feat: 重构前端项目结构并添加组件样式

- 将视图组件重构为目录结构，提升模块化
- 引入 Phosphor Icons 图标库和 Less 预处理器
- 新增全局主题样式和组件专用样式文件
- 实现登录页面、布局组件及多个功能视图
- 添加数据管理、统计看板等核心功能界面

cwd-admin/src/styles/components/data.less

@@ -0,0 +1,215 @@
+.page {
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+  max-width: 600px;
+  /* Increased width slightly */
+}
+
+.page-title {
+  margin: 0;
+  font-size: 18px;
+  color: var(--text-primary);
+}
+
+.card {
+  background-color: var(--bg-card);
+  border-radius: 6px;
+  border: 1px solid var(--border-color);
+  padding: 16px 18px;
+  margin-bottom: 0.5em;
+  /* Reduced spacing */
+}
+
+.card-title {
+  margin: 0 0 8px;
+  font-size: 15px;
+  color: var(--text-primary);
+  font-weight: 600;
+}
+
+.card-desc {
+  font-size: 13px;
+  color: var(--text-secondary);
+  margin: 0 0 16px;
+}
+
+.action-row {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  margin-top: 8px;
+}
+
+.action-label {
+  font-size: 13px;
+  color: var(--text-primary);
+  min-width: 40px;
+}
+
+.card-button {
+  padding: 6px 14px;
+  border-radius: 4px;
+  border: 1px solid transparent;
+  background-color: var(--primary-color);
+  color: var(--text-inverse);
+  font-size: 13px;
+  cursor: pointer;
+  transition: all 0.2s;
+}
+
+.card-button:hover {
+  opacity: 0.9;
+}
+
+.card-button:disabled {
+  opacity: 0.6;
+  cursor: not-allowed;
+}
+
+.card-button.secondary {
+  background-color: var(--bg-input);
+  border-color: var(--border-color);
+  color: var(--text-primary);
+}
+
+.card-button.secondary:hover {
+  background-color: var(--bg-sider);
+}
+
+.card-button.success {
+  background-color: var(--color-success);
+}
+
+.form-select {
+  padding: 6px 8px;
+  border: 1px solid var(--border-color);
+  border-radius: 4px;
+  font-size: 13px;
+  color: var(--text-primary);
+  background-color: var(--bg-input);
+  outline: none;
+}
+
+/* Toast & Log styles same as before */
+.toast {
+  position: fixed;
+  top: 20px;
+  left: 50%;
+  transform: translateX(-50%);
+  min-width: 220px;
+  padding: 10px 14px;
+  border-radius: 6px;
+  font-size: 13px;
+  box-shadow: var(--shadow-card);
+  z-index: 1000;
+}
+
+.toast-success {
+  background-color: var(--color-success);
+  color: var(--text-inverse);
+}
+
+.toast-error {
+  background-color: var(--color-danger);
+  color: var(--text-inverse);
+}
+
+.log-container {
+  margin-top: 16px;
+  padding: 12px;
+  background-color: var(--bg-sider);
+  border-radius: 6px;
+  border: 1px solid var(--border-color);
+}
+
+.log-title {
+  font-size: 13px;
+  font-weight: 600;
+  margin-bottom: 8px;
+}
+
+.log-list {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+  max-height: 200px;
+  overflow-y: auto;
+}
+
+.log-item {
+  font-size: 12px;
+  font-family: monospace;
+  color: var(--text-secondary);
+}
+
+/* Modal Styles */
+.modal-overlay {
+  position: fixed;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  background-color: rgba(0, 0, 0, 0.5);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  z-index: 2000;
+}
+
+.modal {
+  background-color: var(--bg-card);
+  border-radius: 6px;
+  width: 400px;
+  max-width: 90%;
+  padding: 20px;
+  display: flex;
+  flex-direction: column;
+  gap: 16px;
+}
+
+.modal-title {
+  margin: 0;
+  font-size: 16px;
+  font-weight: 600;
+}
+
+.modal-desc {
+  margin: 0;
+  font-size: 14px;
+  color: var(--text-secondary);
+  line-height: 1.5;
+}
+
+.modal-actions {
+  display: flex;
+  justify-content: flex-end;
+  gap: 10px;
+}
+
+.modal-btn {
+  padding: 8px 16px;
+  border-radius: 4px;
+  font-size: 14px;
+  cursor: pointer;
+  border: none;
+}
+
+.modal-btn.primary {
+  background-color: var(--primary-color);
+  color: white;
+}
+
+.modal-btn.secondary {
+  background-color: var(--bg-sider);
+  color: var(--text-primary);
+  border: 1px solid var(--border-color);
+}
+
+.form-input {
+  padding: 8px;
+  border: 1px solid var(--border-color);
+  border-radius: 4px;
+  width: 100%;
+  box-sizing: border-box;
+}