hijiri: finish migration

hosts/hijiri/yabai.nix

@@ -0,0 +1,30 @@
+{
+  lib,
+  pkgs,
+  ...
+}: {
+  services.yabai = {
+    enable = true;
+    enableScriptingAddition = true;
+    config = {
+      layout = "bsp";
+      top_padding = 10;
+      bottom_padding = 10;
+      left_padding = 10;
+      right_padding = 10;
+      window_gap = 10;
+      mouse_modifier = "cmd";
+      window_topmost = "off";
+      window_shadow = "float";
+      mouse_follows_focus = "on";
+    };
+    extraConfig = ''
+      yabai -m rule --add app="^Alacritty$" border=on
+      yabai -m rule --add app="^System Settings$" manage=off
+
+      yabai -m signal --add event=window_created action='yabai -m query --windows --window $YABAI_WINDOW_ID \
+        | ${lib.getExe pkgs.jq} -er ".\"can-resize\" or .\"is-floating\"" \
+        || yabai -m window $YABAI_WINDOW_ID --toggle float'
+    '';
+  };
+}