feat(nix): update apps, tools, and system packages

- Added `blackhole-2ch` to casks and `darktable` to system packages.
- Disabled `wezterm` and kept `direnv` and `alacritty` enabled in tools.
- Improves utility and functionality by refining the configuration.

systems/aarch64-darwin/m4/default.nix

@@ -14,6 +14,7 @@ with lib.metacfg;
       "libusb"
       "mas"
     ];
+    casks = [ "blackhole-2ch" ];
     masApps = { };
     onActivation = {
       cleanup = "zap";
@@ -30,7 +31,7 @@ with lib.metacfg;
     tools = {
       direnv.enable = true;
       alacritty.enable = true;
-      wezterm.enable = true;
+      wezterm.enable = false;
     };
     build.enable = true;
   };
@@ -45,6 +46,7 @@ with lib.metacfg;
     nodejs
     qemu
     virt-manager
+    darktable
   ];
 
   users.users.harald.shell = pkgs.fish;