feat: 添加教练功能和更新用户界面

- 新增教练页面，用户可以与教练进行互动和咨询
- 更新首页，切换到教练 tab 并传递名称参数
- 优化个人信息页面，添加注销帐号和退出登录功能
- 更新隐私政策和用户协议的链接，确保用户在使用前同意相关条款
- 修改今日训练页面标题为“开始训练”，提升用户体验
- 删除不再使用的进度条组件，简化代码结构

app/(tabs)/_layout.tsx

@@ -18,6 +18,7 @@ export default function TabLayout() {
       screenOptions={({ route }) => {
         const routeName = route.name;
         const isSelected = (routeName === 'index' && pathname === '/') ||
+          (routeName === 'coach' && pathname === '/coach') ||
           (routeName === 'explore' && pathname === '/explore') ||
           pathname.includes(routeName);
 
@@ -39,6 +40,8 @@ export default function TabLayout() {
               switch (routeName) {
                 case 'index':
                   return { icon: 'house.fill', title: '首页' } as const;
+                case 'coach':
+                  return { icon: 'person.3.fill', title: '教练' } as const;
                 case 'explore':
                   return { icon: 'paperplane.fill', title: '探索' } as const;
                 case 'personal':
@@ -150,6 +153,34 @@ export default function TabLayout() {
           },
         }}
       />
+      <Tabs.Screen
+        name="coach"
+        options={{
+          title: '教练',
+          tabBarIcon: ({ color }) => {
+            const isCoachSelected = pathname === '/coach';
+            return (
+              <View style={{ flexDirection: 'row', alignItems: 'center' }}>
+                <IconSymbol size={22} name="person.3.fill" color={color} />
+                {isCoachSelected && (
+                  <Text
+                    numberOfLines={1}
+                    style={{
+                      color: color,
+                      fontSize: 12,
+                      fontWeight: '600',
+                      marginLeft: 6,
+                      textAlign: 'center',
+                      flexShrink: 0,
+                    }}>
+                    教练
+                  </Text>
+                )}
+              </View>
+            );
+          },
+        }}
+      />
       <Tabs.Screen
         name="explore"
         options={{

app/(tabs)/index.tsx

@@ -75,9 +75,8 @@ export default function HomeScreen() {
       const snapX = distLeft <= distRight ? minX : maxX;
       Animated.spring(pan, { toValue: { x: snapX, y: clampedY }, useNativeDriver: false, bounciness: 6 }).start(() => {
         if (!dragState.current.moved) {
-          // Treat as tap
-          // @ts-ignore - expo-router string ok
-          router.push('/ai-coach-chat?name=Iris' as any);
+          // 切换到教练 tab，并传递name参数
+          router.push('/coach?name=Iris' as any);
         }
       });
     },
@@ -91,7 +90,6 @@ export default function HomeScreen() {
       title: string;
       subtitle: string;
       level?: '初学者' | '中级' | '高级';
-      progress: number;
       onPress?: () => void;
     }
     | {
@@ -115,7 +113,6 @@ export default function HomeScreen() {
         title: '今日训练',
         subtitle: '完成一次普拉提训练，记录你的坚持',
         level: '初学者',
-        progress: 0,
         onPress: () => pushIfAuthedElseLogin('/workout/today'),
       },
       {
@@ -126,7 +123,6 @@ export default function HomeScreen() {
         title: '体态评估',
         subtitle: '评估你的体态，制定训练计划',
         level: '初学者',
-        progress: 0,
         onPress: () => router.push('/ai-posture-assessment'),
       },
       ...listRecommendedArticles().map((a) => ({
@@ -194,7 +190,6 @@ export default function HomeScreen() {
               image: 'https://plates-1251306435.cos.ap-guangzhou.myqcloud.com/images/imagedemo.jpeg',
               title: c.title || '今日训练',
               subtitle: c.subtitle || '完成一次普拉提训练，记录你的坚持',
-              progress: 0,
               onPress: () => pushIfAuthedElseLogin('/workout/today'),
             });
           }
@@ -282,6 +277,22 @@ export default function HomeScreen() {
             <ThemedText style={styles.sectionTitle}>热点功能</ThemedText>
 
             <View style={styles.featureGrid}>
+
+            <Pressable
+                style={[styles.featureCard, styles.featureCardQuinary]}
+                onPress={() => pushIfAuthedElseLogin('/workout/today')}
+              >
+                <View style={styles.featureIconWrapper}>
+                  <View style={styles.featureIconPlaceholder}>
+                  <Image
+                    source={require('@/assets/images/icons/iconWorkout.png')}
+                    style={styles.featureIconImage}
+                  />
+                  </View>
+                </View>
+                <ThemedText style={styles.featureTitle}>训练</ThemedText>
+              </Pressable>
+
               <Pressable
                 style={[styles.featureCard, styles.featureCardPrimary]}
                 onPress={() => router.push('/ai-posture-assessment')}
@@ -292,7 +303,7 @@ export default function HomeScreen() {
                     style={styles.featureIconImage}
                   />
                 </View>
-                <ThemedText style={styles.featureTitle}>AI体态评估</ThemedText>
+                <ThemedText style={styles.featureTitle}>体态</ThemedText>
               </Pressable>
 
               <Pressable
@@ -307,8 +318,11 @@ export default function HomeScreen() {
                   />
                   </View>
                 </View>
-                <ThemedText style={styles.featureTitle}>计划管理</ThemedText>
+                <ThemedText style={styles.featureTitle}>计划</ThemedText>
               </Pressable>
+
+
+       
             </View>
           </View>
 
@@ -344,7 +358,6 @@ export default function HomeScreen() {
                     title={item.title}
                     subtitle={item.subtitle}
                     level={item.level}
-                    progress={item.progress}
                   />
                 );
                 return item.onPress ? (
@@ -490,6 +503,9 @@ const styles = StyleSheet.create({
   featureCardQuaternary: {
     backgroundColor: '#fa709a',
   },
+  featureCardQuinary: {
+    backgroundColor: '#f59e0b',
+  },
   featureIconWrapper: {
     width: 32,
     height: 32,

app/(tabs)/personal.tsx

@@ -1,23 +1,23 @@
+import { PRIVACY_POLICY_URL, USER_AGREEMENT_URL } from '@/constants/Agree';
 import { Colors } from '@/constants/Colors';
 import { getTabBarBottomPadding } from '@/constants/TabBar';
 import { useAppDispatch, useAppSelector } from '@/hooks/redux';
+import { useAuthGuard } from '@/hooks/useAuthGuard';
 import { useColorScheme } from '@/hooks/useColorScheme';
-import { api } from '@/services/api';
-import { DEFAULT_MEMBER_NAME, fetchMyProfile, logout } from '@/store/userSlice';
+import { DEFAULT_MEMBER_NAME, fetchMyProfile } from '@/store/userSlice';
 import { Ionicons } from '@expo/vector-icons';
 import AsyncStorage from '@react-native-async-storage/async-storage';
 import { useBottomTabBarHeight } from '@react-navigation/bottom-tabs';
 import { useFocusEffect } from '@react-navigation/native';
-import type { Href } from 'expo-router';
-import { router } from 'expo-router';
 import React, { useMemo, useState } from 'react';
-import { Alert, Image, SafeAreaView, ScrollView, StatusBar, StyleSheet, Switch, Text, TouchableOpacity, View } from 'react-native';
+import { Alert, Image, Linking, SafeAreaView, ScrollView, StatusBar, StyleSheet, Switch, Text, TouchableOpacity, View } from 'react-native';
 import { useSafeAreaInsets } from 'react-native-safe-area-context';
 
 const DEFAULT_AVATAR_URL = 'https://plates-1251306435.cos.ap-guangzhou.myqcloud.com/images/avatar/avatarGirl01.jpeg';
 
 export default function PersonalScreen() {
   const dispatch = useAppDispatch();
+  const { confirmLogout, confirmDeleteAccount, isLoggedIn, pushIfAuthedElseLogin } = useAuthGuard();
   const insets = useSafeAreaInsets();
   const tabBarHeight = useBottomTabBarHeight();
   const colorScheme = useColorScheme();
@@ -95,32 +95,7 @@ export default function PersonalScreen() {
 
 
 
-  const handleDeleteAccount = () => {
-    Alert.alert(
-      '确认注销帐号',
-      '此操作不可恢复，将删除您的帐号及相关数据。确定继续吗？',
-      [
-        { text: '取消', style: 'cancel' },
-        {
-          text: '确认注销',
-          style: 'destructive',
-          onPress: async () => {
-            try {
-              await api.delete('/api/users/delete-account');
-              await AsyncStorage.multiRemove(['@user_personal_info']);
-              await dispatch(logout()).unwrap();
-              Alert.alert('帐号已注销', '您的帐号已成功注销');
-              router.replace('/auth/login');
-            } catch (err: any) {
-              const message = err?.message || '注销失败，请稍后重试';
-              Alert.alert('注销失败', message);
-            }
-          },
-        },
-      ],
-      { cancelable: true }
-    );
-  };
+
 
   const UserInfoSection = () => (
     <View style={[styles.userInfoCard, { backgroundColor: colorTokens.card }]}>
@@ -138,7 +113,7 @@ export default function PersonalScreen() {
         </View>
 
         {/* 编辑按钮 */}
-        <TouchableOpacity style={dynamicStyles.editButton} onPress={() => router.push('/profile/edit')}>
+        <TouchableOpacity style={dynamicStyles.editButton} onPress={() => pushIfAuthedElseLogin('/profile/edit')}>
           <Text style={dynamicStyles.editButtonText}>编辑</Text>
         </TouchableOpacity>
       </View>
@@ -170,7 +145,8 @@ export default function PersonalScreen() {
         <TouchableOpacity
           key={index}
           style={styles.menuItem}
-          onPress={item.onPress}
+          onPress={item.type === 'switch' ? undefined : item.onPress}
+          disabled={item.type === 'switch'}
         >
           <View style={styles.menuItemLeft}>
             <View style={[
@@ -187,8 +163,14 @@ export default function PersonalScreen() {
           </View>
           {item.type === 'switch' ? (
             <Switch
-              value={notificationEnabled}
-              onValueChange={setNotificationEnabled}
+              value={isLoggedIn ? notificationEnabled : false}
+              onValueChange={(value) => {
+                if (!isLoggedIn) {
+                  pushIfAuthedElseLogin('/profile/notification-settings');
+                  return;
+                }
+                setNotificationEnabled(value);
+              }}
               trackColor={{ false: '#E5E5E5', true: colors.primary }}
               thumbColor="#FFFFFF"
               style={styles.switch}
@@ -243,12 +225,20 @@ export default function PersonalScreen() {
         {
           icon: 'flag-outline' as const,
           title: '目标管理',
-          onPress: () => router.push('/profile/goals' as Href),
-        },
-        {
-          icon: 'stats-chart-outline' as const,
-          title: '训练进度',
+          onPress: () => pushIfAuthedElseLogin('/profile/goals'),
         },
+        // {
+        //   icon: 'stats-chart-outline' as const,
+        //   title: '训练进度',
+        //   onPress: () => {
+        //     // 训练进度页面暂未实现，先显示提示
+        //     if (isLoggedIn) {
+        //       Alert.alert('提示', '训练进度功能正在开发中');
+        //     } else {
+        //       pushIfAuthedElseLogin('/profile/training-progress');
+        //     }
+        //   },
+        // },
       ],
     },
     {
@@ -264,42 +254,36 @@ export default function PersonalScreen() {
     {
       title: '其他',
       items: [
-        {
-          icon: 'mail-outline' as const,
-          title: '联系我们',
-        },
         {
           icon: 'shield-checkmark-outline' as const,
           title: '隐私政策',
+          onPress: () => Linking.openURL(PRIVACY_POLICY_URL),
         },
         {
-          icon: 'settings-outline' as const,
-          title: '设置',
+          icon: 'document-text-outline' as const,
+          title: '用户协议',
+          onPress: () => Linking.openURL(USER_AGREEMENT_URL),
         },
       ],
     },
-    {
+    // 只有登录用户才显示账号与安全菜单
+    ...(isLoggedIn ? [{
       title: '账号与安全',
       items: [
+        {
+          icon: 'log-out-outline' as const,
+          title: '退出登录',
+          onPress: confirmLogout,
+          isDanger: false,
+        },
         {
           icon: 'trash-outline' as const,
           title: '注销帐号',
-          onPress: handleDeleteAccount,
+          onPress: confirmDeleteAccount,
           isDanger: true,
         },
       ],
-    },
-    {
-      title: '开发者',
-      items: [
-        {
-          icon: 'refresh-outline' as const,
-          title: '重置引导流程',
-          onPress: handleResetOnboarding,
-          isDanger: true,
-        },
-      ],
-    },
+    }] : []),
   ];
 
   return (
@@ -317,12 +301,6 @@ export default function PersonalScreen() {
             <MenuSection key={index} title={section.title} items={section.items} />
           ))}
 
-          {/* 底部浮动按钮 */}
-          <View style={[styles.floatingButtonContainer, { bottom: Math.max(30, tabBarHeight / 2) + (insets?.bottom ?? 0) }]}>
-            <TouchableOpacity style={dynamicStyles.floatingButton}>
-              <Ionicons name="search" size={24} color="#192126" />
-            </TouchableOpacity>
-          </View>
         </ScrollView>
       </SafeAreaView>
     </View>
@@ -430,6 +408,7 @@ const styles = StyleSheet.create({
   menuItemText: {
     fontSize: 16,
     flex: 1,
+    fontWeight: '600',
   },
   switch: {
     transform: [{ scaleX: 0.8 }, { scaleY: 0.8 }],

app/auth/login.tsx

@@ -3,11 +3,12 @@ import * as AppleAuthentication from 'expo-apple-authentication';
 import { LinearGradient } from 'expo-linear-gradient';
 import { useLocalSearchParams, useRouter } from 'expo-router';
 import React, { useCallback, useEffect, useMemo, useRef, useState } from 'react';
-import { Alert, Animated, Pressable, ScrollView, StyleSheet, Text, TouchableOpacity, View } from 'react-native';
+import { Alert, Animated, Linking, Pressable, ScrollView, StyleSheet, Text, TouchableOpacity, View } from 'react-native';
 import { SafeAreaView } from 'react-native-safe-area-context';
 
 import { ThemedText } from '@/components/ThemedText';
 import { ThemedView } from '@/components/ThemedView';
+import { PRIVACY_POLICY_URL, USER_AGREEMENT_URL } from '@/constants/Agree';
 import { Colors } from '@/constants/Colors';
 import { useAppDispatch } from '@/hooks/redux';
 import { useColorScheme } from '@/hooks/useColorScheme';
@@ -230,8 +231,8 @@ export default function LoginScreen() {
 
         <ScrollView contentContainerStyle={styles.content} showsVerticalScrollIndicator={false}>
           <View style={styles.headerWrap}>
-            <ThemedText style={[styles.title, { color: color.text }]}>数字普拉提</ThemedText>
-            <ThemedText style={[styles.subtitle, { color: color.textMuted }]}>欢迎登录</ThemedText>
+            <ThemedText style={[styles.title, { color: color.text }]}>普拉提助手</ThemedText>
+            <ThemedText style={[styles.subtitle, { color: color.textMuted }]}>欢迎登录普拉提星球</ThemedText>
           </View>
 
           {/* Apple 登录 */}
@@ -252,22 +253,6 @@ export default function LoginScreen() {
             </Pressable>
           )}
 
-          {/* 游客登录（弱化样式） */}
-          <Pressable
-            accessibilityRole="button"
-            onPress={() => guardAgreement(onGuestLogin)}
-            disabled={loading}
-            style={({ pressed }) => [
-              styles.guestButton,
-              { borderColor: color.border, backgroundColor: color.surface },
-              loading && { opacity: 0.7 },
-              pressed && { transform: [{ scale: 0.98 }] },
-            ]}
-          >
-            <Ionicons name="person-circle-outline" size={22} color={color.neutral200} style={{ marginRight: 8 }} />
-            <Text style={[styles.guestText, { color: color.neutral200 }]}>以游客身份继续</Text>
-          </Pressable>
-
           {/* 协议勾选 */}
           <View style={styles.agreementRow}>
             <Pressable onPress={() => setHasAgreed((v) => !v)} style={styles.checkboxWrap} accessibilityRole="checkbox" accessibilityState={{ checked: hasAgreed }}>
@@ -281,11 +266,11 @@ export default function LoginScreen() {
               </View>
             </Pressable>
             <Text style={[styles.agreementText, { color: color.textMuted }]}>我已阅读并同意</Text>
-            <Pressable onPress={() => router.push('/legal/privacy-policy')}>
+            <Pressable onPress={() => Linking.openURL(PRIVACY_POLICY_URL)}>
               <Text style={[styles.link, { color: color.primary }]}>《隐私政策》</Text>
             </Pressable>
             <Text style={[styles.agreementText, { color: color.textMuted }]}>和</Text>
-            <Pressable onPress={() => router.push('/legal/user-agreement')}>
+            <Pressable onPress={() => Linking.openURL(USER_AGREEMENT_URL)}>
               <Text style={[styles.link, { color: color.primary }]}>《用户协议》</Text>
             </Pressable>
           </View>

app/index.tsx

@@ -1,6 +1,5 @@
 import { ThemedView } from '@/components/ThemedView';
 import { useThemeColor } from '@/hooks/useThemeColor';
-import AsyncStorage from '@react-native-async-storage/async-storage';
 import { router } from 'expo-router';
 import React, { useEffect, useState } from 'react';
 import { ActivityIndicator, View } from 'react-native';
@@ -18,22 +17,24 @@ export default function SplashScreen() {
 
   const checkOnboardingStatus = async () => {
     try {
-      const onboardingCompleted = await AsyncStorage.getItem(ONBOARDING_COMPLETED_KEY);
+      // const onboardingCompleted = await AsyncStorage.getItem(ONBOARDING_COMPLETED_KEY);
 
-      if (onboardingCompleted === 'true') {
-        router.replace('/(tabs)');
-      } else {
-        router.replace('/onboarding');
-      }
-      setIsLoading(false);
+      // if (onboardingCompleted === 'true') {
+      //   router.replace('/(tabs)');
+      // } else {
+      //   router.replace('/onboarding');
+      // }
+      // setIsLoading(false);
+      router.replace('/(tabs)');
     } catch (error) {
       console.error('检查引导状态失败:', error);
       // 如果出现错误，默认显示引导页面
-      setTimeout(() => {
-        router.replace('/onboarding');
-        setIsLoading(false);
-      }, 1000);
+      // setTimeout(() => {
+      //   router.replace('/onboarding');
+      //   setIsLoading(false);
+      // }, 1000);
     }
+    setIsLoading(false);
   };
 
   if (!isLoading) {

app/workout/today.tsx

@@ -427,7 +427,7 @@ export default function TodayWorkoutScreen() {
 
       <SafeAreaView style={styles.contentWrapper}>
         <HeaderBar
-          title="快速训练"
+          title="开始训练"
           onBack={() => router.back()}
           withSafeTop={false}
           transparent={true}