sync(theme-2): 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-2 样式。

apps/admin/src/components/LeagueRowActions.vue

@@ -0,0 +1,98 @@
+<script setup lang="ts">
+export interface LeagueRowView {
+  id: string;
+  isPublished: boolean;
+  isPublishing: boolean;
+  labels: {
+    edit: string;
+    createFixture: string;
+    publish: string;
+    unpublish: string;
+    delete: string;
+  };
+}
+
+defineProps<{
+  row: LeagueRowView;
+}>();
+
+defineEmits<{
+  edit: [];
+  createFixture: [];
+  togglePublish: [];
+  archive: [];
+}>();
+</script>
+
+<template>
+  <div class="league-row-actions">
+    <div class="league-action-group">
+      <el-button size="small" type="primary" @click.stop="$emit('edit')">
+        {{ row.labels.edit }}
+      </el-button>
+      <el-button size="small" type="primary" @click.stop="$emit('createFixture')">
+        {{ row.labels.createFixture }}
+      </el-button>
+      <el-button
+        v-if="!row.isPublished"
+        size="small"
+        type="success"
+        :loading="row.isPublishing"
+        @click.stop="$emit('togglePublish')"
+      >
+        {{ row.labels.publish }}
+      </el-button>
+      <el-button
+        v-else
+        size="small"
+        type="warning"
+        :loading="row.isPublishing"
+        @click.stop="$emit('togglePublish')"
+      >
+        {{ row.labels.unpublish }}
+      </el-button>
+      <el-button size="small" type="danger" plain @click.stop="$emit('archive')">
+        {{ row.labels.delete }}
+      </el-button>
+    </div>
+  </div>
+</template>
+
+<style scoped>
+.league-row-actions {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 6px 8px;
+  flex-wrap: wrap;
+}
+
+.league-action-group {
+  display: inline-flex;
+  flex-wrap: wrap;
+  gap: 4px;
+  padding: 2px 4px;
+  border-radius: 8px;
+  background: #fbfaf7;
+  border: 1px solid var(--border-soft);
+}
+
+.league-row-actions :deep(.el-button) {
+  margin: 0 !important;
+  min-width: 52px;
+  min-height: 26px;
+  padding: 4px 10px !important;
+  font-size: 12px !important;
+  font-weight: 700;
+  border-radius: 6px;
+}
+
+.league-row-actions :deep(.el-button:not(.is-disabled):not(:disabled)) {
+  cursor: pointer;
+}
+
+.league-row-actions :deep(.el-button.is-disabled),
+.league-row-actions :deep(.el-button:disabled) {
+  cursor: not-allowed;
+}
+</style>