E2E Test Selection:
All 15 changed files are scoped to the Trending feature area, specifically the search/explore functionality within the Trending tab. The changes add totalCount support from the search API to improve the accuracy of "View X more" labels in token search results, and improve pagination boundary tracking to preserve sort order across pages.

Key changes:

1. useSearchRequest.ts - Added totalCount state from API response
2. useTrendingSearch.ts - Exposed totalCount from useSearchRequest
3. useTokensFeed.ts - Added totalCount to result interface + pagination boundary tracking with useRef/useEffect
4. useExploreSearchV2.ts - Passes fetchMore, isFetchingMore, hasMore, totalCount to tokens section
5. viewMoreLabel.ts - Updated logic to use totalCount for tokens to show accurate "View X more" count
6. ExploreSearchResultsV2.tsx - Passes totalCount to getViewMoreLabel
7. All test files - Updated mocks to include totalCount: undefined

SmokeWalletPlatform is the correct tag as it covers the Trending discovery tab including search functionality, browsing content feeds (Tokens section), and browser navigation integration. No other feature areas (confirmations, accounts, networks, swaps, etc.) are affected by these changes. The changes are purely additive (new optional field) with no breaking changes to existing interfaces.

Performance Test Selection:
The changes add a totalCount state variable and ref-based pagination boundary tracking to the Trending token search flow. These are minor additions that don't significantly impact rendering performance, list rendering, or critical user flows. The changes are additive (new optional field) and the ref/effect pattern used is lightweight. No performance-sensitive paths like account list rendering, app startup, login, or asset loading are affected.