v2.0.2: E2B model support, signed APK, S21 compatibility confirmed

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: vNeeL-code

app/build.gradle.kts

@@ -14,8 +14,8 @@ android {
         applicationId = "com.gemma.api"
         minSdk = 31
         targetSdk = 35
-        versionCode = 3
-        versionName = "2.0.1"
+        versionCode = 4
+        versionName = "2.0.2"
 
         ndk {
             abiFilters.add("arm64-v8a")