a custom Pomodoro app using React. Build a single-page application with an App component containing: (1) a Dashboard component for the timer, progress bar, and task panel; (2) a StatsHub component for analytics; (3) a Settings component for timer customization, audio, and theme toggles; (4) a Rewards component for gamification; and (5) a global Mascot component that interacts across sections. Use a sidebar navigation with tabs ('Focus', 'Stats', 'Settings', 'Rewards') styled in earthy tones: forest green (#2F4F4F) background, creamy off-white (#F5E8C7) text, terracotta (#E2725B) hover effect.