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/people-search.tsx

@@ -2,6 +2,7 @@
 
 import { useEffect, useState } from "react";
 import Link from "next/link";
+import { useTranslations } from "next-intl";
 import { Avatar, AvatarFallback, AvatarImage } from "@/components/ui/avatar";
 import { Input } from "@/components/ui/input";
 import { FollowButton } from "@/components/social/follow-button";
@@ -16,6 +17,7 @@ type PersonResult = {
 };
 
 export function PeopleSearch() {
+  const t = useTranslations("people");
   const [q, setQ] = useState("");
   const [results, setResults] = useState<PersonResult[]>([]);
   const [loading, setLoading] = useState(false);
@@ -47,15 +49,15 @@ export function PeopleSearch() {
         <Input
           value={q}
           onChange={(e) => setQ(e.target.value)}
-          placeholder="Search people by name or username…"
+          placeholder={t("searchPlaceholder")}
           className="pl-9"
         />
       </div>
 
-      {loading && <p className="text-sm text-muted-foreground">Searching…</p>}
+      {loading && <p className="text-sm text-muted-foreground">{t("searching")}</p>}
 
       {!loading && q.trim().length >= 2 && results.length === 0 && (
-        <p className="text-sm text-muted-foreground">No one found.</p>
+        <p className="text-sm text-muted-foreground">{t("noneFound")}</p>
       )}
 
       <div className="space-y-2">