Debug

models/workflow/plantuml.go

@@ -183,12 +183,16 @@ func plantUMLLinkComment(link graph.GraphLink) string {
 // Flat-map helpers (shared by import & export)
 // ---------------------------------------------------------------------------
 
-// plantUMLSkipFields lists JSON field names that must never appear in comments.
-// Checked against the root key of each dot-notation path.
+// plantUMLSkipFields lists JSON field names (root keys) that must never appear
+// in human-readable comments. All names are the actual JSON tags, not Go field names.
 var plantUMLSkipFields = map[string]bool{
-	// identity / meta
-	"uuid": true, "name": true, "created_at": true, "updated_at": true,
-	"creator_id": true, "is_draft": true,
+	// AbstractObject — identity & audit (json tags)
+	"id": true, "name": true, "is_draft": true, "access_mode": true, "signature": true,
+	"creator_id": true, "user_creator_id": true,
+	"creation_date": true, "update_date": true,
+	"updater_id": true, "user_updater_id": true,
+	// internal resource type identifier (AbstractResource.Type / GetType())
+	"type": true,
 	// relationships / pricing
 	"instances": true, "partnerships": true,
 	"allowed_booking_modes": true, "usage_restrictions": true,
@@ -200,6 +204,10 @@ var plantUMLSkipFields = map[string]bool{
 	"kind": true, "params": true,
 }
 
+// zeroTimeStr is the JSON representation of Go's zero time.Time value.
+// encoding/json does not treat it as "empty" for omitempty, so we filter it explicitly.
+const zeroTimeStr = "0001-01-01T00:00:00Z"
+
 // plantUMLToFlatMap marshals v to JSON and flattens the resulting object into
 // a map[string]string using dot notation for nested keys, skipping zero values
 // and known meta fields.
@@ -247,7 +255,7 @@ func plantUMLFlattenJSON(m map[string]interface{}, prefix string, result map[str
 				result[fullKey] = "true"
 			}
 		case string:
-			if val != "" {
+			if val != "" && val != zeroTimeStr {
 				result[fullKey] = val
 			}
 		}