fix(WEB): 로그인/회원가입 페이지 로고를 sam-logo.png로 변경

- LoginPage.tsx: 하드코딩된 "S" 텍스트 → Image 컴포넌트로 변경
- SignupPage.tsx: 하드코딩된 "S" 텍스트 → Image 컴포넌트로 변경
- AuthenticatedLayout과 동일한 /sam-logo.png 사용

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/app/[locale]/(protected)/construction/project/management/[id]/page.tsx

@@ -1,17 +0,0 @@
-'use client';
-
-import { use } from 'react';
-import ProjectDetailClient from '@/components/business/construction/management/ProjectDetailClient';
-
-interface PageProps {
-  params: Promise<{
-    id: string;
-    locale: string;
-  }>;
-}
-
-export default function ProjectDetailPage({ params }: PageProps) {
-  const { id } = use(params);
-
-  return <ProjectDetailClient projectId={id} />;
-}