fix(patch): cherry-pick 78a28bf to release/v0.15.3-pr-13188 to patch version v0.15.3 and create version 0.15.4 (#13228)

Co-authored-by: Jacob Richman <jacob314@gmail.com>

packages/cli/src/ui/components/Header.tsx

@@ -5,9 +5,8 @@
  */
 
 import type React from 'react';
-import { Box, Text } from 'ink';
-import Gradient from 'ink-gradient';
-import { theme } from '../semantic-colors.js';
+import { Box } from 'ink';
+import { ThemedGradient } from './ThemedGradient.js';
 import {
   shortAsciiLogo,
   longAsciiLogo,
@@ -26,26 +25,6 @@ interface HeaderProps {
   nightly: boolean;
 }
 
-const ThemedGradient: React.FC<{ children: React.ReactNode }> = ({
-  children,
-}) => {
-  const gradient = theme.ui.gradient;
-
-  if (gradient && gradient.length >= 2) {
-    return (
-      <Gradient colors={gradient}>
-        <Text>{children}</Text>
-      </Gradient>
-    );
-  }
-
-  if (gradient && gradient.length === 1) {
-    return <Text color={gradient[0]}>{children}</Text>;
-  }
-
-  return <Text>{children}</Text>;
-};
-
 export const Header: React.FC<HeaderProps> = ({
   customAsciiArt,
   version,