fix(tradein): seed sales-vs-listings → StreetDealsCard рендерится (1:1) (#801)

StreetDealsCard фетчит /sales-vs-listings (не из estimate prop) → без засева
queryKey возвращал null (секция «По вашей улице» отсутствовала). Добавлен
FIXTURE_SALES (SalesVsListingsResponse, street+pairs) + seed
["trade-in","sales-vs-listings",address,area,rooms]. Теперь все 17 секций 1:1
с page.tsx (verified локально: 11 section-kicker'ов вкл. «По вашей улице»).

Refs #801.

tradein-mvp/frontend/src/app/ui-preview/estimate/fixture.ts

@@ -12,6 +12,7 @@ import type {
   HouseInfoForEstimate,
   IMVBenchmarkResponse,
   PlacementHistoryItem,
+  SalesVsListingsResponse,
   SellTimeSensitivityResponse,
   TradeInEstimateInput,
 } from "@/types/trade-in";
@@ -356,3 +357,57 @@ export const FIXTURE_SELLTIME: SellTimeSensitivityResponse = {
     { price_premium_label: "plus10", price_premium_pct: 10, median_exposure_days: 270, p25_days: 150, p75_days: 360, n_lots: 6 },
   ],
 };
+
+// Секция 12: StreetDealsCard — useSalesVsListings(address, area_m2, rooms).
+// Guard: street != null И pairs.length > 0 — иначе return null.
+export const FIXTURE_SALES: SalesVsListingsResponse = {
+  street: "Репина",
+  period_months: 24,
+  window_days: 180,
+  area_tolerance: 0.15,
+  total_deals: 9,
+  deals_with_listings: 5,
+  linkage_rate_pct: 55.6,
+  median_discount_pct: -6.2,
+  data_quality: "house_linked",
+  pairs: [
+    {
+      deal_id: 9001,
+      deal_date: "2026-04-18",
+      deal_price_rub: 8_900_000,
+      deal_price_per_m2: 161_818,
+      deal_area_m2: 55,
+      deal_rooms: 2,
+      deal_floor: 6,
+      deal_address: "Екатеринбург, ул. Репина, 75/2",
+      listing_id: 50001,
+      listing_source: "avito",
+      listing_source_url: "https://www.avito.ru/ekaterinburg/kvartiry/preview-d1",
+      listing_date: "2026-03-20",
+      listing_price_rub: 9_500_000,
+      listing_price_per_m2: 172_727,
+      listing_area_m2: 55,
+      days_listing_to_deal: 29,
+      discount_pct: -6.3,
+    },
+    {
+      deal_id: 9002,
+      deal_date: "2026-02-27",
+      deal_price_rub: 9_100_000,
+      deal_price_per_m2: 159_649,
+      deal_area_m2: 57,
+      deal_rooms: 2,
+      deal_floor: 9,
+      deal_address: "Екатеринбург, ул. Репина, 73",
+      listing_id: 50002,
+      listing_source: "cian",
+      listing_source_url: "https://www.cian.ru/sale/flat/preview-d2",
+      listing_date: "2026-01-30",
+      listing_price_rub: 9_700_000,
+      listing_price_per_m2: 170_175,
+      listing_area_m2: 57,
+      days_listing_to_deal: 28,
+      discount_pct: -6.2,
+    },
+  ],
+};

tradein-mvp/frontend/src/app/ui-preview/estimate/page.tsx

@@ -67,6 +67,7 @@ import {
   FIXTURE_IMV,
   FIXTURE_INPUT,
   FIXTURE_PLACEMENT,
+  FIXTURE_SALES,
   FIXTURE_SELLTIME,
 } from "./fixture";
 
@@ -100,6 +101,17 @@ function PreviewContent() {
     qc.setQueryData(["trade-in", "estimate", PREVIEW_ID, "sell-time-sensitivity"], FIXTURE_SELLTIME);
     // Секция 10: ListingsCard — useEstimateCianPriceChanges (пустой = graceful)
     qc.setQueryData(["trade-in", "estimate", PREVIEW_ID, "cian-price-changes"], []);
+    // Секция 12: StreetDealsCard — useSalesVsListings(address, area_m2, rooms)
+    qc.setQueryData(
+      [
+        "trade-in",
+        "sales-vs-listings",
+        FIXTURE_ESTIMATE.target_address,
+        FIXTURE_ESTIMATE.area_m2,
+        FIXTURE_ESTIMATE.rooms,
+      ],
+      FIXTURE_SALES,
+    );
     return qc;
   });