feat: 3-mode inspection with tabbed UI + batch upload

- Add batch inspection backend (multipart upload, SSE streaming, MongoDB)
- Add tabbed UI (single page / site crawling / batch upload) on home and history pages
- Add batch inspection progress, result pages with 2-panel layout
- Rename "사이트 전체" to "사이트 크롤링" across codebase
- Add python-multipart dependency for file upload
- Consolidate nginx SSE location for all inspection types

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

frontend/src/components/inspection/RecentSiteInspections.tsx

@@ -0,0 +1,95 @@
+"use client";
+
+import Link from "next/link";
+import { Card, CardContent } from "@/components/ui/card";
+import { ScoreBadge } from "@/components/common/ScoreBadge";
+import { LoadingSpinner } from "@/components/common/LoadingSpinner";
+import { EmptyState } from "@/components/common/EmptyState";
+import { useRecentSiteInspections } from "@/lib/queries";
+import { formatDate, getScoreTailwindColor } from "@/lib/constants";
+import { Globe } from "lucide-react";
+import type { Grade } from "@/types/inspection";
+import { cn } from "@/lib/utils";
+
+/** 최근 사이트 크롤링 이력 (메인 페이지용) */
+export function RecentSiteInspections() {
+  const { data, isLoading, isError } = useRecentSiteInspections();
+
+  if (isLoading) {
+    return <LoadingSpinner message="최근 사이트 크롤링 이력을 불러오는 중..." />;
+  }
+
+  if (isError || !data) {
+    return null;
+  }
+
+  if (data.items.length === 0) {
+    return (
+      <EmptyState
+        message="사이트 크롤링 이력이 없습니다"
+        description="사이트 URL을 입력하여 첫 번째 크롤링을 시작해보세요"
+      />
+    );
+  }
+
+  return (
+    <div className="w-full max-w-2xl mx-auto mt-8">
+      <h2 className="text-lg font-semibold mb-4">최근 사이트 크롤링 이력</h2>
+      <div className="space-y-3">
+        {data.items.map((item) => (
+          <Link
+            key={item.site_inspection_id}
+            href={`/site-inspections/${item.site_inspection_id}`}
+          >
+            <Card className="hover:shadow-md transition-shadow cursor-pointer">
+              <CardContent className="flex items-center justify-between py-4 px-5">
+                <div className="flex-1 min-w-0">
+                  <div className="flex items-center gap-2">
+                    <Globe className="h-4 w-4 text-muted-foreground shrink-0" />
+                    <span className="text-sm font-medium truncate">
+                      {item.domain || item.root_url}
+                    </span>
+                  </div>
+                  <div className="flex items-center gap-2 mt-1">
+                    <p className="text-xs text-muted-foreground">
+                      {formatDate(item.created_at)}
+                    </p>
+                    <span className="text-xs text-muted-foreground">
+                      {item.pages_total}페이지
+                    </span>
+                  </div>
+                </div>
+                <div className="flex items-center gap-3 ml-4">
+                  {item.overall_score !== null && (
+                    <>
+                      <span
+                        className={cn(
+                          "text-lg font-bold",
+                          getScoreTailwindColor(item.overall_score)
+                        )}
+                      >
+                        {item.overall_score}점
+                      </span>
+                      {item.grade && <ScoreBadge grade={item.grade as Grade} />}
+                    </>
+                  )}
+                  {item.overall_score === null && (
+                    <span className="text-sm text-muted-foreground">
+                      {item.status === "crawling"
+                        ? "크롤링 중"
+                        : item.status === "inspecting"
+                          ? "검사 중"
+                          : item.status === "error"
+                            ? "오류"
+                            : "대기 중"}
+                    </span>
+                  )}
+                </div>
+              </CardContent>
+            </Card>
+          </Link>
+        ))}
+      </div>
+    </div>
+  );
+}