fix: 크롤링 완료 시 페이지 status를 pending으로 초기화

SSE crawl_complete 이벤트의 pages에 status 필드가 없어서
검사 중 스피너가 표시되지 않던 문제 수정

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/stores/useSiteInspectionStore.ts

@@ -91,7 +91,13 @@ export const useSiteInspectionStore = create<SiteInspectionState>(
     setCrawlComplete: (data) =>
       set({
         status: "inspecting",
-        discoveredPages: data.pages,
+        discoveredPages: data.pages.map((p) => ({
+          ...p,
+          status: p.status || ("pending" as const),
+          inspection_id: p.inspection_id ?? null,
+          overall_score: p.overall_score ?? null,
+          grade: p.grade ?? null,
+        })),
         crawlProgress: {
           pagesFound: data.total_pages,
           currentUrl: "",