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/model/server/systemd.dart

@@ -8,26 +8,24 @@ enum SystemdUnitFunc {
   reload,
   enable,
   disable,
-  status,
-  ;
+  status;
 
   IconData get icon => switch (this) {
-        start => Icons.play_arrow,
-        stop => Icons.stop,
-        restart => Icons.refresh,
-        reload => Icons.refresh,
-        enable => Icons.check,
-        disable => Icons.close,
-        status => Icons.info,
-      };
+    start => Icons.play_arrow,
+    stop => Icons.stop,
+    restart => Icons.refresh,
+    reload => Icons.refresh,
+    enable => Icons.check,
+    disable => Icons.close,
+    status => Icons.info,
+  };
 }
 
 enum SystemdUnitType {
   service,
   socket,
   mount,
-  timer,
-  ;
+  timer;
 
   static SystemdUnitType? fromString(String? value) {
     return values.firstWhereOrNull((e) => e.name == value?.toLowerCase());
@@ -36,13 +34,12 @@ enum SystemdUnitType {
 
 enum SystemdUnitScope {
   system,
-  user,
-  ;
+  user;
 
   Color? get color => switch (this) {
-        system => Colors.red,
-        _ => null,
-      };
+    system => Colors.red,
+    _ => null,
+  };
 
   String getCmdPrefix(bool isRoot) {
     if (this == system) {
@@ -57,17 +54,16 @@ enum SystemdUnitState {
   inactive,
   failed,
   activating,
-  deactivating,
-  ;
+  deactivating;
 
   static SystemdUnitState? fromString(String? value) {
     return values.firstWhereOrNull((e) => e.name == value?.toLowerCase());
   }
 
   Color? get color => switch (this) {
-        failed => Colors.red,
-        _ => null,
-      };
+    failed => Colors.red,
+    _ => null,
+  };
 }
 
 final class SystemdUnit {
@@ -85,10 +81,7 @@ final class SystemdUnit {
     required this.state,
   });
 
-  String getCmd({
-    required SystemdUnitFunc func,
-    required bool isRoot,
-  }) {
+  String getCmd({required SystemdUnitFunc func, required bool isRoot}) {
     final prefix = scope.getCmdPrefix(isRoot);
     return '$prefix ${func.name} $name';
   }