translate field names for visibility dropdown

lib/mv_web/live/components/field_visibility_dropdown_component.ex

@@ -152,9 +152,25 @@ defmodule MvWeb.Components.FieldVisibilityDropdownComponent do
   defp field_to_string(field) when is_atom(field), do: Atom.to_string(field)
   defp field_to_string(field) when is_binary(field), do: field
 
-  defp format_field_label(field) do
+  defp format_field_label(field) when is_atom(field) do
+    MvWeb.Translations.MemberFields.label(field)
+  end
+
+  defp format_field_label(field) when is_binary(field) do
+    case safe_to_existing_atom(field) do
+      {:ok, atom} -> MvWeb.Translations.MemberFields.label(atom)
+      :error -> fallback_label(field)
+    end
+  end
+
+  defp safe_to_existing_atom(string) do
+    {:ok, String.to_existing_atom(string)}
+  rescue
+    ArgumentError -> :error
+  end
+
+  defp fallback_label(field) do
     field
-    |> field_to_string()
     |> String.replace("_", " ")
     |> String.split()
     |> Enum.map_join(" ", &String.capitalize/1)

lib/mv_web/translations/member_fields.ex

@@ -0,0 +1,41 @@
+defmodule MvWeb.Translations.MemberFields do
+  @moduledoc """
+  Helper module to dynamically translate member field names.
+
+  ## Features
+  - Translates technical field names (atoms) to human-friendly localized text
+  - Used primarily in the field visibility dropdown component
+
+  ## Example
+
+      iex> MvWeb.Translations.MemberFields.label(:first_name)
+      "Vorname"  # when locale is "de"
+
+      iex> MvWeb.Translations.MemberFields.label(:first_name)
+      "First Name"  # when locale is "en"
+  """
+  use Gettext, backend: MvWeb.Gettext
+
+  @spec label(atom()) :: String.t()
+  def label(:first_name), do: gettext("First Name")
+  def label(:last_name), do: gettext("Last Name")
+  def label(:email), do: gettext("Email")
+  def label(:paid), do: gettext("Paid")
+  def label(:phone_number), do: gettext("Phone")
+  def label(:join_date), do: gettext("Join Date")
+  def label(:exit_date), do: gettext("Exit Date")
+  def label(:notes), do: gettext("Notes")
+  def label(:city), do: gettext("City")
+  def label(:street), do: gettext("Street")
+  def label(:house_number), do: gettext("House Number")
+  def label(:postal_code), do: gettext("Postal Code")
+
+  # Fallback for unknown fields
+  def label(field) do
+    field
+    |> to_string()
+    |> String.replace("_", " ")
+    |> String.split()
+    |> Enum.map_join(" ", &String.capitalize/1)
+  end
+end