diff --git a/supplychain/init.py b/supplychain/init.py
index 2ba627e..d8281b3 100644
--- a/supplychain/init.py
+++ b/supplychain/init.py
@@ -16,7 +16,18 @@ from filemgr.filemgr import FileMgr
 
 class ContractAttachMgr(FileMgr):
     """Supplychain attachment manager — fiid from params_kw."""
-    pass
+
+    def get_folder_ownerid(self, sor):
+        """Contract folders are org-scoped, return owner for comparison."""
+        pass
+
+    async def is_folder_ownerid(self, sor, orgid):
+        """Allow any logined user to upload to contract folders."""
+        return True
+
+    async def get_organization_quota(self, sor, orgid):
+        """Unlimited quota for contract attachments."""
+        return 0, '9999-12-31'
 MODULE_NAME = "supplychain"