fix permissions and teacher attendance workflows

apps/server/src/database/date-normalization.ts

@@ -0,0 +1,15 @@
+const DATE_ONLY_PATTERN = /^\d{4}-\d{2}-\d{2}$/;
+const ISO_DATE_PREFIX_PATTERN = /^(\d{4}-\d{2}-\d{2})T/;
+
+export function normalizeDateOnly(value?: string | null): string | null | undefined {
+  if (value == null || value === '') return value;
+  if (DATE_ONLY_PATTERN.test(value)) return value;
+
+  const isoPrefix = ISO_DATE_PREFIX_PATTERN.exec(value)?.[1];
+  if (isoPrefix) {
+    const date = new Date(value);
+    if (!Number.isNaN(date.getTime())) return date.toISOString().slice(0, 10);
+  }
+
+  throw new Error(`无效日期格式: ${value}`);
+}