feat: 后端添加获取空闲实验板，继续修改前端界面使其更加合理

src/views/HomeView.vue

@@ -34,55 +34,9 @@
               to="/project"
               class="btn btn-primary text-base-100 shadow-lg transform transition-all duration-300 hover:scale-105 hover:shadow-xl hover:-translate-y-1"
             >
-              <svg
-                xmlns="http://www.w3.org/2000/svg"
-                class="h-5 w-5 mr-2"
-                viewBox="0 0 24 24"
-                fill="none"
-                stroke="currentColor"
-                stroke-width="2"
-              >
-                <path d="M2 3h6a4 4 0 0 1 4 4v14a3 3 0 0 0-3-3H2z"></path>
-                <path d="M22 3h-6a4 4 0 0 0-4 4v14a3 3 0 0 1 3-3h7z"></path>
-              </svg>
+              <BookOpen class="h-5 w-5 mr-2" />
               进入工程界面
             </router-link>
-
-            <router-link
-              to="/login"
-              class="btn btn-secondary text-base-100 shadow-lg transform transition-all duration-300 hover:scale-105 hover:shadow-xl hover:-translate-y-1"
-            >
-              <svg
-                xmlns="http://www.w3.org/2000/svg"
-                class="h-5 w-5 mr-2"
-                viewBox="0 0 24 24"
-                fill="none"
-                stroke="currentColor"
-                stroke-width="2"
-              >
-                <rect x="3" y="11" width="18" height="11" rx="2" ry="2"></rect>
-                <path d="M7 11V7a5 5 0 0 1 10 0v4"></path>
-              </svg>
-              登录
-            </router-link>
-
-            <router-link
-              to="/user"
-              class="btn btn-accent text-base-100 shadow-lg transform transition-all duration-300 hover:scale-105 hover:shadow-xl hover:-translate-y-1"
-            >
-              <svg
-                xmlns="http://www.w3.org/2000/svg"
-                class="h-5 w-5 mr-2"
-                viewBox="0 0 24 24"
-                fill="none"
-                stroke="currentColor"
-                stroke-width="2"
-              >
-                <path d="M20 21v-2a4 4 0 0 0-4-4H8a4 4 0 0 0-4 4v2"></path>
-                <circle cx="12" cy="7" r="4"></circle>
-              </svg>
-              用户中心
-            </router-link>
           </div>
           <div
             class="mt-8 p-4 bg-base-300 rounded-lg shadow-inner opacity-80 transition-all duration-300 hover:opacity-100 hover:shadow-md"
@@ -101,6 +55,7 @@
 <script lang="ts" setup>
 import "@/router";
 import TutorialCarousel from "@/components/TutorialCarousel.vue";
+import { BookOpen } from "lucide-vue-next";
 </script>
 
 <style scoped lang="postcss">