nixos-module: add scheduler timer for artisan schedule:run

Invoice Ninja relies on Laravel's scheduler for recurring invoices,
scheduled reports, and other internal cron-driven jobs. Without a
systemd unit invoking `artisan schedule:run` periodically, the app's
dashboard reports "cron jobs are not enabled" after login.

Adds invoiceninja-scheduler.timer (every minute, matching upstream's
documented cron cadence) and its oneshot service, and extends the
automated test to assert the timer is active and schedule:run succeeds.

Note: the app's own is_scheduler_running flag only flips on a 5-minute
wall-clock boundary (app/Console/Kernel.php's everyFiveMinutes() job),
so the dashboard warning can take a few minutes to clear after boot -
confirmed working via the "Refresh Data" button in that same modal.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

CLAUDE.md

@@ -92,6 +92,10 @@ expect Nix to report the correct hash on a failed build (or use `nix-prefetch`/`
     `app.php`, and guards one-time actions (`migrate`, `db:seed`, admin account creation) behind marker files
     (`.initial-migration`, `.db-seeded`, `.admin-created`) in `dataDir`. `phpfpm-invoiceninja.service` and
     `invoiceninja-queue-worker.service` both depend on it.
+  - `invoiceninja-scheduler.timer`/`.service` run `artisan schedule:run` every minute — this is what drives
+    Invoice Ninja's own internal cron-scheduled jobs (recurring invoices, scheduled reports, etc.); without it the
+    app's dashboard reports "cron jobs are not enabled". Laravel's scheduler is just a dispatcher, so this one
+    timer is sufficient regardless of how many scheduled tasks Invoice Ninja itself defines.
   - `invoiceninja-manage` is a generated wrapper script (`invoiceninja-manage <artisan-args>`) that `cd`s into the
     package output and runs `php artisan` as the configured service user (via `sudo` if invoked as another user).
     It's added to `environment.systemPackages`, so it's the normal way to run artisan commands

nixos-module/invoiceninja.nix

@@ -623,6 +623,32 @@ in
       };
     };
 
+    systemd.services.invoiceninja-scheduler = {
+      description = "Invoice Ninja scheduled tasks (artisan schedule:run)";
+      after = [ "invoiceninja-data-setup.service" ];
+      requires = [ "phpfpm-invoiceninja.service" ];
+      # Ensure chromium is available, for any scheduled tasks that generate PDFs.
+      path = extraPrograms;
+
+      serviceConfig = {
+        Type = "oneshot";
+        ExecStart = "${invoiceninja-manage}/bin/invoiceninja-manage schedule:run";
+        User = user;
+        Group = group;
+        StateDirectory = lib.mkIf (cfg.dataDir == "/var/lib/invoiceninja") "invoiceninja";
+      };
+    };
+
+    systemd.timers.invoiceninja-scheduler = {
+      description = "Run Invoice Ninja's scheduled tasks every minute";
+      wantedBy = [ "timers.target" ];
+      timerConfig = {
+        OnCalendar = "minutely";
+        Persistent = true;
+        Unit = "invoiceninja-scheduler.service";
+      };
+    };
+
     systemd.services.invoiceninja-data-setup = {
       description = "Invoice Ninja setup: migrations, environment file update, cache reload, data changes";
       wantedBy = [ "multi-user.target" ];

tests/nixos-test.nix

@@ -52,6 +52,11 @@ pkgs.testers.nixosTest {
     with subtest("invoiceninja-manage wrapper can run artisan commands"):
         machine.succeed("invoiceninja-manage migrate:status")
 
+    with subtest("scheduler timer is enabled and schedule:run succeeds"):
+        # Without this, the app's dashboard reports "cron jobs are not enabled".
+        machine.succeed("systemctl is-active invoiceninja-scheduler.timer")
+        machine.succeed("systemctl start --wait invoiceninja-scheduler.service")
+
     with subtest("admin account can log in via the API"):
         login_response = machine.succeed(
             "curl -sf -X POST http://localhost/api/v1/login "