Add CSV export for orders and update UI symbols

Introduces an exportOrdersToCSV function in lib/api-client.ts to allow exporting orders by status as a CSV file. Updates various UI components to use the '•' (bullet) symbol instead of '·' (middle dot) and replaces some emoji/unicode characters for improved consistency and compatibility. Also normalizes the 'use client' directive to include a BOM in many files.

lib/api-client.ts

@@ -377,6 +377,99 @@ export const getCustomerDetails = async (userId: string): Promise<CustomerStats>
   return clientFetch(`/customers/${userId}`);
 };
 
+/**
+ * Export orders by status to CSV
+ * @param status Order status to filter by
+ * @param storeId Optional store ID (uses authenticated user's store if not provided)
+ * @returns Promise that resolves when download is triggered
+ */
+export const exportOrdersToCSV = async (status: string, storeId?: string): Promise<void> => {
+  try {
+    const apiUrl = process.env.NEXT_PUBLIC_API_URL || 'http://localhost:3001';
+    const normalizedEndpoint = '/orders/export-csv';
+    
+    // Handle API endpoint construction
+    let url;
+    if (apiUrl === '/api' || apiUrl.startsWith('/api')) {
+      url = `/api${normalizedEndpoint}`;
+    } else {
+      url = `${apiUrl}${normalizedEndpoint}`;
+    }
+    
+    // Add query parameters
+    const params = new URLSearchParams({ status });
+    if (storeId) {
+      params.append('storeId', storeId);
+    }
+    url = `${url}?${params.toString()}`;
+    
+    // Get auth token
+    const authToken = getAuthToken();
+    
+    // Prepare headers
+    const headers: Record<string, string> = {};
+    if (authToken && authToken !== 'HTTP_ONLY_COOKIE') {
+      headers['Authorization'] = `Bearer ${authToken}`;
+    }
+    
+    // Fetch the CSV file
+    const response = await fetch(url, {
+      method: 'GET',
+      credentials: 'include',
+      headers,
+    });
+    
+    if (!response.ok) {
+      const errorData = await response.json().catch(() => ({}));
+      const errorMessage = errorData.message || errorData.error || 'Failed to export orders';
+      throw new Error(errorMessage);
+    }
+    
+    // Get the CSV content
+    const blob = await response.blob();
+    
+    // Get filename from Content-Disposition header or generate one
+    const contentDisposition = response.headers.get('Content-Disposition');
+    let filename = `orders_${status}_${new Date().toISOString().split('T')[0]}.csv`;
+    if (contentDisposition) {
+      const filenameMatch = contentDisposition.match(/filename="?(.+)"?/);
+      if (filenameMatch) {
+        filename = filenameMatch[1];
+      }
+    }
+    
+    // Create download link and trigger download
+    const downloadUrl = window.URL.createObjectURL(blob);
+    const link = document.createElement('a');
+    link.href = downloadUrl;
+    link.download = filename;
+    document.body.appendChild(link);
+    link.click();
+    document.body.removeChild(link);
+    window.URL.revokeObjectURL(downloadUrl);
+  } catch (error) {
+    console.error('Error exporting orders to CSV:', error);
+    const message = error instanceof Error ? error.message : 'Failed to export orders';
+    
+    // Show error toast
+    if (typeof window !== 'undefined') {
+      if (toast?.title && toast?.description) {
+        toast({
+          title: 'Export Failed',
+          description: message,
+          variant: 'destructive',
+        });
+      } else if (typeof toast?.error === 'function') {
+        toast.error(message);
+      } else {
+        console.error('CSV export error:', message);
+      }
+    }
+    
+    throw error;
+  }
+};
+
 /**
  * Enhanced client-side fetch function with caching and automatic invalidation
  */