feat: 체크인 후 AI 궁합 추천 표시

체크인 성공 시 /api/spots/{id}/ai-mates 를 호출해 사이좋게 지낼 만한
강아지를 궁합점수·이유와 함께 표시. 로딩 스피너·빈 상태 처리 포함.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/api/spots.ts

@@ -14,6 +14,14 @@ export interface Mate {
   breed: string | null
 }
 
+export interface AiMate {
+  dogId: number
+  name: string
+  breed: string | null
+  score: number
+  reason: string
+}
+
 export interface Review {
   id: number
   tag: string | null
@@ -31,6 +39,8 @@ export interface CheckInResult {
 export const spotsApi = {
   list: () => http.get<Spot[]>('/api/spots'),
   mates: (spotId: number) => http.get<Mate[]>(`/api/spots/${spotId}/mates`),
+  aiMates: (spotId: number, dogId: number) =>
+    http.get<AiMate[]>(`/api/spots/${spotId}/ai-mates?dogId=${dogId}`),
   reviews: (spotId: number) => http.get<Review[]>(`/api/spots/${spotId}/reviews`),
   checkIn: (spotId: number, userId: number, dogId: number) =>
     http.post<CheckInResult>(`/api/spots/${spotId}/checkins`, { userId, dogId }),