fix(oban): Handle @reboot cron schedule with timezone

lib/sentry/integrations/oban/cron.ex

@@ -88,23 +88,26 @@ defmodule Sentry.Integrations.Oban.Cron do
   end
 
   defp job_to_check_in_opts(job, config) when is_struct(job, Oban.Job) do
-    monitor_config_opts = Sentry.Config.integrations()[:monitor_config_defaults]
-    monitor_config_opts = maybe_put_timezone_option(monitor_config_opts, job)
+    # Check schedule first - if empty (e.g., @reboot), skip check-in entirely
+    # since @reboot can't be expressed as a cron/interval schedule
+    case schedule_opts(job) do
+      [] ->
+        nil
 
-    monitor_slug =
-      case config[:monitor_slug_generator] do
-        nil ->
-          slugify(job.worker)
+      schedule_opts ->
+        monitor_config_opts = Sentry.Config.integrations()[:monitor_config_defaults]
+        monitor_config_opts = maybe_put_timezone_option(monitor_config_opts, job)
+        monitor_config_opts = Keyword.merge(monitor_config_opts, schedule_opts)
 
-        {mod, fun} when is_atom(mod) and is_atom(fun) ->
-          mod |> apply(fun, [job]) |> slugify()
-      end
+        monitor_slug =
+          case config[:monitor_slug_generator] do
+            nil ->
+              slugify(job.worker)
 
-    case Keyword.merge(monitor_config_opts, schedule_opts(job)) do
-      [] ->
-        nil
+            {mod, fun} when is_atom(mod) and is_atom(fun) ->
+              mod |> apply(fun, [job]) |> slugify()
+          end
 
-      monitor_config_opts ->
         id = CheckInIDMappings.lookup_or_insert_new(job.id)
 
         opts = [

test/sentry/integrations/oban/cron_test.exs

@@ -48,6 +48,19 @@ defmodule Sentry.Integrations.Oban.CronTest do
       })
     end
 
+    test "ignores #{event_type} events with a cron expr of @reboot even with timezone", %{
+      bypass: bypass
+    } do
+      Bypass.down(bypass)
+
+      :telemetry.execute([:oban, :job, unquote(event_type)], %{}, %{
+        job: %Oban.Job{
+          worker: "Sentry.MyWorker",
+          meta: %{"cron" => true, "cron_expr" => "@reboot", "cron_tz" => "Etc/UTC"}
+        }
+      })
+    end
+
     test "ignores #{event_type} events with a cron expr that is not a string", %{bypass: bypass} do
       Bypass.down(bypass)