generate: Fix spacing and comment issues

generate/generate.go

@@ -20,7 +20,6 @@ const preamble = `
 // The source file is located at <path>
 // Please edit that file instead, and re-compile it to this location.
 // HOPP, TAPE, METADAPT, PDL/0 (c) 2025 holanet.xyz
-
 `
 
 const static = `
@@ -58,6 +57,7 @@ func boolInt(input bool) int {
 	}
 }
 
+// ensure ucontainer is always imported
 var _ hopp.Option[int]
 `
 
@@ -1140,8 +1140,10 @@ func (this *Generator) generateTypeTableDefined(typ TypeTableDefined) (n int, er
 
 	for _, key := range slices.Sorted(maps.Keys(typ.Fields)) {
 		field := typ.Fields[key]
+		if field.Doc != "" {
 			nn, err := this.iprintf("%s\n", this.formatComment(field.Doc))
 			n += nn; if err != nil { return n, err }
+		}
 		nn, err = this.iprintf("%s ", field.Name)
 		n += nn; if err != nil { return n, err }
 		if field.Option {