feat: schedule sandbox:sync to run hourly

Registers the sandbox:sync Artisan command in the CoreServiceProvider
scheduler so that production users and companies are periodically
mirrored into the sandbox database without any manual intervention.

Hourly cadence is chosen as a sensible default:
- New users/companies created in production become available in sandbox
  within at most one hour, keeping the sandbox reasonably fresh.
- The command is lightweight (upserts only; no heavy data transforms) so
  running it every hour does not impose meaningful DB load.
- withoutOverlapping() ensures a long-running sync cannot queue up
  multiple concurrent instances if the scheduler fires while a previous
  run is still in progress.

This complements the on-demand sync added to ApiCredentialController
(which handles the immediate FK-constraint case at key-creation time)
by ensuring the sandbox stays broadly consistent with production over
time for all other sandbox operations.

Author: Ronald A Richardson

src/Providers/CoreServiceProvider.php

@@ -165,6 +165,13 @@ public function boot()
             $schedule->command('purge:scheduled-task-logs --force --no-interaction --days 1')->twiceDaily(1, 13);
             $schedule->command('telemetry:ping')->daily();
             $schedule->job(new \Fleetbase\Jobs\MaterializeSchedulesJob())->dailyAt('01:00')->name('materialize-schedules')->withoutOverlapping();
+            // Keep sandbox users/companies in sync with production so that
+            // test-mode API key creation (and other sandbox operations) never
+            // fail due to missing foreign-key referenced rows. Hourly cadence
+            // is a good balance: frequent enough that new users/companies are
+            // available in sandbox within an hour of being created in
+            // production, but infrequent enough to avoid unnecessary DB load.
+            $schedule->command('sandbox:sync')->hourly()->name('sandbox-sync')->withoutOverlapping();
         });
         $this->registerObservers();
         $this->registerExpansionsFrom();