feat: ALB 타겟 그룹 헬스 체크용 엔드포인트

src/main/java/com/example/team4backend/controller/HealthCheckController.java

@@ -0,0 +1,23 @@
+package com.example.team4backend.controller;
+
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.HashMap;
+import java.util.Map;
+
+@Tag(name = "Health Check", description = "서버 상태 확인 API")
+@RestController
+public class HealthCheckController {
+
+    @Operation(summary = "헬스 체크", description = "ALB 타겟 그룹 헬스 체크용 엔드포인트")
+    @GetMapping("/health")
+    public ResponseEntity<Map<String, String>> healthCheck() {
+        Map<String, String> response = new HashMap<>();
+        response.put("status", "UP");
+        return ResponseEntity.ok(response);
+    }
+}

src/main/java/com/example/team4backend/security/SecurityPaths.java

@@ -11,7 +11,9 @@ private SecurityPaths() {}
             "/auth/refresh",
             "/prompts",
             "/relationships",
-            "/chat-styles"
+            "/chat-styles",
+            "/health",
+            "/"
     };
 
     public static final String[] CSRF_IGNORED = {