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)

routes/api.php

@@ -602,6 +602,20 @@
         });
     });
 
+    /*
+    |--------------------------------------------------------------------------
+    | 연구개발 API
+    |--------------------------------------------------------------------------
+    */
+    Route::prefix('rd')->name('rd.')->group(function () {
+        Route::prefix('ai-quotation')->name('ai-quotation.')->group(function () {
+            Route::get('/', [\App\Http\Controllers\Api\Admin\Rd\AiQuotationController::class, 'index'])->name('index');
+            Route::post('/', [\App\Http\Controllers\Api\Admin\Rd\AiQuotationController::class, 'store'])->name('store');
+            Route::get('/{id}', [\App\Http\Controllers\Api\Admin\Rd\AiQuotationController::class, 'show'])->name('show');
+            Route::post('/{id}/analyze', [\App\Http\Controllers\Api\Admin\Rd\AiQuotationController::class, 'analyze'])->name('analyze');
+        });
+    });
+
     /*
     |--------------------------------------------------------------------------
     | 일일 스크럼 API