refactor: clean up dependencies and enhance component functionality

- Removed unused dependencies related to @dnd-kit from pnpm-lock.yaml.
- Updated Vite configuration to set the base path.
- Added input styles to the main CSS file.
- Enhanced BackgroundImage component to include an overflowHidden prop for better layout control.
- Deleted the DraggableItem component as it was no longer needed.
- Updated routing to include new Publicity and Content pages, and modified navigation in Menu and NotFound components.

src/styles/input.css

@@ -0,0 +1,23 @@
+input, textarea {
+    font-size: 20px;
+    letter-spacing: 1px;
+    outline: none;
+}
+
+/* 输入框placeholder颜色 */
+input::placeholder, textarea::placeholder{
+    font-size: 20px;
+    letter-spacing: 1px;
+}
+
+/* 自定义滚动容器 - 隐藏滚动条 */
+.custom-scrollbar {
+    scrollbar-width: none; /* Firefox隐藏滚动条 */
+    -ms-overflow-style: none; /* IE和Edge隐藏滚动条 */
+    perspective: 1000px;
+}
+
+/* Webkit浏览器（Chrome, Safari等）隐藏滚动条 */
+.custom-scrollbar::-webkit-scrollbar {
+    display: none;
+}