fix: repair healthz mysql check and im tenant creation

- healthz: Scan(new(int)) is not supported by GoFrame, use .One() so
  the mysql check no longer reports a false failure
- im_tenant: set updated_by on insert for both im_tenant and
  im_tenant_config, otherwise new tenant creation fails with
  "Field 'updated_by' doesn't have a default value"
- gitignore: exclude .trae/ local debugging artifacts

server/internal/controller/health/health.go

@@ -30,7 +30,7 @@ func Serve(r *ghttp.Request) {
 	checks := map[string]string{}
 	statusCode := http.StatusOK
 
-	if err := g.DB().Ctx(ctx).Raw("SELECT 1").Scan(new(int)); err != nil {
+	if _, err := g.DB().Ctx(ctx).Raw("SELECT 1").One(); err != nil {
 		checks["mysql"] = err.Error()
 		statusCode = http.StatusServiceUnavailable
 	} else {