fix preview inputs and markup preview

frontend/tests/nodeWidgetDefaults.test.mjs

@@ -0,0 +1,31 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+
+import { buildDefaultWidgetValues, getDefaultWidgetValue } from '../src/nodeWidgetDefaults.js';
+
+test('enum widget defaults honor opts.default instead of the first option', () => {
+  assert.equal(
+    getDefaultWidgetValue([['line', 'rectangle', 'circle', 'arrow'], { default: 'arrow' }]),
+    'arrow',
+  );
+});
+
+test('buildDefaultWidgetValues keeps non-data required widget defaults', () => {
+  assert.deepEqual(
+    buildDefaultWidgetValues({
+      input: {
+        required: {
+          input: ['ANNOTATION_SOURCE', { label: 'Input' }],
+          shape: [['line', 'rectangle', 'circle', 'arrow'], { default: 'arrow' }],
+          stroke_color: ['STRING', { default: '#ff0000', color_picker: true }],
+          stroke_width: ['INT', { default: 3 }],
+        },
+      },
+    }),
+    {
+      shape: 'arrow',
+      stroke_color: '#ff0000',
+      stroke_width: 3,
+    },
+  );
+});