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

src/data/dto/user/user.ts

@@ -0,0 +1,59 @@
+/**
+ * 用户 DTO
+ */
+import {
+  UserSchema,
+  type UserInput,
+  type UserData,
+} from "@/data/schemas/user/user";
+import { PersonalityTraits } from "./personality_traits";
+
+export class User {
+  declare readonly id: string;
+  declare readonly username: string;
+  declare readonly email: string;
+  declare readonly platform: string;
+  declare readonly intimacy: number;
+  declare readonly dolBalance: number;
+  declare readonly relationshipStage: string;
+  declare readonly currentMood: string;
+  declare readonly personalityTraits: PersonalityTraits;
+  declare readonly preferredLanguage: string;
+  declare readonly createdAt: string;
+  declare readonly lastMessageAt: string;
+  declare readonly avatarUrl: string;
+  declare readonly loginProvider: string;
+  declare readonly isGuest: boolean;
+
+  private constructor(input: UserInput) {
+    const data = UserSchema.parse(input);
+    Object.assign(this, {
+      ...data,
+      personalityTraits: PersonalityTraits.from(data.personalityTraits),
+    });
+    Object.freeze(this);
+  }
+
+  static from(input: UserInput): User {
+    return new User(input);
+  }
+
+  static fromJson(json: unknown): User {
+    return User.from(json as UserInput);
+  }
+
+  /**
+   * 创建一个具有空 id/username 的 User 实例（用于可选 user 字段的默认占位）
+   */
+  static empty(): User {
+    return new User({ id: "", username: "" });
+  }
+
+  toJson(): UserData {
+    const { personalityTraits, ...rest } = this;
+    return {
+      ...rest,
+      personalityTraits: personalityTraits.toJson(),
+    };
+  }
+}