refactor: 重构为三设备架构，zsh 迁移至 fish

- 新增 darwinConfigurations: mac-mini, macbook-air (aarch64-darwin)
- WSL 统一用户名为 imbytecat，主机名改为 awesome-* 系列
- zsh 全面迁移至 fish (abbrs, 内置补全/高亮, zoxide --cmd cd)
- 激活 nix-darwin 模块: Homebrew, 系统偏好, Touch ID sudo
- 移除 bare/standalone 配置及 catppuccin nixosModule from mkDarwin

hosts/bare/default.nix

@@ -1,18 +0,0 @@
-{ username, ... }:
-
-{
-  # ── Boot ─────────────────────────────────────────────
-  boot.loader.systemd-boot.enable = true;
-  boot.loader.efi.canTouchEfiVariables = true;
-
-  # ── Network ──────────────────────────────────────────
-  networking.networkmanager.enable = true;
-  users.users.${username}.extraGroups = [ "networkmanager" ];
-
-  # ── Hardware ─────────────────────────────────────────
-  # After first install, generate and uncomment:
-  #   sudo nixos-generate-config --show-hardware-config > hosts/bare/hardware-configuration.nix
-  # imports = [ ./hardware-configuration.nix ];
-
-  system.stateVersion = "24.11";
-}

hosts/mac-mini/default.nix

@@ -0,0 +1,11 @@
+{ ... }:
+
+{
+  # ── Mac Mini specific ─────────────────────────────────
+  # Always plugged in — desktop workstation role
+
+  # Touch ID for sudo
+  security.pam.services.sudo_local.touchIdAuth = true;
+
+  system.stateVersion = 5;
+}

hosts/macbook-air/default.nix

@@ -0,0 +1,11 @@
+{ ... }:
+
+{
+  # ── MacBook Air specific ──────────────────────────────
+  # Portable — battery-conscious settings
+
+  # Touch ID for sudo
+  security.pam.services.sudo_local.touchIdAuth = true;
+
+  system.stateVersion = 5;
+}

hosts/macbook/default.nix

@@ -1,11 +0,0 @@
-{ username, ... }:
-
-{
-  # ── macOS host-specific configuration ────────────────
-  # Uncomment and configure when macOS machine is available.
-
-  # Touch ID for sudo
-  # security.pam.services.sudo_local.touchIdAuth = true;
-
-  # system.stateVersion = 5;
-}