feat: 全站评论开关，并统一后台表单控件

关闭评论后前台隐藏评论能力；外观/设置/公告改用 AdminField 与 Stepper。

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/components/home/CommunityPanels.tsx

@@ -27,7 +27,15 @@ import { formatCompact, formatShortDate } from "@/lib/format";
 
 /* ---------- 站点数据（2×2 bento 统计瓦片） ---------- */
 
-function PulseCard({ stats, checkin }: { stats: OverviewStats; checkin?: CheckinStatus | null }) {
+function PulseCard({
+  stats,
+  checkin,
+  allowComments,
+}: {
+  stats: OverviewStats;
+  checkin?: CheckinStatus | null;
+  allowComments: boolean;
+}) {
   const cells = [
     {
       icon: <Users size={12.5} />,
@@ -43,13 +51,25 @@ function PulseCard({ stats, checkin }: { stats: OverviewStats; checkin?: Checkin
       foot: `+${formatCompact(stats.today_posts)} 今日`,
       up: true,
     },
-    {
-      icon: <MessageCircle size={12.5} />,
-      label: "回复总数",
-      value: formatCompact(stats.comments),
-      foot: `+${formatCompact(stats.today_comments)} 今日`,
-      up: true,
-    },
+    ...(allowComments
+      ? [
+          {
+            icon: <MessageCircle size={12.5} />,
+            label: "回复总数",
+            value: formatCompact(stats.comments),
+            foot: `+${formatCompact(stats.today_comments)} 今日`,
+            up: true,
+          },
+        ]
+      : [
+          {
+            icon: <TrendingUp size={12.5} />,
+            label: "今日新帖",
+            value: formatCompact(stats.today_posts),
+            foot: "本日新增",
+            up: stats.today_posts > 0,
+          },
+        ]),
     {
       icon: <Activity size={12.5} />,
       label: "在线用户",
@@ -138,7 +158,7 @@ function Announcements({ items }: { items: AnnouncementSummary[] }) {
 
 /* ---------- 热门榜 ---------- */
 
-function HotRanking({ posts }: { posts: PostListItem[] }) {
+function HotRanking({ posts, allowComments }: { posts: PostListItem[]; allowComments: boolean }) {
   return (
     <section className="j13-module" aria-label="热门讨论">
       <p className="j13-module-title mb-1.5">
@@ -157,9 +177,11 @@ function HotRanking({ posts }: { posts: PostListItem[] }) {
                     {p.title}
                   </span>
                   <span className="mt-1 flex items-center gap-2.5 meta text-[11.5px]">
-                    <span className="inline-flex items-center gap-1">
-                      <MessageCircle size={11.5} /> {p.comment_count}
-                    </span>
+                    {allowComments ? (
+                      <span className="inline-flex items-center gap-1">
+                        <MessageCircle size={11.5} /> {p.comment_count}
+                      </span>
+                    ) : null}
                     <span className="inline-flex items-center gap-1">
                       <Heart size={11.5} /> {p.like_count}
                     </span>
@@ -211,7 +233,7 @@ function NewUsers({ users }: { users: NewUser[] }) {
 
 /* ---------- 活跃成员（本周发帖 / 回复） ---------- */
 
-function ActiveUsers({ users }: { users: ActiveUser[] }) {
+function ActiveUsers({ users, allowComments }: { users: ActiveUser[]; allowComments: boolean }) {
   return (
     <section className="j13-module" aria-label="本周活跃成员">
       <p className="j13-module-title mb-2">
@@ -241,17 +263,23 @@ function ActiveUsers({ users }: { users: ActiveUser[] }) {
                       <span className="inline-flex items-center gap-1">
                         <PenLine size={10.5} /> 发帖 {u.post_count}
                       </span>
-                      <span className="inline-flex items-center gap-1">
-                        <MessageCircle size={10.5} /> 回复 {u.comment_count}
-                      </span>
+                      {allowComments ? (
+                        <span className="inline-flex items-center gap-1">
+                          <MessageCircle size={10.5} /> 回复 {u.comment_count}
+                        </span>
+                      ) : null}
                     </span>
                   </span>
                   <span
                     className="shrink-0 text-[13px] tabular-nums"
                     style={{ color: "var(--accent)" }}
-                    aria-label={`本周共 ${u.post_count + u.comment_count} 次互动`}
+                    aria-label={
+                      allowComments
+                        ? `本周共 ${u.post_count + u.comment_count} 次互动`
+                        : `本周发帖 ${u.post_count}`
+                    }
                   >
-                    {u.post_count + u.comment_count}
+                    {allowComments ? u.post_count + u.comment_count : u.post_count}
                   </span>
                 </Link>
               </li>
@@ -309,46 +337,44 @@ type PanelsProps = {
   announcements: AnnouncementSummary[];
   newUsers: NewUser[];
   checkin?: CheckinStatus | null;
+  allowComments: boolean;
 };
 
-export function CommunityPanels({
+function CommunityPanelsBody({
   stats,
   hot,
   activeUsers,
   announcements,
   newUsers,
   checkin,
+  allowComments,
 }: PanelsProps) {
+  return (
+    <>
+      <PulseCard stats={stats} checkin={checkin} allowComments={allowComments} />
+      <Announcements items={announcements} />
+      <HotRanking posts={hot} allowComments={allowComments} />
+      <NewUsers users={newUsers} />
+      <ActiveUsers users={activeUsers} allowComments={allowComments} />
+      <FriendLinks />
+    </>
+  );
+}
+
+export function CommunityPanels(props: PanelsProps) {
   return (
     <aside className="hidden w-[280px] shrink-0 lg:block xl:w-[300px]" aria-label="社区面板">
       <div className="sticky top-24 space-y-4">
-        <PulseCard stats={stats} checkin={checkin} />
-        <Announcements items={announcements} />
-        <HotRanking posts={hot} />
-        <NewUsers users={newUsers} />
-        <ActiveUsers users={activeUsers} />
-        <FriendLinks />
+        <CommunityPanelsBody {...props} />
       </div>
     </aside>
   );
 }
 
-export function CommunityPanelsMobile({
-  stats,
-  hot,
-  activeUsers,
-  announcements,
-  newUsers,
-  checkin,
-}: PanelsProps) {
+export function CommunityPanelsMobile(props: PanelsProps) {
   return (
     <div className="space-y-4 lg:hidden" aria-label="社区面板">
-      <PulseCard stats={stats} checkin={checkin} />
-      <Announcements items={announcements} />
-      <HotRanking posts={hot} />
-      <NewUsers users={newUsers} />
-      <ActiveUsers users={activeUsers} />
-      <FriendLinks />
+      <CommunityPanelsBody {...props} />
     </div>
   );
 }