add custom page LiveView with catch-all routing

Shop.CustomPage handles /:slug catch-all for CMS pages. Restructured
router so the catch-all is last — all admin, auth, setup, and SEO
routes defined before the shop scope to prevent interception.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

test/berrypod_web/live/shop/custom_page_test.exs

@@ -0,0 +1,123 @@
+defmodule BerrypodWeb.Shop.CustomPageTest do
+  use BerrypodWeb.ConnCase, async: false
+
+  import Phoenix.LiveViewTest
+  import Berrypod.AccountsFixtures
+
+  alias Berrypod.Pages
+  alias Berrypod.Pages.PageCache
+
+  setup do
+    PageCache.invalidate_all()
+    user = user_fixture()
+    {:ok, _} = Berrypod.Settings.set_site_live(true)
+    %{user: user}
+  end
+
+  describe "published custom page" do
+    setup do
+      {:ok, _} =
+        Pages.create_custom_page(%{
+          slug: "our-story",
+          title: "Our story",
+          meta_description: "Learn about us"
+        })
+
+      :ok
+    end
+
+    test "renders at /:slug", %{conn: conn} do
+      {:ok, _view, html} = live(conn, "/our-story")
+      assert html =~ "Our story"
+    end
+
+    test "sets page title", %{conn: conn} do
+      {:ok, view, _html} = live(conn, "/our-story")
+      assert page_title(view) =~ "Our story"
+    end
+  end
+
+  describe "unpublished custom page" do
+    setup do
+      {:ok, _} =
+        Pages.create_custom_page(%{
+          slug: "draft-page",
+          title: "Draft page",
+          published: false
+        })
+
+      :ok
+    end
+
+    test "redirects anonymous users to home", %{conn: conn} do
+      {:error, {:live_redirect, %{to: "/"}}} = live(conn, "/draft-page")
+    end
+
+    test "renders for admin users", %{conn: conn, user: user} do
+      conn = log_in_user(conn, user)
+      {:ok, _view, html} = live(conn, "/draft-page")
+      assert html =~ "Draft page"
+    end
+  end
+
+  describe "nonexistent page" do
+    test "redirects to home with flash", %{conn: conn} do
+      {:error, {:live_redirect, %{to: "/"}}} = live(conn, "/does-not-exist")
+    end
+  end
+
+  describe "system routes are unaffected" do
+    test "/about still routes to Content LiveView", %{conn: conn} do
+      {:ok, _view, html} = live(conn, "/about")
+      assert html =~ "About"
+    end
+
+    test "/cart still routes to Cart LiveView", %{conn: conn} do
+      {:ok, _view, html} = live(conn, "/cart")
+      assert html =~ "cart"
+    end
+  end
+
+  describe "custom page with blocks" do
+    setup do
+      {:ok, _} =
+        Pages.create_custom_page(%{
+          slug: "faq",
+          title: "FAQ",
+          blocks: [
+            %{
+              "id" => "blk_test1",
+              "type" => "hero",
+              "settings" => %{
+                "title" => "Frequently asked questions",
+                "description" => "Answers to common questions",
+                "variant" => "page"
+              }
+            }
+          ]
+        })
+
+      :ok
+    end
+
+    test "renders blocks", %{conn: conn} do
+      {:ok, _view, html} = live(conn, "/faq")
+      assert html =~ "Frequently asked questions"
+    end
+  end
+
+  describe "page editor on custom pages" do
+    setup do
+      {:ok, _} =
+        Pages.create_custom_page(%{slug: "editable", title: "Editable page"})
+
+      :ok
+    end
+
+    test "editing works with ?edit=true", %{conn: conn, user: user} do
+      conn = log_in_user(conn, user)
+      {:ok, view, _html} = live(conn, "/editable?edit=true")
+      assert has_element?(view, ".page-editor-sidebar")
+    end
+  end
+end