feat: 更新 CoachScreen 和欢迎消息生成逻辑

- 在 CoachScreen 中优化欢迎消息的生成，整合用户配置文件数据，支持选择选项和表情
- 更新欢迎消息生成函数，返回包含内容、选择和交互类型的结构
- 在多个组件中调整样式，提升用户体验和界面一致性
- 在 Statistics 组件中添加记录更新时间，确保数据展示的准确性
- 在 FitnessRingsCard 中修正卡路里和运动时间的显示，确保数值四舍五入

app/(tabs)/coach.tsx

@@ -65,6 +65,7 @@ type AiChoiceOption = {
   label: string;
   value: any;
   recommended?: boolean;
+  emoji?: string;
 };
 
 // 餐次类型
@@ -256,13 +257,17 @@ export default function CoachScreen() {
   // 初始化欢迎消息
   const initializeWelcomeMessage = useCallback(() => {
     const { transformedUserProfile, paramsName, hasRecordedMoodTodayValue } = latestValuesRef.current;
+    const welcomeData = generateWelcomeMessage({
+      userProfile: transformedUserProfile,
+      hasRecordedMoodToday: hasRecordedMoodTodayValue
+    });
+
     const welcomeMessage: ChatMessage = {
       id: 'm_welcome',
       role: 'assistant',
-      content: generateWelcomeMessage({
-        userProfile: transformedUserProfile,
-        hasRecordedMoodToday: hasRecordedMoodTodayValue
-      }),
+      content: welcomeData.content,
+      choices: welcomeData.choices,
+      interactionType: welcomeData.interactionType,
     };
     setMessages([welcomeMessage]);
   }, []); // 空依赖项，通过 ref 获取最新值
@@ -402,7 +407,7 @@ export default function CoachScreen() {
   useEffect(() => {
     // 确保用户已登录且消息已加载
     if (!isLoggedIn || messages.length === 0) return;
-    
+
     // 检查是否有动作参数
     if (params.action) {
       const executeAction = async () => {
@@ -419,7 +424,7 @@ export default function CoachScreen() {
                 await sendStream(message);
               }
               break;
-              
+
             case 'weight':
               if (params.subAction === 'card') {
                 // 插入体重记录卡片
@@ -430,12 +435,12 @@ export default function CoachScreen() {
                 await sendStream(message);
               }
               break;
-              
+
             case 'mood':
               // 跳转到心情记录页面
               pushIfAuthedElseLogin('/mood/calendar');
               break;
-              
+
             default:
               console.warn('未知的动作类型:', params.action);
           }
@@ -573,14 +578,21 @@ export default function CoachScreen() {
           attachments: undefined,
         }));
       setConversationId(detail.conversationId);
-      setMessages(mapped.length ? mapped : [{
-        id: 'm_welcome',
-        role: 'assistant',
-        content: generateWelcomeMessage({
+      if (mapped.length) {
+        setMessages(mapped);
+      } else {
+        const welcomeData = generateWelcomeMessage({
           userProfile: transformedUserProfile,
           hasRecordedMoodToday: hasRecordedMoodTodayValue
-        })
-      }]);
+        });
+        setMessages([{
+          id: 'm_welcome',
+          role: 'assistant',
+          content: welcomeData.content,
+          choices: welcomeData.choices,
+          interactionType: welcomeData.interactionType,
+        }]);
+      }
       setHistoryVisible(false);
       setTimeout(scrollToEnd, 0);
     } catch (e) {
@@ -597,13 +609,16 @@ export default function CoachScreen() {
             await deleteConversation(id);
             if (conversationId === id) {
               setConversationId(undefined);
+              const welcomeData = generateWelcomeMessage({
+                userProfile: transformedUserProfile,
+                hasRecordedMoodToday: hasRecordedMoodTodayValue
+              });
               setMessages([{
                 id: 'm_welcome',
                 role: 'assistant',
-                content: generateWelcomeMessage({
-                  userProfile: transformedUserProfile,
-                  hasRecordedMoodToday: hasRecordedMoodTodayValue
-                })
+                content: welcomeData.content,
+                choices: welcomeData.choices,
+                interactionType: welcomeData.interactionType,
               }]);
             }
             await refreshHistory(historyPage);
@@ -1501,9 +1516,9 @@ export default function CoachScreen() {
     }
 
     // 检查是否有选择选项需要显示
-    if (item.choices && item.choices.length > 0 && item.interactionType === 'food_confirmation') {
+    if (item.choices && item.choices.length > 0 && (item.interactionType === 'food_confirmation' || item.interactionType === 'selection')) {
       return (
-        <View style={{ gap: 12 }}>
+        <View style={{ gap: 12, width: '100%' }}>
           <Markdown style={markdownStyles} mergeStyle>
             {item.content || ''}
           </Markdown>
@@ -1533,14 +1548,19 @@ export default function CoachScreen() {
                   }}
                 >
                   <View style={styles.choiceContent}>
-                    <Text style={[
-                      styles.choiceLabel,
-                      choice.recommended && styles.choiceLabelRecommended,
-                      isSelected && styles.choiceLabelSelected,
-                      isDisabled && styles.choiceLabelDisabled,
-                    ]}>
-                      {choice.label}
-                    </Text>
+                    <View style={{ flexDirection: 'row', alignItems: 'center', gap: 8, flex: 1 }}>
+                      {choice.emoji && (
+                        <Text style={{ fontSize: 16 }}>{choice.emoji}</Text>
+                      )}
+                      <Text style={[
+                        styles.choiceLabel,
+                        choice.recommended && styles.choiceLabelRecommended,
+                        isSelected && styles.choiceLabelSelected,
+                        isDisabled && styles.choiceLabelDisabled,
+                      ]}>
+                        {choice.label}
+                      </Text>
+                    </View>
                     <View style={styles.choiceStatusContainer}>
                       {choice.recommended && !isSelected && (
                         <View style={styles.recommendedBadge}>
@@ -1811,7 +1831,7 @@ export default function CoachScreen() {
       setPendingChoiceConfirmation(prev => ({ ...prev, [message.id]: true }));
 
       // 构建确认请求
-      const confirmationText = `我选择记录${choice.label}`;
+      const confirmationText = `${choice.label}`;
 
       try {
         // 发送确认消息，包含选择的数据
@@ -2644,6 +2664,7 @@ const styles = StyleSheet.create({
   // 选择选项相关样式
   choicesContainer: {
     gap: 8,
+    width: '100%',
   },
   choiceButton: {
     backgroundColor: 'rgba(255,255,255,0.9)',
@@ -2651,6 +2672,8 @@ const styles = StyleSheet.create({
     borderColor: '#7a5af84d', // 紫色主题 30% opacity
     borderRadius: 12,
     padding: 12,
+    width: '100%',
+    minWidth: 0,
   },
   choiceButtonRecommended: {
     borderColor: '#7a5af899', // 紫色主题 60% opacity
@@ -2670,12 +2693,14 @@ const styles = StyleSheet.create({
     flexDirection: 'row',
     alignItems: 'center',
     justifyContent: 'space-between',
+    width: '100%',
   },
   choiceLabel: {
     fontSize: 15,
     fontWeight: '600',
     color: '#192126',
     flex: 1,
+    flexWrap: 'wrap',
   },
   choiceLabelRecommended: {
     color: '#19b36e', // success[500]

app/(tabs)/statistics.tsx

@@ -256,6 +256,7 @@ export default function ExploreScreen() {
 
       if (data.records.length > 0) {
         const summary = calculateNutritionSummary(data.records);
+        summary.updatedAt = data.records[0].updatedAt;
         setNutritionSummary(summary);
       } else {
         setNutritionSummary(null);