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/lib/api.ts

@@ -609,6 +609,8 @@ export interface PublicSettings {
   anim_smooth_scroll: boolean;
   /** 装饰入场子开关；缺省 true */
   anim_chrome: boolean;
+  /** 帖内 Markdown 外链是否新标签打开；缺省 true */
+  post_link_new_tab: boolean;
 }
 
 const DEFAULT_PUBLIC_SETTINGS: PublicSettings = {
@@ -625,6 +627,7 @@ const DEFAULT_PUBLIC_SETTINGS: PublicSettings = {
   anim_code_fold: true,
   anim_smooth_scroll: true,
   anim_chrome: true,
+  post_link_new_tab: true,
 };
 
 function normalizePublicSettings(data: Partial<PublicSettings> | null | undefined): PublicSettings {
@@ -653,6 +656,7 @@ function normalizePublicSettings(data: Partial<PublicSettings> | null | undefine
     anim_code_fold: data?.anim_code_fold !== false,
     anim_smooth_scroll: data?.anim_smooth_scroll !== false,
     anim_chrome: data?.anim_chrome !== false,
+    post_link_new_tab: data?.post_link_new_tab !== false,
   };
 }
 
@@ -869,6 +873,133 @@ export interface EconomyStats {
   escrowed_points: number;
   posts_by_type: Record<string, number>;
   recent_ledger: PointLedgerItem[];
+  checkin_series?: { date: string; count: number }[];
+  ledger_by_reason?: { key: string; label: string; count: number }[];
+  delta_series?: { date: string; granted: number; spent: number }[];
+  net_delta_7d?: number;
+}
+
+export interface AnalyticsDayCount {
+  date: string;
+  count: number;
+}
+
+export interface AnalyticsVisitDay {
+  date: string;
+  pv: number;
+  uv: number;
+}
+
+export interface AnalyticsNamedCount {
+  key: string;
+  label: string;
+  count: number;
+}
+
+export interface AnalyticsTopViewPost {
+  id: number;
+  title: string;
+  view_count: number;
+  board_id: number;
+}
+
+export interface AnalyticsOverview {
+  range_days: number;
+  today_pv: number;
+  today_uv: number;
+  visits: AnalyticsVisitDay[];
+  posts_series: AnalyticsDayCount[];
+  comments_series: AnalyticsDayCount[];
+  registers_series: AnalyticsDayCount[];
+  boards: AnalyticsNamedCount[];
+  post_types: AnalyticsNamedCount[];
+  top_viewed: AnalyticsTopViewPost[];
+}
+
+export async function fetchAdminAnalytics(
+  cookieHeader?: string,
+  range: "7d" | "30d" = "7d"
+): Promise<AnalyticsOverview> {
+  const res = await fetch(
+    `${API_BASE}/api/admin/analytics/overview?range=${range}`,
+    ssrInit(cookieHeaders(cookieHeader))
+  );
+  if (!res.ok) throw new Error("failed");
+  return res.json();
+}
+
+export async function apiAdminAnalytics(range: "7d" | "30d" = "7d"): Promise<AnalyticsOverview> {
+  const res = await fetchWithRefresh(`/api/admin/analytics/overview?range=${range}`, {
+    method: "GET",
+    headers: clientHeaders(),
+  });
+  if (!res.ok) throw new Error("failed");
+  return res.json();
+}
+
+export async function apiTelemetryPageView(): Promise<void> {
+  try {
+    await fetchWithRefresh("/api/telemetry/pageview", {
+      method: "POST",
+      headers: clientHeaders(),
+    });
+  } catch {
+    /* 埋点失败不影响浏览 */
+  }
+}
+
+export type AdminChatRoomType = "group" | "direct";
+
+export interface AdminChatParticipant {
+  id: number;
+  name: string;
+  avatar: string;
+}
+
+export interface AdminChatMessage {
+  id: number;
+  room_id: number;
+  room_name: string;
+  room_type?: AdminChatRoomType;
+  is_default: boolean;
+  sender_id: number;
+  sender_name: string;
+  sender_avatar: string;
+  participants?: AdminChatParticipant[];
+  content: string;
+  recalled_at?: string | null;
+  created_at: string;
+}
+
+export async function apiAdminChatMessages(
+  page = 1,
+  q = "",
+  roomType: AdminChatRoomType = "group"
+): Promise<{
+  messages: AdminChatMessage[];
+  total: number;
+  page: number;
+}> {
+  const params = new URLSearchParams({
+    page: String(page),
+    room_type: roomType,
+  });
+  if (q.trim()) params.set("q", q.trim());
+  const res = await fetchWithRefresh(`/api/admin/chat/messages?${params}`, {
+    method: "GET",
+    headers: clientHeaders(),
+  });
+  const data = await res.json().catch(() => ({}));
+  if (!res.ok) throw new Error(data.error || "获取聊天消息失败");
+  return data;
+}
+
+export async function apiAdminRecallChatMessage(roomId: number, mid: number) {
+  const res = await fetchWithRefresh(`/api/admin/chat/rooms/${roomId}/messages/${mid}`, {
+    method: "DELETE",
+    headers: clientHeaders(),
+  });
+  return res.json();
 }
 
 export async function apiAdminEconomyStats(): Promise<EconomyStats & { error?: string }> {
@@ -1325,6 +1456,7 @@ export interface AdminUser {
   role: string; // user | board_admin | admin | super_admin | owner
   board_ids: number[]; // 板块管理员的授权板块
   banned: boolean;
+  points?: number;
   post_count: number;
   comment_count: number;
   created_at: string;
@@ -1619,6 +1751,7 @@ export type UpdateSiteSettingsBody = {
   anim_code_fold?: boolean;
   anim_smooth_scroll?: boolean;
   anim_chrome?: boolean;
+  post_link_new_tab?: boolean;
 };
 
 // 更新站点设置（字段可选）；accent 传空串恢复默认主题色

frontend/lib/realtime.ts

@@ -52,6 +52,7 @@ export interface RtSettingsData {
   anim_code_fold?: boolean;
   anim_smooth_scroll?: boolean;
   anim_chrome?: boolean;
+  post_link_new_tab?: boolean;
 }
 
 // 群聊新消息：data 为落库的 ChatMessage（含 sender）