Web-Controller um Kürzel-Unterstützung erweitert

- max8 Validator für Kürzel-Längenbegrenzung hinzugefügt
- Datum-Parsing für Formulare verbessert
- Kürzel-Feld in Create- und Update-Controllern integriert

src/app/project/web/web.go

@@ -41,6 +41,16 @@ type ProjectDetailData struct {
 func RegisterController(appCtx *hctx.AppCtx, webCtx *web.Ctx, mongoManager *project.MongoManager) {
 	log.Println("INFO: Registering project controllers...")
 
+	// Add max8 validator for string length validation (needed for project shortcut field)
+	appCtx.Validator.AddFunc("max8", func(value any) error {
+		if str, ok := value.(string); ok {
+			if len(str) > 8 {
+				return errors.New("harmony.error.validation.max")
+			}
+		}
+		return nil
+	})
+
 	// Initialize the data access layer (repository) and business logic layer (service)
 	// Repository handles MongoDB operations, Service handles business rules
 	projectRepo := project.NewMongoProjectRepository(mongoManager.GetDatabase())
@@ -166,6 +176,21 @@ func projectCreateController(appCtx *hctx.AppCtx, webCtx *web.Ctx, service *proj
 			return io.Error(web.ErrInternal, err)
 		}
 
+		// Manual parsing for date fields since web.ReadForm doesn't support time.Time
+		request := io.Request()
+		if err := request.ParseForm(); err == nil {
+			if startDateStr := request.FormValue("StartDate"); startDateStr != "" {
+				if startDate, parseErr := time.Parse("2006-01-02", startDateStr); parseErr == nil {
+					toCreate.StartDate = startDate
+				}
+			}
+			if endDateStr := request.FormValue("EndDate"); endDateStr != "" {
+				if endDate, parseErr := time.Parse("2006-01-02", endDateStr); parseErr == nil {
+					toCreate.EndDate = endDate
+				}
+			}
+		}
+
 		// If there are validation errors, redisplay the form with error messages
 		if validationErrs != nil {
 			log.Printf("WARN: Project creation validation failed: %d errors", len(validationErrs))
@@ -325,6 +350,21 @@ func projectUpdateController(appCtx *hctx.AppCtx, webCtx *web.Ctx, service *proj
 			return io.InlineError(web.ErrInternal, err)
 		}
 
+		// Manual parsing for date fields since web.ReadForm doesn't support time.Time
+		request := io.Request()
+		if err := request.ParseForm(); err == nil {
+			if startDateStr := request.FormValue("StartDate"); startDateStr != "" {
+				if startDate, parseErr := time.Parse("2006-01-02", startDateStr); parseErr == nil {
+					toUpdate.StartDate = startDate
+				}
+			}
+			if endDateStr := request.FormValue("EndDate"); endDateStr != "" {
+				if endDate, parseErr := time.Parse("2006-01-02", endDateStr); parseErr == nil {
+					toUpdate.EndDate = endDate
+				}
+			}
+		}
+
 		// If validation fails, redisplay the form with error messages
 		if validationErrs != nil {
 			log.Printf("WARN: Project update validation failed: %d errors", len(validationErrs))