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/animated-counter.tsx

@@ -1,4 +1,4 @@
-"use client";
+"use client";
 
 import { useState, useEffect, useRef } from "react";
 
@@ -68,4 +68,4 @@ export function AnimatedCounter({
     : `${prefix}${displayValue.toLocaleString()}${suffix}`;
 
   return <span>{formattedValue}</span>;
-} 
+}