From 672a545c3804e61b4eb47aa92f8e96b86a18a601 Mon Sep 17 00:00:00 2001
From: lxh2875931338 <lxh2875931338@outlook.com>
Date: Sat, 24 Oct 2026 21:44:14 +0800
Subject: [PATCH] =?UTF-8?q?feat(ui):=20=E6=94=B6=E8=97=8F=E9=A1=B9?=
 =?UTF-8?q?=E6=97=A0=E5=85=83=E6=95=B0=E6=8D=AE=E6=97=B6=EF=BC=8C=E5=89=AF?=
 =?UTF-8?q?=E6=A0=87=E9=A2=98=E6=98=BE=E7=A4=BA=E4=B8=8A=E7=BA=A7=E6=96=87?=
 =?UTF-8?q?=E4=BB=B6=E5=A4=B9=E5=90=8D=EF=BC=88=E5=B8=A6=E6=8B=AC=E5=8F=B7?=
 =?UTF-8?q?=EF=BC=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

之前无标签时副标题固定写"收藏"，和"歌手"语义混在一起。
现在取 path 的上一级目录（解码后）显示为 "(B-未分类)" 这种形式：
- 括号清楚表明是目录，不是艺术家
- 有标签时仍优先显示艺术家
- 目录层级不足或解码失败时回退为空（displaySubtitle 兜底"未知艺术家"）

真机验证：收藏项显示 "13楼的大笨象 - 郑融" / "(B-未分类)"。
---
 lib/pages/home_page.dart | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/lib/pages/home_page.dart b/lib/pages/home_page.dart
index 678676e..8169aac 100644
--- a/lib/pages/home_page.dart
+++ b/lib/pages/home_page.dart
@@ -35,11 +35,10 @@ class SongItem {
       : fileName.replaceAll(RegExp(r'\.[^.]*$'), '');
 
   String get displaySubtitle {
-    if (metadataState == 'success' && artist != null) {
+    if (metadataState == 'success' && artist != null && artist!.isNotEmpty) {
       return artist!;
-    } else {
-      return sourceTag;
     }
+    return sourceTag.isNotEmpty ? sourceTag : '未知艺术家';
   }
 }
 
@@ -272,12 +271,23 @@ class _HomePageState extends BaseState<HomePage> {
         displayName = rawName;
       }
 
+      // 取上级目录名，作为没有标签时的副标题（加括号区分"这是文件夹"）
+      final segments = path.split('/').where((s) => s.isNotEmpty).toList();
+      String folderName = '';
+      if (segments.length >= 2) {
+        try {
+          folderName = Uri.decodeComponent(segments[segments.length - 2]);
+        } catch (_) {
+          folderName = segments[segments.length - 2];
+        }
+      }
+
       items.add(SongItem(
         path: path,
         fileName: displayName,
         title: hasTitle ? title : null,
         artist: artist.isNotEmpty ? artist : null,
-        sourceTag: '收藏',
+        sourceTag: folderName.isNotEmpty ? '($folderName)' : '',
         metadataState: hasTitle ? 'success' : 'unknown',
       ));
     }