refactor: reorganize config order, clean up comments, restore xdg.configFile for nix-shell unfree support

configuration.nix

@@ -1,17 +1,12 @@
-# Edit this configuration file to define what should be installed on
-# your system.  Help is available in the configuration.nix(5) man page
-# and in the NixOS manual (accessible by running ‘nixos-help’).
-
 { config, pkgs, ... }:
 
 {
-  imports =
+  imports = [
-    [ # Include the results of the hardware scan.
     ./hardware-configuration.nix
     ./programs/clash.nix
   ];
 
-
+  # ── Nix 自身设置 ────────────────────────────────────────────
   nix.settings.experimental-features = [ "nix-command" "flakes" ];
   nix.settings.auto-optimise-store = true;
   nix.gc = {
@@ -19,63 +14,23 @@
     dates = "weekly";
     options = "--delete-older-than 7d";
   };
-  # Bootloader.
+  nixpkgs.config.allowUnfree = true;
+
+  # ── 引导 ────────────────────────────────────────────────────
   boot.loader.systemd-boot.enable = true;
   boot.loader.efi.canTouchEfiVariables = true;
 
-  networking.hostName = "nixos"; # Define your hostname.
+  # ── 网络 ────────────────────────────────────────────────────
-  programs.nix-ld.enable = true;
+  networking.hostName = "nixos";
-
-  services.flatpak.enable = true;
-  # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
-
-  # Configure network proxy if necessary
-  # networking.proxy.default = "http://user:password@proxy:port/";
-  # networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";
-
-
-  fonts.enableDefaultPackages = true;
-  fonts.packages = with pkgs; [
-    noto-fonts
-    noto-fonts-cjk-sans
-    noto-fonts-cjk-serif
-    sarasa-gothic  # 更纱黑体，包含优秀的中英文等宽字体，极其适合终端和编程
-    wqy_microhei
-    wqy_zenhei
-  ];
-
-  fonts.fontconfig = {
-    enable = true;
-
-    # 设置全局默认字体，防止系统回退到显示效果不佳的字体
-    defaultFonts = {
-      serif = [ "Noto Serif CJK SC" "Noto Serif" ];
-      sansSerif = [ "Noto Sans CJK SC" "Noto Sans" ];
-      monospace = [ "Sarasa Term SC" "Noto Sans Mono CJK SC" ];
-    };
-
-    # 解决锯齿问题的核心：开启抗锯齿、微调和次像素渲染
-    antialias = true;
-    hinting = {
-      enable = true;
-      style = "slight"; # 若在高分屏 (HiDPI) 下，"slight" 通常表现最好
-    };
-    subpixel = {
-      rgba = "rgb";     # 针对 LCD 屏幕的次像素排列优化
-      lcdfilter = "default";
-    };
-  };
-
-
-  # Enable networking
   networking.networkmanager.enable = true;
+  services.tailscale.enable = true;
+  # networking.firewall.allowedTCPPorts = [ ... ];
+  # networking.firewall.allowedUDPPorts = [ ... ];
 
-  # Set your time zone.
+  # ── 时区与本地化 ────────────────────────────────────────────
   time.timeZone = "Asia/Shanghai";
 
-  # Select internationalisation properties.
   i18n.defaultLocale = "zh_CN.UTF-8";
-
   i18n.extraLocaleSettings = {
     LC_ADDRESS = "zh_CN.UTF-8";
     LC_IDENTIFICATION = "zh_CN.UTF-8";
@@ -93,7 +48,7 @@
     type = "fcitx5";
     fcitx5.waylandFrontend = true;
     fcitx5.addons = with pkgs; [
-      # 使用 Fcitx5 拼音（由 fcitx5-chinese-addons 提供），并补齐 KDE/Qt 集成组件。
+      # 拼音输入 + KDE/Qt 集成
       qt6Packages.fcitx5-chinese-addons
       fcitx5-gtk
       kdePackages.fcitx5-qt
@@ -101,24 +56,37 @@
     ];
   };
 
-  # Enable the X11 windowing system.
+  # ── 桌面环境 (KDE Plasma 6 / Wayland) ───────────────────────
-  # You can disable this if you're only using the Wayland session.
   services.xserver.enable = true;
-
-  # Enable the KDE Plasma Desktop Environment.
   services.displayManager.sddm.enable = true;
   services.desktopManager.plasma6.enable = true;
+  services.xserver.xkb.layout = "us";
 
-  # Configure keymap in X11
+  # 字体
-  services.xserver.xkb = {
+  fonts.enableDefaultPackages = true;
-    layout = "us";
+  fonts.packages = with pkgs; [
-    variant = "";
+    noto-fonts
+    noto-fonts-cjk-sans
+    noto-fonts-cjk-serif
+    sarasa-gothic  # 更纱黑体，极其适合终端和编程
+    wqy_microhei
+    wqy_zenhei
+  ];
+  fonts.fontconfig = {
+    enable = true;
+    defaultFonts = {
+      serif = [ "Noto Serif CJK SC" "Noto Serif" ];
+      sansSerif = [ "Noto Sans CJK SC" "Noto Sans" ];
+      monospace = [ "Sarasa Term SC" "Noto Sans Mono CJK SC" ];
+    };
+    antialias = true;
+    hinting.enable = true;
+    hinting.style = "slight";
+    subpixel.rgba = "rgb";
+    subpixel.lcdfilter = "default";
   };
 
-  # Enable CUPS to print documents.
+  # 音频 (PipeWire)
-  services.printing.enable = true;
-
-  # Enable sound with pipewire.
   services.pulseaudio.enable = false;
   security.rtkit.enable = true;
   services.pipewire = {
@@ -126,18 +94,12 @@
     alsa.enable = true;
     alsa.support32Bit = true;
     pulse.enable = true;
-    # If you want to use JACK applications, uncomment this
-    #jack.enable = true;
-
-    # use the example session manager (no others are packaged yet so this is enabled by default,
-    # no need to redefine it in your config for now)
-    #media-session.enable = true;
   };
 
-  # Enable touchpad support (enabled default in most desktopManager).
+  services.printing.enable = true;
-  # services.xserver.libinput.enable = true;
+  services.flatpak.enable = true;
 
-  # Define a user account. Don't forget to set a password with ‘passwd’.
+  # ── 用户 ────────────────────────────────────────────────────
   users.users.test = {
     isNormalUser = true;
     description = "test";
@@ -145,50 +107,20 @@
     packages = with pkgs; [
       kdePackages.kate
       nodejs
-    #  thunderbird
+      bubblewrap
     ];
   };
 
-  # Install firefox.
+  # ── 程序与服务 ──────────────────────────────────────────────
   programs.firefox.enable = true;
   programs.steam.enable = true;
+  programs.nix-ld.enable = true;
   virtualisation.docker.enable = true;
-  services.tailscale.enable = true;
   services.gnome.gnome-keyring.enable = true;
-  # Allow unfree packages
-  nixpkgs.config.allowUnfree = true;
-  # List packages installed in system profile. To search, run:
-  # $ nix search wget
-  environment.systemPackages = with pkgs; [
-  #  vim # Do not forget to add an editor to edit configuration.nix! The Nano editor is also installed by default.
-  #  wget
-  ];
 
-  # Some programs need SUID wrappers, can be configured further or are
+  # ── 系统级软件包 ────────────────────────────────────────────
-  # started in user sessions.
+  environment.systemPackages = with pkgs; [ ];
-  # programs.mtr.enable = true;
-  # programs.gnupg.agent = {
-  #   enable = true;
-  #   enableSSHSupport = true;
-  # };
-
-  # List services that you want to enable:
-
-  # Enable the OpenSSH daemon.
-  # services.openssh.enable = true;
-
-  # Open ports in the firewall.
-  # networking.firewall.allowedTCPPorts = [ ... ];
-  # networking.firewall.allowedUDPPorts = [ ... ];
-  # Or disable the firewall altogether.
-  # networking.firewall.enable = false;
-
-  # This value determines the NixOS release from which the default
-  # settings for stateful data, like file locations and database versions
-  # on your system were taken. It‘s perfectly fine and recommended to leave
-  # this value at the release version of the first install of this system.
-  # Before changing this value read the documentation for this option
-  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
-  system.stateVersion = "25.11"; # Did you read the comment?
 
+  # ── 系统状态版本（请勿修改） ────────────────────────────────
+  system.stateVersion = "25.11";
 }

home.nix

@@ -20,9 +20,6 @@
     gpu-screen-recorder-gtk
   ];
 
-  # 让 nix-shell 等传统命令也能安装 unfree 软件
-  xdg.configFile."nixpkgs/config.nix".text = "{ allowUnfree = true; }";
-
   # 用 Home Manager 固定 Fcitx5 输入法配置，仅保留拼音
   home.file.".config/fcitx5/profile".text = ''
     [Groups/0]
@@ -46,6 +43,9 @@
     "$HOME/.npm-global/bin"
   ];
 
+  # 让 nix-shell 等传统命令也能安装 unfree 软件
+  xdg.configFile."nixpkgs/config.nix".text = "{ allowUnfree = true; }";
+
   programs.bash = {
     enable = true;
     initExtra = ''