feat(ui): 统一管理IUP控件名称常量，增强可维护性

refactor(core): 移除未使用的get_app_context函数
refactor(os_env): 修改backup_registry函数以返回错误码并备份到指定目录
refactor(path_manager): 增强路径管理函数的错误处理

src/utils/os_env.c

@@ -5,6 +5,7 @@
 #include <stdlib.h>
 #include <time.h>
 #include <direct.h>
+#include <shlobj.h>
 
 // 检查管理员权限
 int check_admin(void)
@@ -45,46 +46,87 @@ int is_path_valid(const char *path)
 }
 
 // 备份注册表
-void backup_registry(void)
+// 备份到 %APPDATA%/PathEditor/backups/ 目录下
+ErrorCode backup_registry(void)
 {
-    // 创建 records 目录
-    if (_mkdir("records") == -1)
+    // 获取 AppData 路径
+    wchar_t appdata_path[MAX_PATH];
+    if (SHGetFolderPathW(NULL, CSIDL_APPDATA, NULL, 0, appdata_path) != S_OK)
     {
-        // 目录可能已存在，忽略错误
+        return ERR_FAILED;
     }
 
-    // 获取当前时间
+    // 创建备份目录
+    wchar_t backup_dir[MAX_PATH];
+    swprintf(backup_dir, MAX_PATH, L"%s\\PathEditor\\backups", appdata_path);
+    CreateDirectoryW(backup_dir, NULL);
+
+    // 生成时间戳
     time_t t = time(NULL);
     struct tm *tm_info = localtime(&t);
-    char time_str[64];
-    strftime(time_str, sizeof(time_str), "%Y%m%d_%H%M%S", tm_info);
+    wchar_t timestamp[64];
+    wcsftime(timestamp, sizeof(timestamp), L"%Y%m%d_%H%M%S", tm_info);
 
     // 构造备份文件名
-    char filename[256];
-    snprintf(filename, sizeof(filename), "records\\backup_%s.reg", time_str);
+    wchar_t backup_file[MAX_PATH];
+    swprintf(backup_file, MAX_PATH, L"%s\\path_backup_%s.txt", backup_dir, timestamp);
 
-    // 构造 reg export 命令
-    char full_cmd[1024];
-    snprintf(full_cmd, sizeof(full_cmd), "reg.exe export \"HKLM\\SYSTEM\\CurrentControlSet\\Control\\Session Manager\\Environment\" \"%s\" /y", filename);
+    // 打开文件
+    FILE *fp = _wfopen(backup_file, L"w, ccs=UTF-8");
+    if (!fp)
+        return ERR_FAILED;
 
-    // 使用 CreateProcess 隐藏窗口执行
-    STARTUPINFOA si;
-    PROCESS_INFORMATION pi;
-    memset(&si, 0, sizeof(si));
-    si.cb = sizeof(si);
-    si.dwFlags = STARTF_USESHOWWINDOW;
-    si.wShowWindow = SW_HIDE; // 隐藏窗口
-    memset(&pi, 0, sizeof(pi));
+    // 备份系统 PATH
+    HKEY hKey;
+    int success = 0;
 
-    if (CreateProcessA(NULL, full_cmd, NULL, NULL, FALSE, CREATE_NO_WINDOW, NULL, NULL, &si, &pi))
+    if (RegOpenKeyExW(HKEY_LOCAL_MACHINE,
+                      L"SYSTEM\\CurrentControlSet\\Control\\Session Manager\\Environment",
+                      0, KEY_READ, &hKey) == ERROR_SUCCESS)
     {
-        // 等待进程结束
-        WaitForSingleObject(pi.hProcess, INFINITE);
-
-        DWORD exit_code = 0;
-        GetExitCodeProcess(pi.hProcess, &exit_code);
-
-        CloseHandle(pi.hProcess);
-        CloseHandle(pi.hThread);
+        DWORD type, size;
+        if (RegQueryValueExW(hKey, L"Path", NULL, &type, NULL, &size) == ERROR_SUCCESS)
+        {
+            wchar_t *buffer = (wchar_t *)malloc(size + 2);
+            if (buffer)
+            {
+                memset(buffer, 0, size + 2);
+                if (RegQueryValueExW(hKey, L"Path", NULL, &type, (LPBYTE)buffer, &size) == ERROR_SUCCESS)
+                {
+                    fwprintf(fp, L"# System PATH Backup\n");
+                    fwprintf(fp, L"%s\n\n", buffer);
+                    success = 1;
+                }
+                free(buffer);
+            }
+        }
+        RegCloseKey(hKey);
     }
+
+    // 备份用户 PATH
+    if (RegOpenKeyExW(HKEY_CURRENT_USER,
+                      L"Environment",
+                      0, KEY_READ, &hKey) == ERROR_SUCCESS)
+    {
+        DWORD type, size;
+        if (RegQueryValueExW(hKey, L"Path", NULL, &type, NULL, &size) == ERROR_SUCCESS)
+        {
+            wchar_t *buffer = (wchar_t *)malloc(size + 2);
+            if (buffer)
+            {
+                memset(buffer, 0, size + 2);
+                if (RegQueryValueExW(hKey, L"Path", NULL, &type, (LPBYTE)buffer, &size) == ERROR_SUCCESS)
+                {
+                    fwprintf(fp, L"# User PATH Backup\n");
+                    fwprintf(fp, L"%s\n", buffer);
+                    success = 1;
+                }
+                free(buffer);
+            }
+        }
+        RegCloseKey(hKey);
+    }
+
+    fclose(fp);
+    return success ? ERR_OK : ERR_FAILED;
 }