feat (router): 新增采购详情路由，优化预警数量管理功能

在管理员模块与商家模块中新增采购详情页面路由。
升级预警数量管理组件，优化交互体验与功能逻辑。

manager/src/views/procurement/constants.js

@@ -0,0 +1,91 @@
+export const PROCUREMENT_STATUS = {
+  DRAFT: "待提交",
+  SUBMITTED: "已提交",
+  PENDING_INBOUND: "待入库",
+  PARTIAL_INBOUND: "部分入库",
+  CLOSED: "已关闭",
+  COMPLETED: "已完成",
+  REJECTED: "已拒绝",
+};
+
+export const PROCUREMENT_STATUS_TAG = {
+  DRAFT: "info",
+  SUBMITTED: "warning",
+  PENDING_INBOUND: "primary",
+  PARTIAL_INBOUND: "warning",
+  CLOSED: "info",
+  COMPLETED: "success",
+  REJECTED: "danger",
+};
+
+export const DAMAGE_STATUS = {
+  DRAFT: "待提交",
+  SUBMITTED: "待审核",
+  APPROVED: "已通过",
+  REJECTED: "已驳回",
+  CANCELLED: "已作废",
+  COMPLETED: "已完成",
+};
+
+export const DAMAGE_STATUS_TAG = {
+  DRAFT: "info",
+  SUBMITTED: "warning",
+  APPROVED: "primary",
+  REJECTED: "danger",
+  CANCELLED: "info",
+  COMPLETED: "success",
+};
+
+export const MARKET_ENABLE = {
+  UPPER: "上架",
+  DOWN: "下架",
+};
+
+export const STOCK_REASON_CATEGORY = {
+  INBOUND: "入库",
+  OUTBOUND: "出库",
+  DAMAGE: "报损",
+};
+
+export function stockReasonCategoryText(category) {
+  return STOCK_REASON_CATEGORY[category] || category || "-";
+}
+
+export function procurementStatusText(status) {
+  return PROCUREMENT_STATUS[status] || status || "-";
+}
+
+export function procurementStatusTag(status) {
+  return PROCUREMENT_STATUS_TAG[status] || "info";
+}
+
+export function damageStatusText(status) {
+  return DAMAGE_STATUS[status] || status || "-";
+}
+
+export function damageStatusTag(status) {
+  return DAMAGE_STATUS_TAG[status] || "info";
+}
+
+export function formatMoney(val) {
+  if (val === null || val === undefined || val === "") return "0.00";
+  return Number(val).toFixed(2);
+}
+
+export function exportCsv(filename, headers, rows) {
+  const escape = (v) => {
+    const s = v == null ? "" : String(v);
+    if (s.includes(",") || s.includes('"') || s.includes("\n")) {
+      return `"${s.replace(/"/g, '""')}"`;
+    }
+    return s;
+  };
+  const lines = [headers.map(escape).join(",")];
+  rows.forEach((row) => lines.push(row.map(escape).join(",")));
+  const blob = new Blob(["\uFEFF" + lines.join("\n")], { type: "text/csv;charset=utf-8;" });
+  const link = document.createElement("a");
+  link.href = URL.createObjectURL(blob);
+  link.download = filename;
+  link.click();
+  URL.revokeObjectURL(link.href);
+}