feat(skills): add install from ZIP file feature

- Add open_zip_file_dialog command for selecting ZIP files
- Add install_from_zip service method with recursive skill scanning
- Add install_skills_from_zip Tauri command
- Add frontend API methods and useInstallSkillsFromZip hook
- Add "Install from ZIP" button in Skills management page
- Support local skill ID format: local:{directory}
- Add i18n translations for new feature and error messages

src-tauri/src/commands/skill.rs

@@ -249,3 +249,16 @@ pub fn remove_skill_repo(
         .map_err(|e| e.to_string())?;
     Ok(true)
 }
+
+/// 从 ZIP 文件安装 Skills
+#[tauri::command]
+pub fn install_skills_from_zip(
+    file_path: String,
+    current_app: String,
+    app_state: State<'_, AppState>,
+) -> Result<Vec<InstalledSkill>, String> {
+    let app_type = parse_app_type(&current_app)?;
+    let path = std::path::Path::new(&file_path);
+
+    SkillService::install_from_zip(&app_state.db, path, &app_type).map_err(|e| e.to_string())
+}