fix(portal): scope the per-instance maintenance badge to that instance's host

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app/Livewire/Cloud.php

@@ -18,10 +18,14 @@ class Cloud extends Component
         $locale = app()->getLocale();
         $growth = [180, 188, 195, 199, 204, 210, 214, 219, 223, 228, 231, 235];
 
-        // Maintenance affecting THIS customer's instance host — shown as a badge
-        // on the instance itself, not just as a global banner.
+        // Maintenance affecting THE DISPLAYED instance's host — scoped to that one
+        // instance so a customer with several instances never sees another
+        // instance's window on this card.
         $customer = $this->customer();
-        $maintenance = $customer ? MaintenanceWindow::bannerFor($customer)->first() : null;
+        $shown = $customer?->instances()
+            ->whereIn('status', ['active', 'provisioning', 'cancellation_scheduled'])
+            ->latest('id')->first();
+        $maintenance = MaintenanceWindow::forInstance($shown)->first();
 
         return view('livewire.cloud', [
             'instance' => [

app/Models/MaintenanceWindow.php

@@ -82,6 +82,26 @@ class MaintenanceWindow extends Model
             ->get();
     }
 
+    /**
+     * Scheduled windows within the display horizon that affect ONE instance's
+     * host — for a per-instance badge, so a customer with several instances
+     * never sees another instance's maintenance on this card.
+     */
+    public static function forInstance(?Instance $instance): Collection
+    {
+        if ($instance === null || $instance->host_id === null) {
+            return collect();
+        }
+
+        return self::query()
+            ->where('state', 'scheduled')
+            ->where('ends_at', '>=', now())
+            ->where('starts_at', '<=', now()->addHours(self::DISPLAY_HOURS))
+            ->whereHas('hosts', fn (Builder $q) => $q->whereKey($instance->host_id))
+            ->orderBy('starts_at')
+            ->get();
+    }
+
     /**
      * Scheduled windows to show a given customer right now: within the display
      * horizon (72 h before start until the end) and touching one of the

tests/Feature/Admin/MaintenanceTest.php

@@ -65,6 +65,22 @@ it('emails a cancellation to customers who were announced', function () {
     Mail::assertQueued(\App\Mail\MaintenanceCancelledMail::class, 1);
 });
 
+it('scopes the per-instance badge to that instance host', function () {
+    $hostA = Host::factory()->active()->create();
+    $hostB = Host::factory()->active()->create();
+    $customer = Customer::factory()->create();
+    $instA = Instance::factory()->create(['customer_id' => $customer->id, 'host_id' => $hostA->id, 'status' => 'active']);
+    $instB = Instance::factory()->create(['customer_id' => $customer->id, 'host_id' => $hostB->id, 'status' => 'active']);
+
+    // A window on host A only.
+    $window = MaintenanceWindow::factory()->scheduled()->create();
+    $window->hosts()->attach($hostA->id);
+
+    expect(MaintenanceWindow::forInstance($instA))->toHaveCount(1)
+        ->and(MaintenanceWindow::forInstance($instB))->toHaveCount(0)   // not another instance's window
+        ->and(MaintenanceWindow::bannerFor($customer))->toHaveCount(1); // customer-level banner still shows
+});
+
 it('requires a host to publish', function () {
     Livewire::actingAs(operator('Owner'))->test(Maintenance::class)
         ->set('title', 'X')