feat: add tablet search with recently viewed
Stacked on !5. Diff auto-cleans as the chain merges
Summary
client-side search for tablets on the search tab
Changes
- Debounced search over title/theme/blurb -> instant, offline, no extra network calls
- Result count + empty / no-results states
- Recently Viewed (last 10, MMKV) shown when the query is empty
- Home search bar -> routes to the Search tab with the input auto-focused
Notes
- searches the already-cached feed; no server call
Video