feat: Pass user role and agent type via cookies for social sign-up and include them in the social authentication API request.

src/app/(auth)/signup/page.tsx

@@ -94,6 +94,16 @@ export default function SignUpPage() {
   };
 
   const handleSocialLogin = (provider: 'google' | 'facebook' | 'twitter') => {
+    // If agent, require agent type selection
+    if (userType === 'AGENT' && !selectedAgentTypeId) {
+      setError('Please select an agent type before signing up');
+      return;
+    }
+    // Set cookies with selected role and agent type so server-side auth callback can read them
+    document.cookie = `socialAuthRole=${userType};path=/;max-age=300;SameSite=Lax`;
+    if (userType === 'AGENT' && selectedAgentTypeId) {
+      document.cookie = `socialAuthAgentTypeId=${selectedAgentTypeId};path=/;max-age=300;SameSite=Lax`;
+    }
     signIn(provider, { callbackUrl: '/' });
   };
 
@@ -317,14 +327,6 @@ export default function SignUpPage() {
 
       {/* Social Login Icons */}
       <div className="flex justify-center items-center gap-8">
-        {/* Apple */}
-        <button
-          type="button"
-          className="w-10 h-10 flex items-center justify-center hover:opacity-70 transition-opacity"
-        >
-          <img src="/assets/icons/apple.svg" alt="Apple" className="w-6 h-6" />
-        </button>
-
         {/* Google */}
         <button
           type="button"