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.

tests/Feature/Subscription/TeamSubscriptionEndedTest.php

@@ -1,5 +1,6 @@
 <?php
 
+use App\Models\Subscription;
 use App\Models\Team;
 use Illuminate\Foundation\Testing\RefreshDatabase;
 
@@ -14,3 +15,24 @@ test('subscriptionEnded does not throw when team has no subscription', function
     // If we reach here, no exception was thrown
     expect(true)->toBeTrue();
 });
+
+test('subscriptionEnded updates the exact subscription when duplicate rows exist', function () {
+    $team = Team::factory()->create();
+    $otherSubscription = Subscription::create([
+        'team_id' => $team->id,
+        'stripe_subscription_id' => 'sub_other',
+        'stripe_invoice_paid' => true,
+    ]);
+    $subscriptionToEnd = Subscription::create([
+        'team_id' => $team->id,
+        'stripe_subscription_id' => 'sub_stale',
+        'stripe_invoice_paid' => true,
+    ]);
+
+    $team->subscriptionEnded($subscriptionToEnd);
+
+    expect($subscriptionToEnd->fresh()->stripe_subscription_id)->toBeNull()
+        ->and($subscriptionToEnd->fresh()->stripe_invoice_paid)->toBeFalsy()
+        ->and($otherSubscription->fresh()->stripe_subscription_id)->toBe('sub_other')
+        ->and($otherSubscription->fresh()->stripe_invoice_paid)->toBeTruthy();
+});