chore(app): rename app to 股行

- Update Android app label in AndroidManifest.xml
- Update iOS CFBundleDisplayName and CFBundleName in Info.plist

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/mining-app/android/app/src/main/AndroidManifest.xml

@@ -4,7 +4,7 @@
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
 
     <application
-        android:label="榴莲挖矿"
+        android:label="股行"
         android:name="${applicationName}"
         android:icon="@mipmap/ic_launcher"
         android:usesCleartextTraffic="true">

frontend/mining-app/ios/Runner/Info.plist

@@ -5,7 +5,7 @@
 	<key>CFBundleDevelopmentRegion</key>
 	<string>$(DEVELOPMENT_LANGUAGE)</string>
 	<key>CFBundleDisplayName</key>
-	<string>Mining App</string>
+	<string>股行</string>
 	<key>CFBundleExecutable</key>
 	<string>$(EXECUTABLE_NAME)</string>
 	<key>CFBundleIdentifier</key>
@@ -13,7 +13,7 @@
 	<key>CFBundleInfoDictionaryVersion</key>
 	<string>6.0</string>
 	<key>CFBundleName</key>
-	<string>mining_app</string>
+	<string>股行</string>
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>