feat: 引入 Lua 配置系统实现 UI 参数热更新

- 添加 Lua 5.5 库支持，包含头文件和动态链接库
- 新增 lua_config 模块，提供配置初始化、获取字符串/整型值等功能
- 创建 config.lua 配置文件，集中管理所有 UI 文本、尺寸和布局参数
- 移除原有的硬编码 config.h，将 UI 常量迁移至 Lua 配置
- 修改主窗口、对话框和回调函数，动态读取 Lua 配置值
- 更新 CMakeLists.txt，添加 Lua 库依赖和 DLL 复制步骤
- 删除过时的 Makefile，统一使用 CMake 构建

src/core/lua_config.c

@@ -0,0 +1,200 @@
+#include "core/lua_config.h"
+#include <lua.h>
+#include <lualib.h>
+#include <lauxlib.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static lua_State* G_L = NULL;
+static int G_loaded = 0;
+static const char* G_config_path = "lua/config.lua";
+
+static const char* get_string_default(const char* section, const char* key)
+{
+    if (strcmp(section, "app") == 0)
+    {
+        if (strcmp(key, "name") == 0) return "PathEditor";
+        if (strcmp(key, "name_readonly") == 0) return "PathEditor (只读模式)";
+    }
+    else if (strcmp(section, "dialog") == 0)
+    {
+        if (strcmp(key, "size") == 0) return "800x800";
+        if (strcmp(key, "minsize") == 0) return "800x800";
+        if (strcmp(key, "select_dir") == 0) return "选择目录";
+    }
+    else if (strcmp(section, "list") == 0)
+    {
+        if (strcmp(key, "item_padding") == 0) return "5x5";
+        if (strcmp(key, "backcolor") == 0) return "255 255 255";
+    }
+    else if (strcmp(section, "button") == 0)
+    {
+        if (strcmp(key, "rastersize") == 0) return "100x32";
+        if (strcmp(key, "new") == 0) return "新建(N)";
+        if (strcmp(key, "edit") == 0) return "编辑(E)";
+        if (strcmp(key, "browse") == 0) return "浏览(B)...";
+        if (strcmp(key, "del") == 0) return "删除(D)";
+        if (strcmp(key, "up") == 0) return "上移(U)";
+        if (strcmp(key, "down") == 0) return "下移(O)";
+        if (strcmp(key, "clean") == 0) return "一键清理";
+        if (strcmp(key, "ok") == 0) return "确定";
+        if (strcmp(key, "cancel") == 0) return "取消";
+        if (strcmp(key, "help") == 0) return "帮助(?)";
+    }
+    else if (strcmp(section, "label") == 0)
+    {
+        if (strcmp(key, "title") == 0) return "环境变量编辑器:";
+        if (strcmp(key, "search_placeholder") == 0) return "输入关键词搜索...";
+        if (strcmp(key, "tab_sys") == 0) return "系统变量 (System)";
+        if (strcmp(key, "tab_user") == 0) return "用户变量 (User)";
+    }
+    else if (strcmp(section, "layout") == 0)
+    {
+        if (strcmp(key, "vbox_gap") == 0) return "5";
+        if (strcmp(key, "vbox_margin") == 0) return "0x0";
+        if (strcmp(key, "vbox_all_margin") == 0) return "10x10";
+        if (strcmp(key, "vbox_all_gap") == 0) return "5";
+        if (strcmp(key, "hbox_gap") == 0) return "10";
+        if (strcmp(key, "hbox_margin") == 0) return "10x10";
+        if (strcmp(key, "hbox_alignment") == 0) return "ACENTER";
+    }
+    else if (strcmp(section, "status") == 0)
+    {
+        if (strcmp(key, "normal") == 0) return "状态: 就绪";
+        if (strcmp(key, "readonly") == 0) return "状态: ⚠️ 只读模式 (无管理员权限)";
+        if (strcmp(key, "saving") == 0) return "状态: 保存中...";
+        if (strcmp(key, "saved") == 0) return "状态: ✓ 保存成功";
+        if (strcmp(key, "error") == 0) return "状态: ✗ 保存失败";
+        if (strcmp(key, "deleted") == 0) return "状态: 已删除选中项";
+        if (strcmp(key, "loaded") == 0) return "状态: 已加载系统和用户变量";
+        if (strcmp(key, "drag_folder_only") == 0) return "提示: 只能拖拽文件夹添加到 PATH";
+    }
+    return "";
+}
+
+int lua_config_init(void)
+{
+    if (G_L != NULL)
+    {
+        return 0;
+    }
+
+    G_L = luaL_newstate();
+    if (G_L == NULL)
+    {
+        return -1;
+    }
+
+    luaL_openlibs(G_L);
+
+    if (luaL_dofile(G_L, G_config_path) != LUA_OK)
+    {
+        const char* err = lua_tostring(G_L, -1);
+        if (err)
+        {
+            fprintf(stderr, "[Lua Config] 加载配置文件失败: %s\n", err);
+        }
+        lua_settop(G_L, 0);
+        G_loaded = 0;
+        return 0;
+    }
+
+    lua_settop(G_L, 0);
+    G_loaded = 1;
+    return 0;
+}
+
+void lua_config_destroy(void)
+{
+    if (G_L != NULL)
+    {
+        lua_close(G_L);
+        G_L = NULL;
+    }
+    G_loaded = 0;
+}
+
+const char* lua_config_get_string(const char* section, const char* key)
+{
+    if (G_L == NULL || section == NULL || key == NULL)
+    {
+        return get_string_default(section, key);
+    }
+
+    lua_getglobal(G_L, "config");
+    if (!lua_istable(G_L, -1))
+    {
+        lua_settop(G_L, 0);
+        return get_string_default(section, key);
+    }
+
+    lua_getfield(G_L, -1, section);
+    if (!lua_istable(G_L, -1))
+    {
+        lua_settop(G_L, 0);
+        return get_string_default(section, key);
+    }
+
+    lua_getfield(G_L, -1, key);
+    if (!lua_isstring(G_L, -1))
+    {
+        lua_settop(G_L, 0);
+        return get_string_default(section, key);
+    }
+
+    const char* value = lua_tostring(G_L, -1);
+    lua_settop(G_L, 0);
+
+    return value ? value : get_string_default(section, key);
+}
+
+int lua_config_get_int(const char* section, const char* key, int default_value)
+{
+    if (G_L == NULL || section == NULL || key == NULL)
+    {
+        return default_value;
+    }
+
+    lua_getglobal(G_L, "config");
+    if (!lua_istable(G_L, -1))
+    {
+        lua_settop(G_L, 0);
+        return default_value;
+    }
+
+    lua_getfield(G_L, -1, section);
+    if (!lua_istable(G_L, -1))
+    {
+        lua_settop(G_L, 0);
+        return default_value;
+    }
+
+    lua_getfield(G_L, -1, key);
+    if (!lua_isnumber(G_L, -1))
+    {
+        lua_settop(G_L, 0);
+        return default_value;
+    }
+
+    int value = (int)lua_tointeger(G_L, -1);
+    lua_settop(G_L, 0);
+
+    return value;
+}
+
+int lua_config_reload(void)
+{
+    if (G_L != NULL)
+    {
+        lua_close(G_L);
+        G_L = NULL;
+    }
+
+    return lua_config_init();
+}
+
+int lua_config_is_loaded(void)
+{
+    return G_loaded;
+}