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>

flake.nix

@@ -9,6 +9,13 @@
       inputs.nixpkgs.follows = "nixpkgs-stable";
     };
 
+    # Unstable HM for Hyprland Lua config support (configType = "lua",
+    # available since HM master / future 26.05).
+    home-manager = {
+      url = "github:nix-community/home-manager";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
     zen-browser = {
       url = "github:0xc000022070/zen-browser-flake";
       inputs = {
@@ -36,6 +43,7 @@
     , nixpkgs-stable
     , nixpkgs
     , home-manager-stable
+    , home-manager
     , zen-browser
     , nix-cachyos-kernel
     , hyprland
@@ -58,9 +66,9 @@
     in
     {
       nixosConfigurations = {
-        FredOS-Gaming      = mkHost "FredOS-Gaming"      nixpkgs-stable home-manager-stable;
+        FredOS-Gaming      = mkHost "FredOS-Gaming"      nixpkgs-stable home-manager;
         FredOS-Mediaserver = mkHost "FredOS-Mediaserver" nixpkgs-stable home-manager-stable;
-        FredOS-Macbook     = mkHost "FredOS-Macbook"     nixpkgs-stable home-manager-stable;
+        FredOS-Macbook     = mkHost "FredOS-Macbook"     nixpkgs-stable home-manager;
       };
     };
 }