The list card linked to the singular /automation/:id, which mismatched
the rest of the new automations CRUD surface (/automations,
/automations/new, /automations/:id/edit). Switch the card link and the
slug-preview text on the create form to the plural form, and mount
/automations/:id in the router alongside the existing singular route
(kept as a back-compat alias for any older bookmarks).
Drive-by: fold two adjacent `use super::*` imports into one and reflow
a long `if let` line in the automations handler (linter cleanup; no
behavior change).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>