Add recently viewed APIs section #10
Description
Users who browse several APIs have no way to get back to ones they looked at earlier without searching again.
Proposed solution
Store the last 5-10 visited API detail pages in localStorage and show them in a small section on the homepage below the search bar.
Acceptance criteria
- Recently viewed section appears after first API visit
- Shows up to 8 recent APIs
- Dismissable / clearable
- Persists across sessions via localStorage