fix(report): youtube_audit null 가드 + clinic overview 게이트 완화

- weeklyViewGrowth/estimatedMonthlyRevenue/avgVideoLength/uploadFrequency/subscriberRank 를 nullable 로 타입 표시, YouTubeAudit 컴포넌트에서 null 접근 가드
- ClinicSnapshot 게이트를 name 필수 → 의미있는 필드 하나라도 있으면 렌더로 완화

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/features/report/components/ReportBody.tsx

@@ -32,6 +32,24 @@ function nonEmpty<T>(arr: T[] | null | undefined): arr is T[] {
   return Array.isArray(arr) && arr.length > 0;
 }
 
+function hasClinicSnapshotData(s: MarketingReport['clinicSnapshot'] | null | undefined): boolean {
+  if (!s) return false;
+  return !!(
+    s.name ||
+    s.nameEn ||
+    s.location ||
+    s.phone ||
+    s.domain ||
+    s.established ||
+    (s.staffCount ?? 0) > 0 ||
+    (s.overallRating ?? 0) > 0 ||
+    (s.totalReviews ?? 0) > 0 ||
+    s.leadDoctor?.name ||
+    nonEmpty(s.certifications) ||
+    s.registryData
+  );
+}
+
 export default function ReportBody({ data }: ReportBodyProps) {
   // 각 audit에서 핸들 끌어와 헤더의 바로가기 버튼에 전달
   const socialHandles = {
@@ -56,7 +74,7 @@ export default function ReportBody({ data }: ReportBodyProps) {
       />
 
       <SectionErrorBoundary>
-        {hasValue(data.clinicSnapshot) && data.clinicSnapshot.name ? (
+        {hasClinicSnapshotData(data.clinicSnapshot) ? (
           <ClinicSnapshot data={data.clinicSnapshot} targetUrl={data.targetUrl} socialHandles={socialHandles} />
         ) : (
           <EmptySection id="clinic-snapshot" title="Clinic Overview" subtitle="병원 기본 정보" />

src/features/report/components/YouTubeAudit.tsx

@@ -33,7 +33,7 @@ export default function YouTubeAudit({ data }: YouTubeAuditProps) {
           label="구독자"
           value={formatNumber(data.subscribers)}
           icon={<Users size={20} />}
-          subtext={data.subscriberRank}
+          subtext={data.subscriberRank ?? undefined}
         />
         <MetricCard
           label="총 영상 수"
@@ -45,13 +45,22 @@ export default function YouTubeAudit({ data }: YouTubeAuditProps) {
           value={formatNumber(data.totalViews)}
           icon={<Eye size={20} />}
         />
+        {data.weeklyViewGrowth ? (
           <MetricCard
             label="주간 성장"
-          value={`+${formatNumber(data.weeklyViewGrowth.absolute)}`}
+            value={`${data.weeklyViewGrowth.absolute >= 0 ? '+' : ''}${formatNumber(data.weeklyViewGrowth.absolute)}`}
             icon={<TrendingUp size={20} />}
             subtext={`${data.weeklyViewGrowth.percentage > 0 ? '+' : ''}${data.weeklyViewGrowth.percentage}%`}
             trend={data.weeklyViewGrowth.percentage > 0 ? 'up' : data.weeklyViewGrowth.percentage < 0 ? 'down' : 'neutral'}
           />
+        ) : (
+          <MetricCard
+            label="주간 성장"
+            value="-"
+            icon={<TrendingUp size={20} />}
+            subtext="데이터 없음"
+          />
+        )}
       </div>
 
       {/* Channel info card */}
@@ -86,8 +95,8 @@ export default function YouTubeAudit({ data }: YouTubeAuditProps) {
         <p className="text-sm text-slate-600 mb-4">{data.channelDescription}</p>
         <div className="flex flex-wrap gap-3 text-sm text-slate-500">
           <span>개설일: {data.channelCreatedDate}</span>
-          <span>평균 영상 길이: {data.avgVideoLength}</span>
-          <span>업로드 빈도: {data.uploadFrequency}</span>
+          <span>평균 영상 길이: {data.avgVideoLength ?? '-'}</span>
+          <span>업로드 빈도: {data.uploadFrequency ?? '-'}</span>
         </div>
 
         {/* Linked URLs */}

src/features/report/types/report.ts

@@ -87,12 +87,12 @@ export interface YouTubeAudit {
   subscribers: number;
   totalVideos: number;
   totalViews: number;
-  weeklyViewGrowth: { absolute: number; percentage: number };
-  estimatedMonthlyRevenue: { min: number; max: number };
-  avgVideoLength: string;
-  uploadFrequency: string;
+  weeklyViewGrowth: { absolute: number; percentage: number } | null;
+  estimatedMonthlyRevenue: { min: number; max: number } | null;
+  avgVideoLength: string | null;
+  uploadFrequency: string | null;
   channelCreatedDate: string;
-  subscriberRank: string;
+  subscriberRank: string | null;
   channelDescription: string;
   linkedUrls: { label: string; url: string }[];
   playlists: string[];