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/features/search/Search.tsx

@@ -251,7 +251,7 @@ export function Search({ requestClose }: SearchProps) {
             allowOutsideClick: true,
             clickOutsideDeactivates: true,
             onDeactivate: requestClose,
-            escapeDeactivates: (evt) => {
+            escapeDeactivates: (evt: KeyboardEvent) => {
               evt.stopPropagation();
               return true;
             },