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/BoardPanels.tsx

@@ -85,9 +85,11 @@ function BoardIntro({ board }: { board: BoardWithCount }) {
 function BoardPulse({
   stats,
   checkin,
+  allowComments,
 }: {
   stats: BoardSidebarStats;
   checkin?: CheckinStatus | null;
+  allowComments: boolean;
 }) {
   const cells = [
     {
@@ -104,20 +106,24 @@ function BoardPulse({
       foot: "本日新增",
       up: stats.today_posts > 0,
     },
-    {
-      icon: <MessageCircle size={12.5} />,
-      label: "回复总数",
-      value: formatCompact(stats.comment_count),
-      foot: `+${formatCompact(stats.today_comments)} 今日`,
-      up: true,
-    },
-    {
-      icon: <Heart size={12.5} />,
-      label: "今日回复",
-      value: formatCompact(stats.today_comments),
-      foot: "本日新增",
-      up: stats.today_comments > 0,
-    },
+    ...(allowComments
+      ? [
+          {
+            icon: <MessageCircle size={12.5} />,
+            label: "回复总数",
+            value: formatCompact(stats.comment_count),
+            foot: `+${formatCompact(stats.today_comments)} 今日`,
+            up: true,
+          },
+          {
+            icon: <Heart size={12.5} />,
+            label: "今日回复",
+            value: formatCompact(stats.today_comments),
+            foot: "本日新增",
+            up: stats.today_comments > 0,
+          },
+        ]
+      : []),
   ];
   return (
     <section className="j13-module" aria-label="板块数据">
@@ -150,7 +156,7 @@ function BoardPulse({
 
 /* ---------- 4. 本板热门 ---------- */
 
-function BoardHot({ posts }: { posts: PostListItem[] }) {
+function BoardHot({ posts, allowComments }: { posts: PostListItem[]; allowComments: boolean }) {
   return (
     <section className="j13-module" aria-label="本板热门">
       <p className="j13-module-title mb-1.5">
@@ -169,9 +175,11 @@ function BoardHot({ 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>
@@ -188,7 +196,7 @@ function BoardHot({ posts }: { posts: PostListItem[] }) {
 
 /* ---------- 5. 本板活跃 ---------- */
 
-function BoardActive({ users }: { users: ActiveUser[] }) {
+function BoardActive({ users, allowComments }: { users: ActiveUser[]; allowComments: boolean }) {
   return (
     <section className="j13-module" aria-label="本板活跃成员">
       <p className="j13-module-title mb-2">
@@ -221,17 +229,23 @@ function BoardActive({ 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>
@@ -252,6 +266,7 @@ type BoardPanelsProps = {
   hot: PostListItem[];
   activeUsers: ActiveUser[];
   checkin?: CheckinStatus | null;
+  allowComments: boolean;
 };
 
 function BoardPanelsBody(props: BoardPanelsProps) {
@@ -259,9 +274,9 @@ function BoardPanelsBody(props: BoardPanelsProps) {
     <>
       <Moderators items={props.moderators} />
       <BoardIntro board={props.board} />
-      <BoardPulse stats={props.stats} checkin={props.checkin} />
-      <BoardHot posts={props.hot} />
-      <BoardActive users={props.activeUsers} />
+      <BoardPulse stats={props.stats} checkin={props.checkin} allowComments={props.allowComments} />
+      <BoardHot posts={props.hot} allowComments={props.allowComments} />
+      <BoardActive users={props.activeUsers} allowComments={props.allowComments} />
     </>
   );
 }