feat: 支持 Skill 仓库扫描与批量导入

- 统一支持本地单包、多包和 Git 候选最多 50 项导入

- 固定提交并限制 SSRF、DNS、并发、频率、超时和仓库资源

- 增加导入对话框、接口契约和安全回归测试

easyflow-modules/easyflow-module-skill/pom.xml

@@ -61,6 +61,16 @@
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-compress</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.eclipse.jgit</groupId>
+            <artifactId>org.eclipse.jgit</artifactId>
+            <version>7.7.0.202606012155-r</version>
+        </dependency>
+        <dependency>
+            <groupId>org.eclipse.jgit</groupId>
+            <artifactId>org.eclipse.jgit.http.apache</artifactId>
+            <version>7.7.0.202606012155-r</version>
+        </dependency>
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>