fix: raise text-ink/50 contrast to WCAG AA across 8 files

Live Lighthouse audit of /konto found the same class of bug as the
prior checkout/cart commit, one shade lighter: text-ink/50 measures
3.08:1 against the cream background, under the 4.5:1 WCAG AA minimum
for normal-size text. Grepped for every other use of the same token
(login divider, language switcher, sold-out label, admin image-upload
status text, admin hint text) and bumped them all to text-ink/70
(5.61:1, same value used in the earlier checkout fix) for one
consistent, compliant muted-text shade. Verified: tsc clean, 151/151
tests pass, /konto Lighthouse accessibility 96 -> 100.

Co-Authored-By: Claude Sonnet 5 <[email protected]>

src/components/admin-image-field.tsx

@@ -73,14 +73,14 @@ export function AdminImageField({ name, label, initialValue }: AdminImageFieldPr
             className="block text-xs"
           />
           {status === "uploading" ? (
-            <p className="mt-1 text-xs text-ink/50">{t.adminImageField.uploading}</p>
+            <p className="mt-1 text-xs text-ink/70">{t.adminImageField.uploading}</p>
           ) : null}
           {status === "error" ? <p className="mt-1 text-xs text-red-700">{errorMessage}</p> : null}
           {value ? (
             <button
               type="button"
               onClick={() => setValue("")}
-              className="mt-1 text-xs text-ink/50 underline"
+              className="mt-1 text-xs text-ink/70 underline"
             >
               {t.adminImageField.remove}
             </button>

src/components/admin-image-list-field.tsx

@@ -91,7 +91,7 @@ export function AdminImageListField({ name, label, initialValues }: AdminImageLi
           className="block text-xs"
         />
         {status === "uploading" ? (
-          <p className="mt-1 text-xs text-ink/50">{t.adminImageField.uploading}</p>
+          <p className="mt-1 text-xs text-ink/70">{t.adminImageField.uploading}</p>
         ) : null}
         {status === "error" ? <p className="mt-1 text-xs text-red-700">{errorMessage}</p> : null}
       </div>

src/components/language-switcher.tsx

@@ -38,7 +38,7 @@ export function LanguageSwitcher({ className = "" }: { className?: string }) {
             aria-current={code === locale}
             title={localeLabels[code]}
             className={`uppercase tracking-wide transition-colors disabled:opacity-50 ${
-              code === locale ? "text-forest font-medium" : "text-ink/50 hover:text-forest"
+              code === locale ? "text-forest font-medium" : "text-ink/70 hover:text-forest"
             }`}
           >
             {code}

src/components/sticky-add-to-cart-bar.tsx

@@ -61,7 +61,7 @@ export function StickyAddToCartBar({
             {justAdded ? t.product.added : t.product.addToCart}
           </Button>
         ) : (
-          <span className="flex-shrink-0 text-xs tracking-wide-caps text-ink/50">{t.productPage.soldOut}</span>
+          <span className="flex-shrink-0 text-xs tracking-wide-caps text-ink/70">{t.productPage.soldOut}</span>
         )}
       </div>
     </div>