feat(admin): 独立后台壳、站点分析与聊天监管，公开站拆出主题切换与访问埋点

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

frontend/app/admin/content/page.tsx

@@ -25,7 +25,8 @@ function parseStatus(v?: string): AdminContentStatus {
 }
 
 function parseKind(v?: string): ContentKind {
-  return v === "comments" ? "comments" : "posts";
+  if (v === "comments") return "comments";
+  return "posts";
 }
 
 interface ContentPageProps {
@@ -48,35 +49,37 @@ export default async function AdminContentPage({ searchParams }: ContentPageProp
   let initialComments: AdminContentComment[] = [];
   let initialCommentsTotal = 0;
   let initError = "";
-  const [listSettled, counts] = await Promise.all([
-    initialKind === "comments"
-      ? fetchAdminContentComments(1, initialStatus, cookie || undefined)
-          .then((res) => ({ ok: true as const, kind: "comments" as const, res }))
-          .catch((e) => ({
-            ok: false as const,
-            error: e instanceof Error ? e.message : "获取内容列表失败",
-          }))
-      : fetchAdminContentPosts(1, initialStatus, cookie || undefined)
-          .then((res) => ({ ok: true as const, kind: "posts" as const, res }))
-          .catch((e) => ({
-            ok: false as const,
-            error: e instanceof Error ? e.message : "获取内容列表失败",
-          })),
-    fetchAdminContentCounts(cookie || undefined),
-  ]);
-  if (listSettled.ok) {
-    if (listSettled.kind === "posts") {
-      initialPosts = listSettled.res.posts;
-      initialPostsTotal = listSettled.res.total;
-    } else {
-      initialComments = listSettled.res.comments;
-      initialCommentsTotal = listSettled.res.total;
-    }
-  } else {
-    initError = listSettled.error;
-  }
 
-  const settings = await getPublicSettingsCached();
+  // PC 双栏同时展示：SSR 并行预取帖子与评论
+  const [postsSettled, commentsSettled, counts, settings] = await Promise.all([
+    fetchAdminContentPosts(1, initialStatus, cookie || undefined)
+      .then((res) => ({ ok: true as const, res }))
+      .catch((e) => ({
+        ok: false as const,
+        error: e instanceof Error ? e.message : "获取帖子失败",
+      })),
+    fetchAdminContentComments(1, initialStatus, cookie || undefined)
+      .then((res) => ({ ok: true as const, res }))
+      .catch((e) => ({
+        ok: false as const,
+        error: e instanceof Error ? e.message : "获取评论失败",
+      })),
+    fetchAdminContentCounts(cookie || undefined),
+    getPublicSettingsCached(),
+  ]);
+
+  if (postsSettled.ok) {
+    initialPosts = postsSettled.res.posts;
+    initialPostsTotal = postsSettled.res.total;
+  } else {
+    initError = postsSettled.error;
+  }
+  if (commentsSettled.ok) {
+    initialComments = commentsSettled.res.comments;
+    initialCommentsTotal = commentsSettled.res.total;
+  } else if (!initError) {
+    initError = commentsSettled.error;
+  }
 
   return (
     <ContentAdmin