feat: implement TodoList component with filtering and priority management

feat: add useAmbientSound hook for ambient sound management

feat: create useLocalStorage hook for persistent state management

feat: develop useTheme hook for theme switching functionality

feat: implement useTimer hook for Pomodoro timer logic

feat: create useTodos hook for managing todo list functionality

style: add global styles and custom scrollbar for better UI experience

chore: set up main entry point for the application

feat: define types for Timer, Todo, and Statistics

feat: create utility function for class name merging

chore: configure Tailwind CSS for styling

chore: set up TypeScript configuration for the project

chore: configure Vite for development and build process

src/hooks/useLocalStorage.ts

@@ -0,0 +1,30 @@
+import { useState, useCallback } from 'react';
+
+export function useLocalStorage<T>(key: string, initialValue: T): [T, (value: T | ((prev: T) => T)) => void] {
+  const [storedValue, setStoredValue] = useState<T>(() => {
+    if (typeof window === 'undefined') {
+      return initialValue;
+    }
+    try {
+      const item = window.localStorage.getItem(key);
+      return item ? JSON.parse(item) : initialValue;
+    } catch (error) {
+      console.warn(`Error reading localStorage key "${key}":`, error);
+      return initialValue;
+    }
+  });
+
+  const setValue = useCallback((value: T | ((prev: T) => T)) => {
+    try {
+      const valueToStore = value instanceof Function ? value(storedValue) : value;
+      setStoredValue(valueToStore);
+      if (typeof window !== 'undefined') {
+        window.localStorage.setItem(key, JSON.stringify(valueToStore));
+      }
+    } catch (error) {
+      console.warn(`Error setting localStorage key "${key}":`, error);
+    }
+  }, [key, storedValue]);
+
+  return [storedValue, setValue];
+}