fix(admin): 修复文章发布500错误，补充detail接口及relatedDimensions类型转换

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

cfc-backend/src/main/java/com/etotem/cfc/controller/admin/AdminArticleController.java

@@ -11,6 +11,7 @@ import org.springframework.web.multipart.MultipartFile;
 import javax.annotation.Resource;
 import java.io.File;
 import java.io.IOException;
+import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.UUID;
@@ -36,10 +37,38 @@ public class AdminArticleController {
     }
 
     @PostMapping("/create")
-    public Result<String> create(@RequestBody Article article,
+    public Result<Map<String, Object>> create(@RequestBody Map<String, Object> body,
                                   @RequestAttribute("userId") Long adminId) {
+        Article article = new Article();
+        article.setTitle((String) body.get("title"));
+        article.setContent((String) body.get("content"));
+        if (body.get("categoryId") != null) {
+            article.setCategoryId(Long.valueOf(body.get("categoryId").toString()));
+        }
+        article.setSummary((String) body.get("summary"));
+        article.setCoverImage((String) body.get("coverImage"));
+        article.setTags((String) body.get("tags"));
+        article.setAuthor((String) body.get("author"));
+        if (body.get("readTime") != null) {
+            article.setReadTime(Integer.valueOf(body.get("readTime").toString()));
+        }
+        // relatedDimensions may come as array from frontend
+        Object rd = body.get("relatedDimensions");
+        if (rd instanceof List) {
+            article.setRelatedDimensions(String.join(",", (List<String>) rd));
+        } else if (rd instanceof String) {
+            article.setRelatedDimensions((String) rd);
+        }
+        article.setVisibility((String) body.get("visibility"));
+        article.setVisibleTo((String) body.get("visibleTo"));
+        article.setArticleType((String) body.get("articleType"));
+        if (body.get("status") != null) {
+            article.setStatus((String) body.get("status"));
+        }
         articleService.create(article, adminId);
-        return Result.success("创建成功");
+        Map<String, Object> result = new HashMap<>();
+        result.put("id", article.getId());
+        return Result.success(result);
     }
 
     @PostMapping("/update")
@@ -48,6 +77,19 @@ public class AdminArticleController {
         return Result.success("更新成功");
     }
 
+    @PostMapping("/detail")
+    public Result<Article> detail(@RequestBody Map<String, Object> body) {
+        if (body.get("id") == null) {
+            return Result.error("缺少文章ID");
+        }
+        Long id = Long.valueOf(body.get("id").toString());
+        Article article = articleService.getById(id);
+        if (article == null) {
+            return Result.error("文章不存在");
+        }
+        return Result.success(article);
+    }
+
     @PostMapping("/delete")
     public Result<String> delete(@RequestBody Map<String, Object> body) {
         Long id = Long.valueOf(body.get("id").toString());
@@ -57,6 +99,9 @@ public class AdminArticleController {
 
     @PostMapping("/publish")
     public Result<String> publish(@RequestBody Map<String, Object> body) {
+        if (body.get("id") == null) {
+            return Result.error("缺少文章ID");
+        }
         Long id = Long.valueOf(body.get("id").toString());
         String status = (String) body.get("status");
         articleService.toggleStatus(id, status);

cfc-backend/src/main/java/com/etotem/cfc/service/ArticleService.java

@@ -272,6 +272,10 @@ public class ArticleService {
         return result;
     }
 
+    public Article getById(Long id) {
+        return articleMapper.selectById(id);
+    }
+
     public void enrichWithCategoryName(List<Article> articles) {
         if (articles == null || articles.isEmpty()) return;
     }