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.

components/dashboard/BuyerOrderInfo.tsx

@@ -1,4 +1,4 @@
-"use client";
+"use client";
 
 import React, { useState, useEffect, useCallback, useRef } from "react";
 import { Package, ShoppingBag, Info, ExternalLink, Loader2, AlertTriangle } from "lucide-react";
@@ -237,7 +237,7 @@ export default function BuyerOrderInfo({ buyerId, chatId }: BuyerOrderInfoProps)
               <div className="p-3 border-b">
                 <h4 className="font-medium text-sm">Customer Orders</h4>
                 <p className="text-xs text-muted-foreground">
-                  {orders.length} {orders.length === 1 ? 'order' : 'orders'} • Total: {formatPrice(
+                  {orders.length} {orders.length === 1 ? 'order' : 'orders'} ÔÇó Total: {formatPrice(
                     orders.reduce((sum, order) => sum + order.totalPrice, 0)
                   )}
                 </p>
@@ -279,11 +279,11 @@ export default function BuyerOrderInfo({ buyerId, chatId }: BuyerOrderInfoProps)
                     <div className="flex justify-between items-center text-xs text-muted-foreground pl-5">
                       <div className="flex gap-1">
                         <span>{order.products.length} {order.products.length === 1 ? 'product' : 'products'}</span>
-                        <span>·</span>
+                        <span>•</span>
                         <span>{formatPrice(order.totalPrice)}</span>
                         {isOrderUnderpaid(order) && (
                           <>
-                            <span>·</span>
+                            <span>•</span>
                             <span className="text-red-500">Underpaid</span>
                           </>
                         )}
@@ -299,4 +299,4 @@ export default function BuyerOrderInfo({ buyerId, chatId }: BuyerOrderInfoProps)
       </Tooltip>
     </TooltipProvider>
   );
-} 
+}