feat(player): 完善 H5 投注端与 API 演示数据

- 球赛/串关/优胜冠军、赛事详情、历史投注与个人资料编辑
- 固定顶栏、公告与底栏，仅内容区滚动
- 底部导航与站点 favicon 使用 logo，登录页精简
- API 种子、冠军盘与历史注单增强

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

apps/player/src/constants/defaultBanner.ts

@@ -0,0 +1,41 @@
+import type { BannerItem } from '../components/BannerCarousel.vue';
+
+/** 默认轮播首图：apps/player/src/assets/images/banner.png */
+import defaultBannerImg from '../assets/images/banner.png';
+
+const FALLBACK_BANNER_URL = '/uploads/banners/welcome.svg';
+
+export const DEFAULT_BANNER: BannerItem = {
+  id: 'default',
+  linkType: 'ROUTE',
+  linkTarget: '/bet',
+  translation: {
+    title: '',
+    imageUrl: defaultBannerImg,
+  },
+};
+
+function pickImageUrl(url?: string | null): string {
+  if (!url) return defaultBannerImg;
+  return url;
+}
+
+export function resolveBanners(banners: BannerItem[] | undefined | null): BannerItem[] {
+  const fromApi = (banners ?? []).map((banner) => ({
+    ...banner,
+    translation: {
+      ...banner.translation,
+      imageUrl: pickImageUrl(banner.translation?.imageUrl),
+    },
+  }));
+
+  const defaultSlide: BannerItem = {
+    ...DEFAULT_BANNER,
+    translation: {
+      ...DEFAULT_BANNER.translation,
+      imageUrl: defaultBannerImg || FALLBACK_BANNER_URL,
+    },
+  };
+
+  return [defaultSlide, ...fromApi];
+}