chore: upgrade TypeScript 4.9 to 5.9, ESLint 8.29 to 8.57, @typescript-eslint 5 to 7

Resolves all TS2345/TS2347/TS7006 type errors introduced by stricter TypeScript 5.x.
Fix Icons.Settings to Icons.Setting, cast account data returns, fix implicit any.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/app/components/GifPicker.tsx

@@ -49,7 +49,9 @@ function GifPickerInner({ onSelect, requestClose, lotusTerminal }: GifPickerInne
         </div>
       )}
       <Box style={{ padding: '8px 8px 4px' }}>
-        <SearchBar style={{ width: '100%', borderRadius: lotusTerminal ? '4px' : '8px' }} />
+        <div style={{ width: '100%', borderRadius: lotusTerminal ? '4px' : '8px' }}>
+          <SearchBar />
+        </div>
       </Box>
       <div
         style={{ overflowY: 'auto', overflowX: 'hidden', maxHeight: '340px', padding: '0 8px 8px' }}