Update favicon and logo assets in `public/` directory

Remove unused imports and redundant state variable in Toolbar components

Add dark mode styles for `chrome-picker` component

Replace image-based ThumbPop logo with SVG

Update ThumbPop logo assets

Add dark mode support across components with ThemeProvider integration

Refactor background removal overlay logic

Refactor background removal feature to adhere to clean architecture principles

Refactor settings feature to align with clean architecture principles

Add validation for stored canvas state in LoadCanvasState use case

Add AGENTS.md with repository guidelines and coding standards

refactor: align editor and ai features with architecture

Update architecture guide with functional approach and testing practices

Add architecture guide to documentation

refactor(ai): Implement full DI and clean architecture for AI feature