hyprland: migrate to Lua config (Hyprland 0.55+)

Switch Gaming and Macbook to home-manager unstable which has
configType = "lua" support. Converts the full Hyprland config from
deprecated hyprlang to native Lua:

- flake: add home-manager unstable input for Gaming/Macbook
- hyprland.nix: configType = "lua", settings.config for static sections,
  extraConfig for env/startup/animations/binds/window-rules
- hosts: monitor config updated to hl.monitor({}) table format

Eliminates the windowrulev2 deprecation banner.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

hosts/FredOS-Gaming.nix

@@ -79,8 +79,12 @@
     };
 
     home-manager.users.fred = { ... }: {
-      wayland.windowManager.hyprland.settings.monitor =
-        [ "DP-2,3440x1440@180,0x0,1" ];
+      wayland.windowManager.hyprland.settings.monitor = [{
+        output   = "DP-2";
+        mode     = "3440x1440@180";
+        position = "0x0";
+        scale    = 1;
+      }];
 
       home.file.".local/share/Steam/compatibilitytools.d/Proton-CachyOS Latest".source =
         inputs.proton-cachyos-nix.packages.x86_64-linux.proton-cachyos-x86_64-v3.steamcompattool;

hosts/FredOS-Macbook.nix

@@ -34,8 +34,12 @@
     };
 
     home-manager.users.fred = { pkgs, ... }: {
-      wayland.windowManager.hyprland.settings.monitor =
-        [ ",preferred,auto,auto" ];
+      wayland.windowManager.hyprland.settings.monitor = [{
+        output   = "";
+        mode     = "preferred";
+        position = "auto";
+        scale    = "auto";
+      }];
 
       # wob reads 0-100 integers from a FIFO and shows a progress bar overlay
       systemd.user.services.wob = {