docs/api目录文档分类和补全

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Co-authored-by: guke <guke@autohome.com.cn>
Reviewed-on: #111
This commit was merged in pull request #111.
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# 邀请绑定(bind + landing-track
> 所属:Invite 组(前缀 `/api/v1/invite` | 鉴权:bind 需 Bearer / landing-track 无需鉴权 | [← 返回 API 索引](../README.md)
---
## POST /bind — 绑定邀请人
把当前登录用户(被邀请人)绑定到某邀请码。支持三种归因路径:clipboard(首启读剪贴板)、manual(手动输入邀请码)、fingerprint(指纹兜底反查)。绑定成功双方各发 1 万金币。
### 入参
| 字段 | 类型 | 必填 | 说明 |
|---|---|---|---|
| `invite_code` | string \| null | ❌ | 邀请码;走指纹兜底时为空 |
| `channel` | string | ✅ | 归因来源:`clipboard` / `manual` / `fingerprint` |
| `fingerprint` | object \| null | ❌ | 指纹兜底时必传 |
| `fingerprint.screen` | string | - | 屏幕分辨率(如 `1080x2400` |
| `fingerprint.device_model` | string | - | 设备型号(如 `24115RA8EC` |
Mock 入参(clipboard 归因):
```json
{
"invite_code": "A3F8K2",
"channel": "clipboard",
"fingerprint": null
}
```
Mock 入参(指纹兜底):
```json
{
"invite_code": null,
"channel": "fingerprint",
"fingerprint": {
"screen": "1080x2400",
"device_model": "24115RA8EC"
}
}
```
### 出参
响应 `200`:`BindInviteOut`
| 字段 | 类型 | 说明 |
|---|---|---|
| `status` | string | `success` / `already_bound` / `invalid_code` / `self_invite` / `not_eligible` / `fp_not_found` |
| `coins_awarded` | int | 本次给当前用户(被邀请人)发的金币 |
| `message` | string | 给前端直接展示的文案 |
Mock 出参:
```json
{
"status": "success",
"coins_awarded": 10000,
"message": "邀请绑定成功"
}
```
---
## POST /landing-track — 落地页指纹采集
B 浏览器打开 `dl.html?ref=xxx` 时上报指纹(剪贴板归因失败时兜底)。**无需鉴权**(浏览器没 token)。
### 入参
| 字段 | 类型 | 必填 | 说明 |
|---|---|---|---|
| `ref` | string | ✅(4-16 位) | 邀请码(落地页 `?ref=` |
| `screen` | string | ❌ | 屏幕分辨率(如 `1080x2400` |
Mock 入参:
```json
{
"ref": "A3F8K2",
"screen": "1080x2400"
}
```
### 出参
响应 `200`:`LandingTrackOut`
| 字段 | 类型 | 说明 |
|---|---|---|
| `status` | string | `ok` / `invalid_code` / `no_ip` |
Mock 出参:
```json
{"status": "ok"}
```
---
## 说明
- `bind`: 绑定只在注册后首次有效(`not_eligible` = 已过新人期),自邀屏蔽
- `landing-track`: IP/UA 服务端从 HTTP 头自动拿,JS 无需上报
- 指纹反查窗口期由 `INVITE_FP_WINDOW_DAYS` 控制