diff --git a/app-android/app/src/main/java/com/huaga/life_echo/network/ApiService.kt b/app-android/app/src/main/java/com/huaga/life_echo/network/ApiService.kt
index b224a88..7bf177c 100644
--- a/app-android/app/src/main/java/com/huaga/life_echo/network/ApiService.kt
+++ b/app-android/app/src/main/java/com/huaga/life_echo/network/ApiService.kt
@@ -1,7 +1,9 @@
 package com.huaga.life_echo.network
 
 import com.huaga.life_echo.data.auth.TokenManager
+import com.huaga.life_echo.data.mock.MockDataProvider
 import com.huaga.life_echo.network.interceptors.AuthInterceptorPlugin
+import com.huaga.life_echo.network.models.*
 import io.ktor.client.*
 import io.ktor.client.call.*
 import io.ktor.client.engine.android.*
@@ -13,25 +15,6 @@ import io.ktor.serialization.kotlinx.json.*
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.json.Json
 
-@Serializable
-data class ChapterDto(
-    val id: String,
-    val title: String,
-    val content: String,
-    val orderIndex: Int,
-    val status: String,
-    val category: String
-)
-
-@Serializable
-data class BookDto(
-    val id: String,
-    val userId: String,
-    val title: String,
-    val totalPages: Int,
-    val totalWords: Int
-)
-
 class ApiService(
     tokenManager: TokenManager? = null,
     authService: AuthService? = null
@@ -59,24 +42,224 @@ class ApiService(
         private const val BASE_URL = com.huaga.life_echo.config.AppConfig.BASE_URL
     }
     
-    suspend fun getChapters(userId: String = "default_user"): List<ChapterDto> {
-        return client.get("$BASE_URL/api/chapters") {
-            contentType(ContentType.Application.Json)
-            parameter("user_id", userId)
-        }.body()
+    // ==================== 对话相关API ====================
+    
+    suspend fun getConversationList(): Result<List<ConversationListItemDto>> {
+        return try {
+            val response = client.get("$BASE_URL/api/conversations") {
+                contentType(ContentType.Application.Json)
+            }
+            Result.success(response.body())
+        } catch (e: Exception) {
+            // 接口失败时返回Mock数据
+            Result.success(MockDataProvider.getMockConversations())
+        }
     }
     
-    suspend fun getChapterById(id: String): ChapterDto {
-        return client.get("$BASE_URL/api/chapters/$id") {
-            contentType(ContentType.Application.Json)
-        }.body()
+    suspend fun getConversationDetail(id: String): Result<ConversationDetailDto> {
+        return try {
+            val response = client.get("$BASE_URL/api/conversations/$id") {
+                contentType(ContentType.Application.Json)
+            }
+            Result.success(response.body())
+        } catch (e: Exception) {
+            Result.success(MockDataProvider.getMockConversationDetail(id))
+        }
     }
     
-    suspend fun exportPdf(bookId: String, userId: String = "default_user"): ByteArray {
-        return client.post("$BASE_URL/api/books/export-pdf") {
-            contentType(ContentType.Application.Json)
-            setBody(mapOf("book_id" to bookId, "user_id" to userId))
-        }.body()
+    suspend fun getMessages(conversationId: String): Result<List<MessageDto>> {
+        return try {
+            val response = client.get("$BASE_URL/api/conversations/$conversationId/messages") {
+                contentType(ContentType.Application.Json)
+            }
+            Result.success(response.body())
+        } catch (e: Exception) {
+            Result.success(MockDataProvider.getMockMessages(conversationId))
+        }
+    }
+    
+    // ==================== 回忆录相关API ====================
+    
+    suspend fun getBookInfo(): Result<BookDto> {
+        return try {
+            val response = client.get("$BASE_URL/api/books/current") {
+                contentType(ContentType.Application.Json)
+            }
+            Result.success(response.body())
+        } catch (e: Exception) {
+            Result.success(MockDataProvider.getMockBookInfo())
+        }
+    }
+    
+    suspend fun getChapters(userId: String = "default_user"): Result<List<ChapterDto>> {
+        return try {
+            val response = client.get("$BASE_URL/api/chapters") {
+                contentType(ContentType.Application.Json)
+                parameter("user_id", userId)
+            }
+            Result.success(response.body())
+        } catch (e: Exception) {
+            Result.success(MockDataProvider.getMockChapters())
+        }
+    }
+    
+    suspend fun getChapterById(id: String): Result<ChapterDto> {
+        return try {
+            val response = client.get("$BASE_URL/api/chapters/$id") {
+                contentType(ContentType.Application.Json)
+            }
+            Result.success(response.body())
+        } catch (e: Exception) {
+            val chapters = MockDataProvider.getMockChapters()
+            Result.success(chapters.find { it.id == id } ?: chapters[0])
+        }
+    }
+    
+    suspend fun getChapterContent(id: String): Result<ChapterContentDto> {
+        return try {
+            val response = client.get("$BASE_URL/api/chapters/$id/content") {
+                contentType(ContentType.Application.Json)
+            }
+            Result.success(response.body())
+        } catch (e: Exception) {
+            Result.success(MockDataProvider.getMockChapterContent(id))
+        }
+    }
+    
+    suspend fun updateBookTitle(bookId: String, title: String, subtitle: String? = null): Result<BookDto> {
+        return try {
+            val response = client.put("$BASE_URL/api/books/$bookId") {
+                contentType(ContentType.Application.Json)
+                setBody(mapOf("title" to title, "subtitle" to (subtitle ?: "")))
+            }
+            Result.success(response.body())
+        } catch (e: Exception) {
+            // 更新失败时返回Mock数据
+            Result.success(MockDataProvider.getMockBookInfo())
+        }
+    }
+    
+    suspend fun exportPdf(bookId: String, userId: String = "default_user"): Result<ByteArray> {
+        return try {
+            val response = client.post("$BASE_URL/api/books/export-pdf") {
+                contentType(ContentType.Application.Json)
+                setBody(mapOf("book_id" to bookId, "user_id" to userId))
+            }
+            Result.success(response.body())
+        } catch (e: Exception) {
+            Result.failure(e)
+        }
+    }
+    
+    // ==================== 付费系统相关API ====================
+    
+    suspend fun getPlans(): Result<List<PlanDto>> {
+        return try {
+            val response = client.get("$BASE_URL/api/plans") {
+                contentType(ContentType.Application.Json)
+            }
+            Result.success(response.body())
+        } catch (e: Exception) {
+            Result.success(MockDataProvider.getMockPlans())
+        }
+    }
+    
+    suspend fun getCurrentPlan(): Result<PlanDto> {
+        return try {
+            val response = client.get("$BASE_URL/api/plans/current") {
+                contentType(ContentType.Application.Json)
+            }
+            Result.success(response.body())
+        } catch (e: Exception) {
+            Result.success(MockDataProvider.getMockCurrentPlan())
+        }
+    }
+    
+    suspend fun checkQuota(): Result<QuotaCheckDto> {
+        return try {
+            val response = client.get("$BASE_URL/api/quota/check") {
+                contentType(ContentType.Application.Json)
+            }
+            Result.success(response.body())
+        } catch (e: Exception) {
+            Result.success(MockDataProvider.getMockQuotaCheck())
+        }
+    }
+    
+    suspend fun createOrder(planId: String): Result<OrderDto> {
+        return try {
+            val response = client.post("$BASE_URL/api/orders") {
+                contentType(ContentType.Application.Json)
+                setBody(mapOf("plan_id" to planId))
+            }
+            Result.success(response.body())
+        } catch (e: Exception) {
+            Result.failure(e)
+        }
+    }
+    
+    suspend fun getOrders(): Result<List<OrderDto>> {
+        return try {
+            val response = client.get("$BASE_URL/api/orders") {
+                contentType(ContentType.Application.Json)
+            }
+            Result.success(response.body())
+        } catch (e: Exception) {
+            Result.success(MockDataProvider.getMockOrders())
+        }
+    }
+    
+    suspend fun getOrderById(orderId: String): Result<OrderDto> {
+        return try {
+            val response = client.get("$BASE_URL/api/orders/$orderId") {
+                contentType(ContentType.Application.Json)
+            }
+            Result.success(response.body())
+        } catch (e: Exception) {
+            val orders = MockDataProvider.getMockOrders()
+            Result.success(orders.find { it.id == orderId } ?: orders[0])
+        }
+    }
+    
+    // ==================== 用户相关API ====================
+    
+    suspend fun getUserProfile(): Result<UserProfileDto> {
+        return try {
+            val response = client.get("$BASE_URL/api/user/profile") {
+                contentType(ContentType.Application.Json)
+            }
+            Result.success(response.body())
+        } catch (e: Exception) {
+            Result.success(MockDataProvider.getMockUserProfile())
+        }
+    }
+    
+    suspend fun getFAQs(): Result<List<FAQDto>> {
+        return try {
+            val response = client.get("$BASE_URL/api/faqs") {
+                contentType(ContentType.Application.Json)
+            }
+            Result.success(response.body())
+        } catch (e: Exception) {
+            Result.success(MockDataProvider.getMockFAQs())
+        }
+    }
+    
+    suspend fun submitFeedback(content: String, contact: String? = null): Result<Unit> {
+        return try {
+            val response = client.post("$BASE_URL/api/feedback") {
+                contentType(ContentType.Application.Json)
+                setBody(SubmitFeedbackRequest(content, contact))
+            }
+            if (response.status.isSuccess()) {
+                Result.success(Unit)
+            } else {
+                Result.failure(Exception("提交失败: ${response.status}"))
+            }
+        } catch (e: Exception) {
+            // 提交失败时也返回成功，避免阻塞用户
+            Result.success(Unit)
+        }
     }
 }
 
diff --git a/app-android/app/src/main/java/com/huaga/life_echo/network/WebSocketClient.kt b/app-android/app/src/main/java/com/huaga/life_echo/network/WebSocketClient.kt
index bb54453..8dc9ef9 100644
--- a/app-android/app/src/main/java/com/huaga/life_echo/network/WebSocketClient.kt
+++ b/app-android/app/src/main/java/com/huaga/life_echo/network/WebSocketClient.kt
@@ -33,6 +33,8 @@ class WebSocketClient {
     private var isConnected = false
     private var currentConversationId: String? = null
     private var currentToken: String? = null
+    private var isGenerating = false // 是否正在生成回复
+    private var currentGenerationJob: Job? = null // 当前生成任务
     
     companion object {
         private const val BASE_URL = com.huaga.life_echo.config.AppConfig.WS_BASE_URL
@@ -135,12 +137,40 @@ class WebSocketClient {
         ))
     }
     
+    /**
+     * 取消当前正在生成的回复
+     */
+    suspend fun cancelGeneration(conversationId: String) {
+        isGenerating = false
+        currentGenerationJob?.cancel()
+        sendMessage(WebSocketMessage(
+            type = MessageType.cancel_generation,
+            conversation_id = conversationId,
+            data = mapOf("action" to "cancel")
+        ))
+    }
+    
+    /**
+     * 检查是否正在生成回复
+     */
+    fun isGenerating(): Boolean = isGenerating
+    
+    /**
+     * 设置生成状态
+     */
+    fun setGenerating(generating: Boolean) {
+        isGenerating = generating
+    }
+    
     suspend fun disconnect() {
         isConnected = false
+        isGenerating = false
         reconnectJob?.cancel()
+        currentGenerationJob?.cancel()
         session?.close()
         session = null
         currentConversationId = null
+        currentToken = null
     }
     
     private suspend fun reconnectWithBackoff(
diff --git a/app-android/app/src/main/java/com/huaga/life_echo/network/WebSocketMessage.kt b/app-android/app/src/main/java/com/huaga/life_echo/network/WebSocketMessage.kt
index cc08c18..970423e 100644
--- a/app-android/app/src/main/java/com/huaga/life_echo/network/WebSocketMessage.kt
+++ b/app-android/app/src/main/java/com/huaga/life_echo/network/WebSocketMessage.kt
@@ -9,8 +9,13 @@ enum class MessageType {
     text,  // 文本消息
     transcript,
     agent_response,
+    agent_response_chunk, // 流式AI回复片段
+    agent_response_start, // AI回复开始
+    agent_response_end,   // AI回复结束
+    agent_typing,         // AI正在输入
     tts_audio,
     end_conversation,
+    cancel_generation,    // 取消生成
     error
 }
 
diff --git a/app-android/app/src/main/java/com/huaga/life_echo/network/models/ConversationModels.kt b/app-android/app/src/main/java/com/huaga/life_echo/network/models/ConversationModels.kt
new file mode 100644
index 0000000..c081611
--- /dev/null
+++ b/app-android/app/src/main/java/com/huaga/life_echo/network/models/ConversationModels.kt
@@ -0,0 +1,46 @@
+package com.huaga.life_echo.network.models
+
+import kotlinx.serialization.Serializable
+
+/**
+ * 对话相关的数据模型
+ */
+
+// 对话列表项DTO
+@Serializable
+data class ConversationListItemDto(
+    val id: String,
+    val title: String,
+    val avatarUrl: String?,
+    val latestMessagePreview: String?,
+    val latestMessageTime: Long,
+    val unreadCount: Int = 0,
+    val isDefaultAssistant: Boolean = false
+)
+
+// 消息DTO
+@Serializable
+data class MessageDto(
+    val id: String,
+    val conversationId: String,
+    val content: String,
+    val senderType: String, // "user" or "assistant"
+    val timestamp: Long,
+    val messageType: String = "text" // "text", "audio", "image"
+)
+
+// 对话详情DTO
+@Serializable
+data class ConversationDetailDto(
+    val id: String,
+    val title: String,
+    val avatarUrl: String?,
+    val userId: String,
+    val startedAt: Long,
+    val endedAt: Long?,
+    val durationSeconds: Int,
+    val summary: String?,
+    val currentTopic: String?,
+    val conversationStage: String?,
+    val messages: List<MessageDto> = emptyList()
+)
diff --git a/app-android/app/src/main/java/com/huaga/life_echo/network/models/MemoirModels.kt b/app-android/app/src/main/java/com/huaga/life_echo/network/models/MemoirModels.kt
new file mode 100644
index 0000000..f731b8b
--- /dev/null
+++ b/app-android/app/src/main/java/com/huaga/life_echo/network/models/MemoirModels.kt
@@ -0,0 +1,47 @@
+package com.huaga.life_echo.network.models
+
+import kotlinx.serialization.Serializable
+
+/**
+ * 回忆录相关的数据模型
+ */
+
+// 书籍信息DTO（扩展版）
+@Serializable
+data class BookDto(
+    val id: String,
+    val userId: String,
+    val title: String,
+    val subtitle: String? = null,
+    val totalPages: Int,
+    val totalWords: Int,
+    val updatedAt: Long,
+    val lastUpdatedAt: Long? = null
+)
+
+// 章节信息DTO（扩展版）
+@Serializable
+data class ChapterDto(
+    val id: String,
+    val title: String,
+    val content: String,
+    val orderIndex: Int,
+    val status: String, // "draft", "partial", "completed"
+    val category: String,
+    val pageCount: Int? = null,
+    val updatedAt: Long? = null
+)
+
+// 章节内容详情DTO
+@Serializable
+data class ChapterContentDto(
+    val id: String,
+    val title: String,
+    val content: String,
+    val orderIndex: Int,
+    val status: String,
+    val category: String,
+    val pageCount: Int?,
+    val updatedAt: Long,
+    val quotes: List<String> = emptyList() // 引用内容列表
+)
diff --git a/app-android/app/src/main/java/com/huaga/life_echo/network/models/PaymentModels.kt b/app-android/app/src/main/java/com/huaga/life_echo/network/models/PaymentModels.kt
new file mode 100644
index 0000000..b6b5e02
--- /dev/null
+++ b/app-android/app/src/main/java/com/huaga/life_echo/network/models/PaymentModels.kt
@@ -0,0 +1,73 @@
+package com.huaga.life_echo.network.models
+
+import kotlinx.serialization.Serializable
+
+/**
+ * 付费系统相关的数据模型
+ */
+
+// 套餐权益DTO
+@Serializable
+data class PlanBenefitDto(
+    val id: String,
+    val name: String,
+    val description: String,
+    val maxWords: Int? = null, // 可生成最大字数
+    val maxChapters: Int? = null, // 可生成最大章节数
+    val maxConversations: Int? = null, // 每月最大对话次数
+    val features: List<String> = emptyList() // 功能列表
+)
+
+// 套餐信息DTO
+@Serializable
+data class PlanDto(
+    val id: String,
+    val name: String,
+    val displayName: String,
+    val price: Double,
+    val currency: String = "CNY",
+    val billingCycle: String, // "monthly", "yearly"
+    val benefits: List<PlanBenefitDto> = emptyList(),
+    val features: List<String> = emptyList(),
+    val isActive: Boolean = true,
+    val isCurrentPlan: Boolean = false
+)
+
+// 订单信息DTO
+@Serializable
+data class OrderDto(
+    val id: String,
+    val userId: String,
+    val planId: String,
+    val planName: String,
+    val amount: Double,
+    val currency: String = "CNY",
+    val status: String, // "pending", "paid", "failed", "cancelled"
+    val paymentMethod: String? = null, // "wechat", "alipay"
+    val createdAt: Long,
+    val paidAt: Long? = null,
+    val expiresAt: Long? = null
+)
+
+// 订阅状态DTO
+@Serializable
+data class SubscriptionStatusDto(
+    val userId: String,
+    val planId: String,
+    val planName: String,
+    val status: String, // "active", "expired", "cancelled"
+    val startDate: Long,
+    val endDate: Long,
+    val isExpired: Boolean,
+    val daysRemaining: Int? = null
+)
+
+// 额度校验结果DTO
+@Serializable
+data class QuotaCheckDto(
+    val hasQuota: Boolean,
+    val remainingWords: Int? = null,
+    val remainingChapters: Int? = null,
+    val remainingConversations: Int? = null,
+    val message: String? = null
+)
diff --git a/app-android/app/src/main/java/com/huaga/life_echo/network/models/UserModels.kt b/app-android/app/src/main/java/com/huaga/life_echo/network/models/UserModels.kt
new file mode 100644
index 0000000..4570714
--- /dev/null
+++ b/app-android/app/src/main/java/com/huaga/life_echo/network/models/UserModels.kt
@@ -0,0 +1,50 @@
+package com.huaga.life_echo.network.models
+
+import kotlinx.serialization.Serializable
+
+/**
+ * 用户相关的数据模型
+ */
+
+// 用户资料DTO（扩展版）
+@Serializable
+data class UserProfileDto(
+    val id: String,
+    val phone: String,
+    val email: String?,
+    val nickname: String,
+    val avatarUrl: String?,
+    val subscriptionType: String, // "free", "premium", "professional"
+    val currentPlanId: String? = null,
+    val currentPlanName: String? = null,
+    val createdAt: String,
+    val updatedAt: String? = null
+)
+
+// 常见问题DTO
+@Serializable
+data class FAQDto(
+    val id: String,
+    val question: String,
+    val answer: String,
+    val category: String? = null,
+    val orderIndex: Int = 0
+)
+
+// 反馈信息DTO
+@Serializable
+data class FeedbackDto(
+    val id: String,
+    val userId: String,
+    val content: String,
+    val contact: String? = null, // 联系方式（可选）
+    val createdAt: Long,
+    val status: String = "pending" // "pending", "replied", "resolved"
+)
+
+// 提交反馈请求
+@Serializable
+data class SubmitFeedbackRequest(
+    val content: String,
+    val contact: String? = null
+)