i18n: translate meal/drink pairing, nutrition, comments, DMs, people search, URL import

Full sweep of hardcoded English strings across:
- Meal pairing and drink pairing dialogs (titles, descriptions, role/
  type labels, regenerate/generate buttons, progress labels) — also
  fixed drink type labels that had French text hardcoded regardless
  of locale ("Sans alcool"/"Chaud").
- Nutrition panel — had no useTranslations at all.
- Comments: header, empty/loading state, post/reply/cancel/delete
  buttons, relative timestamps (just now/Xm ago/Xh ago/Xd ago), and
  comment-reactions' toasts + aria-labels.
- Rating stars toasts.
- Direct messages: thread, conversation list, message button, both
  /messages pages.
- People search page and component.
- URL import dialog (title, description, buttons, toasts).

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

apps/web/components/social/comment-reactions.tsx

@@ -2,6 +2,7 @@
 
 import { useState, useEffect } from "react";
 import { toast } from "sonner";
+import { useTranslations } from "next-intl";
 
 const REACTIONS: Record<string, string> = {
   like: "👍",
@@ -20,6 +21,7 @@ type Props = {
 };
 
 export function CommentReactions({ recipeId, commentId, initialCounts = {}, initialUserReactions = [] }: Props) {
+  const t = useTranslations("social");
   const [counts, setCounts] = useState<Record<string, number>>(initialCounts);
   const [userReactions, setUserReactions] = useState<string[]>(initialUserReactions);
   const [pending, setPending] = useState<string | null>(null);
@@ -69,9 +71,9 @@ export function CommentReactions({ recipeId, commentId, initialCounts = {}, init
           [type]: Math.max(0, (prev[type] ?? 0) + (hasReacted ? 1 : -1)),
         }));
         if (res.status === 401) {
-          toast.error("Sign in to react to comments");
+          toast.error(t("signInToReact"));
         } else {
-          toast.error("Failed to update reaction");
+          toast.error(t("reactionFailed"));
         }
         return;
       }
@@ -92,7 +94,7 @@ export function CommentReactions({ recipeId, commentId, initialCounts = {}, init
         ...prev,
         [type]: Math.max(0, (prev[type] ?? 0) + (hasReacted ? 1 : -1)),
       }));
-      toast.error("Failed to update reaction");
+      toast.error(t("reactionFailed"));
     } finally {
       setPending(null);
     }
@@ -115,7 +117,7 @@ export function CommentReactions({ recipeId, commentId, initialCounts = {}, init
                 : "border-border bg-transparent text-muted-foreground hover:border-primary/50 hover:text-foreground",
               pending === type ? "opacity-60 cursor-not-allowed" : "cursor-pointer",
             ].join(" ")}
-            aria-label={`${reacted ? "Remove" : "Add"} ${type} reaction`}
+            aria-label={reacted ? t("removeReaction", { type }) : t("addReaction", { type })}
             aria-pressed={reacted}
           >
             <span>{emoji}</span>