feat(yazi): enable yazi as system-wide file chooser

Configure xdg-desktop-portal-termfilechooser to use yazi (via ghostty) for file selection dialogs in portal-aware apps like Firefox. Includes a wrapper script and Hyprland window rules.

apps/hyprland/hypr/rules.nix

@@ -4,6 +4,9 @@
     ];
 
     windowrulev2 = [
+      "float, class:^(yazi-file-picker)$"
+      "size 60% 60%, class:^(yazi-file-picker)$"
+      "center, class:^(yazi-file-picker)$"
     ];
   };
 }

apps/yazi/default.nix

@@ -1,4 +1,15 @@
-{pkgs, ...}: {
+{
+  pkgs,
+  myConfig,
+  ...
+}: let
+  yazi-file-picker = pkgs.writeShellScriptBin "yazi-file-picker" ''
+    path="$1"
+    # multiple="$2"
+    # directory="$3"
+    ${pkgs.yazi}/bin/yazi --chooser-file="$path"
+  '';
+in {
   programs.yazi = {
     enable = true;
     enableFishIntegration = true;
@@ -11,4 +22,11 @@
       };
     };
   };
+
+  home.packages = [yazi-file-picker];
+
+  xdg.configFile."xdg-desktop-portal-termfilechooser/config".text = ''
+    [filechooser]
+    cmd=${pkgs.ghostty}/bin/ghostty --class=yazi-file-picker -e ${yazi-file-picker}/bin/yazi-file-picker
+  '';
 }

modules/nixos/hyprland.nix

@@ -24,4 +24,18 @@
       default = ["${myConfig.terminal.default}"];
     };
   };
+
+  xdg.portal = {
+    enable = true;
+    extraPortals = [
+      pkgs.xdg-desktop-portal-termfilechooser
+      pkgs.xdg-desktop-portal-gtk
+    ];
+    config = {
+      common = {
+        default = ["gtk"];
+        "org.freedesktop.impl.portal.FileChooser" = ["termfilechooser"];
+      };
+    };
+  };
 }