Implement counting files only of the latest version

lib/mod.dart

@@ -215,18 +215,71 @@ class Mod {
 
     int size = 0;
     if (!skipFileCount) {
-      size =
+      // Find all directories matching version pattern (like "1.0", "1.4", etc.)
+      final versionDirs =
           Directory(path)
-              .listSync(recursive: true)
+              .listSync(recursive: false)
+              .whereType<Directory>()
               .where(
-                (entity) =>
-                    !entity.path
-                        .split(Platform.pathSeparator)
-                        .last
-                        .startsWith('.'),
+                (dir) => RegExp(
+                  r'^\d+\.\d+$',
+                ).hasMatch(dir.path.split(Platform.pathSeparator).last),
               )
-              .length;
-      logger.info('File count in mod directory: $size');
+              .toList();
+
+      // Find the latest version directory (if any)
+      Directory? latestVersionDir;
+      if (versionDirs.isNotEmpty) {
+        // Sort by version number
+        versionDirs.sort((a, b) {
+          final List<int> vA =
+              a.path
+                  .split(Platform.pathSeparator)
+                  .last
+                  .split('.')
+                  .map(int.parse)
+                  .toList();
+          final List<int> vB =
+              b.path
+                  .split(Platform.pathSeparator)
+                  .last
+                  .split('.')
+                  .map(int.parse)
+                  .toList();
+          return vA[0] != vB[0]
+              ? vA[0] - vB[0]
+              : vA[1] - vB[1]; // Compare major, then minor version
+        });
+        latestVersionDir = versionDirs.last;
+        logger.info(
+          'Latest version directory found: ${latestVersionDir.path.split(Platform.pathSeparator).last}',
+        );
+      }
+
+      // Count all files, excluding older version directories
+      size =
+          Directory(path).listSync(recursive: true).where((entity) {
+            if (entity is! File ||
+                entity.path
+                    .split(Platform.pathSeparator)
+                    .any((part) => part.startsWith('.'))) {
+              return false;
+            }
+
+            // Skip files in version directories except for the latest
+            for (final verDir in versionDirs) {
+              if (verDir != latestVersionDir &&
+                  entity.path.startsWith(verDir.path)) {
+                return false;
+              }
+            }
+
+            return true;
+          }).length;
+
+      logger.info(
+        'File count in mod directory (with only latest version): $size',
+      );
     }
 
     // Check if this is RimWorld base game or expansion