* feat: add backlink search history
Save recent backlink searches so users can quickly rerun previous lookups instead of starting from an empty state each time. Also widen the keyword research empty state layout to better use the available space.
* update dev tools
* update recent search navigation across SEO pages
* refine search layouts and recent search navigation
* simplify recent search resets and history storage
* save
* fix recent search hydration mismatch
* fix ci lint issues
