fix: resolve RLS infinite recursion in tastings and sessions

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

@@ -99,9 +99,16 @@ export default function SessionDetailPage() {
     const handleAddParticipant = async (buddyId: string) => {
         if (participants.some(p => p.buddy_id === buddyId)) return;
 
+        const { data: { user } } = await supabase.auth.getUser();
+        if (!user) return;
+
         const { error } = await supabase
             .from('session_participants')
-            .insert([{ session_id: id, buddy_id: buddyId }]);
+            .insert([{
+                session_id: id,
+                buddy_id: buddyId,
+                user_id: user.id
+            }]);
 
         if (!error) {
             fetchSessionData();