feat(player): 注册账号、登录双模式与移动端性能优化

注册必填 7-32 位账号，手机号区号/本地号分存；登录默认账号模式并支持切换手机号登录；Player i18n 拆包与赛事接口优化。

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

apps/player/src/components/BannerCarousel.vue

@@ -128,6 +128,7 @@ onUnmounted(stopAutoPlay);
               :src="imageUrl(banner)"
               :alt="title(banner)"
               class="slide-img"
+              :loading="i === 0 ? 'eager' : 'lazy'"
               @error="onImgError"
             />
             <div v-else class="slide-fallback">{{ title(banner) }}</div>