fix(i18n): 修正 profile 子 namespace 路径 + feedback namespace 对齐新字典

profile 下的 follow/activity/card/repos/docs/edit 统一从独立顶层 namespace
改为 profile.xxx 嵌套路径，与 translator 发布的新字典结构一致。
pageFeedback → feedback namespace，sec3/sec4 titleField key 修正。

Author: longsizhuo

app/components/PageFeedback.tsx

@@ -8,7 +8,7 @@ import { ThumbsUp, ThumbsDown } from "lucide-react";
 
 export function PageFeedback() {
   const pathname = usePathname();
-  const t = useTranslations("pageFeedback");
+  const t = useTranslations("feedback");
   const [voted, setVoted] = useState<"helpful" | "not_helpful" | null>(null);
 
   const handleVote = (vote: "helpful" | "not_helpful") => {

app/u/[username]/ActivityHeatmap.tsx

@@ -32,7 +32,7 @@ function formatDay(d: Date): string {
 }
 
 export async function ActivityHeatmap({ dailyCounts }: Props) {
-  const t = await getTranslations("activity");
+  const t = await getTranslations("profile.activity");
   // 以今天为右边界，往前 52 周；按周对齐：从上上周日起（GitHub 图的起点）
   const today = new Date();
   today.setUTCHours(0, 0, 0, 0);

app/u/[username]/FollowButton.tsx

@@ -38,7 +38,7 @@ function readToken(): string | null {
  */
 export function FollowButton({ identifier, targetUserId }: Props) {
   const { user, status } = useAuth();
-  const t = useTranslations("follow");
+  const t = useTranslations("profile.follow");
   const [followerCount, setFollowerCount] = useState<number | null>(null);
   const [followingCount, setFollowingCount] = useState<number | null>(null);
   const [isFollowing, setIsFollowing] = useState(false);

app/u/[username]/GithubRepos.tsx

@@ -56,7 +56,7 @@ function fmtDate(iso: string): string {
 export async function GithubRepos({ identifier }: Props) {
   const repos = await fetchRepos(identifier);
   if (repos.length === 0) return null;
-  const t = await getTranslations("repos");
+  const t = await getTranslations("profile.repos");
 
   return (
     <section className="border border-[var(--foreground)] p-6 lg:p-8 flex flex-col gap-4">

app/u/[username]/ProfileCard.tsx

@@ -60,7 +60,7 @@ export function ProfileCard({
   spanFull,
 }: ProfileCardProps) {
   const [expanded, setExpanded] = useState(false);
-  const t = useTranslations("card");
+  const t = useTranslations("profile.card");
 
   const kindLabel = {
     PROJ: t("kind.project"),

app/u/[username]/edit/EditProfileForm.tsx

@@ -105,7 +105,7 @@ interface Props {
 export function EditProfileForm({ targetIdentifier }: Props) {
   const { user, status } = useAuth();
   const router = useRouter();
-  const t = useTranslations("edit");
+  const t = useTranslations("profile.edit");
 
   const [prefs, setPrefs] = useState<Preferences>(EMPTY_PREFS);
   const [loading, setLoading] = useState(true);
@@ -316,7 +316,7 @@ export function EditProfileForm({ targetIdentifier }: Props) {
                 type="text"
                 value={item.title}
                 onChange={(e) => update({ ...item, title: e.target.value })}
-                placeholder={t("sec3.title.placeholder")}
+                placeholder={t("sec3.titleField.placeholder")}
                 className="border border-[var(--foreground)] bg-[var(--background)] px-3 py-2 font-serif text-sm font-bold"
               />
               <textarea
@@ -388,7 +388,7 @@ export function EditProfileForm({ targetIdentifier }: Props) {
                 type="text"
                 value={item.title}
                 onChange={(e) => update({ ...item, title: e.target.value })}
-                placeholder={t("sec4.title.placeholder")}
+                placeholder={t("sec4.titleField.placeholder")}
                 className="border border-[var(--foreground)] bg-[var(--background)] px-3 py-2 font-serif text-sm font-bold"
               />
               <div className="grid grid-cols-1 md:grid-cols-[2fr_1fr] gap-2">

app/u/[username]/edit/page.tsx

@@ -14,7 +14,7 @@ interface Param {
  */
 export default async function EditProfilePage({ params }: Param) {
   const { username } = await params;
-  const t = await getTranslations("edit");
+  const t = await getTranslations("profile.edit");
   return (
     <>
       <Header />

app/u/[username]/page.tsx

@@ -230,7 +230,7 @@ export default async function UserProfilePage({ params }: Param) {
   if (!data) notFound();
 
   const t = await getTranslations("profile");
-  const tDocs = await getTranslations("docs");
+  const tDocs = await getTranslations("profile.docs");
   const { user } = data;
   const preferences = data.preferences ?? {};
   const { docs, points, commits, dailyCounts } = findContributions(