✨ 业务数量单位改走计量单位，并放开运输计划日期必填

发货模板、运输计划、运单与总单调度从计量单位取 unitName；修复调度提交顶层单位为空，并取消计划开始/结束日期必填。

Co-authored-by: Cursor <cursoragent@cursor.com>

src/utils/measurement-unit.js

@@ -0,0 +1,27 @@
+import { getList as getMeasurementUnitList } from '@/api/base/measurement-unit';
+
+/**
+ * 加载启用状态的计量单位选项，展示/取值均为「计量单位」字段（unitName）。
+ * @returns {Promise<Array<{ label: string, value: string, dimension: string, id: string|number }>>}
+ */
+export const loadMeasurementUnitOptions = () => {
+  return getMeasurementUnitList(1, 9999, { status: 1 }).then(res => {
+    const data = res?.data?.data || res?.data || {};
+    const records = Array.isArray(data) ? data : data.records || [];
+    const names = new Set();
+    return records
+      .filter(item => item.status === undefined || item.status === null || Number(item.status) === 1)
+      .map(item => {
+        const name = String(item.unitName || '').trim();
+        if (!name || names.has(name)) return null;
+        names.add(name);
+        return {
+          id: item.id,
+          label: name,
+          value: name,
+          dimension: String(item.dimension || '').trim(),
+        };
+      })
+      .filter(Boolean);
+  });
+};