The settings shell wrapped children in an outer section with p-3/p-4 padding.
With OverlayScrollbars replacing native scroll, the overlay scrollbar sat at
the viewport's right edge and covered the right border of inner cards.
Drop the outer padding (and the now-redundant overflow-auto) from the shell
and apply p-3 md:p-4 inside each settings page instead, so the scrollbar
aligns with the column edge while inner sections stay within the padded area.
Add a new settings page for managing API model providers (name, API URL,
API key, applicable agent types). Includes database migration, SeaORM
entity, backend CRUD commands/handlers, frontend settings UI with agent
type filter, add/edit/delete dialogs, and i18n support for all 10 locales.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
