feat(mobile): Expo → RN CLI 전환 + Android 빌드 성공

RN 0.85 + React 19 기반 apps/mobile-rn 프로젝트 생성.
6개 화면 이식 (Login, Dash, History, Record, Talk, Settings).
@react-navigation/native + bottom-tabs 네비게이션 구성.
Windows NDK CMake libc++_shared 링크 버그 워크아라운드 포함.
Galaxy Fold (SM_F956N) 무선 디버깅 APK 설치 확인.

apps/mobile-rn/metro.config.js

@@ -0,0 +1,22 @@
+const { getDefaultConfig, mergeConfig } = require('@react-native/metro-config');
+const path = require('path');
+
+const projectRoot = __dirname;
+const monorepoRoot = path.resolve(projectRoot, '../..');
+
+const config = {
+  watchFolders: [
+    path.resolve(monorepoRoot, 'packages/core'),
+    path.resolve(monorepoRoot, 'packages/ui-native'),
+    path.resolve(monorepoRoot, 'packages/i18n'),
+    path.resolve(monorepoRoot, 'packages/api-client'),
+  ],
+  resolver: {
+    nodeModulesPaths: [
+      path.resolve(projectRoot, 'node_modules'),
+      path.resolve(monorepoRoot, 'node_modules'),
+    ],
+  },
+};
+
+module.exports = mergeConfig(getDefaultConfig(__dirname), config);