fix: refine mini program nickname collection flow

server-rs/crates/shared-contracts/src/auth.rs

@@ -253,6 +253,7 @@ pub struct WechatMiniProgramLoginResponse {
     pub token: String,
     pub binding_status: String,
     pub user: AuthUserPayload,
+    pub created: bool,
 }
 
 pub fn build_available_login_methods(
@@ -389,4 +390,29 @@ mod tests {
             })
         );
     }
+
+    #[test]
+    fn wechat_mini_program_login_response_marks_created_user() {
+        let payload = serde_json::to_value(WechatMiniProgramLoginResponse {
+            token: "token-001".to_string(),
+            binding_status: AUTH_BINDING_STATUS_PENDING_BIND_PHONE.to_string(),
+            user: AuthUserPayload {
+                id: "user_001".to_string(),
+                public_user_code: "SY-00000001".to_string(),
+                display_name: "微信旅人".to_string(),
+                avatar_url: None,
+                phone_number: None,
+                phone_number_masked: None,
+                login_method: AUTH_LOGIN_METHOD_WECHAT.to_string(),
+                binding_status: AUTH_BINDING_STATUS_PENDING_BIND_PHONE.to_string(),
+                wechat_bound: true,
+                wechat_display_name: None,
+                wechat_account: Some("wx-openid-001".to_string()),
+            },
+            created: true,
+        })
+        .expect("payload should serialize");
+
+        assert_eq!(payload["created"], serde_json::Value::Bool(true));
+    }
 }