feat: Introduce alwaysShow prop for MobileBackButton to control visibility and apply minor UI refinements to specialization cards and chat header.

src/app/(user)/user/profile/[id]/page.tsx

@@ -278,7 +278,7 @@ export default function AgentProfileView() {
 
   return (
     <div className="max-w-7xl mx-auto px-4 lg:px-8 py-6 space-y-6">
-      <MobileBackButton label="Back" fallbackHref="/user/profiles" />
+      <MobileBackButton label="Back" fallbackHref="/user/profiles" alwaysShow />
       {/* Main Layout - Responsive: Column on mobile, Row on desktop */}
       <div className="flex flex-col lg:flex-row gap-6 lg:items-stretch">
         {/* Left Sidebar - Status & Contact */}