feat: add affiliate invite rebate flow and admin rebate-rate setting

frontend/src/api/admin/settings.ts

@@ -308,6 +308,7 @@ export interface SystemSettings {
   totp_encryption_key_configured: boolean; // TOTP 加密密钥是否已配置
   // Default settings
   default_balance: number;
+  affiliate_rebate_rate: number;
   default_concurrency: number;
   default_user_rpm_limit: number;
   default_subscriptions: DefaultSubscriptionSetting[];
@@ -489,6 +490,7 @@ export interface UpdateSettingsRequest {
   invitation_code_enabled?: boolean;
   totp_enabled?: boolean; // TOTP 双因素认证
   default_balance?: number;
+  affiliate_rebate_rate?: number;
   default_concurrency?: number;
   default_user_rpm_limit?: number;
   default_subscriptions?: DefaultSubscriptionSetting[];

frontend/src/api/user.ts

@@ -9,7 +9,14 @@ import {
   prepareOAuthBindAccessTokenCookie,
   type WeChatOAuthPublicSettings,
 } from './auth'
-import type { User, ChangePasswordRequest, NotifyEmailEntry, UserAuthProvider } from '@/types'
+import type {
+  User,
+  ChangePasswordRequest,
+  NotifyEmailEntry,
+  UserAuthProvider,
+  UserAffiliateDetail,
+  AffiliateTransferResponse
+} from '@/types'
 
 /**
  * Get current user profile
@@ -168,6 +175,16 @@ export async function startOAuthBinding(
   window.location.href = startURL
 }
 
+export async function getAffiliateDetail(): Promise<UserAffiliateDetail> {
+  const { data } = await apiClient.get<UserAffiliateDetail>('/user/aff')
+  return data
+}
+
+export async function transferAffiliateQuota(): Promise<AffiliateTransferResponse> {
+  const { data } = await apiClient.post<AffiliateTransferResponse>('/user/aff/transfer')
+  return data
+}
+
 export const userAPI = {
   getProfile,
   updateProfile,
@@ -180,7 +197,9 @@ export const userAPI = {
   bindEmailIdentity,
   unbindAuthIdentity,
   buildOAuthBindingStartURL,
-  startOAuthBinding
+  startOAuthBinding,
+  getAffiliateDetail,
+  transferAffiliateQuota
 }
 
 export default userAPI