desktop 앱 적용

frontend/src/utils/platform.ts

@@ -0,0 +1,26 @@
+/** 런타임 플랫폼 — web · desktop(Tauri) · mobile */
+export type RuntimePlatform = 'web' | 'desktop' | 'mobile';
+
+export function isDesktop(): boolean {
+  return typeof window !== 'undefined' && '__TAURI__' in window;
+}
+
+export function isMobileCapacitor(): boolean {
+  if (typeof window === 'undefined') return false;
+  try {
+    const cap = (window as Window & { Capacitor?: { isNativePlatform?: () => boolean } }).Capacitor;
+    return cap?.isNativePlatform?.() === true;
+  } catch {
+    return false;
+  }
+}
+
+export function getRuntimePlatform(): RuntimePlatform {
+  if (isDesktop()) return 'desktop';
+  if (isMobileCapacitor()) return 'mobile';
+  return 'web';
+}
+
+export function isWeb(): boolean {
+  return getRuntimePlatform() === 'web';
+}