bug(tui): group selection does not respond to keyboard input

[BalduinLandolt]

Bug summary

In loom tui, creating a new workspace shows the group selection screen with configured groups, but no keyboard input toggles the selections. The UI indicates space should toggle items, but space and other keys have no effect.

Command

loom tui → New workspace → Group selection

Steps to reproduce

1. Have groups configured in config.toml
2. Run loom tui
3. Start creating a new workspace
4. Reach the group selection screen
5. Press space to toggle a group

Expected behavior

Space toggles the group selection on/off, as indicated by the UI.

Actual behavior

No key input registers. Groups cannot be selected, making workspace creation via TUI non-functional when using groups.