refactor: 优化前端功能屏幕

- 优化ConversationListScreen对话列表页面
- 优化LoginScreen登录页面
- 优化MyMemoirScreen我的回忆录页面
- 优化ProfileScreen个人资料页面
- 优化ResetPasswordScreen重置密码页面

app-android/app/src/main/java/com/huaga/life_echo/ui/screens/ConversationListScreen.kt

@@ -2,20 +2,38 @@ package com.huaga.life_echo.ui.screens
 
 import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.WindowInsets
 import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.statusBars
+import androidx.compose.foundation.layout.windowInsetsPadding
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.items
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
 import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
@@ -24,12 +42,14 @@ import androidx.lifecycle.viewmodel.compose.viewModel
 import com.huaga.life_echo.network.models.ConversationListItemDto
 import com.huaga.life_echo.ui.components.common.EmptyStateView
 import com.huaga.life_echo.ui.components.common.LoadingIndicator
-import com.huaga.life_echo.ui.components.conversation.ConversationListHeader
 import com.huaga.life_echo.ui.components.conversation.ConversationListItem
+import com.huaga.life_echo.ui.icons.AppIcons
+import com.huaga.life_echo.ui.theme.LightPurple
 import com.huaga.life_echo.ui.viewmodel.ConversationListViewModel
 import com.huaga.life_echo.ui.viewmodel.ViewModelFactory
 import kotlinx.coroutines.launch
 
+@OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun ConversationListScreen(
     onConversationClick: (String) -> Unit = {},
@@ -41,6 +61,10 @@ fun ConversationListScreen(
     val isLoading by viewModel.isLoading.collectAsState()
     val error by viewModel.error.collectAsState()
     
+    // 多选模式状态
+    var isSelectionMode by remember { mutableStateOf(false) }
+    var selectedIds by remember { mutableStateOf(mutableSetOf<String>()) }
+    
     // 刷新对话列表
     LaunchedEffect(Unit) {
         viewModel.refreshConversations()
@@ -63,25 +87,116 @@ fun ConversationListScreen(
         }
     }
     
-    Column(
+    // 处理长按进入多选模式
-        modifier = Modifier.fillMaxSize()
+    val handleLongClick: (String) -> Unit = { conversationId ->
-    ) {
+        if (!isSelectionMode) {
+            isSelectionMode = true
+            selectedIds.add(conversationId)
+        }
+    }
     
-        // 对话列表区域
+    // 处理选择/取消选择
+    val handleToggleSelection: (String) -> Unit = { conversationId ->
+        if (selectedIds.contains(conversationId)) {
+            selectedIds.remove(conversationId)
+            if (selectedIds.isEmpty()) {
+                isSelectionMode = false
+            }
+        } else {
+            selectedIds.add(conversationId)
+        }
+    }
+    
+    // 全选/取消全选
+    val handleSelectAll: () -> Unit = {
+        if (selectedIds.size == conversations.size) {
+            selectedIds.clear()
+            isSelectionMode = false
+        } else {
+            selectedIds = conversations.map { it.id }.toMutableSet()
+        }
+    }
+    
+    // 删除选中的对话
+    val handleDeleteSelected: () -> Unit = {
+        scope.launch {
+            selectedIds.forEach { id ->
+                viewModel.deleteConversation(id)
+            }
+            selectedIds.clear()
+            isSelectionMode = false
+        }
+    }
+    
+    Scaffold(
+        modifier = Modifier
+            .fillMaxSize()
+            .windowInsetsPadding(WindowInsets.statusBars),
+        topBar = {
+            TopAppBar(
+                title = { 
+                    Text(
+                        text = if (isSelectionMode) {
+                            "已选择 ${selectedIds.size} 项"
+                        } else {
+                            "我的对话"
+                        },
+                        fontSize = 18.sp,
+                        fontWeight = FontWeight.Bold
+                    )
+                },
+                actions = {
+                    if (isSelectionMode) {
+                        // 多选模式下的操作
+                        TextButton(onClick = handleSelectAll) {
+                            Text(
+                                text = if (selectedIds.size == conversations.size) "取消全选" else "全选",
+                                color = LightPurple
+                            )
+                        }
+                        IconButton(
+                            onClick = handleDeleteSelected,
+                            enabled = selectedIds.isNotEmpty()
+                        ) {
+                            Icon(
+                                imageVector = AppIcons.Delete,
+                                contentDescription = "删除选中",
+                                tint = if (selectedIds.isNotEmpty()) MaterialTheme.colorScheme.error else MaterialTheme.colorScheme.onSurfaceVariant
+                            )
+                        }
+                        IconButton(onClick = { 
+                            selectedIds.clear()
+                            isSelectionMode = false
+                        }) {
+                            Icon(
+                                imageVector = AppIcons.Close,
+                                contentDescription = "取消选择",
+                                tint = MaterialTheme.colorScheme.onSurfaceVariant
+                            )
+                        }
+                    } else {
+                        // 正常模式下的操作
+                        IconButton(onClick = handleCreateConversation) {
+                            Icon(
+                                imageVector = AppIcons.Add,
+                                contentDescription = "新建对话",
+                                tint = LightPurple
+                            )
+                        }
+                    }
+                },
+                colors = TopAppBarDefaults.topAppBarColors(
+                    containerColor = MaterialTheme.colorScheme.surface
+                )
+            )
+        }
+    ) { paddingValues ->
         Column(
             modifier = Modifier
                 .fillMaxSize()
+                .padding(paddingValues)
                 .background(MaterialTheme.colorScheme.background)
         ) {
-            ConversationListHeader(onCreateConversation = handleCreateConversation)
-            Text(
-                text = "我的对话",
-                modifier = Modifier.padding(16.dp, 16.dp, 16.dp, 8.dp),
-                fontSize = 16.sp,
-                fontWeight = FontWeight.Medium,
-                color = MaterialTheme.colorScheme.onSurface
-            )
-            
             when {
                 isLoading -> {
                     LoadingIndicator()
@@ -98,7 +213,7 @@ fun ConversationListScreen(
                     // 空状态 - 提示用户创建新对话
                     EmptyStateView(
                         title = "还没有对话",
-                        message = "点击上方「新建对话」按钮开始您的回忆录之旅",
+                        message = "点击右上角「+」按钮开始您的回忆录之旅",
                         modifier = Modifier.fillMaxSize()
                     )
                 }
@@ -121,11 +236,22 @@ fun ConversationListScreen(
                             )
                             ConversationListItem(
                                 conversation = dto,
-                                onClick = { onConversationClick(conversation.id) },
+                                onClick = {
+                                    if (isSelectionMode) {
+                                        handleToggleSelection(conversation.id)
+                                    } else {
+                                        onConversationClick(conversation.id)
+                                    }
+                                },
                                 onDelete = {
                                     scope.launch {
                                         viewModel.deleteConversation(conversation.id)
                                     }
+                                },
+                                isSelected = selectedIds.contains(conversation.id),
+                                isSelectionMode = isSelectionMode,
+                                onLongClick = {
+                                    handleLongClick(conversation.id)
                                 }
                             )
                         }

app-android/app/src/main/java/com/huaga/life_echo/ui/screens/LoginScreen.kt

@@ -30,7 +30,6 @@ import com.huaga.life_echo.ui.components.auth.SmsCodeInput
 @Composable
 fun LoginScreen(
     onLoginSuccess: () -> Unit,
-    onNavigateToRegister: () -> Unit,
     onNavigateToResetPassword: (() -> Unit)? = null,
     onNavigateToTerms: () -> Unit = {},
     onNavigateToPrivacy: () -> Unit = {},
@@ -45,6 +44,8 @@ fun LoginScreen(
     var password by remember { mutableStateOf("") }
     var passwordVisible by remember { mutableStateOf(false) }
     var smsCode by remember { mutableStateOf("") }
+    var nickname by remember { mutableStateOf("") }  // 首次登录时的昵称
+    var needsNickname by remember { mutableStateOf(false) }  // 是否需要输入昵称
     var agreedToTerms by remember { mutableStateOf(false) }
     var showResultDialog by remember { mutableStateOf(false) }
     
@@ -55,10 +56,15 @@ fun LoginScreen(
     val isLoggedIn by viewModel.isLoggedIn.collectAsState()
     val smsCountdown by viewModel.smsCountdown.collectAsState()
     
-    // 显示操作结果弹窗
+    // 显示操作结果弹窗，并检查是否需要输入昵称
     LaunchedEffect(operationResult) {
         operationResult?.let {
             showResultDialog = true
+            // 检查是否是首次登录需要昵称
+            if (!it.success && (it.details?.contains("首次登录") == true || 
+                               it.details?.contains("需要设置昵称") == true)) {
+                needsNickname = true
+            }
         }
     }
     
@@ -101,7 +107,7 @@ fun LoginScreen(
             
             // 标题
             Text(
-                text = "欢迎回来",
+                text = if (needsNickname) "欢迎加入" else "欢迎",
                 fontSize = 28.sp,
                 fontWeight = FontWeight.Bold,
                 color = MaterialTheme.colorScheme.onSurface
@@ -110,7 +116,13 @@ fun LoginScreen(
             Spacer(modifier = Modifier.height(8.dp))
             
             Text(
-                text = "登录您的账号以继续",
+                text = if (needsNickname) {
+                    "设置昵称完成注册"
+                } else if (!isPasswordMode) {
+                    "使用手机号验证码登录，首次登录将自动注册"
+                } else {
+                    "登录您的账号以继续"
+                },
                 fontSize = 14.sp,
                 color = MaterialTheme.colorScheme.onSurfaceVariant
             )
@@ -165,6 +177,25 @@ fun LoginScreen(
             
             Spacer(modifier = Modifier.height(16.dp))
             
+            // 如果需要输入昵称（首次登录），显示昵称输入框
+            if (needsNickname && !isPasswordMode) {
+                OutlinedTextField(
+                    value = nickname,
+                    onValueChange = { 
+                        if (it.length <= 50) {
+                            nickname = it
+                        }
+                    },
+                    label = { Text("昵称") },
+                    placeholder = { Text("请输入您的昵称（1-50个字符）") },
+                    modifier = Modifier.fillMaxWidth(),
+                    singleLine = true,
+                    shape = RoundedCornerShape(16.dp),
+                    enabled = !isLoading
+                )
+                Spacer(modifier = Modifier.height(16.dp))
+            }
+            
             // 根据登录模式显示不同的输入框
             if (isPasswordMode) {
                 // 密码输入框
@@ -256,6 +287,14 @@ fun LoginScreen(
                     modifier = Modifier.padding(bottom = 8.dp)
                 )
             }
+            if (needsNickname && nickname.isNotEmpty() && nickname.trim().isEmpty()) {
+                Text(
+                    text = "昵称不能为空",
+                    fontSize = 12.sp,
+                    color = MaterialTheme.colorScheme.error,
+                    modifier = Modifier.padding(bottom = 8.dp)
+                )
+            }
             
             Spacer(modifier = Modifier.height(24.dp))
             
@@ -332,9 +371,14 @@ fun LoginScreen(
                             viewModel.login(trimmedPhone, password, agreedToTerms)
                         }
                     } else {
-                        // 验证码登录
+                        // 验证码登录/注册
+                        val trimmedNickname = if (needsNickname) nickname.trim() else null
                         if (trimmedPhone.length == 11 && smsCode.length == 6 && agreedToTerms) {
-                            viewModel.loginWithSms(trimmedPhone, smsCode, agreedToTerms)
+                            // 如果需要昵称但未提供，不执行登录
+                            if (needsNickname && trimmedNickname.isNullOrBlank()) {
+                                return@Button
+                            }
+                            viewModel.loginWithSms(trimmedPhone, smsCode, agreedToTerms, trimmedNickname)
                         }
                     }
                 },
@@ -342,7 +386,11 @@ fun LoginScreen(
                     .fillMaxWidth()
                     .height(48.dp),
                 enabled = !isLoading && phone.trim().length == 11 && 
-                         (if (isPasswordMode) password.length >= 6 else smsCode.length == 6) &&
+                         (if (isPasswordMode) {
+                             password.length >= 6
+                         } else {
+                             smsCode.length == 6 && (!needsNickname || nickname.trim().isNotEmpty())
+                         }) &&
                          agreedToTerms,
                 colors = ButtonDefaults.buttonColors(
                     containerColor = LightPurple,
@@ -356,7 +404,7 @@ fun LoginScreen(
                     )
                 } else {
                     Text(
-                        text = "登录",
+                        text = if (needsNickname) "注册并登录" else "登录",
                         fontSize = 16.sp,
                         fontWeight = FontWeight.Bold
                     )
@@ -378,15 +426,6 @@ fun LoginScreen(
             
             Spacer(modifier = Modifier.height(8.dp))
             
-            // 注册链接
-            TextButton(onClick = onNavigateToRegister) {
-                Text(
-                    text = "还没有账号？立即注册",
-                    color = LightPurple,
-                    fontSize = 14.sp
-                )
-            }
-            
         }
         
         // 操作结果弹窗
@@ -448,11 +487,20 @@ fun LoginScreen(
                             viewModel.clearOperationResult()
                             if (operationResult?.success == true) {
                                 // 成功时延迟跳转已在LaunchedEffect中处理
+                                needsNickname = false
+                                nickname = ""
+                            } else {
+                                // 失败时，如果是需要昵称的错误，不清除needsNickname状态
+                                if (!(operationResult?.details?.contains("首次登录") == true || 
+                                     operationResult?.details?.contains("需要设置昵称") == true)) {
+                                    needsNickname = false
+                                    nickname = ""
+                                }
                             }
                         }
                     ) {
                         Text(
-                            text = if (operationResult?.success == true) "确定" else "重试",
+                            text = if (operationResult?.success == true) "确定" else if (needsNickname) "设置昵称" else "重试",
                             color = if (operationResult?.success == true) LightPurple else MaterialTheme.colorScheme.error
                         )
                     }

app-android/app/src/main/java/com/huaga/life_echo/ui/screens/MyMemoirScreen.kt

@@ -48,6 +48,7 @@ fun MyMemoirScreen(
     )
 ) {
     val chapters by viewModel.chapters.collectAsState(initial = emptyList())
+    val chapterDtosFromApi by viewModel.chapterDtos.collectAsState(initial = emptyList())
     val selectedChapter by viewModel.selectedChapter.collectAsState()
     val isLoading by viewModel.isLoading.collectAsState()
     val bookInfo by viewModel.bookInfo.collectAsState()
@@ -78,8 +79,13 @@ fun MyMemoirScreen(
         viewModel.refreshChapters()
     }
     
-    // 转换Chapter为ChapterDto用于显示
+    // 转换Chapter为ChapterDto用于显示，优先使用API返回的ChapterDto（包含images）
-    val chapterDtos = remember(chapters) {
+    val chapterDtos = remember(chapters, chapterDtosFromApi) {
+        if (chapterDtosFromApi.isNotEmpty()) {
+            // 使用API返回的ChapterDto（包含images信息）
+            chapterDtosFromApi
+        } else {
+            // 如果没有API数据，从本地Chapter创建
             chapters.map { chapter ->
                 ChapterDto(
                     id = chapter.id,
@@ -95,6 +101,7 @@ fun MyMemoirScreen(
                 )
             }
         }
+    }
     
     AnimatedContent(
         targetState = showFullTextReading,
@@ -128,7 +135,8 @@ fun MyMemoirScreen(
                                 System.currentTimeMillis()
                             }
                         } ?: System.currentTimeMillis(),
-                        quotes = emptyList()
+                        quotes = emptyList(),
+                        images = dto.images
                     )
                 },
                 onBackClick = { viewModel.toggleFullTextReading() }
@@ -249,7 +257,8 @@ fun MyMemoirScreen(
                     }
                 } else {
                     // 章节阅读视图
-                    val chapterContent = remember(selectedChapter) {
+                    val chapterContent = remember(selectedChapter, chapterDtos) {
+                        val chapterDto = chapterDtos.find { it.id == selectedChapter!!.id }
                         ChapterContentDto(
                             id = selectedChapter!!.id,
                             title = selectedChapter!!.title,
@@ -259,7 +268,8 @@ fun MyMemoirScreen(
                             category = selectedChapter!!.category,
                             pageCount = null,
                             updatedAt = selectedChapter!!.updatedAt,
-                            quotes = emptyList()
+                            quotes = emptyList(),
+                            images = chapterDto?.images ?: emptyList()
                         )
                     }
                     

app-android/app/src/main/java/com/huaga/life_echo/ui/screens/ProfileScreen.kt

@@ -150,51 +150,25 @@ fun ProfileScreen(
                 modifier = Modifier
                     .fillMaxWidth()
                     .windowInsetsPadding(WindowInsets.statusBars)
-                    .padding(top = 16.dp, bottom = 32.dp),
+                    .padding(top = 16.dp, bottom = 16.dp),
                 horizontalAlignment = Alignment.CenterHorizontally
             ) {
                 if (isLoggedIn && currentUser != null) {
-                    // 已登录：显示用户信息（暂时不显示头像）
+                    // 已登录：显示个人信息栏
-                    
+                    com.huaga.life_echo.ui.components.profile.PersonalInfoCard(
-                    Text(
+                        nickname = userProfile?.nickname ?: currentUser!!.nickname,
-                        text = userProfile?.nickname ?: currentUser!!.nickname,
+                        phone = currentUser!!.phone,
-                        fontSize = 20.sp,
-                        fontWeight = FontWeight.Bold,
-                        color = MaterialTheme.colorScheme.onSurface
-                    )
-                    
-                    Spacer(modifier = Modifier.height(8.dp))
-                    
-                    // 显示邮箱
-                    if (!currentUser!!.email.isNullOrBlank()) {
-                        Text(
-                            text = currentUser!!.email ?: "",
-                            fontSize = 14.sp,
-                            color = MaterialTheme.colorScheme.onSurfaceVariant
-                        )
-                        Spacer(modifier = Modifier.height(4.dp))
-                    }
-                    
-                    // 显示手机号
-                    Text(
-                        text = currentUser!!.phone,
-                        fontSize = 14.sp,
-                        color = MaterialTheme.colorScheme.onSurfaceVariant
-                    )
-                    
-                    Spacer(modifier = Modifier.height(8.dp))
-                    
-                    // 使用新的PlanStatusBadge组件
-                    com.huaga.life_echo.ui.components.profile.PlanStatusBadge(
                         planName = currentPlan?.displayName ?: when (currentUser!!.subscription_type) {
                             "free" -> "免费体验版"
                             "premium" -> "高级版"
                             "professional" -> "专业版"
                             else -> "免费体验版"
-                        }
+                        },
+                        onClick = {
+                            navController?.navigate(com.huaga.life_echo.navigation.Screen.PersonalInfo.route)
+                        },
+                        modifier = Modifier.padding(horizontal = 16.dp)
                     )
-                    
-                    Spacer(modifier = Modifier.height(16.dp))
                 } else {
                     // 未登录：显示登录提示
                     Box(

app-android/app/src/main/java/com/huaga/life_echo/ui/screens/ResetPasswordScreen.kt

@@ -84,12 +84,15 @@ fun ResetPasswordScreen(
         }
     }
     
-    // 监听成功消息
+    // 监听密码重置成功（只监听密码重置操作的成功，不监听发送验证码的成功）
-    LaunchedEffect(successMessage) {
+    LaunchedEffect(operationResult) {
-        successMessage?.let {
+        operationResult?.let { result ->
+            // 只有当操作成功且消息是"密码重置成功"时才显示对话框
+            if (result.success && result.message == "密码重置成功") {
                 showSuccessDialog = true
             }
         }
+    }
     
     Scaffold(
         topBar = {