Clean up redundant .gitignore rules for Android build artifacts

- Remove redundant specific file patterns inside android/app/build/
- Fix misleading comment that suggested build artifacts were source configs
- Simplify configuration by relying on broader android/app/build/ rule
- Improve maintainability and reduce confusion in .gitignore

The specific file patterns were unnecessary since android/app/build/ already
covers all build artifacts. This eliminates redundant rules and clarifies
that these are generated build files, not source configuration files.

.gitignore

@@ -83,11 +83,7 @@ ios/App/App/public/assets/
 ios/App/App/build/
 ios/App/build/
 
-# Capacitor generated configs (keep source configs)
-android/app/build/intermediates/assets/debug/mergeDebugAssets/capacitor.*.json
-android/app/build/intermediates/compressed_assets/debug/compressDebugAssets/out/assets/capacitor.*.json.jar
-android/app/build/intermediates/merged_java_res/debug/mergeDebugJavaResource/feature-capacitor-cordova-android-plugins.jar
-android/app/build/outputs/aar/capacitor-cordova-android-plugins-debug.aar
+# Capacitor build artifacts (covered by android/app/build/ above)
 
 # Keep these Capacitor files in version control:
 # - capacitor.config.json (root, electron, ios)