fix: use simple layout for ManagedTenantsLanding to prevent Livewire update 404s

The full panel layout renders DatabaseNotifications (lazy-loaded) and
BulkOperationProgress (polling), whose Livewire update requests fail
with 404 due to persistent middleware route-binding issues on this
manually-routed page.

Switch to simple layout matching ChooseWorkspace/ChooseTenant/NoAccess
pattern — appropriate for this transitional/landing page.

Add test verifying Livewire updates succeed on managed-tenants page.

app/Filament/Pages/Workspaces/ManagedTenantsLanding.php

@@ -18,6 +18,8 @@ class ManagedTenantsLanding extends Page
 
     protected static bool $isDiscovered = false;
 
+    protected static string $layout = 'filament-panels::components.layout.simple';
+
     protected static ?string $title = 'Managed tenants';
 
     protected string $view = 'filament.pages.workspaces.managed-tenants-landing';

tests/Feature/Workspaces/ManagedTenantsLivewireUpdateTest.php

@@ -0,0 +1,75 @@
+<?php
+
+declare(strict_types=1);
+
+use App\Models\User;
+use App\Models\Workspace;
+use App\Models\WorkspaceMembership;
+use App\Support\Workspaces\WorkspaceContext;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\Http;
+
+uses(RefreshDatabase::class);
+
+beforeEach(function (): void {
+    Http::preventStrayRequests();
+});
+
+it('serves the managed-tenants page without Livewire update failures', function (): void {
+    $user = User::factory()->create();
+
+    $workspace = Workspace::factory()->create(['slug' => 'test-ws']);
+    WorkspaceMembership::factory()->create([
+        'workspace_id' => $workspace->getKey(),
+        'user_id' => $user->getKey(),
+        'role' => 'owner',
+    ]);
+
+    // 1. Load the page
+    $response = $this->actingAs($user)
+        ->withSession([WorkspaceContext::SESSION_KEY => (int) $workspace->getKey()])
+        ->get('/admin/w/'.$workspace->slug.'/managed-tenants');
+
+    $response->assertSuccessful();
+
+    $html = $response->getContent();
+
+    // 2. Extract the first Livewire component snapshot
+    preg_match('/wire:snapshot="([^"]+)"/', $html, $snapshotMatch);
+    expect($snapshotMatch)->not->toBeEmpty('No Livewire snapshot found in page HTML');
+
+    $snapshotJson = htmlspecialchars_decode($snapshotMatch[1]);
+    $snapshot = json_decode($snapshotJson, true);
+
+    expect($snapshot)->toBeArray();
+    expect($snapshot['memo']['path'] ?? null)->toBe('admin/w/test-ws/managed-tenants');
+
+    // 3. POST a Livewire update request
+    $updatePayload = [
+        'components' => [[
+            'snapshot' => $snapshotJson,
+            'updates' => new \stdClass,
+            'calls' => [],
+        ]],
+    ];
+
+    // Get the Livewire update URI path (includes hash prefix)
+    $routes = app('router')->getRoutes();
+    $updateRoute = null;
+    foreach ($routes as $route) {
+        if (str_contains($route->getName() ?? '', 'livewire.update')) {
+            $updateRoute = $route;
+            break;
+        }
+    }
+    expect($updateRoute)->not->toBeNull('Livewire update route must exist');
+
+    $updateResponse = $this->actingAs($user)
+        ->withSession([WorkspaceContext::SESSION_KEY => (int) $workspace->getKey()])
+        ->withHeaders([
+            'X-Livewire' => 'true',
+        ])
+        ->postJson('/'.$updateRoute->uri(), $updatePayload);
+
+    $updateResponse->assertSuccessful();
+});