hot fix #1

database/migrations/20250120123000_add_unique_reaction_constraint.up.sql

@@ -0,0 +1,11 @@
+-- Add unique constraint for comment reactions if it doesn't exist
+DO $$
+BEGIN
+    IF NOT EXISTS (
+        SELECT 1 FROM information_schema.table_constraints 
+        WHERE constraint_name = 'unique_comment_user_reaction' 
+        AND table_name = 'comment_reactions'
+    ) THEN
+        ALTER TABLE comment_reactions ADD CONSTRAINT unique_comment_user_reaction UNIQUE (comment_id, user_id);
+    END IF;
+END $$;