feat(backup): enhance backup job with S3 upload handling and notifications

- Introduced a new notification class, BackupSuccessWithS3Warning, to alert users when local backups succeed but S3 uploads fail.
- Updated DatabaseBackupJob to track local backup success and handle S3 upload errors, improving error reporting and user notifications.
- Modified ScheduledDatabaseBackupExecution model to include a new s3_uploaded boolean field for tracking S3 upload status.
- Adjusted views and validation logic to reflect changes in backup execution status and S3 handling.
- Added tests to ensure the new s3_uploaded column is correctly implemented and validated.

tests/Feature/DatabaseBackupJobTest.php

@@ -0,0 +1,37 @@
+<?php
+
+use App\Models\ScheduledDatabaseBackupExecution;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\Schema;
+
+uses(RefreshDatabase::class);
+
+test('scheduled_database_backup_executions table has s3_uploaded column', function () {
+    expect(Schema::hasColumn('scheduled_database_backup_executions', 's3_uploaded'))->toBeTrue();
+});
+
+test('s3_uploaded column is nullable', function () {
+    $columns = Schema::getColumns('scheduled_database_backup_executions');
+    $s3UploadedColumn = collect($columns)->firstWhere('name', 's3_uploaded');
+
+    expect($s3UploadedColumn)->not->toBeNull();
+    expect($s3UploadedColumn['nullable'])->toBeTrue();
+});
+
+test('scheduled database backup execution model casts s3_uploaded correctly', function () {
+    $model = new ScheduledDatabaseBackupExecution;
+    $casts = $model->getCasts();
+
+    expect($casts)->toHaveKey('s3_uploaded');
+    expect($casts['s3_uploaded'])->toBe('boolean');
+});
+
+test('scheduled database backup execution model casts storage deletion fields correctly', function () {
+    $model = new ScheduledDatabaseBackupExecution;
+    $casts = $model->getCasts();
+
+    expect($casts)->toHaveKey('local_storage_deleted');
+    expect($casts['local_storage_deleted'])->toBe('boolean');
+    expect($casts)->toHaveKey('s3_storage_deleted');
+    expect($casts['s3_storage_deleted'])->toBe('boolean');
+});