Summary

• drop the redundant header from the workspace members page and rely on the sidebar navigation
• add a sidebar footer slot powered by SidebarFooter and push the Members item into the settings items for the footer user nav
• extend SidebarUserNav to accept configurable settings links that appear under the Settings menu and show the Members link when the user can view members

Testing

• Not run (not requested)

Summary by cubic

Moved the Members link into the sidebar footer Settings menu, removed the Workspace Members header, and standardized page padding for consistency. Also improved the role change dialog and reduced unnecessary data fetching.

• Refactors

  • Added SidebarFooter and moved SidebarUserNav to the footer; shows Members under Settings when permitted.
  • Standardized layout/padding with container spacing on Members and Tables pages.
  • Tuned hooks with 5-minute caching and disabled window refetch; added conditional enable flags to avoid fetching until dialogs are open.

• Bug Fixes

  • Hardened role change flow: validation for missing user/role, disabled controls during loading/mutations, and load roles/assignments only when the dialog is open.

^{Written for commit 42206d5. Summary will update on new commits.}