feat: 불법어선 필터 시 수역 폴리곤 오버레이 + 선박 마커 가시성 개선

- WGS84 사전 변환 GeoJSON 생성 (런타임 변환 제거)
- FishingZoneLayer: 수역별 색상 fill/line + 이름 라벨
- AnalysisOverlay: 마커 크기 확대, 한글 라벨, 선박명 표시
- fishingAnalysis.ts: EPSG:3857 변환 로직 제거, WGS84 JSON 직접 사용

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

frontend/src/components/korea/AnalysisOverlay.tsx

@@ -9,6 +9,19 @@ const RISK_COLORS: Record<string, string> = {
   LOW: '#22c55e',
 };
 
+const RISK_LABEL: Record<string, string> = {
+  CRITICAL: '긴급',
+  HIGH: '경고',
+  MEDIUM: '주의',
+  LOW: '정상',
+};
+
+const RISK_MARKER_SIZE: Record<string, number> = {
+  CRITICAL: 18,
+  HIGH: 14,
+  MEDIUM: 12,
+};
+
 const RISK_PRIORITY: Record<string, number> = {
   CRITICAL: 0,
   HIGH: 1,
@@ -31,9 +44,10 @@ interface AnalyzedShip {
 /** 위험도 펄스 애니메이션 인라인 스타일 */
 function riskPulseStyle(riskLevel: string): React.CSSProperties {
   const color = RISK_COLORS[riskLevel] ?? RISK_COLORS['LOW'];
+  const size = RISK_MARKER_SIZE[riskLevel] ?? 10;
   return {
-    width: 10,
+    width: size,
-    height: 10,
+    height: size,
     borderRadius: '50%',
     backgroundColor: color,
     boxShadow: `0 0 6px 2px ${color}88`,
@@ -171,21 +185,38 @@ export function AnalysisOverlay({ ships, analysisMap, clusters, activeFilter }:
       {riskMarkers.map(({ ship, dto }) => {
         const level = dto.algorithms.riskScore.level;
         const color = RISK_COLORS[level] ?? RISK_COLORS['LOW'];
+        const size = RISK_MARKER_SIZE[level] ?? 12;
+        const halfBase = Math.round(size * 0.5);
+        const triHeight = Math.round(size * 0.9);
         return (
           <Marker key={`risk-${ship.mmsi}`} longitude={ship.lng} latitude={ship.lat} anchor="center">
             <div style={{ display: 'flex', flexDirection: 'column', alignItems: 'center', pointerEvents: 'none' }}>
+              {/* 선박명 */}
+              {ship.name && (
+                <div style={{
+                  fontSize: 9,
+                  fontWeight: 700,
+                  color: '#fff',
+                  textShadow: '0 0 2px #000, 0 0 2px #000',
+                  textAlign: 'center',
+                  whiteSpace: 'nowrap',
+                  marginBottom: 2,
+                }}>
+                  {ship.name}
+                </div>
+              )}
               {/* 삼각형 아이콘 */}
               <div style={{
                 width: 0,
                 height: 0,
-                borderLeft: '5px solid transparent',
+                borderLeft: `${halfBase}px solid transparent`,
-                borderRight: '5px solid transparent',
+                borderRight: `${halfBase}px solid transparent`,
-                borderBottom: `9px solid ${color}`,
+                borderBottom: `${triHeight}px solid ${color}`,
                 filter: `drop-shadow(0 0 3px ${color}88)`,
               }} />
-              {/* 위험도 텍스트 */}
+              {/* 위험도 텍스트 (한글) */}
               <div style={{
-                fontSize: 5,
+                fontSize: 8,
                 fontWeight: 700,
                 color,
                 textShadow: '0 0 2px #000, 0 0 2px #000',
@@ -193,7 +224,7 @@ export function AnalysisOverlay({ ships, analysisMap, clusters, activeFilter }:
                 whiteSpace: 'nowrap',
                 marginTop: 1,
               }}>
-                {level}
+                {RISK_LABEL[level] ?? level}
               </div>
             </div>
           </Marker>
@@ -215,6 +246,20 @@ export function AnalysisOverlay({ ships, analysisMap, clusters, activeFilter }:
         return (
           <Marker key={`dark-${ship.mmsi}`} longitude={ship.lng} latitude={ship.lat} anchor="center">
             <div style={{ display: 'flex', flexDirection: 'column', alignItems: 'center', pointerEvents: 'none' }}>
+              {/* 선박명 */}
+              {ship.name && (
+                <div style={{
+                  fontSize: 9,
+                  fontWeight: 700,
+                  color: '#fff',
+                  textShadow: '0 0 2px #000, 0 0 2px #000',
+                  textAlign: 'center',
+                  whiteSpace: 'nowrap',
+                  marginBottom: 2,
+                }}>
+                  {ship.name}
+                </div>
+              )}
               {/* 보라 점선 원 */}
               <div style={{
                 width: 16,
@@ -223,9 +268,9 @@ export function AnalysisOverlay({ ships, analysisMap, clusters, activeFilter }:
                 border: '2px dashed #a855f7',
                 boxShadow: '0 0 4px #a855f788',
               }} />
-              {/* gap 라벨 */}
+              {/* gap 라벨: "AIS 소실 N분" */}
               <div style={{
-                fontSize: 5,
+                fontSize: 8,
                 fontWeight: 700,
                 color: '#a855f7',
                 textShadow: '0 0 2px #000, 0 0 2px #000',
@@ -233,7 +278,7 @@ export function AnalysisOverlay({ ships, analysisMap, clusters, activeFilter }:
                 whiteSpace: 'nowrap',
                 marginTop: 1,
               }}>
-                {gapMin > 0 ? `${Math.round(gapMin)}분` : 'DARK'}
+                {gapMin > 0 ? `AIS 소실 ${Math.round(gapMin)}분` : 'DARK'}
               </div>
             </div>
           </Marker>
@@ -241,24 +286,43 @@ export function AnalysisOverlay({ ships, analysisMap, clusters, activeFilter }:
       })}
 
       {/* GPS 스푸핑 배지 */}
-      {spoofingMarkers.map(({ ship }) => (
+      {spoofingMarkers.map(({ ship, dto }) => {
-        <Marker key={`spoof-${ship.mmsi}`} longitude={ship.lng} latitude={ship.lat} anchor="bottom">
+        const pct = Math.round(dto.algorithms.gpsSpoofing.spoofingScore * 100);
-          <div style={{
+        return (
-            marginBottom: 14,
+          <Marker key={`spoof-${ship.mmsi}`} longitude={ship.lng} latitude={ship.lat} anchor="bottom">
-            fontSize: 6,
+            <div style={{ display: 'flex', flexDirection: 'column', alignItems: 'center', pointerEvents: 'none' }}>
-            fontWeight: 700,
+              {/* 선박명 */}
-            color: '#fff',
+              {ship.name && (
-            backgroundColor: '#ef4444',
+                <div style={{
-            borderRadius: 2,
+                  fontSize: 9,
-            padding: '0 2px',
+                  fontWeight: 700,
-            textShadow: 'none',
+                  color: '#fff',
-            whiteSpace: 'nowrap',
+                  textShadow: '0 0 2px #000, 0 0 2px #000',
-            pointerEvents: 'none',
+                  textAlign: 'center',
-          }}>
+                  whiteSpace: 'nowrap',
-            GPS
+                  marginBottom: 2,
-          </div>
+                }}>
-        </Marker>
+                  {ship.name}
-      ))}
+                </div>
+              )}
+              {/* 스푸핑 배지 */}
+              <div style={{
+                marginBottom: 14,
+                fontSize: 8,
+                fontWeight: 700,
+                color: '#fff',
+                backgroundColor: '#ef4444',
+                borderRadius: 2,
+                padding: '0 3px',
+                textShadow: 'none',
+                whiteSpace: 'nowrap',
+              }}>
+                {`GPS ${pct}%`}
+              </div>
+            </div>
+          </Marker>
+        );
+      })}
 
       {/* 선단 leader 별 아이콘 */}
       {leaderShips.map(({ ship }) => (

frontend/src/components/korea/FishingZoneLayer.tsx

@@ -0,0 +1,93 @@
+import { useMemo } from 'react';
+import { Source, Layer, Marker } from 'react-map-gl/maplibre';
+import fishingZonesData from '../../data/zones/fishing-zones-wgs84.json';
+
+const ZONE_FILL: Record<string, string> = {
+  ZONE_I: 'rgba(59, 130, 246, 0.15)',
+  ZONE_II: 'rgba(16, 185, 129, 0.15)',
+  ZONE_III: 'rgba(245, 158, 11, 0.15)',
+  ZONE_IV: 'rgba(239, 68, 68, 0.15)',
+};
+
+const ZONE_LINE: Record<string, string> = {
+  ZONE_I: 'rgba(59, 130, 246, 0.6)',
+  ZONE_II: 'rgba(16, 185, 129, 0.6)',
+  ZONE_III: 'rgba(245, 158, 11, 0.6)',
+  ZONE_IV: 'rgba(239, 68, 68, 0.6)',
+};
+
+/** 폴리곤 중심점 (좌표 평균) */
+function centroid(coordinates: number[][][][]): [number, number] {
+  let sLng = 0, sLat = 0, n = 0;
+  for (const poly of coordinates) {
+    for (const ring of poly) {
+      for (const [lng, lat] of ring) {
+        sLng += lng; sLat += lat; n++;
+      }
+    }
+  }
+  return n > 0 ? [sLng / n, sLat / n] : [0, 0];
+}
+
+const fillColor = [
+  'match', ['get', 'id'],
+  'ZONE_I', ZONE_FILL.ZONE_I,
+  'ZONE_II', ZONE_FILL.ZONE_II,
+  'ZONE_III', ZONE_FILL.ZONE_III,
+  'ZONE_IV', ZONE_FILL.ZONE_IV,
+  'rgba(0,0,0,0)',
+] as maplibregl.ExpressionSpecification;
+
+const lineColor = [
+  'match', ['get', 'id'],
+  'ZONE_I', ZONE_LINE.ZONE_I,
+  'ZONE_II', ZONE_LINE.ZONE_II,
+  'ZONE_III', ZONE_LINE.ZONE_III,
+  'ZONE_IV', ZONE_LINE.ZONE_IV,
+  'rgba(0,0,0,0)',
+] as maplibregl.ExpressionSpecification;
+
+export function FishingZoneLayer() {
+  const labels = useMemo(() =>
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    fishingZonesData.features.map((f: any) => {
+      const [lng, lat] = centroid(f.geometry.coordinates);
+      return { id: f.properties.id as string, name: f.properties.name as string, lng, lat };
+    }), []);
+
+  return (
+    <>
+      <Source id="fishing-zones" type="geojson" data={fishingZonesData as GeoJSON.FeatureCollection}>
+        <Layer
+          id="fishing-zone-fill"
+          type="fill"
+          paint={{ 'fill-color': fillColor, 'fill-opacity': 1 }}
+        />
+        <Layer
+          id="fishing-zone-line"
+          type="line"
+          paint={{
+            'line-color': lineColor,
+            'line-opacity': 1,
+            'line-width': 1.5,
+            'line-dasharray': [4, 2],
+          }}
+        />
+      </Source>
+
+      {labels.map(({ id, name, lng, lat }) => (
+        <Marker key={`zone-${id}`} longitude={lng} latitude={lat} anchor="center">
+          <div style={{
+            fontSize: 10, fontWeight: 700, color: '#fff',
+            textShadow: '0 0 3px #000, 0 0 3px #000',
+            backgroundColor: 'rgba(0,0,0,0.45)',
+            borderRadius: 3, padding: '1px 5px',
+            whiteSpace: 'nowrap', pointerEvents: 'none',
+          }}>
+            {name}
+          </div>
+        </Marker>
+      ))}
+    </>
+  );
+}

frontend/src/components/korea/KoreaMap.tsx

@@ -22,6 +22,7 @@ import { NKLaunchLayer } from './NKLaunchLayer';
 import { NKMissileEventLayer } from './NKMissileEventLayer';
 import { ChineseFishingOverlay } from './ChineseFishingOverlay';
 import { AnalysisOverlay } from './AnalysisOverlay';
+import { FishingZoneLayer } from './FishingZoneLayer';
 import { AnalysisStatsPanel } from './AnalysisStatsPanel';
 import { fetchKoreaInfra } from '../../services/infra';
 import type { PowerFacility } from '../../services/infra';
@@ -272,6 +273,7 @@ export function KoreaMap({ ships, aircraft, satellites, layers, osintFeed, curre
       {layers.govBuildings && <GovBuildingLayer />}
       {layers.nkLaunch && <NKLaunchLayer />}
       {layers.nkMissile && <NKMissileEventLayer ships={ships} />}
+      {koreaFilters.illegalFishing && <FishingZoneLayer />}
       {layers.cnFishing && <ChineseFishingOverlay ships={ships} analysisMap={vesselAnalysis?.analysisMap} />}
       {vesselAnalysis && vesselAnalysis.analysisMap.size > 0 && (
         <AnalysisOverlay

frontend/src/utils/fishingAnalysis.ts

@@ -3,13 +3,10 @@
 
 import type { Ship } from '../types';
 import booleanPointInPolygon from '@turf/boolean-point-in-polygon';
-import { point, multiPolygon } from '@turf/helpers';
+import { point } from '@turf/helpers';
 import type { Feature, MultiPolygon } from 'geojson';
 
-import zone1Data from '../data/zones/특정어업수역Ⅰ.json';
+import fishingZonesWgs84 from '../data/zones/fishing-zones-wgs84.json';
-import zone2Data from '../data/zones/특정어업수역Ⅱ.json';
-import zone3Data from '../data/zones/특정어업수역Ⅲ.json';
-import zone4Data from '../data/zones/특정어업수역Ⅳ.json';
 
 /**
  * 중국 허가 업종 코드 (허가번호 접두사)
@@ -50,28 +47,6 @@ const GEAR_META: Record<FishingGearType, {
 
 export { GEAR_META as GEAR_LABELS };
 
-/**
- * EPSG:3857 → WGS84 좌표 변환
- */
-function epsg3857ToWgs84(x: number, y: number): [number, number] {
-  const lon = (x / (Math.PI * 6378137)) * 180;
-  const lat = Math.atan(Math.exp(y / 6378137)) * (360 / Math.PI) - 90;
-  return [lon, lat]; // GeoJSON [lng, lat] 순서
-}
-
-// eslint-disable-next-line @typescript-eslint/no-explicit-any
-function convertZoneToWgs84(data: any): Feature<MultiPolygon> {
-  const feat = data.features[0];
-  const multiCoords: number[][][][] = feat.geometry.coordinates.map(
-    (poly: number[][][]) => poly.map(
-      (ring: number[][]) => ring.map(([x, y]: number[]) => epsg3857ToWgs84(x, y)),
-    ),
-  );
-  return multiPolygon(multiCoords).geometry
-    ? { type: 'Feature', properties: {}, geometry: { type: 'MultiPolygon', coordinates: multiCoords } }
-    : multiPolygon(multiCoords) as unknown as Feature<MultiPolygon>;
-}
-
 export type FishingZoneId = 'ZONE_I' | 'ZONE_II' | 'ZONE_III' | 'ZONE_IV' | 'OUTSIDE';
 
 export interface FishingZoneInfo {
@@ -80,15 +55,23 @@ export interface FishingZoneInfo {
   allowed: string[];
 }
 
+/** 수역별 허가 업종 */
+const ZONE_ALLOWED: Record<string, string[]> = {
+  ZONE_I: ['PS', 'FC'],
+  ZONE_II: ['PT', 'OT', 'GN', 'PS', 'FC'],
+  ZONE_III: ['PT', 'OT', 'GN', 'PS', 'FC'],
+  ZONE_IV: ['GN', 'PS', 'FC'],
+};
+
 /**
- * 특정어업수역 Ⅰ~Ⅳ 폴리곤 (WGS84 변환 캐시)
+ * 특정어업수역 Ⅰ~Ⅳ 폴리곤 (사전 변환된 WGS84 GeoJSON)
  */
-const ZONE_POLYGONS: { id: FishingZoneId; name: string; allowed: string[]; geojson: Feature<MultiPolygon> }[] = [
+export const ZONE_POLYGONS = fishingZonesWgs84.features.map(f => ({
-  { id: 'ZONE_I', name: '수역Ⅰ(동해)', allowed: ['PS', 'FC'], geojson: convertZoneToWgs84(zone1Data) },
+  id: f.properties.id as FishingZoneId,
-  { id: 'ZONE_II', name: '수역Ⅱ(남해)', allowed: ['PT', 'OT', 'GN', 'PS', 'FC'], geojson: convertZoneToWgs84(zone2Data) },
+  name: f.properties.name,
-  { id: 'ZONE_III', name: '수역Ⅲ(서남해)', allowed: ['PT', 'OT', 'GN', 'PS', 'FC'], geojson: convertZoneToWgs84(zone3Data) },
+  allowed: ZONE_ALLOWED[f.properties.id] ?? [],
-  { id: 'ZONE_IV', name: '수역Ⅳ(서해)', allowed: ['GN', 'PS', 'FC'], geojson: convertZoneToWgs84(zone4Data) },
+  geojson: f as unknown as Feature<MultiPolygon>,
-];
+}));
 
 /**
  * 특정어업수역 폴리곤 기반 수역 분류