feat(MNG): 채번 규칙 관리 기능 추가

- NumberingRule 모델, 서비스, 컨트롤러 추가
- API/Blade 라우트 등록
- CRUD + 미리보기 기능

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/Http/Controllers/NumberingRuleController.php

@@ -0,0 +1,51 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Models\NumberingRule;
+use App\Services\NumberingRuleService;
+use Illuminate\Http\Request;
+use Illuminate\View\View;
+
+class NumberingRuleController extends Controller
+{
+    public function __construct(
+        private readonly NumberingRuleService $numberingRuleService
+    ) {}
+
+    public function index(Request $request): View
+    {
+        return view('numbering.index', [
+            'documentTypes' => NumberingRule::documentTypes(),
+        ]);
+    }
+
+    public function create(): View
+    {
+        $usedTypes = $this->numberingRuleService->getUsedDocumentTypes();
+
+        return view('numbering.create', [
+            'documentTypes' => NumberingRule::documentTypes(),
+            'resetPeriods' => NumberingRule::resetPeriods(),
+            'usedDocumentTypes' => $usedTypes,
+        ]);
+    }
+
+    public function edit(int $id): View
+    {
+        $rule = $this->numberingRuleService->getRule($id);
+
+        if (! $rule) {
+            abort(404, '채번 규칙을 찾을 수 없습니다.');
+        }
+
+        $usedTypes = $this->numberingRuleService->getUsedDocumentTypes($id);
+
+        return view('numbering.edit', [
+            'rule' => $rule,
+            'documentTypes' => NumberingRule::documentTypes(),
+            'resetPeriods' => NumberingRule::resetPeriods(),
+            'usedDocumentTypes' => $usedTypes,
+        ]);
+    }
+}