This PR changes the following:

Breaking Changes

• Removed the default presetUno configuration; users now need to configure it manually ⚠️
  • Now, you can use --preset wind3 or --preset wind4 to switch as your default preset. But if you have configured uno.config, this option will be ignored.
• Replaced --write-transformed with --rewrite

New Features and Optimizations

• Added debug mode, allowing you to clearly see which files are scanned and collected. Enable with --debug
• Added more granular parsing to patterns.
• Allows users to manually decide whether to rewrite the transformer for custom scanned files.

{
  cli: {
    entry: {
      patterns: [
        './src/pages/**/*.vue',
      ],
      outFile: './src/unocss-generated.css',
+     rewrite: true
    },
  },
  transformers: [
    transformerDirectives(),
  ],
}

• Allows users to decide whether to output scanned CSS with --split-css
  • false: Do not output CSS files
  • true: Transform and output scanned CSS file contents to outFile
  • 'multi': Output each CSS file separately with filename format ${outFile}-[hash]
  • 'single': Merge multiple CSS files into one output file named outFile-merged.css

This resolves the previous issue where CSS files would be automatically discarded when detected during scanning.
Fixed #4902

{
  cli: {
    entry: {
      patterns: [
        './src/pages/**/*.css',
      ],
      outFile: './src/unocss-generated.css',
+     splitCss: true
    },
  },
  transformers: [
    transformerDirectives(),
  ],
}