fix: localize admin UI and simplify employees navigation

tests/test_admin_templates.py

@@ -0,0 +1,32 @@
+from pathlib import Path
+
+
+def test_base_navigation_is_russian_and_has_no_legacy_employees_link():
+    template = Path("app/templates/base.html").read_text(encoding="utf-8")
+
+    assert "Обзор" in template
+    assert "Сотрудники" in template
+    assert "Запуски" in template
+    assert "Выйти" in template
+    assert ">Employees<" not in template
+    assert "/admin/employees" not in template
+
+
+def test_directory_template_is_russian_and_uses_display_dates():
+    template = Path("app/templates/directory.html").read_text(encoding="utf-8")
+
+    assert "Сотрудники" in template
+    assert "Колонки" in template
+    assert "Применить" in template
+    assert "Найдено:" in template
+    assert "employee.first_seen_display" in template
+    assert "employee.last_seen_display" in template
+    assert "employee.dismissed_display" in template
+    assert "Directory" not in template
+    assert "employees found" not in template
+
+
+def test_admin_employees_route_redirects_to_directory():
+    source = Path("app/admin.py").read_text(encoding="utf-8")
+
+    assert 'RedirectResponse("/admin/directory", status_code=303)' in source