fix: prediction API 프록시 경로 수정 + nginx 라우팅 추가

vite dev: /api/prediction/ → 192.168.1.18:8001 (rewrite /api/prediction → /api)
nginx 프로덕션: /api/prediction/ → redis-211:8001 (동일 rewrite)
디버그 로그: fetchCorrelationTracks URL/status, loadHistory fetch 결과

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/components/korea/FleetClusterLayer.tsx

@@ -83,6 +83,17 @@ export function FleetClusterLayer({ ships, analysisMap: analysisMapProp, onShipS
     const filled = fillGapFrames(sorted);
     const corrData = corrRes.items;
     const corrTracks = trackRes.vessels;
+
+    // 디버그: fetch 결과 확인
+    const withTrack = corrTracks.filter(v => v.track && v.track.length > 0).length;
+    console.log('[loadHistory] fetch 완료:', {
+      history: history.length,
+      corrData: corrData.length,
+      corrTracks: corrTracks.length,
+      withTrack,
+      sampleTrack: corrTracks[0] ? { mmsi: corrTracks[0].mmsi, trackPts: corrTracks[0].track?.length, score: corrTracks[0].score } : 'none',
+    });
+
     const vessels = new Set(corrTracks.filter(v => v.score >= 0.7).map(v => v.mmsi));
 
     // 3. React 상태 동기화 (패널 표시용)

frontend/src/services/vesselAnalysis.ts

@@ -160,11 +160,17 @@ export async function fetchCorrelationTracks(
   hours = 24,
   minScore = 0.3,
 ): Promise<CorrelationTracksResponse> {
-  const res = await fetch(
-    `/api/prediction/v1/correlation/${encodeURIComponent(groupKey)}/tracks?hours=${hours}&minScore=${minScore}`,
-  );
-  if (!res.ok) return { groupKey, vessels: [] };
-  return res.json();
+  const url = `/api/prediction/v1/correlation/${encodeURIComponent(groupKey)}/tracks?hours=${hours}&minScore=${minScore}`;
+  console.log('[fetchCorrelationTracks] URL:', url);
+  const res = await fetch(url);
+  console.log('[fetchCorrelationTracks] status:', res.status, res.statusText);
+  if (!res.ok) {
+    console.warn('[fetchCorrelationTracks] 실패:', res.status);
+    return { groupKey, vessels: [] };
+  }
+  const data: CorrelationTracksResponse = await res.json();
+  console.log('[fetchCorrelationTracks] 응답:', data.vessels.length, '건');
+  return data;
 }
 
 /* ── Fleet Companies ─────────────────────────────────────────── */

frontend/vite.config.ts

@@ -115,8 +115,8 @@ export default defineConfig(({ mode }): UserConfig => ({
         changeOrigin: true,
         secure: true,
       },
-      '/api/prediction': {
-        target: 'http://localhost:8001',
+      '/api/prediction/': {
+        target: 'http://192.168.1.18:8001',
         changeOrigin: true,
         rewrite: (path) => path.replace(/^\/api\/prediction/, '/api'),
       },