fix: Corretto caricamento version.json con percorso robusto e copia automatica in output

Data_Coupler/Data_Coupler.csproj

@@ -29,4 +29,10 @@
     </PackageReference>
   </ItemGroup>
 
+  <ItemGroup>
+    <Content Update="wwwroot\version.json">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </Content>
+  </ItemGroup>
+
 </Project>

Data_Coupler/Services/VersionService.cs

@@ -43,10 +43,30 @@ namespace Data_Coupler.Services
         {
             try
             {
-                // Cerca il file version.json nella root dell'applicazione
+                // Cerca il file version.json nella cartella wwwroot o nella root del progetto
-                var versionFilePath = Path.Combine(_env.ContentRootPath, "version.json");
+                string? versionFilePath = null;
+                
+                // Prima prova in wwwroot
+                if (!string.IsNullOrEmpty(_env.WebRootPath))
+                {
+                    var wwwrootPath = Path.Combine(_env.WebRootPath, "version.json");
+                    if (File.Exists(wwwrootPath))
+                    {
+                        versionFilePath = wwwrootPath;
+                    }
+                }
+                
+                // Se non trovato, prova nella root del progetto
+                if (versionFilePath == null)
+                {
+                    var contentPath = Path.Combine(_env.ContentRootPath, "wwwroot", "version.json");
+                    if (File.Exists(contentPath))
+                    {
+                        versionFilePath = contentPath;
+                    }
+                }
 
-                if (File.Exists(versionFilePath))
+                if (versionFilePath != null && File.Exists(versionFilePath))
                 {
                     var json = File.ReadAllText(versionFilePath);
                     var version = JsonSerializer.Deserialize<VersionInfo>(json, new JsonSerializerOptions
@@ -56,13 +76,14 @@ namespace Data_Coupler.Services
 
                     if (version != null)
                     {
-                        _logger.LogInformation("Version loaded: {Version}", version.GetFullVersion());
+                        _logger.LogInformation("Version loaded from {Path}: {Version}", versionFilePath, version.GetFullVersion());
                         return version;
                     }
                 }
                 else
                 {
-                    _logger.LogWarning("version.json not found at {Path}, using default version", versionFilePath);
+                    _logger.LogWarning("version.json not found. Searched in WebRootPath: {WebRoot}, ContentRootPath: {ContentRoot}", 
+                        _env.WebRootPath ?? "null", _env.ContentRootPath);
                 }
             }
             catch (Exception ex)