feat: add caching to avoid multiple clone

taskfile/reader.go

@@ -187,9 +187,20 @@ func (o *promptFuncOption) ApplyToReader(r *Reader) {
 // building an [ast.TaskfileGraph] as it goes. If any errors occur, they will be
 // returned immediately.
 func (r *Reader) Read(ctx context.Context, node Node) (*ast.TaskfileGraph, error) {
+	startTime := time.Now()
+
+	// Clean up git cache after reading all taskfiles
+	defer func() {
+		_ = CleanGitCache()
+	}()
+
 	if err := r.include(ctx, node); err != nil {
 		return nil, err
 	}
+
+	elapsed := time.Since(startTime)
+	r.debugf("task: Taskfiles loaded in %.2fs\n", elapsed.Seconds())
+
 	return r.graph, nil
 }