feat/调整tts音色，调整封面图prompt，修复对话页输入框显示逻辑，待验证封面图生成功能

app-expo/src/app/(main)/conversation/[id].tsx

@@ -15,6 +15,7 @@ import {
   Animated,
   FlatList,
   InteractionManager,
+  Keyboard,
   KeyboardAvoidingView,
   Platform,
   Pressable,
@@ -578,8 +579,20 @@ export default function ConversationScreen() {
 
   const [input, setInput] = useState('');
   const [inputMode, setInputMode] = useState<InputMode>('text');
+  const [isKeyboardVisible, setIsKeyboardVisible] = useState(false);
   const listRef = useRef<FlatList>(null);
 
+  useEffect(() => {
+    const onShow = () => setIsKeyboardVisible(true);
+    const onHide = () => setIsKeyboardVisible(false);
+    const subShow = Keyboard.addListener('keyboardDidShow', onShow);
+    const subHide = Keyboard.addListener('keyboardDidHide', onHide);
+    return () => {
+      subShow.remove();
+      subHide.remove();
+    };
+  }, []);
+
   const flattenedData = flattenMessagesForList(messages ?? []);
 
   const isRecording = recorderStatus === 'recording';
@@ -607,11 +620,12 @@ export default function ConversationScreen() {
         : t('connectionDisconnected');
 
   const keyboardOffset = Platform.OS === 'ios' ? insets.top + 56 : 0;
+  const kavEnabled = inputMode === 'text' && isKeyboardVisible;
 
   return (
     <KeyboardAvoidingView
       style={styles.container}
-      behavior="padding"
+      behavior={kavEnabled ? 'padding' : undefined}
       keyboardVerticalOffset={keyboardOffset}
     >
       <View style={styles.column}>
@@ -694,9 +708,14 @@ export default function ConversationScreen() {
             onChangeText={setInput}
             onSend={handleSend}
             inputMode={inputMode}
-            onInputModeToggle={() =>
-              setInputMode((m) => (m === 'text' ? 'voice' : 'text'))
-            }
+            onInputModeToggle={() => {
+              setInputMode((m) => {
+                if (m === 'text') {
+                  Keyboard.dismiss();
+                }
+                return m === 'text' ? 'voice' : 'text';
+              });
+            }}
             onAddPress={() => {}}
             onStartRecording={handleStartRecording}
             onStopRecording={() => void stopRecording()}

app-expo/src/app/(tabs)/memoir.tsx

@@ -1,9 +1,11 @@
+import { useFocusEffect } from '@react-navigation/native';
 import { Image } from 'expo-image';
 import { router } from 'expo-router';
-import React from 'react';
+import React, { useCallback, useState } from 'react';
 import {
   Platform,
   Pressable,
+  RefreshControl,
   ScrollView,
   View,
   useWindowDimensions,
@@ -17,7 +19,7 @@ import { Skeleton } from '@/components/ui/skeleton';
 import { Text } from '@/components/ui/text';
 import { ScreenGutter } from '@/constants/layout';
 import { useCreateConversation } from '@/features/conversation/hooks';
-import { useChapters } from '@/features/memoir/hooks';
+import { useChapters, useCheckCoverGeneration } from '@/features/memoir/hooks';
 import type { ChapterViewModel } from '@/features/memoir/types';
 
 type ChapterVariant = 'completed' | 'drafting' | 'locked-left' | 'locked-large';
@@ -393,8 +395,26 @@ function EmptyState({
 
 export default function MemoirScreen() {
   const { t } = useTranslation('memoir');
-  const { viewModels: chapters, isLoading } = useChapters();
+  const { viewModels: chapters, isLoading, refetch } = useChapters();
   const createConversation = useCreateConversation();
+  const checkCover = useCheckCoverGeneration();
+  const [refreshing, setRefreshing] = useState(false);
+
+  useFocusEffect(
+    useCallback(() => {
+      checkCover.mutate(undefined);
+    }, [checkCover.mutate]),
+  );
+
+  const handleRefresh = useCallback(async () => {
+    setRefreshing(true);
+    try {
+      await checkCover.mutateAsync(undefined);
+      await refetch();
+    } finally {
+      setRefreshing(false);
+    }
+  }, [checkCover.mutateAsync, refetch]);
 
   const handleStartChapter = () => {
     createConversation.mutate(undefined, {
@@ -414,6 +434,9 @@ export default function MemoirScreen() {
         <ScrollView
           contentInsetAdjustmentBehavior="automatic"
           className="flex-1"
+          refreshControl={
+            <RefreshControl refreshing={refreshing} onRefresh={handleRefresh} />
+          }
           contentContainerStyle={{
             paddingHorizontal: ScreenGutter,
             paddingTop: 24,

app-expo/src/features/memoir/api.ts

@@ -48,6 +48,12 @@ export const memoirApi = {
     );
   },
 
+  checkCoverGeneration() {
+    return api.post<{ triggered: string[] }>(
+      '/api/chapters/check-cover-generation',
+    );
+  },
+
   regenerateChapter(chapterId: string) {
     return api.post<{ status: string; message: string }>(
       `/api/chapters/${chapterId}/regenerate`,

app-expo/src/features/memoir/hooks.ts

@@ -69,6 +69,19 @@ export function useDeleteChapter() {
   });
 }
 
+export function useCheckCoverGeneration() {
+  const queryClient = useQueryClient();
+
+  return useMutation({
+    mutationFn: () => memoirApi.checkCoverGeneration(),
+    onSuccess: (data) => {
+      if (data.triggered.length > 0) {
+        queryClient.invalidateQueries({ queryKey: memoirKeys.chapters() });
+      }
+    },
+  });
+}
+
 // ─── Memoir state ───
 
 export function useMemoirState() {