feat[agent]: set up TanStack Router and Loads page component for React frontend

frontend/package.json

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+{
+  "name": "freightdesk-frontend",
+  "version": "0.1.0",
+  "private": true,
+  "scripts": {
+    "dev": "vite --port 3000",
+    "build": "vite build",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "react": "^18.3.0",
+    "react-dom": "^18.3.0",
+    "@tanstack/react-query": "^5.0.0",
+    "@tanstack/react-router": "^1.0.0",
+    "@supabase/supabase-js": "^2.45.0",
+    "styled-components": "^6.0.0"
+  },
+  "devDependencies": {
+    "vite": "^5.0.0",
+    "@vitejs/plugin-react": "^4.0.0"
+  }
+}

frontend/src/App.jsx

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+import React from 'react';
+import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
+import { AppRouter } from './router';
+
+// Create QueryClient instance
+const queryClient = new QueryClient({
+  defaultOptions: {
+    queries: {
+      staleTime: 5 * 60 * 1000, // 5 minutes
+      refetchOnWindowFocus: false,
+      retry: 1,
+    }
+  }
+});
+
+function App() {
+  return (
+    <QueryClientProvider value={queryClient}>
+      <AppRouter />
+    </QueryClientProvider>
+  );
+}
+
+export default App;

frontend/src/components/LoadsList.jsx

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+import React, { useState } from 'react';
+import { useQuery } from '@tanstack/react-query';
+import { supabase } from '../supabaseClient';
+
+// Utility functions (mirroring india.js logic for now)
+const formatINR = (n) => {
+  if (n === null || n === undefined || isNaN(n)) return '—';
+  return '₹' + parseFloat(n).toLocaleString('en-IN');
+};
+
+const getStatusColor = (status) => {
+  const colors = {
+    'settled': 'success',
+    'completed': 'success',
+    'commission received': 'success',
+    'reconciled': 'success',
+    'loaded / in transit': 'primary',
+    'assigned': 'primary',
+    'assigned vehicle': 'primary',
+    'pending collection': 'warning',
+    'partially pending': 'warning',
+    'fully pending from shipper': 'warning',
+    'commission due': 'warning',
+    'cancelled': 'danger',
+    'partial': 'secondary',
+    'available vehicle': 'secondary',
+  };
+  return colors[status] || 'secondary';
+};
+
+function LoadsList() {
+  const [filterStatus, setFilterStatus] = useState('');
+  const [searchTerm, setSearchTerm] = useState('');
+
+  const { data: loads = [], isLoading, isError, refetch } = useQuery({
+    queryKey: ['loads', filterStatus, searchTerm],
+    queryFn: async () => {
+      let query = supabase
+        .from('loads')
+        .select(`
+          id,
+          date,
+          from_city,
+          to_city,
+          freight_charged,
+          commission,
+          status,
+          shipper:shippers(name),
+          vehicle:vehicles(number)
+        `)
+        .order('date', { ascending: false })
+        .limit(100);
+
+      if (filterStatus) query = query.eq('status', filterStatus);
+      if (searchTerm) {
+        query = query.or(`from_city.ilike.%${searchTerm}%,to_city.ilike.%${searchTerm}%`);
+      }
+
+      const { data, error } = await query;
+      if (error) throw error;
+      return data;
+    },
+    staleTime: 5 * 60 * 1000, // 5 minutes
+  });
+
+  if (isLoading) return <div className="text-center py-5">Loading loads...</div>;
+  if (isError) return <div className="text-center py-5 text-danger">Error loading loads</div>;
+
+  return (
+    <div className="container mt-4">
+      <h2>Loads Management</h2>
+      
+      {/* Filters */}
+      <div className="row mb-3 g-2">
+        <div className="col-md-4">
+          <input
+            type="text"
+            className="form-control"
+            placeholder="Search cities..."
+            value={searchTerm}
+            onChange={(e) => setSearchTerm(e.target.value)}
+          />
+        </div>
+        <div className="col-md-4">
+          <select
+            className="form-select"
+            value={filterStatus}
+            onChange={(e) => setFilterStatus(e.target.value)}
+          >
+            <option value="">All Statuses</option>
+            <option value="settled">Settled</option>
+            <option value="loaded / in transit">In Transit</option>
+            <option value="pending collection">Pending Collection</option>
+            <option value="cancelled">Cancelled</option>
+          </select>
+        </div>
+      </div>
+
+      {/* Loads Table */}
+      <table className="table table-hover">
+        <thead>
+          <tr>
+            <th>Date</th>
+            <th>Route</th>
+            <th>Shipper</th>
+            <th>Freight</th>
+            <th>Commission</th>
+            <th>Status</th>
+          </tr>
+        </thead>
+        <tbody>
+          {loads.map((load) => (
+            <tr key={load.id}>
+              <td>{new Date(load.date).toLocaleDateString('en-IN')}</td>
+              <td>{load.from_city} → {load.to_city}</td>
+              <td>{load.shipper?.name || '—'}</td>
+              <td>{formatINR(load.freight_charged)}</td>
+              <td>{formatINR(load.commission)}</td>
+              <td>
+                <span className={`badge bg-${getStatusColor(load.status)}`}>
+                  {load.status}
+                </span>
+              </td>
+            </tr>
+          ))}
+        </tbody>
+      </table>
+    </div>
+  );
+}
+
+export default LoadsList;

frontend/src/index.css

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+/* Basic styling for FreightDesk frontend */
+body {
+  margin: 0;
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
+  background-color: #f8f9fa;
+}
+
+#root {
+  min-height: 100vh;
+}
+
+/* Status badge colors override */
+.badge.bg-success {
+  background-color: #28a745 !important;
+}
+.badge.bg-warning {
+  background-color: #ffc107 !important;
+  color: #212529 !important;
+}
+.badge.bg-danger {
+  background-color: #dc3545 !important;
+}
+.badge.bg-primary {
+  background-color: #0d6efd !important;
+}
+.badge.bg-secondary {
+  background-color: #6c757d !important;
+}

frontend/src/index.jsx

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+import React from 'react';
+import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
+
+// Create QueryClient instance
+const queryClient = new QueryClient({
+  defaultOptions: {
+    queries: {
+      // We'll define query state overrides in individual components
+    }
+  }
+});
+
+function App() {
+  return (
+    <QueryClientProvider value={queryClient}>
+      <supabaseClient />
+    </QueryClientProvider>
+  );
+}
+
+export default App;

frontend/src/main.jsx

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+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import App from './App';
+import './index.css';
+
+const root = ReactDOM.createRoot(document.getElementById('root'));
+
+root.render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>
+);

frontend/src/router.jsx

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+import React from 'react';
+import { createRootRoute, RouterProvider, createBrowserRouter } from '@tanstack/react-router';
+import LoadsList from './components/LoadsList';
+
+// Root layout – can later include a navbar or sidebar
+function RootLayout({ children }) {
+  return (
+    <div>
+      {/* Simple header */}
+      <header className="bg-primary text-white p-3">
+        <h1 className="mb-0" style={{ fontSize: '1.5rem' }}>FreightDesk Dashboard</h1>
+      </header>
+      <main>{children}</main>
+    </div>
+  );
+}
+
+// Define the root route (layout)
+const rootRoute = createRootRoute({
+  component: RootLayout,
+});
+
+// Loads page route
+const loadsRoute = rootRoute.createRoute({
+  path: '/loads',
+  component: LoadsList,
+});
+
+// Default route – redirect to /loads
+const indexRoute = rootRoute.createRoute({
+  path: '/',
+  component: () => {
+    // Simple redirect component
+    React.useEffect(() => {
+      window.location.replace('/loads');
+    }, []);
+    return null;
+  },
+});
+
+// Build the router
+const routeTree = rootRoute.addChildren([loadsRoute, indexRoute]);
+
+export const router = createBrowserRouter({ routeTree });
+
+export function AppRouter() {
+  return <RouterProvider router={router} />;
+}

frontend/src/supabaseClient.js

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+import { createClient } from '@supabase/supabase-js';
+
+const supabaseUrl = import.meta.env.VITE_SUPABASE_URL;
+const supabaseKey = import.meta.env.VITE_SUPABASE_ANON_KEY;
+
+export const supabase = createClient(supabaseUrl, supabaseKey);

frontend/vite.config.js

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+import { defineConfig } from 'vite';
+import react from '@vitejs/plugin-react';
+
+// https://vitejs.dev/config/
+export default defineConfig({
+  plugins: [react()],
+  server: {
+    port: 3000,
+  },
+});