Member show & MembershipFees: permissions, delete all, regenerate, errors

- Show: handle_info :member_updated and :put_flash; Linked User only when can_access_page? /users
- MembershipFeesComponent: can_create_cycle/can_destroy_cycle/can_update_cycle; buttons gated
- Delete all cycles via Ash.destroy (policy enforced); format_error Forbidden
- Regenerate cycles for normal_user and admin (no admin-only check)
- Member form: format_error tuple for membership_fee_type_id; Select a membership fee type (no None)
- show_membership_fees_test: read_only UI and policy tests

lib/mv_web/live/member_live/show.ex

@@ -125,22 +125,26 @@ defmodule MvWeb.MemberLive.Show do
                   />
                 </div>
 
-                <%!-- Linked User --%>
-                <div>
-                  <.data_field label={gettext("Linked User")}>
-                    <%= if @member.user do %>
-                      <.link
-                        navigate={~p"/users/#{@member.user}"}
-                        class="text-blue-700 hover:text-blue-800 underline inline-flex items-center gap-1"
-                      >
-                        <.icon name="hero-user" class="size-4" />
-                        {@member.user.email}
-                      </.link>
-                    <% else %>
-                      <span class="text-base-content/70 italic">{gettext("No user linked")}</span>
-                    <% end %>
-                  </.data_field>
-                </div>
+                <%!-- Linked User: only show when current user can see other users (e.g. admin).
+                  read_only cannot see linked user, so hide the section to avoid "No user linked" when
+                  a user is linked but not visible. --%>
+                <%= if can_access_page?(@current_user, "/users") do %>
+                  <div>
+                    <.data_field label={gettext("Linked User")}>
+                      <%= if @member.user do %>
+                        <.link
+                          navigate={~p"/users/#{@member.user}"}
+                          class="text-blue-700 hover:text-blue-800 underline inline-flex items-center gap-1"
+                        >
+                          <.icon name="hero-user" class="size-4" />
+                          {@member.user.email}
+                        </.link>
+                      <% else %>
+                        <span class="text-base-content/70 italic">{gettext("No user linked")}</span>
+                      <% end %>
+                    </.data_field>
+                  </div>
+                <% end %>
 
                 <%!-- Notes --%>
                 <%= if @member.notes && String.trim(@member.notes) != "" do %>
@@ -287,6 +291,23 @@ defmodule MvWeb.MemberLive.Show do
     {:noreply, assign(socket, :active_tab, :membership_fees)}
   end
 
+  # Flash set in LiveComponent is not shown in parent layout; child sends this to display flash
+  @impl true
+  def handle_info({:put_flash, type, message}, socket) do
+    {:noreply, put_flash(socket, type, message)}
+  end
+
+  # MembershipFeesComponent sends this after cycles are created/deleted/regenerated so parent keeps member in sync
+  @impl true
+  def handle_info({:member_updated, updated_member}, socket) do
+    member =
+      updated_member
+      |> Map.put(:last_cycle_status, get_last_cycle_status(updated_member))
+      |> Map.put(:current_cycle_status, get_current_cycle_status(updated_member))
+
+    {:noreply, assign(socket, :member, member)}
+  end
+
   defp page_title(:show), do: gettext("Show Member")
   defp page_title(:edit), do: gettext("Edit Member")