feat: enhance session management by resolving collaborators to users and integrating CollaboratorDisplay component across motivators and sessions pages

src/app/sessions/[id]/page.tsx

@@ -5,7 +5,7 @@ import { getSessionById } from '@/services/sessions';
 import { SwotBoard } from '@/components/swot/SwotBoard';
 import { SessionLiveWrapper } from '@/components/collaboration';
 import { EditableTitle } from '@/components/session';
-import { Badge } from '@/components/ui';
+import { Badge, CollaboratorDisplay } from '@/components/ui';
 
 interface SessionPageProps {
   params: Promise<{ id: string }>;
@@ -49,9 +49,13 @@ export default async function SessionPage({ params }: SessionPageProps) {
               initialTitle={session.title}
               isOwner={session.isOwner}
             />
-            <p className="mt-1 text-lg text-muted">
-              👤 {session.collaborator}
-            </p>
+            <div className="mt-2">
+              <CollaboratorDisplay
+                collaborator={session.resolvedCollaborator}
+                size="lg"
+                showEmail
+              />
+            </div>
           </div>
           <div className="flex items-center gap-3">
             <Badge variant="primary">{session.items.length} items</Badge>