feat(api+app): 对话阶段化、回忆录流水线与客户端会话体验

- DB: segments 用户输入文本（Alembic 0002） - Chat: 阶段检测/阶段提示/回复限制，编排与访谈/画像 prompts 调整 - Memoir: 忠实度检查 agent，叙事与分类等链路更新 - Core: agent 日志、Alembic 启动、LangChain/日志/配置等 - Story: time_hints；Memory 检索与相关测试 - Expo: 助手头像、会话页与消息拆分、实时会话与文案/i18n - Docs/scripts/tests: 迁移脚本、LLM JSON/记忆检索文档、新增单测
2026-03-26 12:13:36 +08:00
parent 49b089354c
commit a3f61fcc0f
94 changed files with 3332 additions and 672 deletions
--- a/app-expo/src/app/(main)/conversation/[id].tsx
+++ b/app-expo/src/app/(main)/conversation/[id].tsx
@@ -29,6 +29,10 @@ import { Text } from '@/components/ui/text';
 import { ScreenHeader } from '@/components/screen-header';
 import { useThemeColors } from '@/hooks/use-theme-colors';
 import { useMessages, useRealtimeSession } from '@/features/conversation/hooks';
+import {
+  splitMessageParts,
+  splitStreamingSegments,
+} from '@/features/conversation/message-split';
 import type { MessageItem } from '@/features/conversation/types';
 import { isVoiceMessage } from '@/features/conversation/types';
 import { usePlayer } from '@/features/voice/hooks/use-player';
@@ -50,28 +54,18 @@ const CHAT_COLORS = {
  errorRed: '#ba1a1a',
 };

-/** 后端用 [SPLIT] 分隔多条消息，需按块渲染为多个气泡 */
-const SPLIT_DELIMITER = '[SPLIT]';
-
 /** 聊天输入框：单行内容高度与最多约 4 行（与 lineHeight 对齐） */
 const CHAT_INPUT_LINE_H = 22;
 const CHAT_INPUT_MAX_H = CHAT_INPUT_LINE_H * 4;

-function splitContent(content: string): string[] {
-  return content
-    .split(SPLIT_DELIMITER)
-    .map((s) => s.trim())
-    .filter((s) => s.length > 0);
-}
-
-const AGENT_AVATAR =
-  'https://lh3.googleusercontent.com/aida-public/AB6AXuC2cLdqTitOjFBnGTNsoJGh45K9zvV89vxB0EEHh0DT-YlbiOVyTuSmni5SO2eDOMC1HrW8cuhj29_KJJJFMV8aEPLHCwQgGA006Q9EfoDtEHP4GnzB4SEnT8bjCk6lQwjgh2Qp5dvq8oQTU5aQnKXtqOTAIIw1I3GWYlKimGa7Zqw4lnax84XRRGeYp6wj_1B9WsXuDvY7mNHIN7y_Tw0-TbRK1MGMHgd_nMNEqoqUCX6VAaDF2BjLB7BQnzIql8_8mw0TPaw1R3wO';
+/** 与 archive/app-ios-react-app 中 `app-android/.../drawable/avatar_assistant.png` 同源（岁月知己） */
+const AGENT_AVATAR = require('@/assets/images/avatar-assistant.png');
 const USER_AVATAR =
  'https://lh3.googleusercontent.com/aida-public/AB6AXuAMCjDBVhsUUXRAz9AGYejbTGoEYhzyiggYt_QIFqHCc3odRcBPNRhsE2Klg7gOeOV9V_qOy5qPqjU0GmpfgjGAWKGXZCizwRVz96N0n1IFMx4JH7QwV81zQsaVvCdJct_uABUBEawhncvQcbl0jUt_EUlNgzB-gIgUS_oLlT1TtRb8S5s7sAqwLRdGBa61yxL1X1iSWSFIn5N-WPIDs_vpCgS47q9SQjkT1q7VKvPzHzTiGF1bwVvjB7Bl2JgtaIUj6rkwlLbPG6xb';

 type InputMode = 'text' | 'voice';

-/** 展平消息列表：assistant 消息按 [SPLIT] 拆成多条，每条一个 listKey */
+/** 展平消息列表：assistant 消息按 [SPLIT] 边界拆成多条，每条一个 listKey */
 function flattenMessagesForList(
  messages: MessageItem[],
 ): (MessageItem & { listKey: string })[] {
@@ -80,7 +74,10 @@ function flattenMessagesForList(
    if (msg.senderType === 'user') {
      result.push({ ...msg, listKey: msg.id });
    } else {
-      const parts = splitContent(msg.content);
+      const parts = splitMessageParts(msg.content);
+      if (parts.length === 0) {
+        continue;
+      }
      if (parts.length > 1) {
        parts.forEach((part, i) => {
          result.push({
@@ -126,20 +123,14 @@ function MessageBubble({
        ]}
      >
        <Image
-          source={{ uri: isUser ? USER_AVATAR : AGENT_AVATAR }}
+          source={isUser ? { uri: USER_AVATAR } : AGENT_AVATAR}
          style={styles.avatarImage}
+          contentFit="cover"
+          cachePolicy="memory-disk"
          alt={isUser ? meLabel : agentName}
        />
      </View>
      <View style={[styles.bubbleColumn, isUser && styles.bubbleColumnEnd]}>
-        <Text
-          style={[
-            styles.nickname,
-            isUser ? styles.nicknameUser : styles.nicknameAgent,
-          ]}
-        >
-          {isUser ? meLabel : agentName}
-        </Text>
        {isVoice ? (
          <View
            style={[
@@ -198,10 +189,13 @@ function StreamingBubbles({
  isComplete: boolean;
  agentName: string;
 }) {
-  const parts = splitContent(streamingText);
-  const completedParts = parts.length > 1 ? parts.slice(0, -1) : [];
+  const segments = splitStreamingSegments(streamingText);
+  const completedParts =
+    segments.length > 1
+      ? segments.slice(0, -1).filter((s) => s.length > 0)
+      : [];
  const streamingPart =
-    parts.length > 1 ? parts[parts.length - 1]! : (parts[0] ?? streamingText);
+    segments.length > 0 ? segments[segments.length - 1]! : streamingText;

  return (
    <View>
@@ -212,15 +206,14 @@ function StreamingBubbles({
        >
          <View style={[styles.avatarWrapper, styles.avatarWrapperAgent]}>
            <Image
-              source={{ uri: AGENT_AVATAR }}
+              source={AGENT_AVATAR}
              style={styles.avatarImage}
+              contentFit="cover"
+              cachePolicy="memory-disk"
              alt={agentName}
            />
          </View>
          <View style={[styles.bubbleColumn]}>
-            <Text style={[styles.nickname, styles.nicknameAgent]}>
-              {agentName}
-            </Text>
            <View style={[styles.bubble, styles.bubbleAgent]}>
              <Text
                selectable
@@ -235,15 +228,14 @@ function StreamingBubbles({
      <View style={[styles.messageRow, styles.streamingRow]}>
        <View style={[styles.avatarWrapper, styles.avatarWrapperAgent]}>
          <Image
-            source={{ uri: AGENT_AVATAR }}
+            source={AGENT_AVATAR}
            style={styles.avatarImage}
+            contentFit="cover"
+            cachePolicy="memory-disk"
            alt={agentName}
          />
        </View>
        <View style={[styles.bubbleColumn]}>
-          <Text style={[styles.nickname, styles.nicknameAgent]}>
-            {agentName}
-          </Text>
          <View style={[styles.bubble, styles.bubbleAgent]}>
            <Text
              selectable
@@ -294,6 +286,7 @@ function VoiceMessageBubble({
        onPress={handlePlayPause}
        style={({ pressed }) => [
          styles.voicePlayButton,
+          isUser ? styles.voicePlayButtonUser : styles.voicePlayButtonAgent,
          pressed && { opacity: 0.7 },
        ]}
        disabled={!audioUri}
@@ -303,7 +296,7 @@ function VoiceMessageBubble({
        <Icon
          as={isPlaying ? Pause : Play}
          size={24}
-          color={isUser ? CHAT_COLORS.onSurface : CHAT_COLORS.onPrimary}
+          color={isUser ? CHAT_COLORS.onPrimary : CHAT_COLORS.primary}
        />
      </Pressable>
      <Text
@@ -679,6 +672,21 @@ export default function ConversationScreen() {
  const listRef = useRef<FlatList>(null);
  /** 底部输入区（含连接提示 + 输入条）高度，用于多行输入增高时把列表滚到底，避免挡住最新消息 */
  const composerBlockHeightRef = useRef<number | null>(null);
+  /** 连接中（connecting）时点发送：排队，连上后自动发出 */
+  const pendingTextSendRef = useRef<string | null>(null);
+  const connectingSendTimeoutRef = useRef<ReturnType<typeof setTimeout> | null>(
+    null,
+  );
+
+  const CONNECTING_SEND_TIMEOUT_MS = 15_000;
+  const PENDING_SEND_FLUSH_MS = 50;
+
+  const clearConnectingSendTimeout = useCallback(() => {
+    if (connectingSendTimeoutRef.current) {
+      clearTimeout(connectingSendTimeoutRef.current);
+      connectingSendTimeoutRef.current = null;
+    }
+  }, []);

  const flattenedData = flattenMessagesForList(messages ?? []);

@@ -741,16 +749,60 @@ export default function ConversationScreen() {
    [scrollListToEndAfterComposerLayout],
  );

+  useEffect(() => {
+    return () => {
+      clearConnectingSendTimeout();
+    };
+  }, [clearConnectingSendTimeout]);
+
+  useEffect(() => {
+    pendingTextSendRef.current = null;
+    clearConnectingSendTimeout();
+  }, [id, clearConnectingSendTimeout]);
+
+  /** 连接中排队：一旦变为 connected，短延迟后发送，给 WebSocket onopen 一点时间 */
+  useEffect(() => {
+    if (connectionState !== 'connected') return;
+    const text = pendingTextSendRef.current;
+    if (!text) return;
+    const t = setTimeout(() => {
+      if (pendingTextSendRef.current !== text) return;
+      pendingTextSendRef.current = null;
+      clearConnectingSendTimeout();
+      sendText(text);
+    }, PENDING_SEND_FLUSH_MS);
+    return () => clearTimeout(t);
+  }, [connectionState, sendText, clearConnectingSendTimeout]);
+
+  /** 排队期间若变为断开，把内容退回输入框，并取消连接等待超时 */
+  useEffect(() => {
+    if (connectionState !== 'disconnected') return;
+    clearConnectingSendTimeout();
+    const text = pendingTextSendRef.current;
+    if (!text) return;
+    pendingTextSendRef.current = null;
+    setInput(text);
+  }, [connectionState, clearConnectingSendTimeout]);
+
  const handleSend = () => {
    const text = input.trim();
    if (!text) return;
-    if (connectionState !== 'connected') {
-      Alert.alert(
-        t('chatUnavailableTitle'),
-        connectionState === 'connecting'
-          ? t('chatUnavailableConnecting')
-          : t('chatUnavailableDisconnected'),
-      );
+    if (connectionState === 'disconnected') {
+      Alert.alert(t('chatUnavailableTitle'), t('chatUnavailableDisconnected'));
+      return;
+    }
+    if (connectionState === 'connecting') {
+      pendingTextSendRef.current = text;
+      setInput('');
+      setInputResetKey((k) => k + 1);
+      clearConnectingSendTimeout();
+      connectingSendTimeoutRef.current = setTimeout(() => {
+        connectingSendTimeoutRef.current = null;
+        if (pendingTextSendRef.current !== text) return;
+        pendingTextSendRef.current = null;
+        setInput(text);
+        Alert.alert(t('chatUnavailableTitle'), t('chatQueueSendTimeout'));
+      }, CONNECTING_SEND_TIMEOUT_MS);
      return;
    }
    sendText(text);
@@ -758,6 +810,9 @@ export default function ConversationScreen() {
    setInputResetKey((k) => k + 1);
  };

+  /** 仅完全断开时禁用发送/语音；连接中可点发送（排队） */
+  const composerDisabled = connectionState === 'disconnected';
+
  const connectionLabel =
    connectionState === 'connected'
      ? t('connectionConnected')
@@ -890,7 +945,7 @@ export default function ConversationScreen() {
          tapToStartLabel={t('tapToStartRecording')}
          tapToEndLabel={t('tapToEndRecording')}
          cancelRecordingLabel={t('cancelRecording')}
-          disabled={connectionState !== 'connected'}
+          disabled={composerDisabled}
          onInputDisplayHeightChange={scrollListToEndAfterComposerLayout}
        />
      </View>
@@ -974,21 +1029,24 @@ const styles = StyleSheet.create({
  avatarWrapper: {
    width: 40,
    height: 40,
+    borderRadius: 20,
    flexShrink: 0,
-    borderWidth: 2,
+    borderWidth: 1,
    overflow: 'hidden',
  },
  avatarWrapperAgent: {
    backgroundColor: CHAT_COLORS.secondaryContainer,
-    borderColor: CHAT_COLORS.primary,
+    borderColor: 'rgba(129, 119, 166, 0.35)',
  },
  avatarWrapperUser: {
    backgroundColor: CHAT_COLORS.primaryFixed,
-    borderColor: CHAT_COLORS.onSurfaceVariant,
+    borderColor: 'rgba(141, 140, 144, 0.35)',
  },
+  /** 远程图在 Android 上若用 100% 尺寸可能解析为 0×0，需写死数值（见 Expo 文档） */
  avatarImage: {
-    width: '100%',
-    height: '100%',
+    width: 40,
+    height: 40,
+    borderRadius: 20,
  },
  bubbleColumn: {
    maxWidth: '80%',
@@ -998,44 +1056,45 @@ const styles = StyleSheet.create({
    alignItems: 'flex-end',
    alignSelf: 'flex-end',
  },
-  nickname: {
-    fontSize: 16,
-    fontWeight: '700',
-    marginBottom: 2,
-  },
-  nicknameAgent: {
-    color: CHAT_COLORS.primary,
-  },
-  nicknameUser: {
-    color: CHAT_COLORS.onSurfaceVariant,
-  },
+  /** 微信式：左白右主题色，靠头像一侧圆角略小；轻阴影替代像素风描边 */
  bubble: {
-    padding: 12,
-    borderWidth: 2,
-    shadowOffset: { width: 4, height: 4 },
-    shadowOpacity: 1,
-    shadowRadius: 0,
+    paddingHorizontal: 14,
+    paddingVertical: 10,
+    maxWidth: '100%',
+    borderWidth: 0,
+    shadowColor: '#000',
+    shadowOffset: { width: 0, height: 1 },
+    shadowOpacity: 0.06,
+    shadowRadius: 4,
+    elevation: 1,
  },
  bubbleAgent: {
-    backgroundColor: CHAT_COLORS.primary,
-    borderColor: CHAT_COLORS.primaryBorder,
-    shadowColor: CHAT_COLORS.primaryBorder,
+    backgroundColor: '#ffffff',
+    borderTopLeftRadius: 12,
+    borderTopRightRadius: 12,
+    borderBottomRightRadius: 12,
+    borderBottomLeftRadius: 4,
  },
  bubbleUser: {
-    backgroundColor: '#ffffff',
-    borderColor: CHAT_COLORS.onSurfaceVariant,
-    shadowColor: CHAT_COLORS.outline,
+    backgroundColor: CHAT_COLORS.primary,
+    borderTopLeftRadius: 12,
+    borderTopRightRadius: 12,
+    borderBottomLeftRadius: 12,
+    borderBottomRightRadius: 4,
+    shadowColor: CHAT_COLORS.primaryBorder,
+    shadowOpacity: 0.12,
+    elevation: 2,
  },
  bubbleText: {
-    fontSize: 22,
-    lineHeight: 34,
+    fontSize: 17,
+    lineHeight: 24,
    fontWeight: '400',
  },
  bubbleTextAgent: {
-    color: CHAT_COLORS.onPrimary,
+    color: CHAT_COLORS.onSurface,
  },
  bubbleTextUser: {
-    color: CHAT_COLORS.onSurface,
+    color: CHAT_COLORS.onPrimary,
  },
  voiceMessageBubble: {
    flexDirection: 'row',
@@ -1051,17 +1110,22 @@ const styles = StyleSheet.create({
    borderRadius: 22,
    justifyContent: 'center',
    alignItems: 'center',
-    backgroundColor: 'rgba(255,255,255,0.2)',
+  },
+  voicePlayButtonUser: {
+    backgroundColor: 'rgba(255, 255, 255, 0.22)',
+  },
+  voicePlayButtonAgent: {
+    backgroundColor: 'rgba(129, 119, 166, 0.12)',
  },
  voiceDurationText: {
    fontSize: 18,
    fontWeight: '500',
  },
  voiceDurationTextUser: {
-    color: CHAT_COLORS.onSurface,
+    color: CHAT_COLORS.onPrimary,
  },
  voiceDurationTextAgent: {
-    color: CHAT_COLORS.onPrimary,
+    color: CHAT_COLORS.onSurface,
  },
  inputBarWrapper: {
    backgroundColor: CHAT_COLORS.surface,
--- a/app-expo/src/app/(tabs)/index.tsx
+++ b/app-expo/src/app/(tabs)/index.tsx
@@ -1,3 +1,4 @@
+import { Image } from 'expo-image';
 import { router } from 'expo-router';
 import React from 'react';
 import { Alert, Pressable, ScrollView, View } from 'react-native';
@@ -19,6 +20,10 @@ import {
 } from '@/features/conversation/hooks';
 import type { ConversationListItem } from '@/features/conversation/types';

+/** 与聊天页一致：archive Android `avatar_assistant` */
+const DEFAULT_ASSISTANT_AVATAR = require('@/assets/images/avatar-assistant.png');
+const LIST_AVATAR_SIZE = 56;
+
 function formatRelativeConversationListTime(
  timestamp: number,
  t: TFunction<'conversation'>,
@@ -83,21 +88,50 @@ function ConversationCard({
    typography.lineHeightTight,
    typography.titleLarge + 4,
  );
-  const avatarBg = item.isDefaultAssistant ? 'bg-primary' : 'bg-secondary';
-  const avatarIconClass = item.isDefaultAssistant
-    ? 'text-primary-foreground'
-    : 'text-secondary-foreground';
+  const renderAvatar = () => {
+    if (item.isDefaultAssistant) {
+      return (
+        <View className="h-14 w-14 shrink-0 overflow-hidden rounded-lg">
+          <Image
+            source={DEFAULT_ASSISTANT_AVATAR}
+            style={{
+              width: LIST_AVATAR_SIZE,
+              height: LIST_AVATAR_SIZE,
+            }}
+            contentFit="cover"
+            cachePolicy="memory-disk"
+          />
+        </View>
+      );
+    }
+    if (item.avatarUrl) {
+      return (
+        <View className="h-14 w-14 shrink-0 overflow-hidden rounded-lg bg-secondary">
+          <Image
+            source={{ uri: item.avatarUrl }}
+            style={{
+              width: LIST_AVATAR_SIZE,
+              height: LIST_AVATAR_SIZE,
+            }}
+            contentFit="cover"
+            cachePolicy="memory-disk"
+          />
+        </View>
+      );
+    }
+    return (
+      <View className="h-14 w-14 shrink-0 items-center justify-center overflow-hidden rounded-lg bg-secondary">
+        <Icon as={User} className="text-secondary-foreground" size={28} />
+      </View>
+    );
+  };

  return (
    <Pressable
      className="flex-row items-start gap-6 rounded-xl border border-border bg-card p-6 active:bg-muted"
      onPress={onPress}
    >
-      <View
-        className={`h-14 w-14 shrink-0 items-center justify-center overflow-hidden rounded-lg ${avatarBg}`}
-      >
-        <Icon as={User} className={avatarIconClass} size={28} />
-      </View>
+      {renderAvatar()}
      <View className="min-w-0 flex-1 gap-2">
        <View className="flex-row items-start justify-between gap-2">
          <Text
--- a/app-expo/src/features/conversation/message-split.ts
+++ b/app-expo/src/features/conversation/message-split.ts
@@ -0,0 +1,31 @@
+/**
+ * 与后端 / LLM 约定：多条助手消息用 [SPLIT] 分隔（大小写不敏感）。
+ * 分隔符为边界，不包含在气泡正文中。
+ */
+
+export const MESSAGE_SPLIT_REGEX = /\[SPLIT\]/i;
+
+/** 历史/已落库消息：拆成非空片段，各渲染为一个气泡 */
+export function splitMessageParts(content: string): string[] {
+  return content
+    .split(MESSAGE_SPLIT_REGEX)
+    .map((s) => s.trim())
+    .filter((s) => s.length > 0);
+}
+
+/**
+ * 流式输出：保留空尾段，使「第一条已结束 + 分隔符已出现、第二条尚未有字」时
+ * 仍能拆成两段（上一段完成气泡 + 下一段空流式气泡）。
+ */
+export function splitStreamingSegments(content: string): string[] {
+  return content.split(MESSAGE_SPLIT_REGEX).map((s) => s.trim());
+}
+
+/** 会话列表预览：取最后一条子消息的前若干字 */
+export function lastSegmentPreview(content: string, maxLen: number): string {
+  const parts = splitMessageParts(content);
+  if (parts.length === 0) {
+    return '';
+  }
+  return parts[parts.length - 1]!.slice(0, maxLen);
+}
--- a/app-expo/src/features/conversation/realtime-session.ts
+++ b/app-expo/src/features/conversation/realtime-session.ts
@@ -8,6 +8,7 @@ import {
 import type { WsConnectionState, WsEvent } from '@/core/ws/types';

 import { handleWsEvent } from './event-handlers';
+import { lastSegmentPreview } from './message-split';
 import { conversationKeys } from './query-keys';
 import type { ConversationListItem, MessageItem } from './types';

@@ -196,7 +197,7 @@ export class RealtimeSession {
          item.id === this.conversationId
            ? {
                ...item,
-                latestMessagePreview: fullText.slice(0, 50),
+                latestMessagePreview: lastSegmentPreview(fullText, 50),
                latestMessageTime: Date.now(),
              }
            : item,
--- a/app-expo/src/i18n/generated/resources.ts
+++ b/app-expo/src/i18n/generated/resources.ts
@@ -65,6 +65,7 @@ interface Resources {
    agentName: 'Life Echo';
    cancel: 'Cancel';
    cancelRecording: 'Cancel recording';
+    chatQueueSendTimeout: 'Connection timed out. Check your network and try again.';
    chatTitle: 'Conversation';
    chatUnavailableConnecting: 'Reconnecting now. You can keep typing and send once the connection is back.';
    chatUnavailableDisconnected: 'Connection lost. You can keep typing and send after reconnecting.';
@@ -77,7 +78,7 @@ interface Resources {
    createError: 'Unable to create conversation. Please check your network and try again.';
    delete: 'Delete';
    deleteConversation: 'Delete Conversation';
-    emptyGreetingSubtitle: 'Chat with Echo and record your stories.';
+    emptyGreetingSubtitle: 'Chat with your companion and record your stories.';
    greetingTitle: 'Say Hello';
    inputPlaceholder: 'Type a message...';
    inputPlaceholderVoice: 'Type here or hold the mic to speak...';
@@ -85,7 +86,7 @@ interface Resources {
    recentChats: 'Recent Chats';
    recordingPermissionDenied: 'Microphone permission is required to record';
    send: 'Send';
-    startNewSubtitle: 'Capture a new memory or share your thoughts with Echo.';
+    startNewSubtitle: 'Capture a new memory or share your thoughts with your companion.';
    switchToText: 'Switch to text input';
    switchToVoice: 'Switch to voice input';
    tapToEndRecording: 'Tap to end';
@@ -130,7 +131,7 @@ interface Resources {
      typography: 'Typography';
    };
    continueWriting: 'Continue Writing';
-    emptySubtitle: 'Chat with Echo to record your stories';
+    emptySubtitle: 'Chat with your companion to record your stories';
    emptyTitle: 'No memoir yet';
    frameworkChapters: {
      chapter1: 'Childhood and upbringing';
--- a/app-expo/src/i18n/locales/en/conversation.json
+++ b/app-expo/src/i18n/locales/en/conversation.json
@@ -4,6 +4,7 @@
  "chatUnavailableTitle": "Chat unavailable",
  "chatUnavailableConnecting": "Reconnecting now. You can keep typing and send once the connection is back.",
  "chatUnavailableDisconnected": "Connection lost. You can keep typing and send after reconnecting.",
+  "chatQueueSendTimeout": "Connection timed out. Check your network and try again.",
  "confirm": "OK",
  "cancel": "Cancel",
  "delete": "Delete",
@@ -15,7 +16,7 @@
  "connectionConnected": "Connected",
  "connectionConnecting": "Connecting...",
  "connectionDisconnected": "Disconnected",
-  "emptyGreetingSubtitle": "Chat with Echo and record your stories.",
+  "emptyGreetingSubtitle": "Chat with your companion and record your stories.",
  "greetingTitle": "Say Hello",
  "inputPlaceholder": "Type a message...",
  "inputPlaceholderVoice": "Type here or hold the mic to speak...",
@@ -23,7 +24,7 @@
  "recentChats": "Recent Chats",
  "recordingPermissionDenied": "Microphone permission is required to record",
  "send": "Send",
-  "startNewSubtitle": "Capture a new memory or share your thoughts with Echo.",
+  "startNewSubtitle": "Capture a new memory or share your thoughts with your companion.",
  "switchToText": "Switch to text input",
  "switchToVoice": "Switch to voice input",
  "tapToEndRecording": "Tap to end",
--- a/app-expo/src/i18n/locales/en/memoir.json
+++ b/app-expo/src/i18n/locales/en/memoir.json
@@ -34,7 +34,7 @@
    "typography": "Typography"
  },
  "continueWriting": "Continue Writing",
-  "emptySubtitle": "Chat with Echo to record your stories",
+  "emptySubtitle": "Chat with your companion to record your stories",
  "emptyTitle": "No memoir yet",
  "pageTitle": "Memoir",
  "readMemory": "Read Memory",
--- a/app-expo/src/i18n/locales/zh/conversation.json
+++ b/app-expo/src/i18n/locales/zh/conversation.json
@@ -4,6 +4,7 @@
  "chatUnavailableTitle": "聊天暂不可用",
  "chatUnavailableConnecting": "正在重新连接。你仍可继续输入，恢复后再发送。",
  "chatUnavailableDisconnected": "当前连接已断开。你仍可先输入，连接恢复后再发送。",
+  "chatQueueSendTimeout": "连接等待超时，请检查网络后重试。",
  "confirm": "知道了",
  "cancel": "取消",
  "delete": "删除",
@@ -15,7 +16,7 @@
  "connectionConnected": "已连接",
  "connectionConnecting": "连接中...",
  "connectionDisconnected": "未连接",
-  "emptyGreetingSubtitle": "和 Echo 聊聊，记录你的故事。",
+  "emptyGreetingSubtitle": "和岁月知己聊聊，记录你的故事。",
  "greetingTitle": "打个招呼",
  "inputPlaceholder": "输入消息...",
  "inputPlaceholderVoice": "点击这里输入，或者按住左边说话...",
@@ -23,7 +24,7 @@
  "recentChats": "最近对话",
  "recordingPermissionDenied": "需要麦克风权限才能录音",
  "send": "发送",
-  "startNewSubtitle": "记录新回忆，或与 Echo 分享你的想法。",
+  "startNewSubtitle": "记录新回忆，或与岁月知己分享你的想法。",
  "switchToText": "切换到文字输入",
  "switchToVoice": "切换到语音输入",
  "tapToEndRecording": "点击结束",
--- a/app-expo/src/i18n/locales/zh/memoir.json
+++ b/app-expo/src/i18n/locales/zh/memoir.json
@@ -34,7 +34,7 @@
    "typography": "字体"
  },
  "continueWriting": "继续写作",
-  "emptySubtitle": "与 Echo 聊天，记录你的故事",
+  "emptySubtitle": "与岁月知己聊天，记录你的故事",
  "emptyTitle": "还没有回忆录",
  "pageTitle": "回忆录",
  "readMemory": "阅读回忆",