feat: 添加训练计划和打卡功能

- 新增训练计划页面，允许用户制定个性化的训练计划
- 集成打卡功能，用户可以记录每日的训练情况
- 更新 Redux 状态管理，添加训练计划相关的 reducer
- 在首页中添加训练计划卡片，支持用户点击跳转
- 更新样式和布局，以适应新功能的展示和交互
- 添加日期选择器和相关依赖，支持用户选择训练日期

app/challenge/index.tsx

@@ -1,4 +1,6 @@
+import { HeaderBar } from '@/components/ui/HeaderBar';
 import { useAppDispatch, useAppSelector } from '@/hooks/redux';
+import { useAuthGuard } from '@/hooks/useAuthGuard';
 import { initChallenge } from '@/store/challengeSlice';
 import { estimateSessionMinutesWithCustom } from '@/utils/pilatesPlan';
 import { Ionicons } from '@expo/vector-icons';
@@ -9,6 +11,7 @@ import { Dimensions, FlatList, SafeAreaView, StyleSheet, Text, TouchableOpacity,
 export default function ChallengeHomeScreen() {
   const dispatch = useAppDispatch();
   const router = useRouter();
+  const { ensureLoggedIn } = useAuthGuard();
   const challenge = useAppSelector((s) => (s as any).challenge);
 
   useEffect(() => {
@@ -24,16 +27,8 @@ export default function ChallengeHomeScreen() {
   return (
     <SafeAreaView style={styles.safeArea}>
       <View style={styles.container}>
-        <View style={styles.header}> 
-          <View style={styles.headerRow}>
-            <TouchableOpacity onPress={() => router.back()} style={styles.backButton} accessibilityRole="button">
-              <Ionicons name="chevron-back" size={24} color="#111827" />
-            </TouchableOpacity>
-            <Text style={styles.headerTitle}>30天普拉提打卡</Text>
-            <View style={{ width: 32 }} />
-          </View>
-          <Text style={styles.subtitle}>专注核心、体态与柔韧 · 连续完成解锁徽章</Text>
-        </View>
+        <HeaderBar title="30天普拉提打卡" onBack={() => router.back()} withSafeTop={false} transparent />
+        <Text style={styles.subtitle}>专注核心、体态与柔韧 · 连续完成解锁徽章</Text>
 
         {/* 进度环与统计 */}
         <View style={styles.summaryCard}>
@@ -45,7 +40,7 @@ export default function ChallengeHomeScreen() {
           </View>
           <View style={styles.summaryRight}>
             <Text style={styles.summaryItem}><Text style={styles.summaryItemValue}>{challenge?.streak ?? 0}</Text> 天连续</Text>
-            <Text style={styles.summaryItem}><Text style={styles.summaryItemValue}>{(challenge?.days?.filter((d: any)=>d.status==='completed').length) ?? 0}</Text> / 30 完成</Text>
+            <Text style={styles.summaryItem}><Text style={styles.summaryItemValue}>{(challenge?.days?.filter((d: any) => d.status === 'completed').length) ?? 0}</Text> / 30 完成</Text>
           </View>
         </View>
 
@@ -64,7 +59,10 @@ export default function ChallengeHomeScreen() {
             return (
               <TouchableOpacity
                 disabled={isLocked}
-                onPress={() => router.push({ pathname: '/challenge/day', params: { day: String(plan.dayNumber) } })}
+                onPress={async () => {
+                  if (!(await ensureLoggedIn({ redirectTo: '/challenge', redirectParams: {} }))) return;
+                  router.push({ pathname: '/challenge/day', params: { day: String(plan.dayNumber) } });
+                }}
                 style={[styles.dayCell, isLocked && styles.dayCellLocked, isCompleted && styles.dayCellCompleted]}
                 activeOpacity={0.8}
               >
@@ -79,7 +77,10 @@ export default function ChallengeHomeScreen() {
 
         {/* 底部 CTA */}
         <View style={styles.bottomBar}>
-          <TouchableOpacity style={styles.startButton} onPress={() => router.push({ pathname: '/challenge/day', params: { day: String((challenge?.days?.find((d:any)=>d.status==='available')?.plan.dayNumber) || 1) } })}>
+          <TouchableOpacity style={styles.startButton} onPress={async () => {
+            if (!(await ensureLoggedIn({ redirectTo: '/challenge' }))) return;
+            router.push({ pathname: '/challenge/day', params: { day: String((challenge?.days?.find((d: any) => d.status === 'available')?.plan.dayNumber) || 1) } });
+          }}>
             <Text style={styles.startButtonText}>开始今日训练</Text>
           </TouchableOpacity>
         </View>