sync(theme-3): 同步 main 最新 API/Admin 与玩家端逻辑

从 main 同步站内信手动发送、媒体库选择、列表子路由重构等 API/Admin 改动；玩家端仅合并 ADMIN_CUSTOM 富文本、消息预览与充值截图压缩逻辑，保留 theme-3 样式。

apps/admin/src/utils/matchesListState.ts

@@ -1,10 +1,8 @@
-/** 赛事列表 UI 状态（返回列表时恢复展开等） */
+/** 赛事列表 UI 状态（返回列表时恢复筛选与分页） */
 
 const STORAGE_KEY = 'admin_matches_list_ui';
-export const MAX_EXPANDED_LEAGUES = 3;
 
 export type MatchesListUiState = {
-  expandedLeagueIds: string[];
   page: number;
   pageSize: number;
   filterStatus: string;
@@ -13,7 +11,6 @@ export type MatchesListUiState = {
 
 function defaultState(): MatchesListUiState {
   return {
-    expandedLeagueIds: [],
     page: 1,
     pageSize: 10,
     filterStatus: '',
@@ -21,44 +18,21 @@ function defaultState(): MatchesListUiState {
   };
 }
 
-function capExpanded(ids: string[]): string[] {
-  return ids.slice(0, MAX_EXPANDED_LEAGUES);
-}
-
 export function readMatchesListUiState(): MatchesListUiState | null {
   try {
     const raw = sessionStorage.getItem(STORAGE_KEY);
     if (!raw) return null;
-    const parsed = JSON.parse(raw) as MatchesListUiState;
-    if (!Array.isArray(parsed.expandedLeagueIds)) return null;
-    return {
-      ...parsed,
-      expandedLeagueIds: capExpanded(parsed.expandedLeagueIds),
-    };
+    return JSON.parse(raw) as MatchesListUiState;
   } catch {
     return null;
   }
 }
 
 export function writeMatchesListUiState(state: MatchesListUiState) {
-  sessionStorage.setItem(
-    STORAGE_KEY,
-    JSON.stringify({
-      ...state,
-      expandedLeagueIds: capExpanded(state.expandedLeagueIds),
-    }),
-  );
+  sessionStorage.setItem(STORAGE_KEY, JSON.stringify(state));
 }
 
 export function patchMatchesListUiState(patch: Partial<MatchesListUiState>) {
   const base = readMatchesListUiState() ?? defaultState();
   writeMatchesListUiState({ ...base, ...patch });
 }
-
-/** 从子页返回前确保该赛事行处于展开记录中 */
-export function ensureLeagueExpanded(leagueId: string) {
-  if (!leagueId) return;
-  const base = readMatchesListUiState() ?? defaultState();
-  const ids = capExpanded([...new Set([...base.expandedLeagueIds, leagueId])]);
-  writeMatchesListUiState({ ...base, expandedLeagueIds: ids });
-}