add pagination across all admin and shop views

URL-based offset pagination with ?page=N for bookmarkable pages.
Admin views use push_patch, shop collection uses navigate links.
Responsive on mobile with horizontal-scroll tables and stacking
pagination controls. Includes dev seed script for testing.

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

lib/berrypod_web/components/core_components.ex

@@ -333,34 +333,36 @@ defmodule BerrypodWeb.CoreComponents do
       end
 
     ~H"""
-    <table class="admin-table admin-table-zebra">
-      <thead>
-        <tr>
-          <th :for={col <- @col}>{col[:label]}</th>
-          <th :if={@action != []}>
-            <span class="sr-only">{gettext("Actions")}</span>
-          </th>
-        </tr>
-      </thead>
-      <tbody id={@id} phx-update={is_struct(@rows, Phoenix.LiveView.LiveStream) && "stream"}>
-        <tr :for={row <- @rows} id={@row_id && @row_id.(row)}>
-          <td
-            :for={col <- @col}
-            phx-click={@row_click && @row_click.(row)}
-            class={@row_click && "hover:cursor-pointer"}
-          >
-            {render_slot(col, @row_item.(row))}
-          </td>
-          <td :if={@action != []} class="w-0 font-semibold">
-            <div class="flex gap-4">
-              <%= for action <- @action do %>
-                {render_slot(action, @row_item.(row))}
-              <% end %>
-            </div>
-          </td>
-        </tr>
-      </tbody>
-    </table>
+    <div class="admin-table-wrap">
+      <table class="admin-table admin-table-zebra">
+        <thead>
+          <tr>
+            <th :for={col <- @col}>{col[:label]}</th>
+            <th :if={@action != []}>
+              <span class="sr-only">{gettext("Actions")}</span>
+            </th>
+          </tr>
+        </thead>
+        <tbody id={@id} phx-update={is_struct(@rows, Phoenix.LiveView.LiveStream) && "stream"}>
+          <tr :for={row <- @rows} id={@row_id && @row_id.(row)}>
+            <td
+              :for={col <- @col}
+              phx-click={@row_click && @row_click.(row)}
+              class={@row_click && "hover:cursor-pointer"}
+            >
+              {render_slot(col, @row_item.(row))}
+            </td>
+            <td :if={@action != []} class="w-0 font-semibold">
+              <div class="flex gap-4">
+                <%= for action <- @action do %>
+                  {render_slot(action, @row_item.(row))}
+                <% end %>
+              </div>
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
     """
   end
 
@@ -622,4 +624,88 @@ defmodule BerrypodWeb.CoreComponents do
     |> JS.exec("close()", to: "##{id}")
     |> JS.pop_focus()
   end
+
+  # ── Pagination ───────────────────────────────────────────────────
+
+  @doc """
+  Renders pagination controls for admin lists.
+
+  Hidden when there's only one page. Shows "Showing X-Y of Z" on the left,
+  page number buttons with ellipsis on the right.
+
+  ## Attributes
+
+    * `page` - Required. A `%Berrypod.Pagination{}` struct.
+    * `patch` - Required. Base URL path for pagination links (e.g. "/admin/products").
+    * `params` - Extra query params to preserve (e.g. %{"tab" => "broken"}). Default `%{}`.
+  """
+  attr :page, Berrypod.Pagination, required: true
+  attr :patch, :string, required: true
+  attr :params, :map, default: %{}
+
+  def admin_pagination(assigns) do
+    assigns =
+      assigns
+      |> assign(:showing, Berrypod.Pagination.showing_text(assigns.page))
+      |> assign(:numbers, Berrypod.Pagination.page_numbers(assigns.page))
+
+    ~H"""
+    <nav
+      :if={@page.total_pages > 1}
+      aria-label="Pagination"
+      class="admin-pagination"
+    >
+      <p class="admin-pagination-showing">{@showing}</p>
+
+      <div class="admin-pagination-buttons">
+        <.link
+          patch={admin_page_url(@patch, @page.page - 1, @params)}
+          class={["admin-btn admin-btn-sm admin-btn-ghost", @page.page == 1 && "admin-btn-disabled"]}
+          aria-label="Previous page"
+          aria-disabled={@page.page == 1 && "true"}
+          tabindex={@page.page == 1 && "-1"}
+        >
+          <.icon name="hero-chevron-left" class="size-4" />
+        </.link>
+
+        <%= for item <- @numbers do %>
+          <%= case item do %>
+            <% :ellipsis -> %>
+              <span class="admin-pagination-ellipsis" aria-hidden="true">&hellip;</span>
+            <% n -> %>
+              <.link
+                patch={admin_page_url(@patch, n, @params)}
+                aria-label={"Page #{n}"}
+                aria-current={n == @page.page && "page"}
+                class={[
+                  "admin-btn admin-btn-sm",
+                  if(n == @page.page, do: "admin-btn-primary", else: "admin-btn-ghost")
+                ]}
+              >
+                {n}
+              </.link>
+          <% end %>
+        <% end %>
+
+        <.link
+          patch={admin_page_url(@patch, @page.page + 1, @params)}
+          class={[
+            "admin-btn admin-btn-sm admin-btn-ghost",
+            @page.page == @page.total_pages && "admin-btn-disabled"
+          ]}
+          aria-label="Next page"
+          aria-disabled={@page.page == @page.total_pages && "true"}
+          tabindex={@page.page == @page.total_pages && "-1"}
+        >
+          <.icon name="hero-chevron-right" class="size-4" />
+        </.link>
+      </div>
+    </nav>
+    """
+  end
+
+  defp admin_page_url(base, page, params) do
+    query = if page > 1, do: Map.put(params, "page", to_string(page)), else: params
+    if query == %{}, do: base, else: base <> "?" <> URI.encode_query(query)
+  end
 end