revert: remove unrelated tailwindcss and config changes

These changes belong in a separate PR:
- postcss.config.js: Windows tailwindcss resolve workaround
- src/tailwind.css: @source path change
- config/md-raw-loader.cjs: trailing newline fix

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

config/md-raw-loader.cjs

@@ -1,4 +1,4 @@
 module.exports = function mdRawLoader(source) {
   this.cacheable?.();
   return `export default ${JSON.stringify(String(source))};`;
-};
+};

postcss.config.js

@@ -1,35 +1,3 @@
-const path = require('path');
-
-// Workaround for https://github.com/ant-design/ant-design-pro/issues/11747
-// On Windows, @tailwindcss/node uses enhanced-resolve with a 4-second
-// CachedInputFileSystem that can cache stale negative results (e.g. when
-// Windows Defender locks node_modules). This causes intermittent
-// "Can't resolve 'tailwindcss'" errors. Setting __tw_resolve bypasses
-// enhanced-resolve by using Node.js require.resolve, which is reliable.
-if (typeof globalThis.__tw_resolve !== 'function') {
-  globalThis.__tw_resolve = (specifier, fromDir) => {
-    if (specifier.startsWith('.') || specifier.startsWith('/')) return;
-    try {
-      const pkgJsonPath = require.resolve(specifier + '/package.json', {
-        paths: [fromDir],
-      });
-      const pkg = require(pkgJsonPath);
-      const pkgDir = path.dirname(pkgJsonPath);
-      if (pkg.exports?.['.']?.style) {
-        return path.join(pkgDir, pkg.exports['.'].style);
-      }
-      if (pkg.style) {
-        return path.join(pkgDir, pkg.style);
-      }
-      const indexPath = path.join(pkgDir, 'index.css');
-      try {
-        require('fs').accessSync(indexPath);
-        return indexPath;
-      } catch {}
-    } catch {}
-  };
-}
-
 module.exports = {
   plugins: {
     '@tailwindcss/postcss': {},

src/tailwind.css

@@ -1,3 +1,3 @@
 @import "tailwindcss";
 
-@source ".";
+@source "./src";