Fix translation lookup and dialog refresh behavior

- CloudTranslationService: Check both empty string and actual language code for source translations
- ExportProjectDialog: Add padding to checkbox list
- Detail.razor: Refresh data after translate/import dialogs close

Author: nickprotop

cloud/src/LrmCloud.Api/Services/Translation/CloudTranslationService.cs

@@ -213,10 +213,12 @@ public async Task<TranslateResponseDto> TranslateKeysAsync(
                     }
                     else
                     {
-                        // Look up source translation using the database language code
-                        // (empty string for RESX/Android/iOS default language, actual code for JSON/i18next)
+                        // Look up source translation - check both conventions:
+                        // - CLI sync stores default language with LanguageCode = ""
+                        // - Web import stores with actual code (e.g., "en")
                         var sourceTranslation = key.Translations
-                            .FirstOrDefault(t => t.LanguageCode == sourceLanguageDbCode && t.PluralForm == pluralForm);
+                            .FirstOrDefault(t => (t.LanguageCode == sourceLanguageDbCode || t.LanguageCode == sourceLanguage)
+                                                 && t.PluralForm == pluralForm);
                         sourceText = sourceTranslation?.Value;
                     }
 

cloud/src/LrmCloud.Web/Components/ExportProjectDialog.razor

@@ -26,6 +26,7 @@
                 <RadzenCheckBoxList @bind-Value="_selectedLanguages" Data="@Languages"
                                     TextProperty="Text" ValueProperty="Value"
                                     Orientation="Radzen.Orientation.Vertical"
+                                    Style="padding-top: 0.5rem;"
                                     Disabled="@_isExporting" />
             }
             else

cloud/src/LrmCloud.Web/Pages/Projects/Detail.razor

@@ -314,10 +314,10 @@ else
             },
             new Radzen.DialogOptions { Width = "600px" });
 
-        if (result is TranslateResponseDto translationResult && translationResult.Success)
+        // Refresh data if translation occurred (stats + validation)
+        if (result is not null)
         {
-            // Refresh stats after translation
-            _stats = await ResourceService.GetProjectStatsAsync(ProjectId);
+            await LoadDataAsync();
         }
     }
 
@@ -343,8 +343,8 @@ else
             },
             new Radzen.DialogOptions { Width = "500px" });
 
-        // Refresh data if import was successful
-        if (result is true)
+        // Refresh data if import was successful (or dialog closed after import)
+        if (result is not false)
         {
             await LoadDataAsync();
         }