feat(invite): 被邀请人列表接口 + 指纹归因(任务3) (#31)

- GET /invitees: 分页 + 名字降级兜底(昵称→微信昵称→脱敏手机号)
- 指纹归因: 落地页采集 + (IP,设备型号)反查撞库 + 时间窗口闸
- test_invite: +5 个列表测试(脱敏/倒序/昵称优先/分页/空), 修指纹测试跨用例串味

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Reviewed-on: #31
Co-authored-by: xiebing <xiebing@wonderable.ai>
Co-committed-by: xiebing <xiebing@wonderable.ai>

pyproject.toml

@@ -34,6 +34,9 @@ dependencies = [
 
     # admin 后台账号密码 hash(用户侧是手机号+验证码登录,不需要密码;admin 才用)
     "bcrypt>=4.0.0",
+
+    # 邀请指纹归因:解析浏览器 UA 拿手机型号(Build.MODEL),跨端匹配用
+    "user-agents>=2.2.0",
 ]
 
 [project.optional-dependencies]