fix: 한국 필터 토글 시 선박 표시 복원 + 필터별 개별 탐지 카운트

- anyKoreaFilterOn 시 filteredShips(필터 결과) 전달, 비활성 시 allShips(전체) 전달
- 상단 배너: 합산 "N척 탐지" → 필터별 개별 카운트 (불법어선 3척, 다크베셀 5척 등)

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

frontend/src/components/korea/KoreaMap.tsx

@@ -189,7 +189,8 @@ export function KoreaMap({ ships, allShips, aircraft, satellites, layers, osintF
     );
   }, []);
 
-  // 줌 레벨별 아이콘/심볼 스케일 배율 — z4=1.0x 기준, 2단계씩 상향
+  const anyKoreaFilterOn = koreaFilters.illegalFishing || koreaFilters.illegalTransship || koreaFilters.darkVessel || koreaFilters.cableWatch || koreaFilters.dokdoWatch || koreaFilters.ferryWatch;
+
   // 줌 레벨별 아이콘/심볼 스케일 배율 — z4=0.8x, z6=1.0x 시작, 2단계씩 상향
   const zoomScale = useMemo(() => {
     if (zoomLevel <= 4) return 0.8;
@@ -568,7 +569,13 @@ export function KoreaMap({ ships, allShips, aircraft, satellites, layers, osintF
         />
       </Source>
 
-      {layers.ships && <ShipLayer ships={allShips ?? ships} militaryOnly={layers.militaryOnly} analysisMap={vesselAnalysis?.analysisMap} hiddenShipCategories={hiddenShipCategories} hiddenNationalities={hiddenNationalities} />}
+      {layers.ships && <ShipLayer
+        ships={anyKoreaFilterOn ? ships : (allShips ?? ships)}
+        militaryOnly={layers.militaryOnly}
+        analysisMap={vesselAnalysis?.analysisMap}
+        hiddenShipCategories={hiddenShipCategories}
+        hiddenNationalities={hiddenNationalities}
+      />}
       {/* Transship suspect labels — Marker DOM, inline styles kept for dynamic border color */}
       {transshipSuspects.size > 0 && ships.filter(s => transshipSuspects.has(s.mmsi)).map(s => (
         <Marker key={`ts-${s.mmsi}`} longitude={s.lng} latitude={s.lat} anchor="bottom">
@@ -671,14 +678,29 @@ export function KoreaMap({ ships, allShips, aircraft, satellites, layers, osintF
       {layers.osint && <OsintMapLayer osintFeed={osintFeed} currentTime={currentTime} />}
       {layers.eez && <EezLayer />}
 
-      {/* Filter Status Banner */}
+      {/* Filter Status Banner — 필터별 개별 탐지 카운트 */}
       {(() => {
         const active = (Object.keys(koreaFilters) as (keyof KoreaFiltersState)[]).filter(k => koreaFilters[k]);
         if (active.length === 0) return null;
+        const filterCount: Record<string, number> = {
+          illegalFishing: (allShips ?? ships).filter(s => {
+            if (s.mtCategory !== 'fishing' || s.flag === 'KR') return false;
+            return classifyFishingZone(s.lat, s.lng).zone !== 'OUTSIDE';
+          }).length,
+          illegalTransship: transshipSuspects.size,
+          darkVessel: ships.filter(s => {
+            const dto = vesselAnalysis?.analysisMap.get(s.mmsi);
+            return dto?.algorithms.darkVessel.isDark || (s.lastSeen && currentTime - s.lastSeen > 3600000);
+          }).length,
+          cableWatch: cableWatchSuspects.size,
+          dokdoWatch: dokdoWatchSuspects.size,
+          ferryWatch: (allShips ?? ships).filter(s => s.mtCategory === 'passenger').length,
+        };
         return (
           <div className="absolute top-2.5 left-1/2 -translate-x-1/2 z-20 flex gap-1.5 backdrop-blur-lg">
             {active.map(k => {
               const color = FILTER_COLOR[k];
+              const count = filterCount[k] ?? 0;
               return (
                 <div
                   key={k}
@@ -690,12 +712,10 @@ export function KoreaMap({ ships, allShips, aircraft, satellites, layers, osintF
                 >
                   <span className="text-[13px]">{FILTER_ICON[k]}</span>
                   {t(FILTER_I18N_KEY[k])}
+                  <span className="ml-0.5 text-white/80">{count}척</span>
                 </div>
               );
             })}
-            <div className="rounded-lg px-3 py-1.5 font-mono text-xs font-bold flex items-center bg-kcg-glass border border-kcg-border-light text-white">
-              {t('korea.detected', { count: ships.length })}
-            </div>
           </div>
         );
       })()}