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Summary of Changes

Hello @easyhooon, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request completes a significant technical migration by replacing the Gson library with Kotlinx Serialization throughout the application. This change modernizes the project's approach to JSON handling, aligning it with current Kotlin best practices and leveraging the benefits of a type-safe and performant serialization framework. The update spans build configurations, core data repositories, UI converters, and even test files, ensuring a consistent and complete transition.

Highlights

• Serialization Library Migration: The project has fully migrated from using Gson to Kotlinx Serialization for all JSON serialization and deserialization tasks.
• Dependency Updates: The app/build.gradle.kts file has been updated to include the Kotlin serialization plugin and remove the Gson dependency.
• Codebase Refactoring: All instances of Gson API calls (e.g., toJson, fromJson) have been replaced with their Kotlinx Serialization equivalents (e.g., Json.encodeToString, Json.decodeFromString) across relevant files.
• Documentation Update: The README.md file has been updated to reflect the change in the serialization library used by the project.