refactor: 提取 core 库 + 新增 CLI 版本

- 创建 Cargo workspace（core / src-tauri / cli 三 crate）
- core: 纯 Rust 库，零 Tauri 依赖，包含所有业务逻辑
- src-tauri/commands: 改为薄包装，调用 core 函数
- cli: 基于 clap 的命令行工具，支持 JSON 输出
- CLI 命令: list, add, remove, conflicts, scan, profile, check-admin

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src-tauri/src/commands/registry.rs

@@ -1,127 +1,10 @@
-use winreg::enums::*;
-use winreg::RegKey;
-
-pub(crate) const SYS_REG_PATH: &str = "SYSTEM\\CurrentControlSet\\Control\\Session Manager\\Environment";
-pub(crate) const USER_REG_PATH: &str = "Environment";
-pub(crate) const PATH_VALUE: &str = "Path";
-
-pub(crate) fn load_paths(root: winreg::HKEY, sub_path: &str, label: &str) -> Result<Vec<String>, String> {
-    let key = RegKey::predef(root);
-    let env_key = key
-        .open_subkey_with_flags(sub_path, KEY_READ)
-        .map_err(|e| format!("无法打开{}注册表项: {}", label, e))?;
-
-    let value: String = env_key
-        .get_value(PATH_VALUE)
-        .map_err(|e| format!("无法读取{} PATH: {}", label, e))?;
-
-    Ok(split_path(&value))
-}
-
-pub(crate) fn save_paths(root: winreg::HKEY, sub_path: &str, label: &str, paths: &[String]) -> Result<(), String> {
-    let value = join_path(paths);
-
-    // Windows 注册表 REG_EXPAND_SZ 上限 32767 字符
-    const MAX_PATH_LEN: usize = 32767;
-    if value.len() > MAX_PATH_LEN {
-        return Err(format!(
-            "{} PATH 总长度 {} 超出 Windows 限制 {} 字符，请移除部分路径后再保存",
-            label, value.len(), MAX_PATH_LEN
-        ));
-    }
-
-    let key = RegKey::predef(root);
-    let env_key = key
-        .open_subkey_with_flags(sub_path, KEY_WRITE)
-        .map_err(|e| format!("无法写入{}注册表（需要管理员权限）: {}", label, e))?;
-
-    env_key
-        .set_value(PATH_VALUE, &value)
-        .map_err(|e| format!("无法写入{} PATH: {}", label, e))?;
-
-    log::info!("已保存{} PATH，{} 个条目", label, paths.len());
-    Ok(())
-}
+use path_editor_core::registry;
 
 #[tauri::command]
-pub fn load_system_paths() -> Result<Vec<String>, String> {
-    load_paths(HKEY_LOCAL_MACHINE, SYS_REG_PATH, "系统")
-}
-
+pub fn load_system_paths() -> Result<Vec<String>, String> { registry::load_system_paths() }
 #[tauri::command]
-pub fn load_user_paths() -> Result<Vec<String>, String> {
-    load_paths(HKEY_CURRENT_USER, USER_REG_PATH, "用户")
-}
-
+pub fn load_user_paths() -> Result<Vec<String>, String> { registry::load_user_paths() }
 #[tauri::command]
-pub fn save_system_paths(paths: Vec<String>) -> Result<(), String> {
-    save_paths(HKEY_LOCAL_MACHINE, SYS_REG_PATH, "系统", &paths)
-}
-
+pub fn save_system_paths(paths: Vec<String>) -> Result<(), String> { registry::save_system_paths(paths) }
 #[tauri::command]
-pub fn save_user_paths(paths: Vec<String>) -> Result<(), String> {
-    save_paths(HKEY_CURRENT_USER, USER_REG_PATH, "用户", &paths)
-}
-
-/// 将分号分隔的 PATH 字符串拆分为数组。
-/// 注意：TS 端 src/core/validation.ts 有相同逻辑的 split_path，修改时需同步两端。
-pub(crate) fn split_path(raw: &str) -> Vec<String> {
-    raw.split(';')
-        .map(|s| s.trim().to_string())
-        .filter(|s| !s.is_empty())
-        .collect()
-}
-
-pub(crate) fn join_path(paths: &[String]) -> String {
-    paths
-        .iter()
-        .map(|p| p.trim())
-        .filter(|p| !p.is_empty())
-        .collect::<Vec<_>>()
-        .join(";")
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn split_empty() {
-        assert_eq!(split_path(""), Vec::<String>::new());
-    }
-
-    #[test]
-    fn split_single() {
-        assert_eq!(split_path("C:\\Windows"), vec!["C:\\Windows"]);
-    }
-
-    #[test]
-    fn split_multiple() {
-        assert_eq!(
-            split_path("C:\\Windows;D:\\Projects"),
-            vec!["C:\\Windows", "D:\\Projects"]
-        );
-    }
-
-    #[test]
-    fn split_trims_and_filters_empty() {
-        assert_eq!(
-            split_path(" C:\\ ; ; D:\\ "),
-            vec!["C:\\", "D:\\"]
-        );
-    }
-
-    #[test]
-    fn join_and_split_roundtrip() {
-        let paths = vec!["C:\\Windows".to_string(), "D:\\Projects".to_string()];
-        let joined = join_path(&paths);
-        let split = split_path(&joined);
-        assert_eq!(split, paths);
-    }
-
-    #[test]
-    fn join_trims_entries() {
-        let paths = vec![" C:\\Windows ".to_string(), " D:\\ ".to_string()];
-        assert_eq!(join_path(&paths), "C:\\Windows;D:\\");
-    }
-}
+pub fn save_user_paths(paths: Vec<String>) -> Result<(), String> { registry::save_user_paths(paths) }