refactor(types): remove dead catch-all clauses unreachable per success typing

lib/mv/config.ex

@@ -207,8 +207,6 @@ defmodule Mv.Config do
     end
   end
 
-  defp derive_app_url_from_api_url(_), do: nil
-
   @doc """
   Returns true if Vereinfacht is fully configured (URL, API key, and club ID all set).
   """
@@ -251,7 +249,6 @@ defmodule Mv.Config do
     case System.get_env(key) do
       nil -> false
       v when is_binary(v) -> String.trim(v) != ""
-      _ -> false
     end
   end
 
@@ -270,9 +267,6 @@ defmodule Mv.Config do
       value when is_binary(value) ->
         v = String.trim(value) |> String.downcase()
         v in ["true", "1", "yes"]
-
-      _ ->
-        false
     end
   end
 
@@ -328,7 +322,6 @@ defmodule Mv.Config do
 
   defp present?(nil), do: false
   defp present?(s) when is_binary(s), do: String.trim(s) != ""
-  defp present?(_), do: false
 
   # ---------------------------------------------------------------------------
   # OIDC authentication

lib/mv/mailer.ex

@@ -190,6 +190,4 @@ defmodule Mv.Mailer do
   defp valid_email?(email) when is_binary(email) do
     Regex.match?(@email_regex, String.trim(email))
   end
-
-  defp valid_email?(_), do: false
 end

lib/mv/membership/import/member_csv.ex

@@ -210,8 +210,6 @@ defmodule Mv.Membership.Import.MemberCSV do
     MapSet.member?(HeaderMapper.known_member_fields(), normalized)
   end
 
-  defp member_field?(_), do: false
-
   # Validates that row count doesn't exceed limit
   defp validate_row_count(rows, max_rows) do
     if length(rows) > max_rows do

lib/mv/membership/member_export.ex

@@ -522,6 +522,4 @@ defmodule Mv.Membership.MemberExport do
       other -> other
     end)
   end
-
-  defp normalize_computed_fields(_), do: []
 end

lib/mv/oidc_role_sync.ex

@@ -87,8 +87,6 @@ defmodule Mv.OidcRoleSync do
     ArgumentError -> nil
   end
 
-  defp safe_get_atom(_map, _key), do: nil
-
   defp peek_jwt_claims(token) do
     parts = String.split(token, ".")