refactor(ui): share native dropdown and numeric field surfaces

src/ui/formField.js

@@ -0,0 +1,36 @@
+/**
+ * Build a native numeric field without listeners, parsing or commit policy.
+ * Owners retain drafts, validation, input/change timing and disposal. Static
+ * selects and number inputs share the gev-field surface in their templates;
+ * options remain owned by each feature (no replacement popup or keyboard code).
+ * @param {object} options
+ * @param {Document} [options.documentRef]
+ * @param {string} [options.className] Additional density/layout hooks.
+ * @param {number|string} [options.min]
+ * @param {number|string} [options.max]
+ * @param {number|string} [options.step]
+ * @param {number|string} [options.value]
+ * @param {boolean} [options.disabled]
+ * @param {string} [options.ariaLabel] Already translated accessible name.
+ * @returns {HTMLInputElement}
+ */
+export function createNumberInput({
+  documentRef = globalThis.document,
+  className = '',
+  min,
+  max,
+  step,
+  value,
+  disabled = false,
+  ariaLabel,
+} = {}) {
+  const input = documentRef.createElement('input');
+  input.type = 'number';
+  input.className = `gev-field${className ? ` ${className}` : ''}`;
+  for (const [key, setting] of Object.entries({ min, max, step, value })) {
+    if (setting !== undefined) input[key] = setting;
+  }
+  input.disabled = disabled;
+  if (ariaLabel !== undefined) input.setAttribute('aria-label', ariaLabel);
+  return input;
+}