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/ssh/page/keyboard.dart

@@ -13,7 +13,7 @@ extension _Keyboard on SSHPageState {
         _handleEscKeyOrBackButton();
         return true; // Mark as handled so it doesn't propagate
       }
-      if (event.logicalKey == LogicalKeyboardKey.shiftLeft || 
+      if (event.logicalKey == LogicalKeyboardKey.shiftLeft ||
           event.logicalKey == LogicalKeyboardKey.shiftRight) {
         // Handle shift key press
         _terminal.keyInput(TerminalKey.shift);

lib/view/page/ssh/page/virt_key.dart

@@ -88,10 +88,7 @@ extension _VirtKey on SSHPageState {
         while (initPath == null) {
           // Check if we've exceeded timeout
           if (DateTime.now().difference(startTime) > timeout) {
-            contextSafe?.showRoundDialog(
-              title: libL10n.error,
-              child: Text(libL10n.empty),
-            );
+            contextSafe?.showRoundDialog(title: libL10n.error, child: Text(libL10n.empty));
             return;
           }
 
@@ -119,10 +116,7 @@ extension _VirtKey on SSHPageState {
         }
 
         if (!initPath.startsWith('/')) {
-          context.showRoundDialog(
-            title: libL10n.error,
-            child: Text('${l10n.remotePath}: $initPath'),
-          );
+          context.showRoundDialog(title: libL10n.error, child: Text('${l10n.remotePath}: $initPath'));
           return;
         }
 
@@ -138,10 +132,7 @@ extension _VirtKey on SSHPageState {
       if (text != null) {
         _terminal.textInput(text);
       } else {
-        context.showRoundDialog(
-          title: libL10n.error,
-          child: Text(libL10n.empty),
-        );
+        context.showRoundDialog(title: libL10n.error, child: Text(libL10n.empty));
       }
     });
   }