fix: translate remaining pantry UI (print button, manager, print page)

pantry-page-header's Print button, the pantry-manager add/remove
form (item name, qty, unit, expiry badges), and the print/pantry
page (title, column headers, item count, empty state, footer) were
all hardcoded English.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

apps/web/components/pantry/pantry-page-header.tsx

@@ -7,6 +7,7 @@ import { cn } from "@/lib/utils";
 
 export function PantryPageHeader() {
   const t = useTranslations("pantry");
+  const tCommon = useTranslations("common");
   return (
     <div className="flex flex-col gap-3 sm:flex-row sm:items-start sm:justify-between">
       <div>
@@ -20,7 +21,7 @@ export function PantryPageHeader() {
         </Link>
         <a href="/print/pantry" target="_blank" className={cn(buttonVariants({ variant: "outline", size: "sm" }))}>
           <Printer className="h-4 w-4" />
-          Print
+          {tCommon("print")}
         </a>
       </div>
     </div>