feat: refactor nxmesh-frontend to use React Router with new layout components

- Updated package.json to replace Vite with React Router for development and build scripts.
- Added react-router.config.ts for configuration settings.
- Created a new App component with a dashboard layout including header, sidebar, and footer.
- Enhanced App.css with a professional theme and responsive design.
- Removed old App.tsx and index.css files.
- Introduced RootLayout component to encapsulate layout structure.
- Developed Header, Footer, and Sidebar components for consistent layout.
- Implemented routes for home and dashboard with key metrics and activity sections.
- Updated vite.config.ts to integrate React Router and adjust SSR settings.

apps/nxmesh-frontend/src/App.css

@@ -1,42 +1,156 @@
+/* Light Professional Theme - nxMesh Dashboard */
+
+* {
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+body {
+  background-color: #f5f5f5;
+  margin: 0;
+  padding: 0;
+}
+
 #root {
-  max-width: 1280px;
-  margin: 0 auto;
-  padding: 2rem;
-  text-align: center;
+  width: 100%;
+  height: 100vh;
+  margin: 0;
+  padding: 0;
 }
 
-.logo {
-  height: 6em;
-  padding: 1.5em;
-  will-change: filter;
-  transition: filter 300ms;
-}
-.logo:hover {
-  filter: drop-shadow(0 0 2em #646cffaa);
-}
-.logo.react:hover {
-  filter: drop-shadow(0 0 2em #61dafbaa);
+/* Header Styles */
+.ant-layout-header {
+  background: #ffffff !important;
+  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
 }
 
-@keyframes logo-spin {
-  from {
-    transform: rotate(0deg);
+/* Sidebar Styles */
+.ant-layout-sider {
+  background: #fafafa !important;
+}
+
+.ant-menu {
+  background: #fafafa !important;
+}
+
+.ant-menu-item,
+.ant-menu-submenu-title {
+  color: #333 !important;
+  transition: all 0.3s ease;
+}
+
+.ant-menu-item-selected {
+  background-color: #e6f7ff !important;
+  color: #1890ff !important;
+}
+
+.ant-menu-item:hover,
+.ant-menu-submenu-title:hover {
+  color: #1890ff !important;
+}
+
+/* Content Area */
+.ant-layout-content {
+  background: #f5f5f5;
+}
+
+/* Card Styles */
+.ant-card {
+  border-color: #f0f0f0;
+  border-radius: 6px;
+  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
+  transition: all 0.3s ease;
+}
+
+.ant-card:hover {
+  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
+}
+
+.ant-card-head {
+  border-bottom: 1px solid #f0f0f0;
+  background: #fafafa;
+}
+
+/* Statistic Styles */
+.ant-statistic-title {
+  color: #666;
+  font-size: 14px;
+  margin-bottom: 8px;
+}
+
+.ant-statistic-content {
+  color: #1890ff;
+  font-weight: 600;
+  font-size: 28px;
+}
+
+/* Button Styles */
+.ant-btn-primary {
+  background-color: #1890ff;
+  border-color: #1890ff;
+  transition: all 0.3s ease;
+}
+
+.ant-btn-primary:hover {
+  background-color: #0050b3;
+  border-color: #0050b3;
+  transform: translateY(-2px);
+  box-shadow: 0 4px 12px rgba(24, 144, 255, 0.3);
+}
+
+/* Input Styles */
+.ant-input {
+  border-radius: 4px;
+  border-color: #d9d9d9;
+}
+
+.ant-input:hover {
+  border-color: #1890ff;
+}
+
+.ant-input-focused {
+  border-color: #1890ff;
+  box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.1);
+}
+
+/* Badge Styles */
+.ant-badge-success {
+  color: #52c41a;
+}
+
+.ant-badge-processing {
+  color: #1890ff;
+}
+
+/* Typography */
+h1,
+h2,
+h3,
+h4,
+h5,
+h6 {
+  color: #333;
+  font-weight: 600;
+}
+
+p {
+  color: #666;
+  line-height: 1.6;
+}
+
+/* Responsive Design */
+@media (max-width: 768px) {
+  .ant-layout-sider {
+    width: 100% !important;
+    max-width: 100% !important;
   }
-  to {
-    transform: rotate(360deg);
+
+  .ant-layout-content {
+    padding: 16px !important;
+  }
+
+  .ant-card {
+    margin-bottom: 12px;
   }
 }
-
-@media (prefers-reduced-motion: no-preference) {
-  a:nth-of-type(2) .logo {
-    animation: logo-spin infinite 20s linear;
-  }
-}
-
-.card {
-  padding: 2em;
-}
-
-.read-the-docs {
-  color: #888;
-}