feat: 完成P6-P8后端能力与P9路由重构（V1-V2,D1,D3,B1-B2,B4,I1-I4,P9A2-P9A3）

server/src/services/integrations/travel.js

@@ -0,0 +1,40 @@
+function normalizeTravelImportRows(rows) {
+  if (!Array.isArray(rows)) {
+    return [];
+  }
+
+  return rows
+    .map((item) => {
+      const source = String(item?.source ?? "manual").trim().toLowerCase();
+      const externalOrderNo = String(item?.externalOrderNo ?? "").trim();
+      const employeeId = String(item?.employeeId ?? "").trim();
+      if (!externalOrderNo || !employeeId) {
+        return null;
+      }
+
+      const amountRaw = item?.amount;
+      const amount = amountRaw == null || amountRaw === "" ? null : Number(amountRaw);
+      const occurredAt = item?.occurredAt
+        ? new Date(`${String(item.occurredAt).slice(0, 10)}T00:00:00.000Z`)
+        : null;
+
+      return {
+        source,
+        externalOrderNo,
+        employeeId,
+        linkedReimbursementId:
+          item?.linkedReimbursementId && String(item.linkedReimbursementId).trim()
+            ? String(item.linkedReimbursementId).trim()
+            : null,
+        amount: Number.isFinite(amount) ? amount.toFixed(2) : null,
+        currency: String(item?.currency ?? "CNY").trim().toUpperCase() || "CNY",
+        occurredAt,
+        rawPayload: item ?? null,
+      };
+    })
+    .filter(Boolean);
+}
+
+module.exports = {
+  normalizeTravelImportRows,
+};