feat: integrate client and server sharing workflows

web/src/features/home/ChannelList.tsx

@@ -36,7 +36,7 @@ export function ChannelList({ kind, title, onOpen }: Props) {
                     <span className={styles.enc}><Icon name="lock" size={12} /> 加密</span>
                     <span className={c.state === 'sealed' ? styles.enc : styles.raw}>{c.state === 'sealed' ? '已封存' : '草稿'}</span>
                     <span>{c.mine ? '我创建的' : '收到的'}</span>
-                    <span>{formatRemaining(c.createdAt + c.ttlSeconds * 1000)}</span>
+                    <span>{formatRemaining(c.expiresAt)}</span>
                   </>
                 ) : (
                   <>