Add post change log tracking

backend/src/main/java/com/openisle/controller/PostChangeLogController.java

@@ -0,0 +1,25 @@
+package com.openisle.controller;
+
+import com.openisle.dto.PostChangeLogDto;
+import com.openisle.mapper.PostChangeLogMapper;
+import com.openisle.service.PostChangeLogService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+@RestController
+@RequestMapping("/api/posts")
+@RequiredArgsConstructor
+public class PostChangeLogController {
+    private final PostChangeLogService changeLogService;
+    private final PostChangeLogMapper mapper;
+
+    @GetMapping("/{id}/change-logs")
+    public List<PostChangeLogDto> listLogs(@PathVariable Long id) {
+        return changeLogService.listLogs(id).stream()
+                .map(mapper::toDto)
+                .collect(Collectors.toList());
+    }
+}