支持build lib生成固定文件名的包和导出js style，避免污染应用层的style

scripts/generate-css-export.js

@@ -0,0 +1,39 @@
+#!/usr/bin/env node
+import fs from 'fs'
+import path from 'path'
+import { fileURLToPath } from 'url'
+
+// ES模块中的__dirname等价物
+const __filename = fileURLToPath(import.meta.url)
+const __dirname = path.dirname(__filename)
+
+// 构建后生成CSS导出文件
+function generateCssExport() {
+  const distDir = path.resolve(__dirname, '../npm-package/dist')
+  const cssFile = path.join(distDir, 'assets/jordium-gantt-vue3.css')
+  const outputFile = path.join(distDir, 'jordium-gantt-vue3-styles.js')
+
+  try {
+    if (fs.existsSync(cssFile)) {
+      const cssContent = fs.readFileSync(cssFile, 'utf8')
+
+      // 生成JS导出文件
+      const jsContent = `// CSS styles for jordium-gantt-vue3
+// Auto-generated file - do not edit manually
+export const ganttStyles = ${JSON.stringify(cssContent)}
+export default ganttStyles
+`
+
+      fs.writeFileSync(outputFile, jsContent, 'utf8')
+      console.log('✅ Generated CSS export file:', outputFile)
+    } else {
+      console.warn('⚠️ CSS file not found:', cssFile)
+    }
+  } catch (error) {
+    console.error('❌ Failed to generate CSS export:', error)
+    process.exit(1)
+  }
+}
+
+// 运行
+generateCssExport()