Align ast-grep fallback downloader version

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/tools/ast-grep/downloader.ts

@@ -16,7 +16,7 @@ const REPO = "ast-grep/ast-grep"
 
 // IMPORTANT: Update this when bumping @ast-grep/cli in package.json
 // This is only used as fallback when @ast-grep/cli package.json cannot be read
-const DEFAULT_VERSION = "0.40.0"
+const DEFAULT_VERSION = "0.41.1"
 
 function getAstGrepVersion(): string {
   try {