feat: Windows compatibility (#836)

* feat: win compatibility

* fix

* fix: uptime parse

* opt.: linux uptime accuracy

* fix: windows temperature fetching

* opt.

* opt.: powershell exec

* refactor: address PR review feedback and improve code quality

### Major Improvements:
- **Refactored Windows status parsing**: Broke down large `_getWindowsStatus` method into 13 smaller, focused helper methods for better maintainability and readability
- **Extracted system detection logic**: Created dedicated `SystemDetector` helper class to separate OS detection concerns from ServerProvider
- **Improved concurrency handling**: Implemented proper synchronization for server updates using Future-based locks to prevent race conditions

### Bug Fixes:
- **Fixed CPU percentage parsing**: Removed incorrect '*100' multiplication in BSD CPU parsing (values were already percentages)
- **Enhanced memory parsing**: Added validation and error handling to BSD memory fallback parsing with proper logging
- **Improved uptime parsing**: Added support for multiple Windows date formats and robust error handling with validation
- **Fixed division by zero**: Added safety checks in Swap.usedPercent getter

### Code Quality Enhancements:
- **Added comprehensive documentation**: Documented Windows CPU counter limitations and approach
- **Strengthened error handling**: Added detailed logging and validation throughout parsing methods
- **Improved robustness**: Enhanced BSD CPU parsing with percentage validation and warnings
- **Better separation of concerns**: Each parsing method now has single responsibility

### Files Changed:
- `lib/data/helper/system_detector.dart` (new): System detection helper
- `lib/data/model/server/cpu.dart`: Fixed percentage parsing and added validation
- `lib/data/model/server/memory.dart`: Enhanced fallback parsing and division-by-zero protection
- `lib/data/model/server/server_status_update_req.dart`: Refactored into 13 focused parsing methods
- `lib/data/provider/server.dart`: Improved synchronization and extracted system detection

🤖 Generated with [Claude Code](https://claude.ai/code)

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

* refactor: parse & shell fn struct

---------

Co-authored-by: Claude <noreply@anthropic.com>

lib/view/page/systemd.dart

@@ -9,15 +9,9 @@ import 'package:server_box/view/page/ssh/page/page.dart';
 final class SystemdPage extends StatefulWidget {
   final SpiRequiredArgs args;
 
-  const SystemdPage({
-    super.key,
-    required this.args,
-  });
+  const SystemdPage({super.key, required this.args});
 
-  static const route = AppRouteArg<void, SpiRequiredArgs>(
-    page: SystemdPage.new,
-    path: '/systemd',
-  );
+  static const route = AppRouteArg<void, SpiRequiredArgs>(page: SystemdPage.new, path: '/systemd');
 
   @override
   State<SystemdPage> createState() => _SystemdPageState();
@@ -37,9 +31,7 @@ final class _SystemdPageState extends State<SystemdPage> {
     return Scaffold(
       appBar: CustomAppBar(
         title: const Text('Systemd'),
-        actions: isDesktop
-            ? [Btn.icon(icon: const Icon(Icons.refresh), onTap: _pro.getUnits)]
-            : null,
+        actions: isDesktop ? [Btn.icon(icon: const Icon(Icons.refresh), onTap: _pro.getUnits)] : null,
       ),
       body: RefreshIndicator(onRefresh: _pro.getUnits, child: _buildBody()),
     );
@@ -54,9 +46,7 @@ final class _SystemdPageState extends State<SystemdPage> {
               duration: Durations.medium1,
               curve: Curves.fastEaseInToSlowEaseOut,
               height: isBusy ? SizedLoading.medium.size : 0,
-              child: isBusy
-                  ? SizedLoading.medium
-                  : const SizedBox.shrink(),
+              child: isBusy ? SizedLoading.medium : const SizedBox.shrink(),
             ),
           ),
         ),
@@ -66,35 +56,24 @@ final class _SystemdPageState extends State<SystemdPage> {
   }
 
   Widget _buildUnitList(VNode<List<SystemdUnit>> units) {
-    return units.listenVal(
-      (units) {
-        if (units.isEmpty) {
-          return SliverToBoxAdapter(
-            child:
-                CenterGreyTitle(libL10n.empty).paddingSymmetric(horizontal: 13),
-          );
-        }
-        return SliverList(
-          delegate: SliverChildBuilderDelegate(
-            (context, index) {
-              final unit = units[index];
-              return ListTile(
-                leading: _buildScopeTag(unit.scope),
-                title: unit.description != null
-                    ? TipText(unit.name, unit.description!)
-                    : Text(unit.name),
-                subtitle: Wrap(children: [
-                  _buildStateTag(unit.state),
-                  _buildTypeTag(unit.type),
-                ]).paddingOnly(top: 7),
-                trailing: _buildUnitFuncs(unit),
-              ).cardx.paddingSymmetric(horizontal: 13);
-            },
-            childCount: units.length,
-          ),
-        );
-      },
-    );
+    return units.listenVal((units) {
+      if (units.isEmpty) {
+        return SliverToBoxAdapter(child: CenterGreyTitle(libL10n.empty).paddingSymmetric(horizontal: 13));
+      }
+      return SliverList(
+        delegate: SliverChildBuilderDelegate((context, index) {
+          final unit = units[index];
+          return ListTile(
+            leading: _buildScopeTag(unit.scope),
+            title: unit.description != null ? TipText(unit.name, unit.description!) : Text(unit.name),
+            subtitle: Wrap(
+              children: [_buildStateTag(unit.state), _buildTypeTag(unit.type)],
+            ).paddingOnly(top: 7),
+            trailing: _buildUnitFuncs(unit),
+          ).cardx.paddingSymmetric(horizontal: 13);
+        }, childCount: units.length),
+      );
+    });
   }
 
   Widget _buildUnitFuncs(SystemdUnit unit) {
@@ -128,11 +107,7 @@ final class _SystemdPageState extends State<SystemdPage> {
       child: Row(
         mainAxisSize: MainAxisSize.min,
         mainAxisAlignment: MainAxisAlignment.spaceAround,
-        children: [
-          Icon(func.icon, size: 19),
-          const SizedBox(width: 10),
-          Text(func.name.capitalize),
-        ],
+        children: [Icon(func.icon, size: 19), const SizedBox(width: 10), Text(func.name.capitalize)],
       ),
     );
   }
@@ -155,8 +130,7 @@ final class _SystemdPageState extends State<SystemdPage> {
         color: color?.withValues(alpha: 0.7) ?? UIs.halfAlpha,
         borderRadius: BorderRadius.circular(5),
       ),
-      child: Text(tag, style: UIs.text11)
-          .paddingSymmetric(horizontal: 5, vertical: 1),
+      child: Text(tag, style: UIs.text11).paddingSymmetric(horizontal: 5, vertical: 1),
     ).paddingOnly(right: noPad ? 0 : 5);
   }
 }