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/app/menu/server_func.dart

@@ -12,8 +12,7 @@ enum ServerFuncBtn {
   snippet(),
   iperf(),
   // pve(),
-  systemd(1058),
-  ;
+  systemd(1058);
 
   final int? addedVersion;
 
@@ -41,24 +40,24 @@ enum ServerFuncBtn {
   ].map((e) => e.index).toList();
 
   IconData get icon => switch (this) {
-        sftp => Icons.insert_drive_file,
-        snippet => Icons.code,
-        //pkg => Icons.system_security_update,
-        container => FontAwesome.docker_brand,
-        process => Icons.list_alt_outlined,
-        terminal => Icons.terminal,
-        iperf => Icons.speed,
-        systemd => MingCute.plugin_2_fill,
-      };
+    sftp => Icons.insert_drive_file,
+    snippet => Icons.code,
+    //pkg => Icons.system_security_update,
+    container => FontAwesome.docker_brand,
+    process => Icons.list_alt_outlined,
+    terminal => Icons.terminal,
+    iperf => Icons.speed,
+    systemd => MingCute.plugin_2_fill,
+  };
 
   String get toStr => switch (this) {
-        sftp => 'SFTP',
-        snippet => l10n.snippet,
-        //pkg => l10n.pkg,
-        container => l10n.container,
-        process => l10n.process,
-        terminal => l10n.terminal,
-        iperf => 'iperf',
-        systemd => 'Systemd',
-      };
+    sftp => 'SFTP',
+    snippet => l10n.snippet,
+    //pkg => l10n.pkg,
+    container => l10n.container,
+    process => l10n.process,
+    terminal => l10n.terminal,
+    iperf => 'iperf',
+    systemd => 'Systemd',
+  };
 }