fix: make employee detail page human-readable

tests/test_employee_detail_template.py

@@ -0,0 +1,13 @@
+from pathlib import Path
+
+
+def test_employee_detail_template_is_human_readable():
+    template = Path("app/templates/employee_detail.html").read_text(encoding="utf-8")
+
+    assert "Current data" not in template
+    assert "<pre class=\"code\"" not in template
+    assert ">Tabs<" not in template
+    assert "Основная информация" in template
+    assert "Контакты" in template
+    assert "Разделы профиля" in template
+    assert "Snapshots" in template