Add statistics route, permissions, and sidebar entry

- /statistics route and PagePaths.statistics
- Permission sets: viewer and admin can access /statistics
- Sidebar link with can_access_page check
- Plug and sidebar tests updated

lib/mv/authorization/permission_sets.ex

@@ -178,7 +178,9 @@ defmodule Mv.Authorization.PermissionSets do
         # Groups overview
         "/groups",
         # Group detail
-        "/groups/:slug"
+        "/groups/:slug",
+        # Statistics
+        "/statistics"
       ]
     }
   end
@@ -243,7 +245,9 @@ defmodule Mv.Authorization.PermissionSets do
         # Group detail
         "/groups/:slug",
         # Edit group
-        "/groups/:slug/edit"
+        "/groups/:slug/edit",
+        # Statistics
+        "/statistics"
       ]
     }
   end

lib/mv_web/components/layouts/sidebar.ex

@@ -88,6 +88,14 @@ defmodule MvWeb.Layouts.Sidebar do
         />
       <% end %>
 
+      <%= if can_access_page?(@current_user, PagePaths.statistics()) do %>
+        <.menu_item
+          href={~p"/statistics"}
+          icon="hero-chart-bar"
+          label={gettext("Statistics")}
+        />
+      <% end %>
+
       <%= if admin_menu_visible?(@current_user) do %>
         <.menu_group
           icon="hero-cog-6-tooth"

lib/mv_web/page_paths.ex

@@ -9,6 +9,7 @@ defmodule MvWeb.PagePaths do
   # Sidebar top-level menu paths
   @members "/members"
   @membership_fee_types "/membership_fee_types"
+  @statistics "/statistics"
 
   # Administration submenu paths (all must match router)
   @users "/users"
@@ -31,6 +32,9 @@ defmodule MvWeb.PagePaths do
   @doc "Path for Membership Fee Types index (sidebar and page permission check)."
   def membership_fee_types, do: @membership_fee_types
 
+  @doc "Path for Statistics page (sidebar and page permission check)."
+  def statistics, do: @statistics
+
   @doc "Paths for Administration menu; show group if user can access any of these."
   def admin_menu_paths, do: @admin_page_paths
 

lib/mv_web/router.ex

@@ -73,6 +73,9 @@ defmodule MvWeb.Router do
 
       # Membership Fee Types Management
       live "/membership_fee_types", MembershipFeeTypeLive.Index, :index
+
+      # Statistics
+      live "/statistics", StatisticsLive, :index
       live "/membership_fee_types/new", MembershipFeeTypeLive.Form, :new
       live "/membership_fee_types/:id/edit", MembershipFeeTypeLive.Form, :edit