feat(ui): 实现原生标签页与玻璃效果按钮组件

引入 NativeTabs 替代默认 Tabs 以支持原生标签栏样式，并添加 GlassButton 组件实现毛玻璃效果按钮。
移除对 useBottomTabBarHeight 的依赖，统一使用固定底部间距 60。
重构头像上传逻辑，使用新的 uploadImage API 替代 COS 直传方案。
更新 expo-router 至 ~6.0.1 版本以支持不稳定特性。

app/(tabs)/statistics.tsx

@@ -10,7 +10,6 @@ import { StressMeter } from '@/components/StressMeter';
 import WaterIntakeCard from '@/components/WaterIntakeCard';
 import { WeightHistoryCard } from '@/components/weight/WeightHistoryCard';
 import { Colors } from '@/constants/Colors';
-import { getTabBarBottomPadding } from '@/constants/TabBar';
 import { useAppDispatch, useAppSelector } from '@/hooks/redux';
 import { useAuthGuard } from '@/hooks/useAuthGuard';
 import { BackgroundTaskManager } from '@/services/backgroundTaskManager';
@@ -22,7 +21,6 @@ import { getMonthDaysZh, getTodayIndexInMonth } from '@/utils/date';
 import { ensureHealthPermissions, fetchHealthDataForDate, testHRVDataFetch } from '@/utils/health';
 import { getTestHealthData } from '@/utils/mockHealthData';
 import { calculateNutritionGoals } from '@/utils/nutrition';
-import { useBottomTabBarHeight } from '@react-navigation/bottom-tabs';
 import dayjs from 'dayjs';
 import { LinearGradient } from 'expo-linear-gradient';
 import { debounce } from 'lodash';
@@ -72,12 +70,8 @@ export default function ExploreScreen() {
 
   // 使用 dayjs：当月日期与默认选中"今天"
   const [selectedIndex, setSelectedIndex] = useState(getTodayIndexInMonth());
-  const tabBarHeight = useBottomTabBarHeight();
+  // const tabBarHeight = useBottomTabBarHeight();
   const insets = useSafeAreaInsets();
-  const bottomPadding = useMemo(() => {
-    return getTabBarBottomPadding(tabBarHeight) + (insets?.bottom ?? 0);
-  }, [tabBarHeight, insets?.bottom]);
-
   // 获取当前选中日期 - 使用 useMemo 缓存避免重复计算
   const currentSelectedDate = useMemo(() => {
     const days = getMonthDaysZh();
@@ -466,7 +460,7 @@ export default function ExploreScreen() {
         style={styles.scrollView}
         contentContainerStyle={{
           paddingTop: insets.top,
-          paddingBottom: bottomPadding,
+          paddingBottom: 60,
           paddingHorizontal: 20
         }}
         showsVerticalScrollIndicator={false}