fix(libraryctl): 捕获/预检也走同一份 scope 映射

上一提交只改了 status；capture/preflight 仍直接读 routing bindings，
所以 CLI 封存的还是 bindings 里的库，而不是 API 的目标——契约读取直接失败。

cmd/libraryctl/main.go

@@ -558,7 +558,7 @@ func runPreflight(ctx context.Context, opts options) error {
 	if opts.scope != "internal" && opts.scope != "external" {
 		return errors.New("-scope must be internal or external")
 	}
-	binding, err := readRoutingBindings(ctx, opts.governancePG)
+	binding, err := scopeBindings(ctx, opts.governancePG)
 	if err != nil {
 		return err
 	}
@@ -660,7 +660,7 @@ func runCapture(ctx context.Context, opts options) error {
 	if err != nil {
 		return err
 	}
-	binding, err := readRoutingBindings(ctx, opts.governancePG)
+	binding, err := scopeBindings(ctx, opts.governancePG)
 	if err != nil {
 		return err
 	}