feat: 스팟/체크인/한줄평 API 및 로컬(H2) 실행 프로파일

- GET /api/spots, POST /{id}/checkins, GET /{id}/mates, GET·POST /{id}/reviews
- Spot/CheckIn/SpotReview 엔티티·서비스 (체크인 2시간 TTL, 만료 비노출)
- CORS 허용(Vite dev, Capacitor iOS/AOS)
- local 프로파일: Postgres 없이 H2로 기동 + 시드 데이터 (연동 검증용)
- V2 마이그레이션: spots 위경도 컬럼 추가, geom NOT NULL 완화

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

src/main/java/com/dog/dognation/api/SpotController.java

@@ -0,0 +1,67 @@
+package com.dog.dognation.api;
+
+import com.dog.dognation.api.dto.SpotDtos.CheckInRequest;
+import com.dog.dognation.api.dto.SpotDtos.CheckInResponse;
+import com.dog.dognation.api.dto.SpotDtos.MateResponse;
+import com.dog.dognation.api.dto.SpotDtos.ReviewCreateRequest;
+import com.dog.dognation.api.dto.SpotDtos.ReviewResponse;
+import com.dog.dognation.api.dto.SpotDtos.SpotResponse;
+import com.dog.dognation.domain.spot.SpotService;
+import jakarta.validation.Valid;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/api/spots")
+public class SpotController {
+
+    private final SpotService spotService;
+
+    public SpotController(SpotService spotService) {
+        this.spotService = spotService;
+    }
+
+    /** 스팟 목록 */
+    @GetMapping
+    public List<SpotResponse> list() {
+        return spotService.listSpots().stream().map(SpotResponse::from).toList();
+    }
+
+    /** 스팟 체크인 ("나 지금 여기 도착!") */
+    @PostMapping("/{id}/checkins")
+    public ResponseEntity<CheckInResponse> checkIn(@PathVariable Long id,
+                                                   @Valid @RequestBody CheckInRequest req) {
+        CheckInResponse body = CheckInResponse.from(
+                spotService.checkIn(id, req.userId(), req.dogId()));
+        return ResponseEntity.status(HttpStatus.CREATED).body(body);
+    }
+
+    /** 스팟에 현재 체크인 중인 메이트 목록 */
+    @GetMapping("/{id}/mates")
+    public List<MateResponse> mates(@PathVariable Long id) {
+        return spotService.activeMates(id).stream().map(MateResponse::from).toList();
+    }
+
+    /** 스팟 한줄평 목록 */
+    @GetMapping("/{id}/reviews")
+    public List<ReviewResponse> reviews(@PathVariable Long id) {
+        return spotService.reviews(id).stream().map(ReviewResponse::from).toList();
+    }
+
+    /** 스팟 한줄평 작성 */
+    @PostMapping("/{id}/reviews")
+    public ResponseEntity<ReviewResponse> addReview(@PathVariable Long id,
+                                                    @Valid @RequestBody ReviewCreateRequest req) {
+        ReviewResponse body = ReviewResponse.from(
+                spotService.addReview(id, req.userId(), req.tag(), req.content()));
+        return ResponseEntity.status(HttpStatus.CREATED).body(body);
+    }
+}