fix(sf-11): review-pass — DOM.РФ latin URL + Fragment key + a11y keyboard

Per review #285 (HIGH BLOCK):
- DOM.РФ URL: кириллический slug → latin path
  (/services/catalog-newbuildings/object/{id}) для stable behavior
- Replace <> Fragment без key → <Fragment key={signature}>
  (убирает React warning при .map). Closing </> → </Fragment>
- a11y: <tr onClick> теперь имеет tabIndex, role="button",
  aria-expanded, onKeyDown (Enter/Space) — keyboard drill-in

Inline hex tokens (medium) — отложено в follow-up (epic #271 #19).

frontend/package-lock.json

@@ -32,7 +32,7 @@
         "openapi-typescript": "^7.0.0",
         "postcss": "^8.4.0",
         "tailwindcss": "^4.0.0",
-        "typescript": "^5.5.0"
+        "typescript": "5.9.3"
       }
     },
     "node_modules/@alloc/quick-lru": {

frontend/package.json

@@ -35,6 +35,6 @@
     "openapi-typescript": "^7.0.0",
     "postcss": "^8.4.0",
     "tailwindcss": "^4.0.0",
-    "typescript": "^5.5.0"
+    "typescript": "5.9.3"
   }
 }

frontend/src/components/site-finder/BestLayoutsBlock.tsx

@@ -1,6 +1,6 @@
 "use client";
 
-import { useState } from "react";
+import { Fragment, useState } from "react";
 import { useBestLayouts } from "@/hooks/useBestLayouts";
 import { API_BASE_URL } from "@/lib/api";
 import type {
@@ -109,7 +109,7 @@ function CompetitorDrillIn({
           {visible.map((id) => (
             <a
               key={id}
-              href={`https://наш.дом.рф/сервисы/каталог-новостроек/объект/${id}`}
+              href={`https://наш.дом.рф/services/catalog-newbuildings/object/${id}`}
               target="_blank"
               rel="noopener noreferrer"
               className="bg-blue-100 text-blue-700 rounded px-2 py-0.5 font-mono hover:bg-blue-200 transition-colors"
@@ -207,12 +207,23 @@ function TopLayoutsTable({ rows }: { rows: TopLayoutRow[] }) {
               const hasCompetitors = row.competitor_obj_ids.length > 0;
 
               return (
-                <>
+                <Fragment key={row.signature}>
                   <tr
-                    key={row.signature}
                     onClick={() => {
                       if (hasCompetitors) toggleRow(row.signature);
                     }}
+                    onKeyDown={(e) => {
+                      if (
+                        hasCompetitors &&
+                        (e.key === "Enter" || e.key === " ")
+                      ) {
+                        e.preventDefault();
+                        toggleRow(row.signature);
+                      }
+                    }}
+                    tabIndex={hasCompetitors ? 0 : undefined}
+                    role={hasCompetitors ? "button" : undefined}
+                    aria-expanded={hasCompetitors ? isExpanded : undefined}
                     style={{
                       background: i % 2 === 0 ? "#fff" : "#fafbfc",
                       borderBottom: isExpanded ? "none" : "1px solid #f3f4f6",
@@ -352,12 +363,11 @@ function TopLayoutsTable({ rows }: { rows: TopLayoutRow[] }) {
                   </tr>
                   {isExpanded && hasCompetitors && (
                     <CompetitorDrillIn
-                      key={`${row.signature}-drill`}
                       ids={row.competitor_obj_ids}
                       colSpan={TOTAL_COLS}
                     />
                   )}
-                </>
+                </Fragment>
               );
             })}
           </tbody>