Group",
+      period_from: "2017-01-01",
+      period_to: "2017-12-31"
+    });
+    expect(carryover?.followupContext?.resolved_counterparty_from_display).toBe(true);
+  });
+
   it("retargets same-date inventory follow-up away from receivables intent", () => {
     const policy = buildPolicy({
       findLastAddressAssistantItem: () => ({