fix(api): include name and slug in workspace byId response (#347)

The GET /workspaces/{id} endpoint was missing the workspace's name and
slug fields because they weren't included in the column selection.

Fixes #346

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

packages/db/src/repository/workspace.repo.ts

@@ -185,6 +185,8 @@ export const getByPublicIdWithMembers = (
     columns: {
       id: true,
       publicId: true,
+      name: true,
+      slug: true,
       showEmailsToMembers: true,
     },
     with: {