feat: Implement agent availability status with a toggle for agents and display on user profiles.

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

@@ -208,8 +208,8 @@ export default function AgentProfileView() {
             </div>
           </div>
 
-          {/* Status Buttons */}
-          <StatusButtons />
+          {/* Status Buttons - Public view shows availability status */}
+          <StatusButtons isAvailable={agentProfile.isAvailable ?? true} />
 
           {/* Contact Info */}
           <ContactInfo