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

app/game/[id]/game-page-client.tsx

@@ -1476,17 +1476,6 @@ function Badge({
     )
 }
 
-function MetaItem({ label, value }: { label: string; value: string }) {
-    return (
-        <div className='flex flex-col gap-1'>
-            <span className='text-[10px] text-text/50 uppercase tracking-wider'>
-                {label}
-            </span>
-            <span className='text-text/80 text-sm'>{value}</span>
-        </div>
-    )
-}
-
 function StatCard({
     label,
     value,