feat: 实现撤销/重做功能和CSV导出支持

- 添加撤销/重做管理器，支持添加、删除、编辑、移动等操作的撤销/重做
- 在应用上下文中集成撤销/重做管理器，最大支持50条历史记录
- 为所有基本操作（新建、编辑、删除、上移、下移、清理）添加撤销记录
- 扩展导出功能，支持CSV格式导出（除原有JSON格式外）
- 添加路径格式验证函数，确保导入数据的有效性
- 更新UI文件对话框过滤器以包含CSV格式选项

src/controller/callbacks_basic.c

@@ -2,6 +2,7 @@
 #include "controller/callbacks_internal.h"
 #include "core/path_manager.h"
 #include "core/lua_config.h"
+#include "core/undo_redo.h"
 #include "utils/string_ext.h"
 #include "utils/safe_string.h"
 #include "utils/error_code.h"
@@ -13,6 +14,37 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+// 辅助函数：检查当前目标是系统还是用户
+static TargetType get_current_target(Ihandle *dlg)
+{
+    Ihandle *tabs = IupGetDialogChild(dlg, CTRL_TABS_MAIN);
+    if (tabs)
+    {
+        int tab = IupGetInt(tabs, "VALUE");
+        return (tab == 1) ? TARGET_SYSTEM : TARGET_USER;
+    }
+    return TARGET_USER;
+}
+
+// 辅助函数：创建并推送撤销记录
+static void push_record(Ihandle *dlg, OperationType op_type, int index, int count,
+                        char **old_paths, char **new_paths)
+{
+    AppContext *ctx = get_app_context_from_dlg(dlg);
+    if (!ctx || !ctx->undo_redo_mgr)
+        return;
+
+    OpRecord record;
+    record.type = op_type;
+    record.target = get_current_target(dlg);
+    record.index = index;
+    record.count = count;
+    record.old_paths = old_paths;
+    record.new_paths = new_paths;
+
+    push_undo_record(ctx->undo_redo_mgr, &record);
+}
+
 // 按钮回调：新建
 int btn_new_cb(Ihandle *self)
 {
@@ -31,6 +63,12 @@ int btn_new_cb(Ihandle *self)
                 return IUP_DEFAULT;
             }
 
+            // 记录撤销信息（添加前的状态）
+            char *path_copy = _strdup(buffer);
+            char *paths[1] = {path_copy};
+            push_record(dlg, OP_ADD, raw_data->count, 1, paths, NULL);
+            free(path_copy);
+
             add_string_list(raw_data, buffer);
 
             Ihandle *current_list = get_current_list(dlg);
@@ -63,6 +101,15 @@ int btn_edit_cb(Ihandle *self)
     {
         if (strlen(buffer) > 0)
         {
+            // 记录撤销信息（编辑前的值）
+            char *old_path = _strdup(string_list_get(raw_data, selected - 1));
+            char *new_path = _strdup(buffer);
+            char *old_paths[1] = {old_path};
+            char *new_paths[1] = {new_path};
+            push_record(dlg, OP_EDIT, selected - 1, 1, old_paths, new_paths);
+            free(old_path);
+            free(new_path);
+
             string_list_set(raw_data, selected - 1, buffer);
 
             sync_string_list_to_ui(current_list, raw_data);
@@ -108,6 +155,12 @@ int btn_browse_cb(Ihandle *self)
                 return IUP_DEFAULT;
             }
 
+            // 记录撤销信息（添加前的状态）
+            char *path_copy = _strdup(value);
+            char *paths[1] = {path_copy};
+            push_record(dlg, OP_ADD, raw_data->count, 1, paths, NULL);
+            free(path_copy);
+
             add_string_list(raw_data, value);
 
             Ihandle *current_list = get_current_list(dlg);
@@ -135,10 +188,18 @@ int btn_del_cb(Ihandle *self)
     }
 
     StringList *raw_data = get_current_raw_data(dlg);
-    ErrorCode result = path_manager_remove_at(raw_data, selected - 1);
+    int del_index = selected - 1;
+
+    // 记录撤销信息（被删除的路径）
+    char *del_path = _strdup(string_list_get(raw_data, del_index));
+    char *paths[1] = {del_path};
+    push_record(dlg, OP_DELETE, del_index, 1, paths, NULL);
+    free(del_path);
+
+    ErrorCode result = path_manager_remove_at(raw_data, del_index);
     if (result != ERR_OK)
     {
-        log_error("Failed to remove path at index %d", selected - 1);
+        log_error("Failed to remove path at index %d", del_index);
     }
 
     sync_string_list_to_ui(current_list, raw_data);