treewide: fix flake and xdg-portal warnings

- Remove invalid `inputs` flake output
- Convert `overlays` from list to attrset
- Add xdg.portal.config for portal 1.17 compatibility

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: aster-void

flake.nix

@@ -56,7 +56,7 @@
       shared = import ./shared;
     };
   in {
-    inherit inputs overlays;
+    overlays.default = myOverlay;
     packages.${system} = import ./my/pkgs/default.nix {inherit inputs pkgs;};
     nixosModules = import ./my/nixosModules;
 

home-manager/global/hyprland/default.nix

@@ -38,6 +38,8 @@ in {
   };
 
   config = {
+    xdg.portal.config.common.default = "*";
+
     wayland.windowManager.hyprland = {
       enable = true;
       package = null; # Use NixOS module's package

nixos/profiles/desktop/gui.nix

@@ -38,6 +38,7 @@ in {
   xdg.portal = lib.mkIf cfg.enable {
     enable = true;
     # xdgOpenUsePortal = true;
+    config.common.default = "*";
     extraPortals = with pkgs; [
       xdg-desktop-portal-gtk
     ];