fix:修复报错

build.js

@@ -25,8 +25,35 @@ function copyDir(srcDir, destDir) {
   }
 }
 
+/** 清空目录内容（不删目录本身），避免 EPERM（如宝塔 wwwroot 下 dist 无法 rmSync） */
+function emptyDir(dir) {
+  if (!fs.existsSync(dir)) return;
+  for (const name of fs.readdirSync(dir)) {
+    const p = path.join(dir, name);
+    try {
+      if (fs.statSync(p).isDirectory()) {
+        fs.rmSync(p, { recursive: true });
+      } else {
+        fs.unlinkSync(p);
+      }
+    } catch (e) {
+      if (e.code !== 'EPERM' && e.code !== 'EACCES') throw e;
+    }
+  }
+}
+
 function main() {
-  if (fs.existsSync(DIST)) fs.rmSync(DIST, { recursive: true });
+  if (fs.existsSync(DIST)) {
+    try {
+      fs.rmSync(DIST, { recursive: true });
+    } catch (e) {
+      if (e.code === 'EPERM' || e.code === 'EACCES') {
+        emptyDir(DIST);
+      } else {
+        throw e;
+      }
+    }
+  }
   fs.mkdirSync(DIST, { recursive: true });
 
   copyFile(path.join(ROOT, 'index.html'), path.join(DIST, 'index.html'));