feat: add CountEntries to skip decryption for list --detail (#562)

* feat: add CountEntries to skip decryption for list --detail (#549)
* test: add CountEntries and countCategory tests at browser level
* fix: address review feedback on CountRows and countLocalStorage
* test: add CountRows unit tests

browser/chromium/extract_bookmark_test.go

@@ -7,8 +7,9 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
-func TestExtractBookmarks(t *testing.T) {
-	path := createTestJSON(t, "Bookmarks", `{
+func setupBookmarkJSON(t *testing.T) string {
+	t.Helper()
+	return createTestJSON(t, "Bookmarks", `{
 		"roots": {
 			"bookmark_bar": {
 				"name": "Bookmarks Bar",
@@ -33,6 +34,10 @@ func TestExtractBookmarks(t *testing.T) {
 			}
 		}
 	}`)
+}
+
+func TestExtractBookmarks(t *testing.T) {
+	path := setupBookmarkJSON(t)
 
 	got, err := extractBookmarks(path)
 	require.NoError(t, err)
@@ -52,6 +57,22 @@ func TestExtractBookmarks(t *testing.T) {
 	assert.Equal(t, "News", got[2].Folder) // parent folder name
 }
 
+func TestCountBookmarks(t *testing.T) {
+	path := setupBookmarkJSON(t)
+
+	count, err := countBookmarks(path)
+	require.NoError(t, err)
+	assert.Equal(t, 3, count) // 3 URLs, folders not counted
+}
+
+func TestCountBookmarks_Empty(t *testing.T) {
+	path := createTestJSON(t, "Bookmarks", `{"roots": {}}`)
+
+	count, err := countBookmarks(path)
+	require.NoError(t, err)
+	assert.Equal(t, 0, count)
+}
+
 func TestExtractBookmarks_FoldersExcluded(t *testing.T) {
 	path := createTestJSON(t, "Bookmarks", `{
 		"roots": {