Phase 7 dashboard widgets, Gitea CI, and branded landing page (T7.1)

- BookingsTodayWidget, RecentBookingsTableWidget (Booking module) and
  RevenueChartWidget, PaymentFailureRateWidget (Payment module) dashboard
  widgets, auto-registered via each plugin's existing discoverWidgets().
- .gitea/workflows/tests.yml: Postgres-backed Pest run on push/PR.
- Landing page (resources/views/welcome.blade.php) now shows the Famous
  Linnyone4 EV logo with a single admin login link, and the Filament admin
  panel uses the same logo as its brand logo.

app-modules/payment/tests/Feature/PaymentFailureRateWidgetTest.php

@@ -0,0 +1,22 @@
+<?php
+
+use App\Models\User;
+use Livewire\Livewire;
+use Modules\Payment\Filament\Widgets\PaymentFailureRateWidget;
+use Modules\Payment\Models\Payment;
+
+test('it computes the failure rate among resolved payments in the last 30 days', function () {
+    $this->actingAs(User::factory()->create());
+
+    Payment::factory()->completed()->create(['initiated_at' => today()]);
+    Payment::factory()->completed()->create(['initiated_at' => today()]);
+    Payment::factory()->completed()->create(['initiated_at' => today()]);
+    Payment::factory()->failed()->create(['initiated_at' => today()]);
+    Payment::factory()->create(['initiated_at' => today()]); // pending, excluded from resolved total
+    Payment::factory()->failed()->create(['initiated_at' => today()->subDays(40)]); // outside window
+
+    Livewire::test(PaymentFailureRateWidget::class)
+        ->assertOk()
+        ->assertSee('25%')
+        ->assertSee('1 failed of 4 resolved (last 30 days)');
+});