refactor: 使用 Intl.DateTimeFormat 生成时间戳

vue.config.js

@@ -217,16 +217,15 @@ class VersionInjectPlugin {
       console.log(`[H5Zip] 输出目录名正确: ${outputDirName}`);
     }
 
-    // 上海时区时间戳格式: 20260511_1058
-    const now = new Date();
-    const shanghaiOffset = 8 * 60;
-    const shanghaiTime = new Date(now.getTime() + shanghaiOffset * 60 * 1000);
-    const y = shanghaiTime.getFullYear();
-    const M = String(shanghaiTime.getMonth() + 1).padStart(2, '0');
-    const d = String(shanghaiTime.getDate()).padStart(2, '0');
-    const h = String(shanghaiTime.getHours()).padStart(2, '0');
-    const m = String(shanghaiTime.getMinutes()).padStart(2, '0');
-    const ts = `${y}${M}${d}_${h}${m}`;
+    // 标准时区时间戳格式: 20260511_1058
+    const fmt = new Intl.DateTimeFormat('en-CA', {
+      timeZone: 'Asia/Shanghai',
+      year: 'numeric', month: '2-digit', day: '2-digit',
+      hour: '2-digit', minute: '2-digit', hour12: false
+    });
+    const parts = fmt.formatToParts(new Date());
+    const get = (t) => parts.find(p => p.type === t).value;
+    const ts = `${get('year')}${get('month')}${get('day')}_${get('hour')}${get('minute')}`;
 
     const zipFileName = `${outputDirName}-${this._cachedCommitId}-${ts}.zip`;
     const zipFilePath = path.join(h5Dir, zipFileName);