feat: Phase 1 mobile tablet — Jenkins APK, PC tab, in-app update

Capacitor 확장으로 git push 시 Mobile Jenkins 빌드, PC 탭 Android/iPad 다운로드,
앱 내 APK 업데이트, iOS TestFlight API 및 Capacitor ios 프로젝트를 추가한다.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/App.css

@@ -13467,6 +13467,10 @@ html.theme-light .tam-disclaimer     { color: #90a4ae; }
   color: #fff; font-size: 13px; font-weight: 700; cursor: pointer;
 }
 .app-download-pc-btn:hover { filter: brightness(1.06); }
+.app-download-pc-btn--link {
+  display: inline-flex; align-items: center; justify-content: center;
+  text-decoration: none; box-sizing: border-box;
+}
 .tmb-desktop-update-btn.busy { opacity: 0.65; cursor: wait; }
 .tmb-desktop-update-btn.busy svg { animation: tmb-update-spin 0.9s linear infinite; }
 @keyframes tmb-update-spin { to { transform: rotate(360deg); } }

frontend/src/components/AppDownloadModal.tsx

@@ -147,20 +147,98 @@ const MobileTab: React.FC = () => {
       </details>
 
       <p className="app-download-ios-note">
-        iOS는 App Store / TestFlight 배포가 필요합니다. 현재 QR·APK 설치는 Android 전용입니다.
+        iPad는 PC 프로그램 탭의 TestFlight 링크를 이용하세요. 이 탭의 QR·APK는 Android 전용입니다.
       </p>
     </>
   );
 };
 
 const PlatformCard: React.FC<{
-  platform: 'mac' | 'windows';
+  platform: 'mac' | 'windows' | 'android' | 'ipad';
   release?: DesktopAppPlatformReleaseDto;
-}> = ({ platform, release }) => {
-  const isMac = platform === 'mac';
-  const label = isMac ? 'macOS (Apple Silicon · Intel)' : 'Windows (64-bit)';
-  const icon = isMac ? '🍎' : '🪟';
-  const ext = isMac ? '.dmg' : '.exe';
+  mobile?: MobileAppReleaseInfoDto | null;
+}> = ({ platform, release, mobile }) => {
+  const configs = {
+    mac: { label: 'macOS (Apple Silicon · Intel)', icon: '🍎', ext: '.dmg', isLink: false },
+    windows: { label: 'Windows (64-bit)', icon: '🪟', ext: '.exe', isLink: false },
+    android: { label: 'Android (패드 · 폰)', icon: '🤖', ext: '.apk', isLink: false },
+    ipad: { label: 'iPad (TestFlight)', icon: '📱', ext: '', isLink: true },
+  } as const;
+  const { label, icon, ext } = configs[platform];
+
+  if (platform === 'android') {
+    if (!mobile?.available || !mobile.downloadUrl) {
+      return (
+        <div className="app-download-pc-card app-download-pc-card--empty">
+          <div className="app-download-pc-icon" aria-hidden>{icon}</div>
+          <div>
+            <strong>{label}</strong>
+            <p className="app-download-muted">설치 파일 준비 중 ({ext})</p>
+          </div>
+        </div>
+      );
+    }
+    return (
+      <div className="app-download-pc-card">
+        <div className="app-download-pc-icon" aria-hidden>{icon}</div>
+        <div className="app-download-pc-body">
+          <strong>{label}</strong>
+          <p className="app-download-meta">
+            {mobile.version && <span>v{mobile.version}</span>}
+            {mobile.sizeBytes != null && <span>{formatBytes(mobile.sizeBytes)}</span>}
+            {mobile.updatedAt && <span>{mobile.updatedAt}</span>}
+          </p>
+          <p className="app-download-muted app-download-url" title={mobile.downloadUrl}>
+            {mobile.fileName ?? `goldenchart-android${ext}`}
+          </p>
+        </div>
+        <button
+          type="button"
+          className="app-download-pc-btn"
+          onClick={() => triggerDownload(mobile.downloadUrl!, mobile.fileName ?? `goldenchart-android${ext}`)}
+        >
+          다운로드
+        </button>
+      </div>
+    );
+  }
+
+  if (platform === 'ipad') {
+    const testFlightUrl = mobile?.iosTestFlightUrl?.trim();
+    if (!mobile?.iosAvailable || !testFlightUrl) {
+      return (
+        <div className="app-download-pc-card app-download-pc-card--empty">
+          <div className="app-download-pc-icon" aria-hidden>{icon}</div>
+          <div>
+            <strong>{label}</strong>
+            <p className="app-download-muted">TestFlight 링크 준비 중</p>
+          </div>
+        </div>
+      );
+    }
+    return (
+      <div className="app-download-pc-card">
+        <div className="app-download-pc-icon" aria-hidden>{icon}</div>
+        <div className="app-download-pc-body">
+          <strong>{label}</strong>
+          <p className="app-download-meta">
+            <span>TestFlight 베타</span>
+          </p>
+          <p className="app-download-muted app-download-url" title={testFlightUrl}>
+            Apple TestFlight 초대 링크
+          </p>
+        </div>
+        <a
+          href={testFlightUrl}
+          target="_blank"
+          rel="noopener noreferrer"
+          className="app-download-pc-btn app-download-pc-btn--link"
+        >
+          TestFlight 열기
+        </a>
+      </div>
+    );
+  }
 
   if (!release?.available || !release.downloadUrl) {
     return (
@@ -309,6 +387,7 @@ const DesktopBuildProgressPanel: React.FC<{
 
 const DesktopTab: React.FC<{ canBuildDesktop: boolean }> = ({ canBuildDesktop }) => {
   const [info, setInfo] = useState<DesktopAppReleaseInfoDto | null>(null);
+  const [mobileInfo, setMobileInfo] = useState<MobileAppReleaseInfoDto | null>(null);
   const [buildStatus, setBuildStatus] = useState<DesktopAppBuildStatusDto | null>(null);
   const [loading, setLoading] = useState(true);
   const [error, setError] = useState<string | null>(null);
@@ -318,9 +397,13 @@ const DesktopTab: React.FC<{ canBuildDesktop: boolean }> = ({ canBuildDesktop })
   const [elapsedTick, setElapsedTick] = useState(0);
 
   const reloadRelease = useCallback(async () => {
-    const data = await loadDesktopAppReleaseInfo();
-    setInfo(data);
-    return data;
+    const [desktop, mobile] = await Promise.all([
+      loadDesktopAppReleaseInfo(),
+      loadMobileAppReleaseInfo(),
+    ]);
+    setInfo(desktop);
+    setMobileInfo(mobile);
+    return desktop;
   }, []);
 
   const reloadBuildStatus = useCallback(async () => {
@@ -388,7 +471,8 @@ const DesktopTab: React.FC<{ canBuildDesktop: boolean }> = ({ canBuildDesktop })
     }
   }, [canBuildDesktop, buildBusy, isBuilding, reloadBuildStatus]);
 
-  const hasAny = info?.mac?.available || info?.windows?.available;
+  const hasAny = info?.mac?.available || info?.windows?.available
+    || mobileInfo?.available || mobileInfo?.iosAvailable;
 
   if (loading) return <p className="app-download-muted">PC 프로그램 정보 불러오는 중…</p>;
   if (error) return <p className="app-download-error">{error}</p>;
@@ -450,7 +534,7 @@ const DesktopTab: React.FC<{ canBuildDesktop: boolean }> = ({ canBuildDesktop })
           <div className="app-download-empty-icon" aria-hidden>💻</div>
           <h3>설치 파일 준비 중</h3>
           <p>
-            macOS(.dmg) 또는 Windows(.exe) 설치 파일이 아직 서버에 없습니다.
+            macOS(.dmg), Windows(.exe), Android(.apk) 또는 iPad TestFlight 링크가 아직 준비되지 않았습니다.
             <br />
             {canBuildDesktop
               ? '우측 상단 「앱 빌드」 버튼으로 Jenkins 빌드를 시작하세요.'
@@ -469,6 +553,8 @@ const DesktopTab: React.FC<{ canBuildDesktop: boolean }> = ({ canBuildDesktop })
         <div className="app-download-pc-list">
           <PlatformCard platform="mac" release={info?.mac} />
           <PlatformCard platform="windows" release={info?.windows} />
+          <PlatformCard platform="android" mobile={mobileInfo} />
+          <PlatformCard platform="ipad" mobile={mobileInfo} />
         </div>
       )}
 
@@ -486,7 +572,10 @@ const DesktopTab: React.FC<{ canBuildDesktop: boolean }> = ({ canBuildDesktop })
               <code>xattr -cr /Applications/GoldenChart.app</code> 실행 후 다시 열어보세요.
             </li>
             <li><strong>Windows</strong>: setup.exe를 실행하고 안내에 따라 설치합니다.</li>
+            <li><strong>Android (패드·폰)</strong>: APK를 다운로드한 뒤 설치합니다. 패드와 폰은 동일 APK입니다.</li>
+            <li><strong>iPad</strong>: TestFlight 링크로 베타 앱을 설치합니다 (App Store 정책상 ipa 직접 다운로드 불가).</li>
             <li>설치된 PC 앱은 메뉴 우측 상단 <strong>업데이트</strong> 버튼으로 자동 업데이트할 수 있습니다.</li>
+            <li>Android 앱은 시작 시 또는 설정에서 새 APK 버전을 안내합니다.</li>
             <li>빌드는 Git <code>main</code> 최신 커밋 기준이며, 완료 후 설치 파일이 자동으로 배포됩니다.</li>
           </ol>
         </details>

frontend/src/utils/backendApi.ts

@@ -637,6 +637,8 @@ export interface MobileAppReleaseInfoDto {
   updatedAt?: string;
   downloadUrl?: string;
   installPageUrl?: string;
+  iosAvailable?: boolean;
+  iosTestFlightUrl?: string;
 }
 
 export async function loadMobileAppReleaseInfo(): Promise<MobileAppReleaseInfoDto | null> {