feat: [claude-code] 활용방안 PPTX 다운로드 기능 추가

- UsagePlanController에 download 메서드 추가
- 라우트에 /usage-plan/download 추가
- 뷰 헤더에 PPTX 다운로드 버튼 추가
- 7장 슬라이드 PPTX 파일 배치

app/Http/Controllers/ClaudeCode/UsagePlanController.php

@@ -6,6 +6,7 @@
 use Illuminate\Http\Request;
 use Illuminate\Http\Response;
 use Illuminate\View\View;
+use Symfony\Component\HttpFoundation\BinaryFileResponse;
 
 class UsagePlanController extends Controller
 {
@@ -17,4 +18,12 @@ public function index(Request $request): View|Response
 
         return view('claude-code.usage-plan.index');
     }
+
+    public function download(): BinaryFileResponse
+    {
+        $path = public_path('downloads/sam-usage-plan.pptx');
+        abort_unless(file_exists($path), 404, 'PPTX 파일을 찾을 수 없습니다.');
+
+        return response()->download($path, 'SAM_활용방안.pptx');
+    }
 }

resources/views/claude-code/usage-plan/index.blade.php

@@ -40,8 +40,14 @@
             <h1 class="text-2xl font-bold text-gray-900">SAM 활용방안</h1>
             <p class="mt-1 text-sm text-gray-500">AI 자동화로 중소 제조업을 혁신하다 | (주)코드브릿지엑스의 비전</p>
         </div>
-        <div class="flex items-center gap-2">
+        <div class="flex items-center gap-3">
             <span class="text-xs text-gray-400">CodeBridgeX | 2026.03</span>
+            <a href="{{ route('claude-code.usage-plan.download') }}"
+               class="inline-flex items-center gap-1.5 px-3 py-1.5 text-sm font-medium text-white bg-indigo-600 rounded-lg hover:bg-indigo-700 transition-colors"
+               title="PPTX 다운로드">
+                <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 10v6m0 0l-3-3m3 3l3-3m2 8H7a2 2 0 01-2-2V5a2 2 0 012-2h5.586a1 1 0 01.707.293l5.414 5.414a1 1 0 01.293.707V19a2 2 0 01-2 2z"/></svg>
+                PPTX
+            </a>
         </div>
     </div>
 

routes/web.php

@@ -733,6 +733,7 @@
         Route::get('/cowork', [ClaudeCodeCoworkController::class, 'index'])->name('cowork.index');
 
         Route::get('/usage-plan', [ClaudeCodeUsagePlanController::class, 'index'])->name('usage-plan.index');
+        Route::get('/usage-plan/download', [ClaudeCodeUsagePlanController::class, 'download'])->name('usage-plan.download');
     });
 
     /*