🚧 Add onboarding

src/components/layout/Common/useGradient.tsx

@@ -2,12 +2,12 @@ import { MantineGradient } from '@mantine/core';
 
 import { useColorTheme } from '../../../tools/color';
 
-export const usePrimaryGradient = (): MantineGradient => {
+export const usePrimaryGradient = () => {
   const { primaryColor, secondaryColor } = useColorTheme();
 
   return {
     from: primaryColor,
     to: secondaryColor,
     deg: 145,
-  };
+  } satisfies MantineGradient;
 };