0edc3a385c
When `IS_WORKSPACE_CREATION_LIMITED_TO_SERVER_ADMINS` is true, anonymous users could still create workspaces because `checkWorkspaceCreationIsAllowedOrThrow` checked per-user workspace count (always 0 for new users) instead of system-wide workspace count. The bootstrap bypass now only applies when no workspaces exist in the entire system. Also adds the same check in `signUpOnNewWorkspace` to guard the `signInUp` code path. Fixes #17631 Generated with [Claude Code](https://claude.ai/claude-code) Co-authored-by: claude[bot] <41898282+claude[bot]@users.noreply.github.com>