db management fix

apps/api/src/modules/admin/admin.repo.ts

@@ -31,7 +31,14 @@ function parseOptionalDate(value?: string | null) {
 }
 
 export function findAdminByEmail(email: string) {
-  return prisma.adminUser.findUnique({ where: { email } })
+  return prisma.adminUser.findFirst({
+    where: {
+      email: {
+        equals: email,
+        mode: 'insensitive',
+      },
+    },
+  })
 }
 
 export function findAdminByIdOrThrow(id: string) {