feat: add delete functionality for namespace resources

internal/module/k8s/handler.resource.go

@@ -927,3 +927,33 @@ func K8sConfigMapDelete(ctx context.Context, db *gorm.DB, store store.Store) fib
 		})
 	}
 }
+
+func K8sNamespaceDelete(ctx context.Context, db *gorm.DB, store store.Store) fiber.Handler {
+	return func(c fiber.Ctx) error {
+		var req struct {
+			Name string `json:"name"`
+		}
+
+		if err := json.Unmarshal(c.Body(), &req); err != nil {
+			return resp.R400(c, "", nil, err)
+		}
+
+		if req.Name == "" {
+			return resp.R400(c, "", nil, fmt.Errorf("name is required"))
+		}
+
+		clientset, err := getK8sClient(db)
+		if err != nil {
+			return resp.R500(c, "", nil, err)
+		}
+
+		err = clientset.CoreV1().Namespaces().Delete(c.Context(), req.Name, metav1.DeleteOptions{})
+		if err != nil {
+			return resp.R500(c, "", nil, fmt.Errorf("failed to delete namespace: %w", err))
+		}
+
+		return resp.R200(c, map[string]any{
+			"name": req.Name,
+		})
+	}
+}