feat: [rd] AI 견적 엔진 Phase 1 구현

- 모델 3개: AiQuotationModule, AiQuotation, AiQuotationItem
- AiQuotationService: Gemini/Claude 2단계 AI 파이프라인
- RdController: R&D 대시보드 + AI 견적 Blade 화면
- AiQuotationController: AI 견적 API (생성/목록/상세/재분석)
- Blade 뷰: 대시보드, 목록, 생성, 상세, HTMX 테이블
- 라우트: /rd/* (web), /admin/rd/* (api)

app/Http/Controllers/RdController.php

@@ -0,0 +1,74 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Models\Rd\AiQuotation;
+use App\Services\Rd\AiQuotationService;
+use Illuminate\Http\Request;
+use Illuminate\View\View;
+
+class RdController extends Controller
+{
+    public function __construct(
+        private readonly AiQuotationService $quotationService
+    ) {}
+
+    /**
+     * R&D 대시보드
+     */
+    public function index(Request $request): View|\Illuminate\Http\Response
+    {
+        if ($request->header('HX-Request')) {
+            return response('', 200)->header('HX-Redirect', route('rd.index'));
+        }
+
+        $dashboard = $this->quotationService->getDashboardStats();
+        $statuses = AiQuotation::getStatuses();
+
+        return view('rd.index', compact('dashboard', 'statuses'));
+    }
+
+    /**
+     * AI 견적 목록
+     */
+    public function quotations(Request $request): View|\Illuminate\Http\Response
+    {
+        if ($request->header('HX-Request')) {
+            return response('', 200)->header('HX-Redirect', route('rd.ai-quotation.index'));
+        }
+
+        $statuses = AiQuotation::getStatuses();
+
+        return view('rd.ai-quotation.index', compact('statuses'));
+    }
+
+    /**
+     * AI 견적 생성 폼
+     */
+    public function createQuotation(Request $request): View|\Illuminate\Http\Response
+    {
+        if ($request->header('HX-Request')) {
+            return response('', 200)->header('HX-Redirect', route('rd.ai-quotation.create'));
+        }
+
+        return view('rd.ai-quotation.create');
+    }
+
+    /**
+     * AI 견적 상세
+     */
+    public function showQuotation(Request $request, int $id): View|\Illuminate\Http\Response
+    {
+        if ($request->header('HX-Request')) {
+            return response('', 200)->header('HX-Redirect', route('rd.ai-quotation.show', $id));
+        }
+
+        $quotation = $this->quotationService->getById($id);
+
+        if (! $quotation) {
+            abort(404, 'AI 견적을 찾을 수 없습니다.');
+        }
+
+        return view('rd.ai-quotation.show', compact('quotation'));
+    }
+}