feat: Implement Fast Request feature with file upload and request management

app/Services/Document/CaseService.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace App\Services\Document;
+
+use App\Enums\DocumentStatusEnum;
+use App\Models\Document;
+use App\Models\User;
+use Illuminate\Database\Eloquent\Builder;
+
+class CaseService
+{
+    public function pendingForUser(User $user): Builder
+    {
+        return Document::with(['pet', 'requester'])
+            ->whereIn('status', [
+                DocumentStatusEnum::Registered->value,
+                DocumentStatusEnum::InProgress->value,
+            ])
+            ->where(function ($query) use ($user) {
+                $query->where('requester_id', $user->id)
+                    ->orWhereHas('assignments', function ($assignmentQuery) use ($user) {
+                        $assignmentQuery->where('user_id', $user->id);
+                    });
+            })
+            ->latest('submitted_at');
+    }
+}