feat: merge rustore test UI and unify SKU format across channels

- Merge VK login/link/check and Review test buttons from dev_rustore
- Unify Rustore/GooglePlay SKU format via ChannelHelpers.normalizeSkuList()
- Fix ChannelConfig runtime sync: Java InitSDK sets channel from ChannelHelpers.CHANNEL
- Fix AndroidMinSdkVersion 25→26 for tuyoosdk compatibility
- Fix Flexion AndroidManifest tools:replace missing fullBackupContent value
- Add [CHANNEL-VERIFY] debug logs for channel verification

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

sdk-intergration/Assets/Plugins/Android/mainTemplate.gradle

@@ -13,7 +13,7 @@ android {
 }
 // Android Resolver Exclusions End
 android {
-	namespace "com.unity3d.player"
+    namespace "com.unity3d.player"
 }
 
 dependencies {
@@ -36,7 +36,7 @@ dependencies {
     implementation 'net.aihelp:android-aihelp-aar:5.3.+'
     
     implementation 'com.google.android.gms:play-services-auth:20.2.0'
-    implementation('com.android.billingclient:billing:6.0.1')
+    implementation('com.android.billingclient:billing:7.0.0')
     
     implementation 'com.google.android.gms:play-services-basement:18.2.0'
     implementation 'androidx.fragment:fragment:1.3.6'
@@ -48,7 +48,7 @@ dependencies {
     
     implementation 'com.miui.referrer:homereferrer:1.0.0.6'
     
-    implementation platform('com.google.firebase:firebase-bom:32.7.4')
+    implementation platform('com.google.firebase:firebase-bom:34.6.0')
     implementation 'com.google.firebase:firebase-analytics'
 
     implementation('com.facebook.android:facebook-android-sdk:16.2.0')
@@ -72,26 +72,15 @@ dependencies {
     implementation 'com.appsflyer:purchase-connector:2.2.0' // Assets/AppsFlyer/Editor/AppsFlyerDependencies.xml:8
     implementation 'com.appsflyer:unity-wrapper:6.17.7' // Assets/AppsFlyer/Editor/AppsFlyerDependencies.xml:6
     implementation 'com.google.android.ump:user-messaging-platform:2.1.0' // Assets/MaxSdk/AppLovin/Editor/Dependencies.xml:5
+    implementation 'com.tapjoy:tapjoy-android-unitybridge:14.5.0' // Packages/com.unity.package-offerwall/Editor/TJPluginDependencies.xml:10
 // Android Resolver Dependencies End
 **DEPS**}
 
-// Android Resolver Exclusions Start
-android {
-  packagingOptions {
-      exclude ('/lib/armeabi/*' + '*')
-      exclude ('/lib/mips/*' + '*')
-      exclude ('/lib/mips64/*' + '*')
-      exclude ('/lib/x86/*' + '*')
-      exclude ('/lib/x86_64/*' + '*')
-  }
-}
-// Android Resolver Exclusions End
 android {
     ndkPath "**NDKPATH**"
 
     compileSdkVersion **APIVERSION**
     buildToolsVersion '**BUILDTOOLS**'
-
     compileOptions {
         sourceCompatibility JavaVersion.VERSION_11
         targetCompatibility JavaVersion.VERSION_11