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/data/provider/systemd.dart

@@ -44,10 +44,8 @@ final class SystemdProvider {
         }
       }
 
-      final parsedUserUnits =
-          await _parseUnitObj(userUnits, SystemdUnitScope.user);
-      final parsedSystemUnits =
-          await _parseUnitObj(systemUnits, SystemdUnitScope.system);
+      final parsedUserUnits = await _parseUnitObj(userUnits, SystemdUnitScope.user);
+      final parsedSystemUnits = await _parseUnitObj(systemUnits, SystemdUnitScope.system);
       this.units.value = [...parsedUserUnits, ...parsedSystemUnits];
     } catch (e, s) {
       Loggers.app.warning('Parse systemd', e, s);
@@ -56,14 +54,10 @@ final class SystemdProvider {
     isBusy.value = false;
   }
 
-  Future<List<SystemdUnit>> _parseUnitObj(
-    List<String> unitNames,
-    SystemdUnitScope scope,
-  ) async {
-    final unitNames_ = unitNames
-        .map((e) => e.trim().split('/').last.split('.').first)
-        .toList();
-    final script = '''
+  Future<List<SystemdUnit>> _parseUnitObj(List<String> unitNames, SystemdUnitScope scope) async {
+    final unitNames_ = unitNames.map((e) => e.trim().split('/').last.split('.').first).toList();
+    final script =
+        '''
 for unit in ${unitNames_.join(' ')}; do
   state=\$(systemctl show --no-pager \$unit)
   echo -n "${ShellFunc.seperator}\n\$state"
@@ -108,13 +102,9 @@ done
         continue;
       }
 
-      parsedUnits.add(SystemdUnit(
-        name: name,
-        type: unitType,
-        scope: scope,
-        state: unitState,
-        description: description,
-      ));
+      parsedUnits.add(
+        SystemdUnit(name: name, type: unitType, scope: scope, state: unitState, description: description),
+      );
     }
 
     parsedUnits.sort((a, b) {
@@ -131,7 +121,8 @@ done
     return parsedUnits;
   }
 
-  late final _getUnitsCmd = '''
+  late final _getUnitsCmd =
+      '''
 get_files() {
   unit_type=\$1
   base_dir=\$2