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/layout/KeepOnlineWrapper.tsx

@@ -1,4 +1,4 @@
-"use client";
+"use client";
 
 import { usePathname } from "next/navigation";
 import KeepOnline from "@/components/KeepOnline";
@@ -14,4 +14,4 @@ const KeepOnlineWrapper = () => {
   return <KeepOnline />;
 };
 
-export default KeepOnlineWrapper; 
+export default KeepOnlineWrapper; 

components/layout/layout.tsx

@@ -1,4 +1,4 @@
-"use client"
+"use client"
 
 import { useState, useEffect } from "react"
 import { useTheme } from "next-themes"

components/layout/nav-item.tsx

@@ -1,4 +1,4 @@
-"use client"
+"use client"
 
 import Link from "next/link"
 import { usePathname } from "next/navigation"
@@ -65,4 +65,4 @@ export const NavItem: React.FC<NavItemProps> = ({ href, icon: Icon, children, on
       {children}
     </Link>
   )
-}
+}

components/layout/sidebar.tsx

@@ -1,4 +1,4 @@
-"use client"
+"use client"
 
 import { useState } from "react"
 import Link from "next/link"

components/layout/theme-provider.tsx

@@ -1,4 +1,4 @@
-"use client"
+"use client"
 import { ThemeProvider as NextThemesProvider } from "next-themes"
 import type { ThemeProviderProps } from "next-themes"