autoCoupon: alliance 연맹원 목록 연동 추가

- /api/alliances: alliance 백엔드 프록시
- /api/alliance-members: R5 PIN 인증 후 연맹원 목록 반환 (쿠폰 등록 여부 포함)
- AlliancePanel.vue: 연맹 선택 + R5 PIN 인증 + 역할별 필터 + 쿠폰 등록 현황
- HomeView.vue에 AlliancePanel 추가

back/src/wos/wos.controller.ts

@@ -1,5 +1,8 @@
-import { Controller, Post, Get, Delete, Patch, Body, Param, Query, HttpCode } from '@nestjs/common';
+import { Controller, Post, Get, Delete, Patch, Body, Param, Query, HttpCode, BadRequestException, ForbiddenException } from '@nestjs/common';
 import { WosService } from './wos.service';
+import axios from 'axios';
+
+const ALLIANCE_API = 'http://localhost:3005/api';
 
 @Controller('api')
 export class WosController {
@@ -59,4 +62,25 @@ export class WosController {
   async deleteCoupon(@Param('id') id: string) {
     return this.wosService.deleteCoupon(Number(id));
   }
+
+  @Get('alliances')
+  async getAlliances() {
+    const { data } = await axios.get(`${ALLIANCE_API}/alliances`);
+    return data;
+  }
+
+  @Post('alliance-members')
+  @HttpCode(200)
+  async getAllianceMembers(@Body() body: { alliance_id: number; pin: string }) {
+    if (!body.alliance_id || !body.pin) throw new BadRequestException('alliance_id와 pin이 필요합니다');
+    try {
+      await axios.get(`${ALLIANCE_API}/alliances/${body.alliance_id}/pending`, { params: { pin: body.pin } });
+    } catch {
+      throw new ForbiddenException('PIN이 틀렸습니다');
+    }
+    const { data: members } = await axios.get(`${ALLIANCE_API}/members`, { params: { alliance_id: body.alliance_id } });
+    const wosUsers = await this.wosService.listUsers();
+    const nicknameSet = new Set(wosUsers.map((u: any) => u.nickname?.toLowerCase()));
+    return members.map((m: any) => ({ ...m, in_coupon_system: nicknameSet.has(m.nickname?.toLowerCase()) }));
+  }
 }