fix: clean up legacy rolldown-vite directory during sync

Address review feedback: existing clones may still have a `rolldown-vite/`
directory after the rename. This adds automatic cleanup in sync-remote and
keeps `rolldown-vite` in .gitignore so it doesn't appear as untracked.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: Boshen

.gitignore

@@ -5,5 +5,6 @@ dist
 *.tsbuildinfo
 .DS_Store
 rolldown
+rolldown-vite
 vite
 /crates/vite_global_cli/vp

packages/tools/src/sync-remote-deps.ts

@@ -636,6 +636,13 @@ export async function syncRemote() {
   // Get the root directory (assuming script is run from root)
   const rootDir = process.cwd();
 
+  // Clean up legacy 'rolldown-vite' directory (renamed to 'vite')
+  const legacyViteDir = join(rootDir, 'rolldown-vite');
+  if (existsSync(legacyViteDir)) {
+    rmSync(legacyViteDir, { recursive: true, force: true });
+    log('Removed legacy rolldown-vite directory');
+  }
+
   if (values.clean) {
     log('Cleaning existing repositories...');
     if (existsSync(join(rootDir, ROLLDOWN_DIR))) {