feat(shop): 门店 logo 上传 + 侧边栏品牌替换

- shops 表新增 logo_url 字段，AutoMigrate 自动建列
- 后端新增 POST /api/v1/shop/logo 接口（管理员），图片裁剪为 256×256 JPEG 存储
- UpdateInfo 支持传入 logo_url
- 侧边栏「岩美」替换为门店真实名称 + 自定义 logo
- 无 logo 时显示店名首字文字头像（深蓝底白字）
- 设置页「酒行信息」展示 logo 预览，编辑弹窗新增「更换 Logo」上传按钮
- 修复库存导入计数逻辑：total/imported/updated/errors 四项分别统计
- 库存导入去重改为双路索引（编号 + 名称|系列|规格），避免 key 不一致误判新增
- settings 页导入结果统一显示「重复 X 条」，兼容 skipped 和 updated 两个字段

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

client/lib/screens/settings/settings_screen.dart

@@ -127,14 +127,24 @@ class _SettingsScreenState extends ConsumerState<SettingsScreen> {
                 child: Column(
                   crossAxisAlignment: CrossAxisAlignment.start,
                   children: [
-                    _ShopInfoRow(
-                        label: '门店编号',
-                        value: shop.code.isNotEmpty ? shop.code : '—'),
-                    const Divider(height: 16),
-                    _ShopInfoRow(
-                        label: '门店名称',
-                        value: shop.name.isNotEmpty ? shop.name : '—'),
-                    const Divider(height: 16),
+                    // Logo 预览行
+                    Row(
+                      children: [
+                        _ShopLogoPreview(logoUrl: shop.logoUrl, shopName: shop.name, size: 64),
+                        const SizedBox(width: 16),
+                        Column(
+                          crossAxisAlignment: CrossAxisAlignment.start,
+                          children: [
+                            Text(shop.name.isNotEmpty ? shop.name : '—',
+                                style: const TextStyle(fontSize: 16, fontWeight: FontWeight.w600)),
+                            const SizedBox(height: 4),
+                            Text(shop.code.isNotEmpty ? shop.code : '—',
+                                style: const TextStyle(fontSize: 13, color: AppTheme.textSecondary)),
+                          ],
+                        ),
+                      ],
+                    ),
+                    const Divider(height: 24),
                     _ShopInfoRow(
                         label: '门店地址',
                         value: shop.address.isNotEmpty ? shop.address : '—'),
@@ -1525,6 +1535,7 @@ class _ImportSlot {
   int total = 0;
   int imported = 0;
   int skipped = 0;
+  int updated = 0;
   // 进度
   int uploadPercent = 0;
   bool isProcessing = false;
@@ -1718,9 +1729,10 @@ class _BatchImportWidgetState extends ConsumerState<_BatchImportWidget> {
         final data = (resp.data is Map) ? resp.data as Map<String, dynamic> : <String, dynamic>{};
         if (mounted) setState(() {
           slot.success = true;
-          slot.total = (data['total'] ?? data['imported'] ?? 0) as int;
           slot.imported = (data['imported'] ?? 0) as int;
           slot.skipped = (data['skipped'] ?? 0) as int;
+          slot.updated = (data['updated'] ?? 0) as int;
+          slot.total = (data['total'] ?? slot.imported + slot.skipped + slot.updated) as int;
           slot.isProcessing = false;
         });
       } on DioException catch (e) {
@@ -2058,10 +2070,11 @@ class _BatchImportWidgetState extends ConsumerState<_BatchImportWidget> {
     Widget? statusWidget;
     if (slot.hasResult) {
       if (slot.success == true) {
+        final duplicate = slot.skipped + slot.updated;
         final parts = <String>[
           '共 ${slot.total} 条',
           '新增 ${slot.imported} 条',
-          if (slot.skipped > 0) '重复跳过 ${slot.skipped} 条',
+          if (duplicate > 0) '重复 $duplicate 条',
         ];
         statusWidget = Row(
           mainAxisSize: MainAxisSize.min,
@@ -2177,6 +2190,54 @@ class _BatchImportWidgetState extends ConsumerState<_BatchImportWidget> {
   }
 }
 
+// ── 门店 Logo 预览 ────────────────────────────────────────
+class _ShopLogoPreview extends StatelessWidget {
+  final String logoUrl;
+  final String shopName;
+  final double size;
+  const _ShopLogoPreview({required this.logoUrl, required this.shopName, this.size = 64});
+
+  @override
+  Widget build(BuildContext context) {
+    final radius = BorderRadius.circular(size * 0.19);
+    if (logoUrl.isNotEmpty) {
+      final fullUrl = logoUrl.startsWith('http') ? logoUrl : '${AppConfig.apiBaseUrl.replaceAll('/api/v1', '')}$logoUrl';
+      return ClipRRect(
+        borderRadius: radius,
+        child: Image.network(
+          fullUrl,
+          width: size,
+          height: size,
+          fit: BoxFit.cover,
+          errorBuilder: (_, __, ___) => _initial(radius),
+        ),
+      );
+    }
+    return _initial(radius);
+  }
+
+  Widget _initial(BorderRadius radius) {
+    final initial = shopName.isNotEmpty ? shopName.characters.first : '店';
+    return Container(
+      width: size,
+      height: size,
+      decoration: BoxDecoration(
+        color: const Color(0xFF0F3057),
+        borderRadius: radius,
+      ),
+      alignment: Alignment.center,
+      child: Text(
+        initial,
+        style: TextStyle(
+          color: Colors.white,
+          fontSize: size * 0.5,
+          fontWeight: FontWeight.w600,
+        ),
+      ),
+    );
+  }
+}
+
 // ── 酒行信息行 ────────────────────────────────────────────
 class _ShopInfoRow extends StatelessWidget {
   final String label;
@@ -2222,6 +2283,7 @@ class _ShopEditDialogState extends ConsumerState<_ShopEditDialog> {
   late final TextEditingController _phoneCtrl;
   late final TextEditingController _managerCtrl;
   bool _saving = false;
+  bool _uploadingLogo = false;
 
   @override
   void initState() {
@@ -2241,6 +2303,37 @@ class _ShopEditDialogState extends ConsumerState<_ShopEditDialog> {
     super.dispose();
   }
 
+  Future<void> _uploadLogo() async {
+    final result = await FilePicker.platform.pickFiles(
+      type: FileType.custom,
+      allowedExtensions: ['jpg', 'jpeg', 'png'],
+      withData: true,
+    );
+    if (result == null || result.files.isEmpty) return;
+    final file = result.files.first;
+    if (file.bytes == null) return;
+    setState(() => _uploadingLogo = true);
+    try {
+      await ref.read(shopRepositoryProvider).uploadLogo(file.bytes!, file.name);
+      ref.invalidate(shopInfoProvider);
+      if (mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(const SnackBar(
+          content: Text('Logo 已更新'),
+          backgroundColor: AppTheme.success,
+        ));
+      }
+    } catch (e) {
+      if (mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(SnackBar(
+          content: Text('上传失败：$e'),
+          backgroundColor: AppTheme.danger,
+        ));
+      }
+    } finally {
+      if (mounted) setState(() => _uploadingLogo = false);
+    }
+  }
+
   Future<void> _save() async {
     setState(() => _saving = true);
     try {
@@ -2279,6 +2372,25 @@ class _ShopEditDialogState extends ConsumerState<_ShopEditDialog> {
         child: Column(
           mainAxisSize: MainAxisSize.min,
           children: [
+            // Logo 上传行
+            Row(
+              children: [
+                _ShopLogoPreview(
+                  logoUrl: ref.watch(shopInfoProvider).valueOrNull?.logoUrl ?? widget.shop.logoUrl,
+                  shopName: _nameCtrl.text,
+                  size: 56,
+                ),
+                const SizedBox(width: 12),
+                OutlinedButton.icon(
+                  onPressed: _uploadingLogo ? null : _uploadLogo,
+                  icon: _uploadingLogo
+                      ? const SizedBox(width: 14, height: 14, child: CircularProgressIndicator(strokeWidth: 2))
+                      : const Icon(Icons.upload_outlined, size: 16),
+                  label: const Text('更换 Logo'),
+                ),
+              ],
+            ),
+            const SizedBox(height: 16),
             TextField(
               controller: _nameCtrl,
               decoration: const InputDecoration(labelText: '门店名称'),