fix：app检测更新补充逻辑

lib/features/settings/presentation/update_dialog.dart

@@ -0,0 +1,125 @@
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:shadcn_ui/shadcn_ui.dart';
+
+import '../../../common/theme/spacing.dart';
+import '../application/update_progress.dart';
+import '../application/update_service.dart';
+import '../data/update_api_client.dart';
+
+class UpdateDialog extends ConsumerStatefulWidget {
+  const UpdateDialog({super.key, required this.upgrade, required this.source});
+
+  final UpgradeInfo upgrade;
+  final UpgradeCheckSource source;
+
+  @override
+  ConsumerState<UpdateDialog> createState() => _UpdateDialogState();
+}
+
+class _UpdateDialogState extends ConsumerState<UpdateDialog> {
+  bool _clickReported = false;
+
+  @override
+  Widget build(BuildContext context) {
+    ensureUpdateProgressListener(context);
+    final colorScheme = ShadTheme.of(context).colorScheme;
+    final progress = ref.watch(updateProgressProvider);
+    final forced = widget.upgrade.force == 1;
+    final canStart = progress == null || progress <= 0 || progress == 1;
+    final version = widget.upgrade.latestVersion.trim().isEmpty
+        ? widget.upgrade.versionCode
+        : widget.upgrade.latestVersion;
+
+    return PopScope(
+      canPop: !forced,
+      child: SafeArea(
+        top: false,
+        child: Padding(
+          padding: const EdgeInsets.fromLTRB(22, 28, 22, 20),
+          child: Column(
+            mainAxisSize: MainAxisSize.min,
+            crossAxisAlignment: CrossAxisAlignment.stretch,
+            children: [
+              Text(
+                '发现新版本 V$version',
+                textAlign: TextAlign.center,
+                style: TextStyle(
+                  color: colorScheme.foreground,
+                  fontSize: 18,
+                  fontWeight: FontWeight.w600,
+                ),
+              ),
+              if (widget.upgrade.message.trim().isNotEmpty) ...[
+                const SizedBox(height: 12),
+                Text(
+                  widget.upgrade.message,
+                  style: TextStyle(
+                    color: colorScheme.mutedForeground,
+                    fontSize: 14,
+                    height: 1.6,
+                  ),
+                ),
+              ],
+              const SizedBox(height: Spacing.sectionGap),
+              if (canStart)
+                FilledButton(
+                  onPressed: () => _startUpdate(progress),
+                  child: Text(progress == 1 ? '安装此版本' : '升级此版本'),
+                )
+              else
+                LinearProgressIndicator(
+                  value: progress.clamp(0, 1),
+                  color: colorScheme.primary,
+                  backgroundColor: colorScheme.muted,
+                ),
+              if (!forced && !canStart) ...[
+                const SizedBox(height: 10),
+                TextButton(
+                  onPressed: () => Navigator.of(context).pop(),
+                  child: const Text('转后台下载'),
+                ),
+              ],
+              if (!forced) ...[
+                const SizedBox(height: 6),
+                TextButton(
+                  onPressed: () => Navigator.of(context).pop(),
+                  child: const Text('稍后再说'),
+                ),
+              ],
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+
+  Future<void> _startUpdate(double? progress) async {
+    if (!_clickReported) {
+      _clickReported = true;
+      unawaited(_reportClick());
+    }
+    final localPackage = ref.read(updateUrlProvider);
+    if (progress == 1 && localPackage != null && localPackage.isNotEmpty) {
+      await UpdateService.install(localPackage);
+      return;
+    }
+    await UpdateService.startUpdate(widget.upgrade.url);
+  }
+
+  Future<void> _reportClick() async {
+    if (widget.upgrade.versionCode.isEmpty) return;
+    try {
+      await ref
+          .read(updateApiClientProvider)
+          .reportClick(
+            buildId: widget.upgrade.versionCode,
+            source: widget.source == UpgradeCheckSource.manual
+                ? 'manual'
+                : 'auto',
+          );
+    } catch (_) {}
+  }
+}