chore: bump version to 2.3.2

- Update version code to 232
- Update version name to 2.3.2
- Prepare for testing Google Play signed APK download feature

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: graycreate

config.gradle

@@ -1,7 +1,7 @@
 ext {
     app = [
-            versionCode: 231,
-            versionName: "2.3.1"
+            versionCode: 232,
+            versionName: "2.3.2"
     ]
     android = [
             supportVersion: '26.1.0'