- Added `markdown` dependency version `^7.2.1` in `pubspec.yaml`.
- Updated `pubspec.lock` to reflect the direct dependency change.
- Refactored `streaming_helper.dart` to utilize `StreamingResponseController` for better stream management.
- Enhanced `ChatMessagesNotifier` to handle message streams with improved formatting and error handling.
- Updated `StreamingMarkdownWidget` to streamline markdown rendering and support new configurations.
- Replaced `gpt_markdown` with `flutter_markdown_plus` in `pubspec.yaml`.
- Updated `pubspec.lock` to reflect the new dependency version.
- Modified `markdown_config.dart` to generalize styling configuration.
- Updated `streaming_markdown_widget.dart` to utilize `MarkdownBody` for rendering markdown content.
- Replaced `flutter_highlight` with `gpt_markdown` in `pubspec.yaml`.
- Updated `pubspec.lock` to reflect new dependencies and removed obsolete ones.
- Deleted outdated Riverpod migration documentation files to streamline the project.
- Added new configurations for GptMarkdown styling in `markdown_config.dart` and updated the streaming markdown widget implementation.
