feat: [help] 도움말 > 회계동작원리 페이지 추가

- 6탭 구성: 전체 흐름도, 일상 업무, 월간 업무, 세금/부가세, 정산/결산, 메뉴 맵
- AccountingGuideController + HX-Redirect 패턴 적용
- 중소기업 회계담당자를 위한 SAM 재무/회계 가이드

routes/web.php

@@ -15,6 +15,8 @@
 use App\Http\Controllers\CategoryController;
 use App\Http\Controllers\CategorySyncController;
 use App\Http\Controllers\ChinaTech\BigTechController;
+use App\Http\Controllers\ChinaTech\ChinaAiController;
+use App\Http\Controllers\Help\AccountingGuideController;
 use App\Http\Controllers\ClaudeCode\CoworkController as ClaudeCodeCoworkController;
 use App\Http\Controllers\ClaudeCode\NewsController as ClaudeCodeNewsController;
 use App\Http\Controllers\ClaudeCode\PricingController as ClaudeCodePricingController;
@@ -851,6 +853,15 @@
         Route::get('/big-tech', [BigTechController::class, 'index'])->name('big-tech.index');
     });
 
+    /*
+    |--------------------------------------------------------------------------
+    | 도움말 Routes
+    |--------------------------------------------------------------------------
+    */
+    Route::prefix('help')->name('help.')->group(function () {
+        Route::get('/accounting', [AccountingGuideController::class, 'index'])->name('accounting.index');
+    });
+
     /*
     |--------------------------------------------------------------------------
     | 추가기능 Routes