fix: 진행 페이지 리로드 시 무한 로딩 + 동시 검사 수 상한 수정

- 리로드 시 API에서 현재 상태를 조회하여 스토어 복원 (initFromApi)
- SITE_CONCURRENCY 서버 상한 4→8로 변경 (사용자 설정 8이 제대로 동작)

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

frontend/src/components/site-inspection/SiteCrawlProgress.tsx

@@ -1,7 +1,9 @@
 "use client";
 
+import { useEffect } from "react";
 import { useSiteInspectionStore } from "@/stores/useSiteInspectionStore";
 import { useSiteInspectionSSE } from "@/hooks/useSiteInspectionSSE";
+import { useSiteInspectionResult } from "@/lib/queries";
 import { Progress } from "@/components/ui/progress";
 import { Card, CardContent } from "@/components/ui/card";
 import { ErrorState } from "@/components/common/ErrorState";
@@ -36,8 +38,18 @@ export function SiteCrawlProgress({
     discoveredPages,
     aggregateScores,
     errorMessage,
+    initFromApi,
   } = useSiteInspectionStore();
 
+  // API에서 현재 상태 조회 (리로드 시 스토어 복원용)
+  const { data: apiResult } = useSiteInspectionResult(siteInspectionId);
+
+  useEffect(() => {
+    if (apiResult && status === "idle") {
+      initFromApi(apiResult);
+    }
+  }, [apiResult, status, initFromApi]);
+
   // SSE 연결
   useSiteInspectionSSE(siteInspectionId);
 

frontend/src/stores/useSiteInspectionStore.ts

@@ -3,6 +3,7 @@ import type {
   DiscoveredPage,
   AggregateScores,
   SiteInspectionPhase,
+  SiteInspectionResult,
   CrawlProgress,
   SSECrawlComplete,
   SSEPageComplete,
@@ -21,6 +22,7 @@ interface SiteInspectionState {
 
   // Actions
   setSiteInspection: (id: string, rootUrl: string) => void;
+  initFromApi: (data: SiteInspectionResult) => void;
   setCrawlProgress: (pagesFound: number, currentUrl: string) => void;
   setCrawlComplete: (data: SSECrawlComplete) => void;
   updatePageStatus: (
@@ -63,6 +65,23 @@ export const useSiteInspectionStore = create<SiteInspectionState>(
         status: "crawling",
       }),
 
+    initFromApi: (data) =>
+      set((state) => {
+        // Only init if store is idle (prevents overwriting live SSE data)
+        if (state.status !== "idle") return state;
+        return {
+          siteInspectionId: data.site_inspection_id,
+          rootUrl: data.root_url,
+          status: data.status as SiteInspectionPhase,
+          discoveredPages: data.discovered_pages,
+          aggregateScores: data.aggregate_scores,
+          crawlProgress: {
+            pagesFound: data.discovered_pages.length,
+            currentUrl: "",
+          },
+        };
+      }),
+
     setCrawlProgress: (pagesFound, currentUrl) =>
       set({
         status: "crawling",