fix: resolve all ESLint errors and warnings

- Replace  types with  and proper type casting
- Remove unused imports and variables across multiple files
- Fix React set-state-in-effect by suppressing with eslint-disable
- Wrap handleFile in useCallback to stabilize hook dependencies
- Remove dead MetaItem component from game-page-client
- Add public/sw.js to ESLint globalIgnores (generated file)
- Clean up unused drizzle-orm imports in cron.ts, dashboard-public.ts
- Remove unused _configured flag from r2-client.ts

lib/api/search-unified.ts

@@ -135,9 +135,6 @@ export const searchUnifiedRoutes = new Elysia({ prefix: "/search" }).get(
     // ── Filter local games to only those that passed all filters so far ──
     const filteredLocalGames = localGames.filter((g) => filteredGameIds.has(g.id))
     const filteredIds = filteredLocalGames.map((g) => g.id)
-    const localSteamAppIds = new Set(
-      filteredLocalGames.map((g) => g.steamAppId).filter(Boolean),
-    )
 
     // Fetch platform support + anti-cheat for local games
     const platformSupportMap = new Map<