add activity log with order timeline and global feed

Single activity_log table powering two views: chronological timeline
on each order detail page (replacing the old fulfilment card) and a
global feed at /admin/activity with tabs, category filters, search,
and pagination. Real-time via PubSub — new entries appear instantly,
nav badge updates across all admin pages.

Instrumented across all event points: Stripe webhooks, order notifier,
submission worker, fulfilment status worker, product sync worker, and
Oban exhausted-job telemetry. Contextual action buttons (retry
submission, retry sync, dismiss) with Oban unique constraints to
prevent double-enqueue. 90-day pruning via cron.

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

test/berrypod_web/live/admin/activity_test.exs

@@ -0,0 +1,169 @@
+defmodule BerrypodWeb.Admin.ActivityTest do
+  use BerrypodWeb.ConnCase, async: false
+
+  import Phoenix.LiveViewTest
+  import Berrypod.AccountsFixtures
+  import Berrypod.OrdersFixtures
+
+  alias Berrypod.ActivityLog
+
+  setup do
+    user = user_fixture()
+    %{user: user}
+  end
+
+  describe "unauthenticated" do
+    test "redirects to login", %{conn: conn} do
+      {:error, redirect} = live(conn, ~p"/admin/activity")
+      assert {:redirect, %{to: path}} = redirect
+      assert path == ~p"/users/log-in"
+    end
+  end
+
+  describe "activity page" do
+    setup %{conn: conn, user: user} do
+      conn = log_in_user(conn, user)
+      %{conn: conn}
+    end
+
+    test "renders empty state", %{conn: conn} do
+      {:ok, _view, html} = live(conn, ~p"/admin/activity")
+
+      assert html =~ "Activity"
+      assert html =~ "No activity to show"
+    end
+
+    test "renders activity entries", %{conn: conn} do
+      ActivityLog.log_event("sync.completed", "Product sync finished")
+      ActivityLog.log_event("order.created", "Order placed")
+
+      {:ok, _view, html} = live(conn, ~p"/admin/activity")
+
+      assert html =~ "Product sync finished"
+      assert html =~ "Order placed"
+    end
+
+    test "links to order when order_id present", %{conn: conn} do
+      order = order_fixture(payment_status: "paid")
+
+      ActivityLog.log_event("order.created", "Order placed", order_id: order.id)
+
+      {:ok, _view, html} = live(conn, ~p"/admin/activity")
+
+      assert html =~ "View order"
+      assert html =~ ~p"/admin/orders/#{order}"
+    end
+
+    test "filters by attention tab", %{conn: conn} do
+      ActivityLog.log_event("sync.completed", "Sync OK")
+      ActivityLog.log_event("order.submission_failed", "Submission failed", level: "error")
+
+      {:ok, view, _html} = live(conn, ~p"/admin/activity")
+
+      html = render_click(view, "tab", %{"tab" => "attention"})
+
+      assert html =~ "Submission failed"
+      refute html =~ "Sync OK"
+    end
+
+    test "filters by category", %{conn: conn} do
+      ActivityLog.log_event("sync.completed", "Sync done")
+      ActivityLog.log_event("order.created", "Order placed")
+
+      {:ok, view, _html} = live(conn, ~p"/admin/activity")
+
+      html = render_click(view, "category", %{"category" => "syncs"})
+
+      assert html =~ "Sync done"
+      refute html =~ "Order placed"
+    end
+
+    test "searches by order number", %{conn: conn} do
+      order = order_fixture(payment_status: "paid")
+      _other_order = order_fixture(payment_status: "paid")
+
+      ActivityLog.log_event("order.created", "First order", order_id: order.id)
+
+      ActivityLog.log_event("sync.completed", "Sync done")
+
+      {:ok, view, _html} = live(conn, ~p"/admin/activity")
+
+      html =
+        render_submit(view, "search", %{"search" => %{"query" => order.order_number}})
+
+      assert html =~ "First order"
+      refute html =~ "Sync done"
+    end
+
+    test "dismisses a warning entry", %{conn: conn} do
+      {:ok, entry} =
+        ActivityLog.log_event("order.cancelled", "Order cancelled", level: "warning")
+
+      {:ok, view, html} = live(conn, ~p"/admin/activity?tab=attention")
+
+      assert html =~ "Order cancelled"
+      assert html =~ "Dismiss"
+
+      render_click(view, "resolve", %{"id" => entry.id})
+
+      {:ok, _view, html} = live(conn, ~p"/admin/activity?tab=attention")
+      refute html =~ "Order cancelled"
+    end
+
+    test "shows retry submission button for failed orders", %{conn: conn} do
+      order = order_fixture(payment_status: "paid")
+
+      ActivityLog.log_event("order.submission_failed", "Submission failed",
+        level: "error",
+        order_id: order.id
+      )
+
+      {:ok, _view, html} = live(conn, ~p"/admin/activity?tab=attention")
+
+      assert html =~ "Retry submission"
+    end
+
+    test "shows retry sync button for failed syncs", %{conn: conn} do
+      ActivityLog.log_event("sync.failed", "Sync failed",
+        level: "error",
+        payload: %{connection_id: Ecto.UUID.generate()}
+      )
+
+      {:ok, _view, html} = live(conn, ~p"/admin/activity?tab=attention")
+
+      assert html =~ "Retry sync"
+    end
+
+    test "updates via PubSub", %{conn: conn} do
+      {:ok, view, _html} = live(conn, ~p"/admin/activity")
+
+      ActivityLog.log_event("sync.started", "Sync kicked off")
+
+      html = render(view)
+      assert html =~ "Sync kicked off"
+    end
+  end
+
+  describe "nav badge" do
+    setup %{conn: conn, user: user} do
+      conn = log_in_user(conn, user)
+      %{conn: conn}
+    end
+
+    test "shows badge when attention items exist", %{conn: conn} do
+      ActivityLog.log_event("order.submission_failed", "Something broke", level: "error")
+
+      {:ok, _view, html} = live(conn, ~p"/admin/activity")
+
+      # The nav badge should show the count
+      assert html =~ "admin-badge-warning"
+    end
+
+    test "hides badge when no attention items", %{conn: conn} do
+      {:ok, _view, html} = live(conn, ~p"/admin/activity")
+
+      # No badge should be rendered
+      refute html =~ "admin-badge-warning"
+    end
+  end
+end