Add OTA package upload functionality and UI enhancements

- Introduced a new endpoint for uploading OTA packages in backend/routes/ota.py.
- Implemented file handling and MD5 checksum calculation for OTA packages.
- Updated frontend API to support OTA package uploads with a new uploadOtaPackage function.
- Enhanced the OTA management UI to include file upload options and improved layout.
- Updated requirements.txt to include boto3 for S3 interactions.
- Made various UI adjustments for better user experience and consistency.

frontend/src/layout/index.vue

@@ -9,7 +9,7 @@
     <el-container class="lux-shell-body">
       <el-aside width="220px" class="sidebar-glass">
         <div class="sidebar-logo">
-          <h2>耳机管理平台</h2>
+          <h2>Luxsin CMS</h2>
         </div>
         <el-menu
           class="lux-menu"
@@ -48,16 +48,23 @@
 
       <el-container class="lux-right-col">
         <el-header class="lux-header">
-          <div class="lux-header-title">耳机品牌与型号管理系统</div>
-          <div class="header-right">
-            <el-button type="primary" size="small" class="logout-btn" @click="handleLogout">
-              退出登录
-            </el-button>
-          </div>
+          <el-button
+            circle
+            type="primary"
+            class="lux-header-power-btn"
+            title="退出登录"
+            aria-label="退出登录"
+            @click="handleLogout"
+          >
+            <el-icon :size="18"><SwitchButton /></el-icon>
+          </el-button>
         </el-header>
         <el-main class="lux-main">
           <router-view />
         </el-main>
+        <el-footer class="lux-footer" height="auto">
+          <span class="lux-footer-copy">&copy;Powered By EafonYang</span>
+        </el-footer>
       </el-container>
     </el-container>
   </div>
@@ -67,7 +74,7 @@
 import { computed } from 'vue'
 import { useRoute, useRouter } from 'vue-router'
 import { ElMessage } from 'element-plus'
-import { Headset, Collection, List, Upload, Document } from '@element-plus/icons-vue'
+import { Headset, Collection, List, Upload, Document, SwitchButton } from '@element-plus/icons-vue'
 import { clearToken } from '@/utils/auth'
 
 const route = useRoute()
@@ -85,14 +92,8 @@ const handleLogout = () => {
 .lux-right-col {
   flex: 1;
   min-width: 0;
-}
-
-.header-right {
-  flex-shrink: 0;
-}
-
-.logout-btn {
-  color: #ffffff !important;
-  font-weight: 600;
+  min-height: 0;
+  display: flex;
+  flex-direction: column;
 }
 </style>