feat: add ClickHouse backups and cloud ops tools

Enable scheduled ClickHouse backups across the job, API, and UI, and
guard unsupported database types via isBackupSolutionAvailable().
Convert Stripe subscription sync from a job to an action with clearer
discrepancy resolution, and add cloud:export-users plus
cloud:cleanup-unverified-users with tests.

app/Models/Team.php

@@ -219,13 +219,15 @@ class Team extends Model implements SendsDiscord, SendsEmail, SendsPushover, Sen
             $this->getNotificationSettings('webhook')?->isEnabled();
     }
 
-    public function subscriptionEnded()
+    public function subscriptionEnded(?Subscription $subscription = null): void
     {
-        if (! $this->subscription) {
+        $subscription ??= $this->subscription;
+
+        if (! $subscription) {
             return;
         }
 
-        $this->subscription->update([
+        $subscription->update([
             'stripe_subscription_id' => null,
             'stripe_cancel_at_period_end' => false,
             'stripe_invoice_paid' => false,