fix: resolve CI and workspace lint errors (admin + storefront)

- Allow require() in next.config.js (eslint-disable) for both apps
- Replace all catch (e: any) with catch (e: unknown) and proper error handling
- Remove no-explicit-any: add types (PreviewProduct, ProductImage, Id<addresses>,
  ProductDetailReview, error payloads) across admin and storefront
- Admin: use next/image in ImageUploadSection and ProductImageCarousel; remove
  unused layout fonts and sidebar imports; fix products page useMemo deps
- Storefront: use Link for /sign-in in header actions; fix useAddressMutations
  and product detail types; remove unused imports/vars and fix useMemo deps

Made-with: Cursor

apps/storefront/src/lib/search/useClickOutside.test.tsx

@@ -17,7 +17,7 @@ describe("useClickOutside", () => {
 
   it("does not call handler when enabled is false", () => {
     const handler = vi.fn();
-    const { result } = renderHook(() => {
+    renderHook(() => {
       const ref = useRef<HTMLDivElement>(document.createElement("div"));
       useClickOutside([ref], handler, false);
       return ref;