feat(controller): 添加上传本地技能压缩包V2接口

- 在SkillGenController中新增uploadSkillV4方法，支持上传zip或rar格式技能包
- 新增CmsContent uploadSkillV4接口实现技能包解析和内容生成
- 集成SevenZipJBinding库支持rar格式解压
- 实现压缩包目录树结构解析功能
- 添加YAML内容生成和技能信息提取功能
- 完善异常处理和错误信息返回机制

src/main/java/com/kexue/skills/controller/SkillGenController.java

@@ -128,4 +128,24 @@ public class SkillGenController {
         return CommonResult.success(cmsContent);
     }
 
+    /**
+     * 上传本地技能压缩包V2
+     *
+     * @param file 技能压缩包文件
+     * @return 生成的技能内容
+     */
+    @PostMapping("/uploadSkillV4")
+    @Operation(summary = "上传本地技能压缩包V2", description = "上传本地zip或rar文件并生成技能")
+    public CommonResult<CmsContent> uploadSkillV4(
+            @RequestParam("file") MultipartFile file) {
+        try {
+            byte[] fileBytes = file.getBytes();
+            String fileName = file.getOriginalFilename();
+            CmsContent cmsContent = skillGenService.uploadSkillV4(fileBytes, fileName);
+            return CommonResult.success(cmsContent);
+        } catch (Exception e) {
+            return CommonResult.failed("上传失败：" + e.getMessage());
+        }
+    }
+
 }

src/main/java/com/kexue/skills/entity/dto/SkillPackageInfoDto.java

@@ -0,0 +1,53 @@
+package com.kexue.skills.entity.dto;
+
+import lombok.Data;
+
+import java.io.Serializable;
+import java.util.List;
+
+/**
+ * 技能包信息DTO
+ *
+ * @author AI技能生成助手
+ * @since 2026-04-10
+ */
+@Data
+public class SkillPackageInfoDto implements Serializable {
+
+    private static final long serialVersionUID = 1L;
+
+    /**
+     * 技能名称
+     */
+    private String name;
+
+    /**
+     * 版本号
+     */
+    private String version;
+
+    /**
+     * 技能描述
+     */
+    private String description;
+
+    /**
+     * 作者
+     */
+    private String author;
+
+    /**
+     * 创建日期
+     */
+    private String created;
+
+    /**
+     * 标签列表
+     */
+    private List<String> tags;
+
+    /**
+     * 目录结构
+     */
+    private List<SkillStructureNodeDto> structure;
+}

src/main/java/com/kexue/skills/entity/dto/SkillStructureNodeDto.java

@@ -0,0 +1,53 @@
+package com.kexue.skills.entity.dto;
+
+import lombok.Data;
+
+import java.io.Serializable;
+import java.util.List;
+
+/**
+ * 技能包目录结构节点DTO
+ *
+ * @author AI技能生成助手
+ * @since 2026-04-10
+ */
+@Data
+public class SkillStructureNodeDto implements Serializable {
+
+    private static final long serialVersionUID = 1L;
+
+    /**
+     * 节点名称（文件或目录名）
+     */
+    private String name;
+
+    /**
+     * 节点类型：directory 或 file
+     */
+    private String type;
+
+    /**
+     * 父级路径
+     */
+    private String path;
+
+    /**
+     * 格式：dir、markdown、python
+     */
+    private String format;
+
+    /**
+     * 节点描述
+     */
+    private String description;
+
+    /**
+     * 子节点列表（目录类型使用）
+     */
+    private List<SkillStructureNodeDto> children;
+
+    /**
+     * 文件内容（文件类型使用）
+     */
+    private String content;
+}

src/main/java/com/kexue/skills/service/SkillGenService.java

@@ -69,5 +69,7 @@ public interface SkillGenService {
      */
     CmsContent uploadSkillV2(byte[] fileBytes, String fileName);
 
+    CmsContent uploadSkillV4(byte[] fileBytes, String fileName);
+
     CmsContent uploadSkillV3(String yamlContent);
 }

src/main/java/com/kexue/skills/utils/YamlUtil.java

@@ -0,0 +1,18 @@
+package com.kexue.skills.utils;
+
+import org.yaml.snakeyaml.DumperOptions;
+import org.yaml.snakeyaml.Yaml;
+
+public class YamlUtil {
+
+    /**
+     * 对象转 YAML 字符串
+     */
+    public static String toYaml(Object obj) {
+        DumperOptions options = new DumperOptions();
+        options.setDefaultFlowStyle(DumperOptions.FlowStyle.BLOCK);
+        options.setPrettyFlow(true);
+        Yaml yaml = new Yaml(options);
+        return yaml.dump(obj);
+    }
+}