diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
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+# Contributing
+
+## Getting Started
+
+1. Fork and clone the repository
+2. Run `flutter pub get` to install dependencies
+3. Run `dart run build_runner build` to generate code
+4. Start developing!
+
+## Development
+
+- Follow Dart/Flutter conventions
+- Run `flutter analyze` before submitting
+- Test your changes thoroughly
+
+## Internationalization (i18n)
+
+This project uses `slang` for internationalization with JSON files.
+
+### Adding New Strings
+
+1. Add your string to `lib/i18n/strings.i18n.json`:
+ ```json
+ {
+ "section": {
+ "myNewString": "My new text"
+ }
+ }
+ ```
+
+2. Run `dart run slang` to regenerate translation files
+
+3. Use in your code:
+ ```dart
+ Text(t.section.myNewString)
+ ```
+
+### Adding New Languages
+
+1. Create new JSON file: `lib/i18n/strings_[locale].i18n.json`
+2. Copy structure from `strings.i18n.json` and translate values
+3. Run `dart run slang` to regenerate files
+
+### Guidelines
+
+- Organize strings logically in nested objects
+- Use camelCase for keys
+- Keep strings concise and clear
+- Always run `dart run slang` after changes
diff --git a/android/app/src/main/AndroidManifest.xml b/android/app/src/main/AndroidManifest.xml
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+++ b/android/app/src/main/AndroidManifest.xml
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