feat: UnP4kc fix missing runtime

close https://github.com/StarCitizenToolBox/app/issues/27

lib/ui/home/localization/advanced_localization_ui.dart

@@ -9,6 +9,7 @@ import 'package:re_highlight/styles/vs2015.dart';
 import 'package:starcitizen_doctor/data/app_advanced_localization_data.dart';
 import 'package:starcitizen_doctor/ui/home/home_ui_model.dart';
 import 'package:starcitizen_doctor/ui/home/localization/advanced_localization_ui_model.dart';
+import 'package:starcitizen_doctor/ui/tools/unp4kc/unp4kc_ui.dart';
 import 'package:starcitizen_doctor/widgets/widgets.dart';
 import 'package:super_sliver_list/super_sliver_list.dart';
 
@@ -51,11 +52,8 @@ class AdvancedLocalizationUI extends HookConsumerWidget {
             : Column(
                 children: [
                   if (state.errorMessage.isNotEmpty)
-                    Padding(
+                    UnP4kErrorWidget(
-                      padding: const EdgeInsets.all(32),
+                      errorMessage: state.errorMessage,
-                      child: Center(
-                        child: Text(state.errorMessage),
-                      ),
                     )
                   else ...[
                     Row(

lib/ui/tools/tools_ui_model.dart

@@ -594,18 +594,6 @@ class ToolsUIModel extends _$ToolsUIModel {
   }
 
   static rsiEnhance(BuildContext context) async {
-    final userOK = await showConfirmDialogs(
-        context,
-        S.current.tools_rsi_launcher_enhance_note_title,
-        Column(
-          mainAxisSize: MainAxisSize.min,
-          children: [
-            Text(S.current.tools_rsi_launcher_enhance_note_msg),
-          ],
-        ),
-        constraints:
-            BoxConstraints(maxWidth: MediaQuery.of(context).size.width * .55));
-    if (!userOK) return;
     if ((await SystemHelper.getPID("\"RSI Launcher\"")).isNotEmpty) {
       if (!context.mounted) return;
       showToast(

lib/ui/tools/unp4kc/unp4kc_ui.dart

@@ -10,6 +10,7 @@ import 'package:starcitizen_doctor/data/app_unp4k_p4k_item_data.dart';
 import 'package:starcitizen_doctor/provider/unp4kc.dart';
 import 'package:starcitizen_doctor/widgets/widgets.dart';
 import 'package:super_sliver_list/super_sliver_list.dart';
+import 'package:url_launcher/url_launcher_string.dart';
 
 class UnP4kcUI extends HookConsumerWidget {
   const UnP4kcUI({super.key});
@@ -29,12 +30,7 @@ class UnP4kcUI extends HookConsumerWidget {
   Widget makeBody(BuildContext context, Unp4kcState state, Unp4kCModel model,
       List<AppUnp4kP4kItemData>? files, List<String> paths) {
     if (state.errorMessage.isNotEmpty) {
-      return Padding(
+      return UnP4kErrorWidget(errorMessage: state.errorMessage);
-        padding: const EdgeInsets.all(24),
-        child: Center(
-          child: Text(state.errorMessage),
-        ),
-      );
     }
     return state.files == null
         ? Column(
@@ -282,3 +278,47 @@ class _TextTempWidget extends HookConsumerWidget {
     );
   }
 }
+
+class UnP4kErrorWidget extends StatelessWidget {
+  final String errorMessage;
+
+  const UnP4kErrorWidget({super.key, required this.errorMessage});
+
+  static const _downloadUrl =
+      "https://aka.ms/dotnet-core-applaunch?missing_runtime=true&arch=x64&rid=win-x64&os=win10&apphost_version=8.0.0";
+
+  @override
+  Widget build(BuildContext context) {
+    return Padding(
+      padding: const EdgeInsets.all(24),
+      child: Center(
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            if (errorMessage.contains(
+                    "You must install .NET to run this application") ||
+                errorMessage.contains(
+                    "You must install or update .NET to run this application")) ...[
+              const Text(
+                "缺少运行库",
+                style: TextStyle(fontSize: 16),
+              ),
+              const SizedBox(height: 6),
+              const Text("使用此功能需安装 .NET8 运行库，请点击下方按钮下载安装，安装成功后重新打开此页面即可继续使用。"),
+              const SizedBox(height: 16),
+              FilledButton(
+                  child: const Padding(
+                    padding: EdgeInsets.symmetric(horizontal: 12, vertical: 3),
+                    child: Text("安装运行库"),
+                  ),
+                  onPressed: () {
+                    launchUrlString(_downloadUrl);
+                  }),
+            ] else
+              Text(errorMessage),
+          ],
+        ),
+      ),
+    );
+  }
+}