docs: 更新文档与 demo

- 更新 docs/ 与 app-ios/docs/
- 更新 app-ios/demo、assets/demo、app-ios 代码与计划

Co-authored-by: Cursor <cursoragent@cursor.com>

app-ios/app/(tabs)/index.tsx

@@ -16,7 +16,7 @@ export default function ChatListScreen() {
     <SafeAreaView style={styles.container} edges={['top']}>
       {/* Header */}
       <View style={styles.header}>
-        <Text style={styles.headerTitle}>往事拾遗</Text>
+        <Text style={styles.headerTitle}>岁月时书</Text>
       </View>
 
       {/* Content */}