feat: complete email infrastructure with queue, templates, logging, and API

Adds the full transactional email system:
- Redis queue (QUEUE_CONNECTION=redis), SES config in .env.example
- 3 migrations: organisation_email_settings, organisation_email_templates, email_logs
- EmailTemplateType and EmailLogStatus enums with Dutch defaults
- EmailService as central entry point for all email sending
- SendTransactionalEmail queued job with retries and idempotency
- TransactionalMail mailable with responsive HTML + plain text templates
- Organisation-level branding (colors, logo, footer, reply-to)
- Per-type template overrides with {variable} substitution
- Email log with filtering by status, type, date range, recipient
- Preview and send-test endpoints for template management
- API endpoints: email-settings, email-templates (CRUD), email-logs (read-only)
- Integrated into existing flows: invitations, password reset, email
  verification, registration approval/rejection
- 37 new tests across 4 test files, all existing tests updated

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

api/app/Http/Controllers/Api/V1/EmailLogController.php

@@ -0,0 +1,63 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Controllers\Api\V1;
+
+use App\Enums\EmailLogStatus;
+use App\Enums\EmailTemplateType;
+use App\Http\Controllers\Controller;
+use App\Http\Resources\Api\V1\EmailLogResource;
+use App\Models\EmailLog;
+use App\Models\Organisation;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Gate;
+
+final class EmailLogController extends Controller
+{
+    public function index(Request $request, Organisation $organisation): JsonResponse
+    {
+        Gate::authorize('update', $organisation);
+
+        $query = EmailLog::where('organisation_id', $organisation->id)
+            ->with('triggeredBy')
+            ->orderByDesc('created_at');
+
+        if ($search = $request->query('search')) {
+            $query->where('recipient_email', 'like', '%' . $search . '%');
+        }
+
+        if ($status = $request->query('status')) {
+            if (EmailLogStatus::tryFrom($status)) {
+                $query->where('status', $status);
+            }
+        }
+
+        if ($templateType = $request->query('template_type')) {
+            if (EmailTemplateType::tryFrom($templateType)) {
+                $query->where('template_type', $templateType);
+            }
+        }
+
+        if ($eventId = $request->query('event_id')) {
+            $query->where('event_id', $eventId);
+        }
+
+        if ($personId = $request->query('person_id')) {
+            $query->where('person_id', $personId);
+        }
+
+        if ($from = $request->query('from')) {
+            $query->where('created_at', '>=', $from);
+        }
+
+        if ($to = $request->query('to')) {
+            $query->where('created_at', '<=', $to);
+        }
+
+        $logs = $query->paginate($request->integer('per_page', 15));
+
+        return $this->success(EmailLogResource::collection($logs)->response()->getData(true));
+    }
+}