feat: 선종 필터 패널 재구현 + signalKindCode 백엔드 응답 우선

- ShipFilterPanel: 선종별 표시/숨김 토글 (전체 ON/OFF 포함)
- Sidebar gnb1에 ShipFilterPanel 연결
- aisTargetApi: 백엔드 signalKindCode 필드 우선, 없으면 vesselType fallback

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

src/api/aisTargetApi.js

@@ -35,7 +35,8 @@ export async function searchAisTargets(minutes = 60) {
  */
 export function aisTargetToFeature(aisTarget) {
   const mmsi = String(aisTarget.mmsi || '');
-  const signalKindCode = mapVesselTypeToKindCode(aisTarget.vesselType);
+  // 백엔드에서 signalKindCode를 직접 제공, 없으면 vesselType 기반 fallback
+  const signalKindCode = aisTarget.signalKindCode || mapVesselTypeToKindCode(aisTarget.vesselType);
 
   return {
     // 고유 식별자 (AIS 신호원 코드 + MMSI)

src/components/layout/Sidebar.jsx

@@ -3,6 +3,7 @@ import { useNavigate, useLocation } from 'react-router-dom';
 import SideNav, { keyToPath, pathToKey } from './SideNav';
 
 // 구현된 페이지
+import ShipFilterPanel from '../ship/ShipFilterPanel';
 import ReplayPage from '../../pages/ReplayPage';
 import AreaSearchPage from '../../areaSearch/components/AreaSearchPage';
 
@@ -49,7 +50,7 @@ export default function Sidebar() {
   // 활성 키에 따른 패널 컴포넌트 렌더링
   const renderPanel = () => {
     const panelMap = {
-      gnb1: null, // TODO: 필터/디스플레이 패널 재구현
+      gnb1: <ShipFilterPanel {...panelProps} />,
       gnb4: null, // TODO: 분석 패널
       gnb5: null, // TODO: 타임라인 패널
       gnb7: <ReplayPage {...panelProps} />,

src/components/ship/ShipFilterPanel.jsx

@@ -0,0 +1,125 @@
+/**
+ * 선박 필터 패널
+ * - 선종별 표시/숨김 토글
+ * - 기존 DisplayComponent의 필터 탭을 민간화 버전으로 재구현
+ */
+import { useState, memo, useCallback } from 'react';
+import useShipStore from '../../stores/shipStore';
+import { SHIP_KIND_LIST } from '../../types/constants';
+
+/**
+ * 스위치 그룹 헤더 + 접이식 본문
+ */
+const SwitchGroup = memo(({ title, children, defaultOpen = true }) => {
+  const [isOpen, setIsOpen] = useState(defaultOpen);
+
+  return (
+    <div className="switchGroup">
+      <div className="sgHeader">
+        <div className="colL">{title}</div>
+        <button
+          type="button"
+          className={`toggleBtn ${isOpen ? 'is-open' : ''}`}
+          onClick={() => setIsOpen((v) => !v)}
+          aria-label="접기/펼치기"
+        />
+      </div>
+      <div className={`switchBox ${isOpen ? 'is-open' : ''}`}>
+        {children}
+      </div>
+    </div>
+  );
+});
+
+/**
+ * 개별 토글 스위치 (CSS 토글은 기존 common.css의 .switch 클래스 사용)
+ */
+const ToggleSwitch = memo(({ label, checked, onChange }) => (
+  <li>
+    <span>{label}</span>
+    <label className="switch">
+      <input type="checkbox" checked={checked} onChange={onChange} />
+      <span className="slider" />
+    </label>
+  </li>
+));
+
+/**
+ * 전체 ON/OFF 토글
+ */
+const AllToggle = memo(({ label, allChecked, onToggleAll }) => (
+  <li>
+    <span style={{ fontWeight: 'bold' }}>{label}</span>
+    <label className="switch">
+      <input type="checkbox" checked={allChecked} onChange={onToggleAll} />
+      <span className="slider" />
+    </label>
+  </li>
+));
+
+/**
+ * 선박 필터 패널 메인 컴포넌트
+ */
+export default function ShipFilterPanel({ isOpen, onToggle }) {
+  const kindVisibility = useShipStore((s) => s.kindVisibility);
+  const kindCounts = useShipStore((s) => s.kindCounts);
+  const toggleKindVisibility = useShipStore((s) => s.toggleKindVisibility);
+
+  // 선종 전체 토글
+  const allKindVisible = Object.values(kindVisibility).every(Boolean);
+  const handleToggleAllKind = useCallback(() => {
+    const nextValue = !allKindVisible;
+    SHIP_KIND_LIST.forEach(({ code }) => {
+      if (kindVisibility[code] !== nextValue) {
+        toggleKindVisibility(code);
+      }
+    });
+  }, [allKindVisible, kindVisibility, toggleKindVisibility]);
+
+  // 전체 선박 수
+  const totalCount = Object.values(kindCounts).reduce((sum, v) => sum + v, 0);
+
+  return (
+    <div className={`slidePanel ${!isOpen ? 'is-closed' : ''}`}>
+      {/* 탭 헤더 */}
+      <div className="tabBox">
+        <ul className="tabMenu">
+          <li className="is-active">
+            <button type="button">필터</button>
+          </li>
+        </ul>
+      </div>
+
+      {/* 필터 본문 */}
+      <div className="tabWrap is-active">
+        <div className="tabWrapInner">
+          <div className="tabWrapCnt">
+
+            {/* 선종 필터 */}
+            <SwitchGroup title="선종">
+              <ul className="switchList">
+                <AllToggle
+                  label={`전체 (${totalCount.toLocaleString()})`}
+                  allChecked={allKindVisible}
+                  onToggleAll={handleToggleAllKind}
+                />
+                {SHIP_KIND_LIST.map(({ code, label }) => (
+                  <ToggleSwitch
+                    key={code}
+                    label={`${label} (${(kindCounts[code] || 0).toLocaleString()})`}
+                    checked={!!kindVisibility[code]}
+                    onChange={() => toggleKindVisibility(code)}
+                  />
+                ))}
+              </ul>
+            </SwitchGroup>
+
+          </div>
+        </div>
+      </div>
+
+      {/* 패널 토글 버튼 */}
+      <button type="button" className="toogle" onClick={onToggle} aria-label="패널 접기/펼치기" />
+    </div>
+  );
+}