docs: add banner, update readme

README.md

@@ -1,12 +1,16 @@
 # Sudoku
 
+![Sudoku Banner][sudoku_banner]
+
 ![coverage][coverage_badge]
 [![style: very good analysis][very_good_analysis_badge]][very_good_analysis_link]
 [![License: MIT][license_badge]][license_link]
 
 Generated by the [Very Good CLI][very_good_cli_link] 🤖
 
-A Sudoku game made with Flutter, and integrated with Gemini.
+A Sudoku puzzle application made with [Flutter][flutter], [Genkit][genkit] (Powered by [Gemini][gemini]), and [Firebase][firebase].
+
+Developed by [@thecodexhub][thecodexhub] for the [Gemini API Competition][competition].
 
 ---
 
@@ -89,6 +93,13 @@ For more details on how to add strings, supported locales, and translations into
 - Android app icons are generated from [Easy App Icon][easy_app_icon]
 - iOS app icons are generated from [App Icon][app_icon]
 
+[sudoku_banner]: ./art/sudoku_banner.jpg
+[competition]: https://ai.google.dev/competition
+[thecodexhub]: https://github.com/thecodexhub
+[flutter]: https://flutter.dev/
+[genkit]: https://firebase.google.com/docs/genkit
+[firebase]: https://firebase.google.com/
+[gemini]: https://ai.google.dev/
 [coverage_badge]: coverage_badge.svg
 [flutter_localizations_link]: https://api.flutter.dev/flutter/flutter_localizations/flutter_localizations-library.html
 [internationalization_link]: https://flutter.dev/docs/development/accessibility-and-localization/internationalization