refactor: 사이트 타이틀 '업무관리프로그램'으로 통일

- 로그인 화면: 이메일 로그인 탭, 최근 로그인 내역 제거
- 로그인 화면: 비밀번호 로그인만 남김
- 사이트 타이틀 '주간업무보고' → '업무관리프로그램'으로 변경
- 이메일 발송 제목/본문 문구 통일

frontend/login.vue

@@ -3,46 +3,12 @@
     <div class="login-card">
       <div class="text-center mb-4">
         <i class="bi bi-clipboard-check display-1 text-primary"></i>
-        <h2 class="mt-3">주간업무보고</h2>
+        <h2 class="mt-3">업무관리프로그램</h2>
         <p class="text-muted">로그인하여 시작하세요</p>
       </div>
 
-      <!-- 로그인 탭 -->
-      <ul class="nav nav-tabs mb-3">
-        <li class="nav-item">
-          <button class="nav-link" :class="{ active: loginMode === 'email' }" @click="loginMode = 'email'">
-            <i class="bi bi-envelope me-1"></i>이메일 로그인
-          </button>
-        </li>
-        <li class="nav-item">
-          <button class="nav-link" :class="{ active: loginMode === 'password' }" @click="loginMode = 'password'">
-            <i class="bi bi-key me-1"></i>비밀번호 로그인
-          </button>
-        </li>
-      </ul>
-
-      <!-- 이메일+이름 로그인 폼 -->
-      <div v-if="loginMode === 'email'" class="card mb-4">
-        <div class="card-body">
-          <form @submit.prevent="handleEmailLogin">
-            <div class="mb-3">
-              <label class="form-label">Gmail 주소</label>
-              <input type="email" class="form-control" v-model="email" placeholder="example@gmail.com" required />
-            </div>
-            <div class="mb-3">
-              <label class="form-label">이름</label>
-              <input type="text" class="form-control" v-model="name" placeholder="홍길동" required />
-            </div>
-            <button type="submit" class="btn btn-primary w-100" :disabled="isSubmitting">
-              <span v-if="isSubmitting"><span class="spinner-border spinner-border-sm me-2"></span>로그인 중...</span>
-              <span v-else><i class="bi bi-box-arrow-in-right me-2"></i>로그인</span>
-            </button>
-          </form>
-        </div>
-      </div>
-
       <!-- 비밀번호 로그인 폼 -->
-      <div v-if="loginMode === 'password'" class="card mb-4">
+      <div class="card mb-4">
         <div class="card-body">
           <form @submit.prevent="handlePasswordLogin">
             <div class="mb-3">
@@ -82,25 +48,6 @@
         </div>
       </div>
 
-      <!-- 기존 사용자 선택 -->
-      <div class="card" v-if="recentUsers.length > 0 && loginMode === 'email'">
-        <div class="card-header">
-          <i class="bi bi-clock-history me-2"></i>최근 로그인 사용자
-        </div>
-        <div class="list-group list-group-flush">
-          <button v-for="user in recentUsers" :key="user.employeeId"
-            class="list-group-item list-group-item-action d-flex justify-content-between align-items-center"
-            @click="handleSelectUser(user.employeeId)" :disabled="isSubmitting">
-            <div>
-              <i class="bi bi-person-circle me-2 text-primary"></i>
-              <strong>{{ user.employeeName }}</strong>
-              <small class="text-muted ms-2">{{ user.employeeEmail }}</small>
-            </div>
-            <i class="bi bi-chevron-right"></i>
-          </button>
-        </div>
-      </div>
-
       <!-- 에러 메시지 -->
       <div class="alert alert-danger mt-3" v-if="errorMessage">
         <i class="bi bi-exclamation-triangle me-2"></i>{{ errorMessage }}
@@ -112,36 +59,12 @@
 <script setup lang="ts">
 definePageMeta({ layout: false })
 
-const { login, selectUser, getRecentUsers } = useAuth()
 const router = useRouter()
 
-const loginMode = ref<'email' | 'password'>('email')
 const email = ref('')
-const name = ref('')
 const password = ref('')
 const isSubmitting = ref(false)
 const errorMessage = ref('')
-const recentUsers = ref<any[]>([])
-
-onMounted(async () => {
-  try {
-    recentUsers.value = await getRecentUsers()
-  } catch (e) {}
-})
-
-async function handleEmailLogin() {
-  if (!email.value || !name.value) return
-  isSubmitting.value = true
-  errorMessage.value = ''
-  try {
-    await login(email.value, name.value)
-    router.push('/')
-  } catch (e: any) {
-    errorMessage.value = e.message || '로그인에 실패했습니다.'
-  } finally {
-    isSubmitting.value = false
-  }
-}
 
 async function handlePasswordLogin() {
   if (!email.value || !password.value) return
@@ -159,19 +82,6 @@ async function handlePasswordLogin() {
     isSubmitting.value = false
   }
 }
-
-async function handleSelectUser(employeeId: number) {
-  isSubmitting.value = true
-  errorMessage.value = ''
-  try {
-    await selectUser(employeeId)
-    router.push('/')
-  } catch (e: any) {
-    errorMessage.value = e.message || '로그인에 실패했습니다.'
-  } finally {
-    isSubmitting.value = false
-  }
-}
 </script>
 
 <style scoped>
@@ -191,6 +101,4 @@ async function handleSelectUser(employeeId: number) {
   max-width: 450px;
   box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
 }
-.nav-tabs .nav-link { cursor: pointer; }
-.list-group-item-action:hover { background-color: #f8f9fa; }
 </style>