Code Cleanup, UI Polish, and Data Consistency Improvements

[kairosci-dev]

Introduction

This pull request focuses on a comprehensive refinement of the application, targeting three key areas: codebase hygiene, visual interface polishing, and internal data consistency. The goal is to reduce technical debt while simultaneously elevating the user experience with a more modern design.

Explanation

Specific changes included in this PR:

• UI/Visual Polish:
  • BlurCard: Enhanced the card design with a larger border radius, subtle box shadows, and increased padding for a softer, more modern aesthetic.
  • Getting Started: Replaced the static background image with a cleaner gradient and adjusted logo sizing/spacing to improve visual balance during onboarding.
• Codebase Cleanup:
  • Removed unused imports across multiple hooks and widgets (e.g., use_deep_linking.dart, featured.dart, summary_card.dart) to streamline dependencies.
  • Cleaned up formatting in the CLI entry point and removed unused splash background configuration from pubspec.yaml.
• Logic & Consistency:
  • Refactored MiniLyricsPage and WindowsAudioService to standardize how track and album data is accessed, removing redundant null checks.
  • Explicitly marked _hasMore as final in MetadataPluginRepositoriesNotifier to enforce immutability where appropriate.

Motivation

These changes are motivated by the need to maintain a high standard of code quality and user experience.

1. Maintainability: Removing unused imports and assets reduces clutter, making the codebase easier to read and faster to compile.
2. User Experience: The UI updates ensure the app feels polished and contemporary, improving the first impression for new users.
3. Stability: Refactoring data handling in key services prevents potential null reference errors and ensures the application behaves predictably across different platforms.