I'm unable to create Workspace Rules in Antigravity.
When I click Agent → Customizations → Rules → + Workspace, I get:
Failed to create rule: ConnectError: no workspaces found
Global Rules work fine, but Workspace Rules always fail.
I also see errors in Developer Tools like Failed to load MCP servers, Failed to load skills paths, and POST ... /proxy/unleash/frontend 404.
Is this a known bug?