完善采购审批流程、企业微信通知和采购专用章

po_app/static/money.js

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+/* The same rule as money.py: 4 decimal places, round each line half up to cents. */
+(function (root) {
+  function units(value) {
+    const s = String(value || '0').trim();
+    if (!/^\d+(\.\d{0,4})?$/.test(s)) throw new Error('数量和单价须为非负数字，最多四位小数');
+    const parts = s.split('.');
+    const n = BigInt(parts[0]) * 10000n + BigInt((parts[1] || '').padEnd(4, '0'));
+    if (n > 9999999990000n) throw new Error('数量或单价过大');
+    return n;
+  }
+  function lineCents(qty, price) {
+    const cents = (units(qty) * units(price) + 500000n) / 1000000n;
+    if (cents > 99999999999999n) throw new Error('金额过大');
+    return cents;
+  }
+  function format(cents) {
+    return (cents / 100n).toString() + '.' + (cents % 100n).toString().padStart(2, '0');
+  }
+  const api = {units, lineCents, format};
+  if (typeof module !== 'undefined') module.exports = api;
+  root.POMoney = api;
+})(typeof window === 'undefined' ? globalThis : window);