refactor(data): move dto and schemas out of services directory

src/data/schemas/auth/send_code_request.ts

@@ -0,0 +1,12 @@
+/**
+ * 发送验证码请求
+ * 原始 Dart: SendCodeRequest (lib/data/models/auth/auth_request.dart)
+ */
+import { z } from "zod";
+
+export const SendCodeRequestSchema = z.object({
+  email: z.string(),
+});
+
+export type SendCodeRequestInput = z.input<typeof SendCodeRequestSchema>;
+export type SendCodeRequestData = z.output<typeof SendCodeRequestSchema>;