Initial commit

Server-authoritative Godot 4.6 strategy game.

Includes the headless WebSocket game server, the browser client, and
Nix packaging (server and web-export derivations plus a NixOS module)
for deployment.

flake.nix

@@ -0,0 +1,30 @@
+{
+  description = "Battle for 'Tismo — dedicated server and web client";
+
+  # Must provide Godot 4.6 and matching export templates. nixos-26.05 does.
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-26.05";
+
+  outputs =
+    { self, nixpkgs }:
+    let
+      systems = [
+        "x86_64-linux"
+        "aarch64-linux"
+      ];
+    in
+    {
+      packages = nixpkgs.lib.genAttrs systems (
+        system:
+        let
+          pkgs = import nixpkgs { inherit system; };
+          built = pkgs.callPackage ./nix/package.nix { };
+        in
+        {
+          inherit (built) server web;
+          default = built.server;
+        }
+      );
+
+      nixosModules.default = import ./nix/module.nix;
+    };
+}