improvements for folders and parameters (#3918)

Co-authored-by: Jonathan Dobson <jon.m.dobson@gmail.com>

skyvern/forge/sdk/db/client.py

@@ -1436,6 +1436,23 @@ class AgentDB:
             if version:
                 workflow.version = version
             session.add(workflow)
+
+            # Update folder's modified_at if folder_id is provided
+            if folder_id:
+                # Validate folder exists and belongs to the same organization
+                folder_stmt = (
+                    select(FolderModel)
+                    .where(FolderModel.folder_id == folder_id)
+                    .where(FolderModel.organization_id == organization_id)
+                    .where(FolderModel.deleted_at.is_(None))
+                )
+                folder_model = await session.scalar(folder_stmt)
+                if not folder_model:
+                    raise ValueError(
+                        f"Folder {folder_id} not found or does not belong to organization {organization_id}"
+                    )
+                folder_model.modified_at = datetime.utcnow()
+
             await session.commit()
             await session.refresh(workflow)
             return convert_to_workflow(workflow, self.debug_enabled)