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/android/gradle.properties

@@ -0,0 +1,45 @@
+# Project-wide Gradle settings.
+
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+# Default value: -Xmx512m -XX:MaxMetaspaceSize=256m
+org.gradle.jvmargs=-Xmx2048m -XX:MaxMetaspaceSize=512m
+
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app's APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
+
+# Use this property to specify which architecture you want to build.
+# You can also override it from the CLI using
+# ./gradlew <task> -PreactNativeArchitectures=x86_64
+reactNativeArchitectures=armeabi-v7a,arm64-v8a,x86,x86_64
+
+# Use this property to enable support to the new architecture.
+# This will allow you to use TurboModules and the Fabric render in
+# your application. You should enable this flag either if you want
+# to write custom TurboModules/Fabric components OR use libraries that
+# are providing them.
+newArchEnabled=false
+
+# Use this property to enable or disable the Hermes JS engine.
+# If set to false, you will be using JSC instead.
+hermesEnabled=true
+
+# Use this property to enable edge-to-edge display support.
+# This allows your app to draw behind system bars for an immersive UI.
+# Note: Only works with ReactActivity and should not be used with custom Activity.
+edgeToEdgeEnabled=false
+reactNativeArchitectures=arm64-v8a